iwaki pulse dampener · 2007. 5. 24. · (12.7 ×9.52 mm dia.) (19.05 ×15.83 mm dia.) (25 ×22 mm...

Read this manual before use of product

IWAKI Pulse Dampener

Models PD-15/30/60H

Instruction Manual

T436 01/06

( )Country codes

IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 JapanTEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwaki-pumps.co.jp/)

U.S.A. : IWAKI WALCHEM CorporationAustralia : IWAKI Pumps Australia Pty. Ltd.Singapore : IWAKI Singapore Pte. Ltd.Indonesia : IWAKI Singapore (Indonesia Branch)Malaysia : IWAKIm Sdn. Bhd.Taiwan : IWAKI Pumps Taiwan Co., Ltd.Thailand : IWAKI (Thailand) Co.,Ltd.Hong Kong : IWAKI Pumps Co., Ltd.China : IWAKI Pumps Co., Ltd. (Guangzhou office)China : IWAKI Pumps Co., Ltd. (Beijing office)China : IWAKI Pumps (Shanghai) Co., Ltd.Philippines : IWAKI Chemical Pumps Philippines, Inc.Korea : IWAKI Korea Co.,Ltd.

TEL : (1)508 429 1440 FAX : 508 429 1386TEL : (61)2 9899 2411 FAX : 2 9899 2421TEL : (65)763 2744 FAX : 763 2372TEL : (62)21 392 8288 FAX : 21 392 8088TEL : (60)3 703 8807 FAX : 3 703 4800TEL : (886)2 2776 5900 FAX : 2 2740 2812TEL : (66)2 320 1303 FAX : 2 322 2477TEL : (852)2 607 1168 FAX : 2 607 1000TEL : (86)20 8130 0605 FAX : 20 8130 0601TEL : (86)10 6442 7713 FAX : 10 6442 7712TEL : (86)21 5234 0776 FAX : 21 5234 0775TEL : (63)2 888 0245 FAX : 2 843 3096TEL : (82)2 3474 0523 FAX : 2 3474 0221

Germany : IWAKI EUROPE GmbHItaly : IWAKI Italia S.R.L.Denmark : IWAKI Pumper A/SSweden : IWAKI Sverige ABFinland : IWAKI Suomi OyNorway : IWAKI Norge ASFrance : IWAKI France S.A.U.K. : IWAKI PUMPS (UK) LTD.Switzerland : IWAKI (Schweiz) AGAustria : IWAKI (Austria) GmbHHolland : IWAKI Holland B.V.Spain : IWAKI Iberica Pumps, S.A.Belgium : IWAKI Belgium n.v.

TEL : (49)2154 9254 0 FAX : 2154 1028TEL : (39)02 990 3931 FAX : 02 990 42888TEL : (45)48 24 2345 FAX : 48 24 2346TEL : (46)8 511 72900 FAX : 8 511 72922TEL : (358)9 2742714 FAX : 9 2742715TEL : (47)66 81 16 60 FAX : 66 81 16 61TEL : (33)1 69 63 33 70 FAX : 1 64 49 92 73TEL : (44)1743 231363 FAX : 1743 366507TEL : (41)32 3235024 FAX : 32 3226084TEL : (43)2236 33469 FAX : 2236 33469TEL : (31)297 241121 FAX : 297 273902TEL : (34)943 630030 FAX : 943 628799TEL : (32)1430 7007 FAX : 1430 7008

Thank you for having selected IWAKI’s Pulse Dampener. This instruction manual,which is divided into five sections, namely “Safety Section”, “Outline Section”,“Installation Section”, “Operation Section” and “Maintenance Section” deals withthe correct handling and operation procedures for the dampener. To make maximumuse of the dampener and to ensure safe and long operation of the dampener, pleaseread this manual thoroughly and carefully prior to operating the dampener.

Contents

IMPORTANT INSTRUCTIONS .................................................................. 1Safety Section (Instructions to prevent accidents) ................................. 2

OUTLINE OF PRODUCT .......................................................................... 51. Unpacking and Inspection .................................... 62. Principle of Operation ........................................... 63. Model Identification .............................................. 64. Specifications ....................................................... 75. Construction, Dimension and Mass ..................... 8

INSTALLATION ....................................................................................... 101. Before use of Product ........................................ 112. Installation .......................................................... 113. Piping ................................................................. 12

OPERATION ........................................................................................... 131. Preparation for Operation ................................... 142. Operation ........................................................... 143. Stopping ............................................................. 14

MAINTENANCE ...................................................................................... 151. Troubleshooting .................................................. 162. Maintenance and Inspection .............................. 163. Consumable Parts .............................................. 17

This instruction manual should be kept on hand by the end user for quickreference. It is recommended that each user, after reading the instructionmanual thoroughly, place it in a place close the pump and dampener systemand where it may be easily accessed by any user or operator at any timewhenever necessary.

- 1 -

Types of Symbols

Indicates that "Warning" or "Caution" must be exercised. Insidethis triangle, a concrete and practical image provided as a warningor caution message is depicted.

Indicates a prohibited action or procedure. Inside or near this cir-cle, a concrete and practical image of the activity to be avoided isdepicted.

Indicates an important action or procedure which must be per-formed or carried out without fail. Failure to follow the instructionsherein can lead to malfunction or damage to the dampener.

For the Safe and Correct Handling of the Dampener

• Read the "Safety Instructions" sections carefully to prevent accidents involving your customers orother personnel and to avoid damage or loss of other assets. Always follow the instructions andadvice found in these sections.

• Observe and abide by the instructions described in this manual. These instructions are veryimportant for protecting dampener users from potentially dangerous conditions and situationsrelated with the use of the pump and dampener system.

• The symbols relate to the following meanings described below:

Nonobservance or misapplication of thecontents of the "Warning" section couldlead to a serious accident, including deathor injury.

Nonobservance or misapplication of thecontents of the "Caution" section couldlead to serious physical injury to the useror serious damage to the product.

Warning

Caution

Important Instruction

- 2 -

WARNING• Look around

Make sure there is no one around the pump and dampener when the pump isswitched on. The pump is not equipped with the power supply switch. Connectingthe power cable and supply air to the pump starts pump operation.

• Do not remodel dampenerNever try to remodel the dampener. Remodeling may be a cause of serious acci-dent or damage. Iwaki takes no responsibility for accidents or damages that mayresult due to any remodeling without permission by Iwaki.

• For specified application onlyThe use of the dampener in any application other than those clearly specified mayresult in injury of person or damage to the dampener. Use the dampener strictly inaccordance with the dampener specifications and application range.

• Do not drainNever discharge hazardous liquid, including but not limited to chemical liquid, overthe ground or floor in the plant directly.Abide by local regulations when disposing of hazardous substances.

• Do not touchTouching the dampener or piping which is extremely hot due to the circulation of ahot liquid may cause severe burns. Arrange adequate hand-protective measureswhen feeding a liquid at temperatures higher than 50 °C.

CAUTION• Wear protectors

Never fail to wear protective gear (protective goggles, cap, mask, acid-resistantgloves) when disassembling, assembling, or maintaining the dampener. In addition,clean the dampener carefully with pure water before working on the dampener.

• Qualified operator onlyThe dampener must be operated only by operator(s) who have been trained in thesafe operation of the dampener.

• Countermeasure for static electricityWhen low electric conductivity liquids such as ultra-pure water and fluor inactive liq-uid (e.g. FluorinertTM) are handled, the static electricity may be generated in thedampener, which may cause static discharge and break down. Take countermea-sures to avoid and remove the static electricity.

Safety Section

CAUTION• Power OFF

Make sure no one turns on the power switch while work is being done on the pump.Be sure to turn off the power switch before you start any maintenance/repair workconcerning the pump and dampener. If the working site is noisy or under conditionsof low visibility, you should display a notice which clearly states "POWER Off(Maintenance)," near the power switch in order to inform other personnel about thesituation. Power ON executed by any other person than the operator/service per-sonnel may result in a serious accident. The operator must take special precautionsto avoid accidents.

• Storage limitDo not store the dampener in places where an explosive atmosphere is located,dust is generated, or corrosive gas (such as chlorine gas) is present. Otherwise, afire may be caused or the health of personnel may be jeopardized.

• Ventilate siteWhen handling a toxic liquid or odorant, ventilate the working site well. In addition,wear protective gear (protective mask, goggles, gloves, etc.).

• Disposal of used dampenerDisposal of used or damaged dampener must be done in accordance with locallaws and regulations. (Consult a licensed industrial waste products disposing com-pany.)

• Send-back to IwakiWhen sending the dampener back to Iwaki, drain the liquid out of the dampener andclean thoroughly with water to prevent any accidents during transportation.

• Supply air pressureSupply air pressure must be maintained within specified supply air pressure range.Otherwise, the bellows may be deformed.

• Prohibited liquidsDo not operate the dampener with the following liquids.· Liquid easily crystallized· Liquid containing slurry· Low conductivity hydro-carbon

• Liquids to be handled with careStripper, solvent-type liquid, hydrazine or fuming sulfuric acid should be handledcarefully.

• During pump and dampener operation· Make sure to open both the suction and discharge-side valves fully. In addition,

confirm that the piping is fully supplied with liquid.

- 3 -

Safety Section

- 4 -

Safety Section

CAUTION• Stopping pump operation

· When stopping pump and dampener operation, release the pressure on the dis-charge side first. Otherwise, the bellows may be deformed due to the residualpressure on the pump discharge side.

· If a valve is provided on the discharge side, do not close the valve upon stoppingthe pump and dampener. The resulting impactive pressure may deform the bel-lows or connecting plate.

• Pump at haltDo not supply air to both the right and left air-supply ports at the same time, to pre-vent the bellows from becoming deformed.

- 5 -

OUTLINE OF PRODUCT

1. Unpacking and Inspection ................. 6

2. Principle of Operation ........................ 6

3. Model Identification ........................... 6

4. Specifications .................................... 7

5. Construction, Dimension and Mass .. 8

This section deals with operating principle, type and specifications of thedampener.

- 6 -

1. Unpacking and Inspection

After unpacking of the product, check the

followings to ascertain that the product is exactly as

you ordered.

If you find anything wrong, please contact your

dealer.

(1) If the model name shown on the nameplate is

exactly the one you ordered.

(2) If the product is not damaged or bolts and nuts

are not loosened during transportation.

2. Principle of Operation

IWAKI pulse dampener models PD-15, 30, 60H are

the devices exclusively designed for IWAKI

pneumatic drive bellows pumps for the purpose of

dampening the pulses of pumped liquid. The liquid

discharged from the pump is transferred through

suction port, bellows and to discharge port. The

pulsation of liquid is damped by the pressure of

sealed air which is supplied through another port.

3. Model Identification

PD - 15 H - Ms d

a

(1) Series name

(2) Applied volume (Max. discharge capacity of applied pump)

15 : 15 L/min.

30 : 30 L/min.

60 : 55 L/min.

(3) Special version symbol

No symbol : Standard

IWAKI CO.,LTD.

Iwaki Auto Dampener

MFG. NO.MODEL

TOKYOJAPAN

1P41

7090

2

Liquidsuction port

Liquiddischarge port

Air supply port

Bellows

- 7 -

4. SpecificationsDampener model PD-15H

Applied pump model FS-15

5-100 101-180

PTFE, PFA

PD-30H PD-60H

FS-30 FS-60

101-180 5-100 101-180 5-100Liquid temperature (deg. C)

Max. liquid press. (MPa) 0.3 0.2 0.3 0.2 0.3 0.2

Max. supplied air press. (MPa)

Pulsation press. Width (MPa) Within 0.06 if liquid viscosity is 1 - 50 mPs·S

Liquid inlet/outlet ports size PFA 1/2" tube PFA 3/4" tube PFA 1" tube

Air piping connection bore Rc 1/8 (Female)

Wet-end material

(12.7 × 9.52 mm dia.) (19.05 × 15.83 mm dia.) (25 × 22 mm dia.)

Precautions on handling

1) Do not handle the liquids which are apt to be crystallized or contain slurries. Otherwise, the life of consumable

parts are extremely shortened.

2) Do not exceed the specified max. liquid pressure and sealed air pressure. Otherwise, pump or dampener may be

damaged.

Performance and dimensions may be changed without prior notice.

- 8 -

5. Construction, Dimension and MassModels PD-15H, 30H

Rc1/8 AIR IN

2-M3

G

F'' PFA tube

4- 7

A

B

(100)(100)

C

B

E

D

(H)

J

J

I

I

IN OUT

13123 11

5

6

2

7

1

10

98

16

4

15

14

φ

φ

No. Parts name Q'ty Material Remarks

1 Bellows unit 1 PTFE, PFA

2 Cylinder 1 A5056 4F coating

3 Plate 1 A5052 4F coating

4 Stud bolt 4 SUS304 PTFE coating

5 Cover 1 A5052 4F coating

6 Bellows plate 1 SUS304

7 Split flange 2 SUS304

8 Hex. socket head bolt 6 Stainless steel M3 × 89 Spring washer 6 Stainless steel M310 O ring 2 FKM Note 1

11 Cap 4 PP

12 Hex. nut 4 Stainless steel M8

13 Conical spring washer 4 Stainless steel Nominal 8

14 Hex. socket head screw 2 Stainless steel M3 × 1215 O ring 2 FKM P-3

16 Electrode holder 2 SUS304

A B C D E F H

PD-15H 310 110 110 134 19.5 1/2 13

PD-30H 316 116 124 143 22.5 3/4 14

O ring

PD-15H S-95

PD-30H S-125

Mass (Kg)

PD-15H 1.8

PD-30H 2.3

G

34

40

- 9 -

Model PD-60H

No. Parts name Q'ty Material Remarks


2 Cylinder 1 A5056 4F coating

3 Plate 1 A5052 4F coating

4 Stud bolt 4 SUS304 PTFE coating

5 Cover 1 A5052 4F coating


7 Split flange 2 SUS304

8 Hex. socket head bolt 6 Stainless steel M3 × 8

9 Spring washer 6 Stainless steel M3

10 O ring 2 FKM S-125

11 Cap 4 PP

12 Hex. nut 4 Stainless steel M10

13 Conical spring washer 4 Stainless steel Nominal 10

14 Hex. socket head screw 2 Stainless steel M3 × 12

15 O ring 2 FKM P-3

18 Stopper 1 SUS304

Rc1/8 AIR IN

40

2- 25× 22(1'') PFA tube

4- 9

142

(100)(100) 142

186

25.5

172

(17)

B

B

OUTIN

A

A

131218 17 11

5

6

2

7

1

3

10

98

16

4

15

14

2-M3

Mass : 4.1kg

φ

φ φ

φ


17 Guide 1 SUS304

- 10 -

INSTALLATION

1. Before use of Product ..................... 11

2. Installation ....................................... 11

3. Piping .............................................. 12

This “Installation clause“ must be thoroughly understood by the user before

actually installing the dampener. Do not start your installation work unless

you confirm your understanding of the entire set of descriptions in this

section.

- 11 -

1. Before use of Product(1) Do not interrupt the sealed air coming to the dampener.

The interruption of sealed air coming to the dampener while the pressure is not released at discharge side may

cause the deformation of bellows.

(2) Do not apply the pressure exceeding specified pressure of pump.

If the pressure exceeding the specified max. liquid pressure and max. sealed air pressure (Refer to specification

table) is applied to the dampener, the dampener may be failed and damaged.

(3) Handling of the liquid which is apt to be crystallized or contains slurries extremely shorten the life of bellows.

(4) Pay attention to handling stripper or solvent.

Some kinds of stripper may generate in a short time the cracks in bellows and pipes (PFA). Please contact IWAKI

when you will handle these liquids.

Caution

When the solvent is handled, do not connect the electrode to the dampener. Otherwise it may spark and resultin fire.

(5) Temperature of dampener surface

Caution

While high temperature liquid is handled, the surface of dampener or pipe becomes very hot. Take protectivemeasurement for bare hand not to touch them.

Model Liquid temp. Dampener surface temp. Room temp.

PD-15H 180 deg. C 48 deg. C 23 deg. C



2. Installation(1) Install the dampener so that the connected tubes come horizontally.

(2) Install the dampener between the pump and filter and as close to the pump as possible. Length of pipe between

pump outlet and dampener inlet should be 1 meter or shorter.

(3) Keep enough space around the dampener for the future maintenance.

(4) Securely install the dampener and pump on the flat stand.

- 12 -

3. Piping

Liquid piping

(1) Do not confuse the suction port with the

discharge port.

(2) Install the pipe support so that the pipe load can

not be added to the dampener.

(3) Install the piping so that the dampener can not

be influenced by the expansion of heated pipe.

(4) Install the filter at the discharge side of the

dampener.

(5) Use the pipe which can resist to the pressure

more than the specified dampener pressure.

(6) Take care of the mounting of joints so that the

air can not be sucked in. Especially, the air in

the suction side piping causes unstable or no

discharged liquid.

(7) Connection of discharge, suction pipes

Use the union elbow to connect the pipes to the

suction and discharge tubes of dampener.

Air piping

(1) Take the air piping from the secondary side of pressure reduction valve to connect the dampener.

Caution

Install two pressure reduction valves for pump driving and dampener. Do not use the pressure reduction valvein common for pump driving and dampener.

(2) Use the pressure reduction valve with relief.

Caution

If relief type pressure reduction valve is not used, it gives bad influence to the pulsation dampening effect.

��

��

��

��

��

��

��

��

��

��

��

��

��

��

��

Press. reduction valvewith relief

Press. gauge(PG2)Press. gauge (PG3)

Press. reduction valvewith relief

Press. gauge (PG1)

Filter

Air source

Filter

5-ports electro-magnet valve

(Dis

ch. s

ide)

IN

Dampener

Suc. side

(Suc

. sid

e)

: Air piping

: Liquid piping

: Liquid flow

: Air flow

Example of liquid and air piping

�

��

��

��

��

��

��

��

��

��

��

��

��

��

��

��

�

Pump

Disch. side

- 13 -

OPERATION

1. Preparation for Operation ................ 14

2. Operation ......................................... 14

3. Stopping .......................................... 14

Dampener operation shall be limited to the range covered by and described in thisinstruction manual. Use of the dampener in a different method or procedure that isnot described in this instruction manual is prohibited. Iwaki takes no responsibilityfor injury to person or damage to assets which results from a failure to observe thisinstruction. Contact Iwaki, an Iwaki branch office, or an Iwaki distributor whennecessary.

- 14 -

1. Preparation for OperationWhen the pump and dampener are used first time, check and see followings.

(1) Confirm that there are no damaged parts, loosened bolts or leakage.

(2) Adjustment of sealed air pressure

The sealed air pressure is adjusted by controlling relief type pressure reduction valve.

2. OperationOrder Operation Check items

1 Start pump If the liquid is discharged normally from discharge side.

2

Adjust pump discharge

capacity and sealed air

pressure.

Check by pressure gauge (PG3) if air pressure does not exceed the specified

pressure of pump. Refer to piping example on page 12.

- In case a pressure gauge (PG2) is installed at discharge side.

After pump started, adjust the pressure by gradually increasing the sealed air

pressure (PG1) so that the vibration of pointer of pressure gauge (PD2)

becomes minimum.

- In case a pressure gauge (PG2) is not installed at discharge side.

You will find the point at which the pump speed gets faster a little bit when

the sealed air pressure is gradually increased. Set the sealed air pressure

(PG1) at this point.

4 After the procedure above, you will find no abnormality, start the normal operation.

3 Refer to instruction manual for the pump operation.

Caution

Confirm the air pressure is added to the dampener during the pump operation. If the pressure is not applied,pulsation dampening effect may be reduced or the bellows may be deformed.

Caution

When the discharge side pressure becomes high due to the blinded filter or so, increase the sealed air pressure,too. (Pulsation will become larger if the sealed air pressure is not changed according to the discharge pressurechange.)

Caution

Time lag (intermittent) operation greatly lowers the pulsation dampening effect. Also, it may damage thebellows.

3. Stopping(1) Stop the pump according to the instructions on pump and dampener instruction manual.

(2) Continue to apply the air pressure even when the pump is stopped.

Caution

If the supplied air to the dampener is interrupted while the pump discharge side is pressurized, the bellows maybe deformed. Release the residual pressure when the pump is stopped.

(3) When the pump is not operated for a long period, stop supplying air to dampener after you confirm the liquid

pressure is not kept in the dampener.

- 15 -

MAINTENANCE

1. Troubleshooting ............................... 16

2. Maintenance and Inspection ........... 16

3. Consumable Parts ........................... 17

Dampener operation shall be limited to the range covered by and described in thisinstruction manual. Use of the dampener in a different method or procedure that isnot described in this instruction manual is prohibited. Iwaki takes no responsibilityfor injury to person or damage to assets which results from a failure to observe thisinstruction. Contact Iwaki, an Iwaki branch office, or an Iwaki distributor whennecessary.

- 16 -

Maintenance Section

Note : Replacement is done by IWAKI.

Trouble Causes Countermeasures Inspection item

Too large

pulsation

(beyond

specified

pulsation rate)

Too high discharge pressure

Too low supplied air

pressure to dampener

Check and replace filter.

Keep suitable supply air

pressure.

a. Check if filter is not clogged or

dried.

b. Check if filter is wetted enough.

a. Refer to the item “Air piping” on

page 12.

Air is mixed in

liquid

Broken bellows in dampener Replace bellows unit.

(Note)

a. Check if specified air pressure is

applied to dampener.

b. Check if more than specified

pressure is not applied to dampener.

Liquid leaks Broken bellows

(Air is mixed in liquid)

Replace bellows unit.

(Note)

a. Check if more than specified

pressure is not applied to dampener.

b. Check if residual pressure is

removed.

Air leaks

(from

cylinder)

Insufficiently tightened bolts

Deteriorated or deformed O

ring

Tighten bolts securely.

Replace O ring. (Note)

Refer to table of tightening torque on

page 17.

Alarm

¡ Wear protectors

Make sure to wear protective gear (protective goggles, cap, mask, etc.) when maintenance or

inspection works are carried out.

¡ Release pressure out of piping

Residual pressure in piping may splash liquid and cause an unexpected accident. Release the

pressure before starting the works.

¡ Stop supplying air

When maintenance works are done for dampener, stop supplying air to dampener.

¡ Switch off power

When maintenance works are done, switch off electric power of pump. Also, make sure no one turns

on the power switch while the work is being done. The operator must take special precautions to

avoid accidents.

1. Troubleshooting

2. Maintenance and Inspection

- 17 -

Parts Q'ty Time to be replaced

Bellows unit 12 years (continuous

operation)

Daily inspection

(1) Check if the liquid is discharged normally from dampener (pump).

(2) Check if discharge pressure and capacity do not change. Check the width of vibration of pressure gauge.

(3) Check if the pipes do not vibrate abnormally.

Periodic inspection (once a month or more frequently)

(1) Check if air does not leak from cylinder. If you find the leakage through the cylinder, stop the pump after the

pressure is released from discharge side of pump, and leave the pump until it cools down to ambient temperature.

Gradually tighten hex. nuts.

Tightening torque of nuts

PD-15H PD-30H PD-60H

3 N·m 3 N·m 5.9 N·m

3. Consumable PartsRepair or replacement is done by IWAKI.

Note 1. Quantity is for one dampener.

2. Time to be replaced shown above is reference but not for guarantee. Durability of consumable parts depend on

the pressure, temperature, characteristics of handled liquid.


IWAKI Pulse Dampener

Models PD-15/30/60H

Instruction Manual

T436 01/06

( )Country codes

IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 JapanTEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwaki-pumps.co.jp/)

U.S.A. : IWAKI WALCHEM CorporationAustralia : IWAKI Pumps Australia Pty. Ltd.Singapore : IWAKI Singapore Pte. Ltd.Indonesia : IWAKI Singapore (Indonesia Branch)Malaysia : IWAKIm Sdn. Bhd.Taiwan : IWAKI Pumps Taiwan Co., Ltd.Thailand : IWAKI (Thailand) Co.,Ltd.Hong Kong : IWAKI Pumps Co., Ltd.China : IWAKI Pumps Co., Ltd. (Guangzhou office)China : IWAKI Pumps Co., Ltd. (Beijing office)China : IWAKI Pumps (Shanghai) Co., Ltd.Philippines : IWAKI Chemical Pumps Philippines, Inc.Korea : IWAKI Korea Co.,Ltd.

TEL : (1)508 429 1440 FAX : 508 429 1386TEL : (61)2 9899 2411 FAX : 2 9899 2421TEL : (65)763 2744 FAX : 763 2372TEL : (62)21 392 8288 FAX : 21 392 8088TEL : (60)3 703 8807 FAX : 3 703 4800TEL : (886)2 2776 5900 FAX : 2 2740 2812TEL : (66)2 320 1303 FAX : 2 322 2477TEL : (852)2 607 1168 FAX : 2 607 1000TEL : (86)20 8130 0605 FAX : 20 8130 0601TEL : (86)10 6442 7713 FAX : 10 6442 7712TEL : (86)21 5234 0776 FAX : 21 5234 0775TEL : (63)2 888 0245 FAX : 2 843 3096TEL : (82)2 3474 0523 FAX : 2 3474 0221

Germany : IWAKI EUROPE GmbHItaly : IWAKI Italia S.R.L.Denmark : IWAKI Pumper A/SSweden : IWAKI Sverige ABFinland : IWAKI Suomi OyNorway : IWAKI Norge ASFrance : IWAKI France S.A.U.K. : IWAKI PUMPS (UK) LTD.Switzerland : IWAKI (Schweiz) AGAustria : IWAKI (Austria) GmbHHolland : IWAKI Holland B.V.Spain : IWAKI Iberica Pumps, S.A.Belgium : IWAKI Belgium n.v.

TEL : (49)2154 9254 0 FAX : 2154 1028TEL : (39)02 990 3931 FAX : 02 990 42888TEL : (45)48 24 2345 FAX : 48 24 2346TEL : (46)8 511 72900 FAX : 8 511 72922TEL : (358)9 2742714 FAX : 9 2742715TEL : (47)66 81 16 60 FAX : 66 81 16 61TEL : (33)1 69 63 33 70 FAX : 1 64 49 92 73TEL : (44)1743 231363 FAX : 1743 366507TEL : (41)32 3235024 FAX : 32 3226084TEL : (43)2236 33469 FAX : 2236 33469TEL : (31)297 241121 FAX : 297 273902TEL : (34)943 630030 FAX : 943 628799TEL : (32)1430 7007 FAX : 1430 7008


IWAKI Auto-dampener

PDA-W Series

Instruction Manual

T389-1 '04/04

U.S.A.AustraliaSingaporeIndonesiaMalaysiaTaiwanThailandHong KongChinaChinaChinaChinaPhilippinesKorea

TEL : (1)508 429 1440TEL : (61)2 9899 2411TEL : (65)6316 2028TEL : (62)21 690 6606TEL : (60)3 7803 8807TEL : (886)2 8227 6900TEL : (66)2 322 2471TEL : (852)2 607 1168TEL : (86)750 380 9018TEL : (86)20 8435 0603TEL : (86)10 6442 7713TEL : (86)21 6272 7502TEL : (63)2 888 0245TEL : (82)2 3474 0523

GermanyItalyDenmarkSwedenFinlandNorwayFranceU.K.SwitzerlandAustriaHollandSpainBelgium

TEL : (49)2154 9254 0TEL : (39)02 990 3931TEL : (45)48 24 2345TEL : (46)8 511 72900TEL : (358)9 2742714TEL : (47)66 81 16 60TEL : (33)1 69 63 33 70TEL : (44)1743 231363TEL : (41)26 674 9300TEL : (43)2236 33469TEL : (31)297 241121TEL : (34)943 630030TEL : (32)1367 0200

: IWAKI WALCHEM Corporation: IWAKI Pumps Australia Pty. Ltd.: IWAKI Singapore Pte. Ltd.: IWAKI Singapore (Indonesia Branch): IWAKIm Sdn. Bhd.: IWAKI Pumps Taiwan Co., Ltd.: IWAKI (Thailand) Co.,Ltd.: IWAKI Pumps Co., Ltd.: IWAKI Pumps (Guandong) Co., Ltd.: GFTZ IWAKI Engineering & Trading (Guangzhou): IWAKI Pumps Co., Ltd. (Beijing): IWAKI Pumps (Shanghai) Co., Ltd.: IWAKI Chemical Pumps Philippines, Inc.: IWAKI Korea Co.,Ltd.

FAX : 508 429 1386FAX : 2 9899 2421FAX : 6316 3221FAX : 21 690 6612FAX : 3 7803 4800FAX : 2 8227 6818FAX : 2 322 2477FAX : 2 607 1000FAX : 750 380 9078FAX : 20 8435 9181FAX : 10 6442 7712FAX : 21 6272 6929FAX : 2 843 3096FAX : 2 3474 0221

( )Country codes

IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 JapanTEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwakipumps.jp)

: IWAKI EUROPE GmbH: IWAKI Italia S.R.L.: IWAKI Pumper A/S: IWAKI Sverige AB: IWAKI Suomi Oy: IWAKI Norge AS: IWAKI France S.A.: IWAKI PUMPS (UK) LTD.: IWAKI (Schweiz) AG: IWAKI (Austria) GmbH: IWAKI Holland B.V.: IWAKI Iberica Pumps, S.A.: IWAKI Belgium n.v.

FAX : 2154 1028FAX : 02 990 42888FAX : 48 24 2346FAX : 8 511 72922FAX : 9 2742715FAX : 66 81 16 61FAX : 1 64 49 92 73FAX : 1743 366507FAX : 26 674 9302FAX : 2236 33469FAX : 297 273902FAX : 943 628799FAX : 1367 2030

We thank you for selecting IWAKI Auto-dampener PDA-W series. This instructionmanual, which is divided into five sections of "Safety", "Outline of product", "Instal-lation", "Operation" and "Maintenance", deals with the correct handling and opera-tion procedures for the auto-dampener. To make maximum use and to ensure safeand long time operation of the auto-dampener, please read this manual thoroughlyand carefully prior to operating the auto-dampener.

Contents

Safety section .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1Outline of product. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

1. Unpacking and inspection..............................................................................62. Outline of product...............................................................................................63. Model code............................................................................................................64. Specification .........................................................................................................75. Dimensions and mass .....................................................................................86. Structure and names of parts.......................................................................97. Main parts and labeling ................................................................................10

Installation .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .111. Before use...........................................................................................................122. Installation ...........................................................................................................123. Piping.....................................................................................................................13

Operation .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151. Preparation for operation .............................................................................162. Operation.............................................................................................................163. Stopping .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Maintenance.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .171. Troubleshooting.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182. Maintenance and inspection .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193. Consumable parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

This instruction manual should be kept on hand by the end user for quick reference. It is recom-mended that each user, after reading the instruction manual thoroughly, keep it in a position closeto the pump system and where it may be easily accessed by operator at any time whenever neces-sary.Concerning any points you wish to know more about, contact IWAKI, IWAKI branch office orIWAKI distributor.

- 1-

For the Safe and Correct Handling of the Auto-dampener

• Before use of the auto-dampener, read this "Safety Section" to prevent accidents and toavoid the damage or loss of assets.

• Observe and abide by the instructions described in this "Safety Section".These instructions are very important for protecting pump users or other persons fromhazard or loss of assets.

• Meaning of symbolsFollowing two symbols describe the extent of hazards and loss which may be brought ifthe instructions are not observed or if the auto-dampener is wrongly used.

Following two symbols describe the content to be observed.

Safety section

Warning

Non observance or misapplication of the contents of

the "Warning" could lead to a death or injury of per-

son.

Caution

Non observance or misapplication of the contents of

the "Caution" could lead to a injury of person or dam-

age of assets.

Prohibited action or procedure is indicated.

Inside or near this circle, a concrete activity to be pro-

hibited is depicted.

Action or procedure which must be performed without

fail is indicated. Inside this circle, a concrete activity

to be performed is depicted.

- 2-

WARNING• Look around

Make sure there is no one around the pump and auto-dampener when the power is

supplied. ON/OFF switch is not equipped on the pump. The pump starts to operate

when power cord is connected.

• Do not remodel the auto-dampenerNever try to remodel the auto-dampener. Remodeling may cause serious accident

or damage. IWAKI takes no responsibility for the accidents or damages that were

caused by remodeling which was made without approval of IWAKI.

• For specified application onlyThe use of the auto-dampener in any application other than those clearly specified

may result in injury of person or damage to the dampener. Use the auto-dampener

strictly in accordance with the dampener specifications and application range.

• Do not drain liquidNever discharge hazardous liquid including chemical liquid over the ground or floor

of the plant.

Abide by local regulations when hazardous substances are disposed.

• Do not touchWhen high temperature liquid is transferred, surface of auto-dampener or piping

becomes very hot. You may get burned if you touch them with bare hand. Take ade-

quate protective measures when the liquid at temperature more than 50 deg. C is

transferred.

Caution

No remodeling

Prohibited

Prohibited

Do not touch

Safety section

- 3-

CAUTION• Wear protectors

Never fail to wear protective gear (protective goggles, cap, mask, acid-resistant

gloves) when disassembling, assembling or maintaining the auto-dampener. In

addition, clean the dampener with pure water before maintenance works are done.

• Qualified operator onlyThe auto-dampener must be operated by the operator who has been trained for the

safe operation of the dampener.

• Power offMake sure that anyone does not turn on, by mistake, the power switch of the system

or the pump while the work is being done. If the working site is noisy or poor visibili-

ty, a notice of "MEN AT WORK" must be put at the place where the switch is locat-

ed.

Switched on power by mistake may result in person injury.

• Limitation to installation and storage placeTo avoid the fire or injury, do not install or store the dampener at:

• flammable or bad atmospheric place• place where dust is generated• place where corrosive gas is generated

Wear protective gear

Caution

Power off

Prohibited

• ReturnWhen the dampener is sent back to IWAKI, drain the liquid out of the dampener and

clean thoroughly with water to prevent any accidents during transportation. Caution

• VentilateWhen handling a toxic liquid or odorant, ventilate the working site well. In addition,

wear protective gear (protective mask, goggle, gloves, etc.). Caution

• Disposal of used dampenerDisposal of used or damaged dampener must be done in accordance with local

laws and regulations. (Consult a licensed industrial waste products disposing com-

pany.)Caution

Safety Section

• Supply air pressureDo not supply air at pressure exceeding 0.5 MPa to prevent bellows from deforma-

tion. Caution

- 4-

CAUTION

• Air exhaust portDo not choke (make tube dia. smaller) air exhaust port to avoid bellows deformation

due to residual air.

• When operate pump & dampenerFully open pump inlet and outlet sides valves. Confirm that liquid is filled in piping.

• Countermeasures for static electricityWhen low electric conductivity liquid such as ultra-pure water and fluor inactive liq-

uid (e.g. Fluorinert™) are handled, the static electricity may be generated in the

pump and dampener, which may cause static discharge and pump or dampener

breaks down. Take countermeasures to avoid and remove the static electricity.

Caution

Caution

Safety Section

• Liquid to be handled with careStripper or solvent type liquid should be handled carefully.

Caution

• When pump is stopped• When pump is stopped, release pressure on the discharge side first. Otherwise

the bellows may be deformed due to the residual pressure on the pump dis-

charge side.

• If a valve is provided on the discharge side, do not close the valve when pump isstopped to avoid impactive pressure resulting in deformation of bellows or con-

necting plate.

Caution

• Pump at halt• Do not supply air to both the right and left air-supply ports at the same time to

prevent the bellows from deformation.

• If the pump or dampener is stopped for a long time with the liquid inside, the gazmay be generated to penetrate the bellows and corrode the metallic parts. When

the pump or dampener is stopped for two or three days, operate them for ten

minutes or so a day to remove air.

Caution

• Prohibited liquidsDo not handle following liquids.

• Liquid easily crystallized• Liquid containing slurry• Solvent naphtha

Caution

- 5-

1. Unpacking and inspection........................6

2. Outline of product ......................................6

3. Model code..................................................6

4. Specification................................................7

5. Dimension and mass ................................8

6. Structure and names of parts .................9

7. Main parts and labeling..........................10

Outline of product

- 6-

PDA - 20 W - Mw e

q

q : Series codew : Capacity (Max. discharge capacity of corresponding pump)

20 : 20 L/min. 40 : 40 L/min. 80 : 80 L/min.e : Special version

No symbol : Standard version With symbol : Special version

3. Model code

After unpacking the product, check the followingpoints to ascertain that the product is exactly yourordered one.(1) if the model code on the nameplate is the same

as your ordered one.(2) if the product is not broken or bolts and nuts are

not loosened during transportation.

MODEL

MFG. NO.

IWAKI CO.,LTD. TOKYOJAPAN

Auto Dampener

IWAKI auto-dampener PDA-W series are exclu-sively designed for pneumatic driven bellows pumpto dampen the liquid pulsation.The liquid discharged from pump is transferredfrom inlet port through bellows to be dischargedfrom outlet port. At this moment, the air which issupplied from separate line is automatically adjust-ed by pressure regulating valve to dampen the liq-uid pulsation.

Liquid suction port

Pressure adjusting valve

Pressure adjusting valve

Air supply

Bellows

Liquid discharge port

Air exhaust

1. Unpacking and inspection

2. Outline of product

- 7-

Model PDA-40W PDA-80WApplied pump FW-40 FW-80

Max. liquid press. (MPa)Supply air press. (MPa) 0.2-0.5Pulsation press width (Mpa)Liquid pipe connectionAir piping connectionWet end material

PDA-20WFW-20

10-800.5 0.5

Within 0.06 (in case liquid viscosity is within 1 - 50 mPa · s)

Rc 1/4 (Female)

• Notes on operation(1) Do not handle the liquid which is apt to be crystallized or contains solids.

Otherwise life of parts is shortened.(2) Do not use the product exceeding the max. allowable liquid and air pressure.

Otherwise the pump or dampener may be troubled.(3) If AC-3 controller is used to drive the pump, use the solenoid valve of double solenoid and 2-position

type. If single solenoid type is used, good dampening effect can not be obtained. Note: Performance and dimensions may be changed without prior notice.

4. Specification

Temp. range (;) 10-100 101-150 151-180 10-100 101-150 151-1800.3 0.2 0.5 0.3 0.2

0.2-0.5 0.15-0.3 0.15-0.2 0.2-0.5 0.15-0.3 0.15-0.2

PFA tube 19 mm ◊ 16 mm dia. PFA tube 25 mm ◊ 22 mm dia.

PTFE, PFA

- 8-

PDA-20, 40, 80W

5. Dimension and mass

A B C D E F G H Mass (kg)

PDA-40W 388 188 255 229 φ25◊φ22 23 36 162 12PDA-80W 408 208 323 266 φ25◊φ22 25 38 188 17

PDA-20W 348 148 215 191 φ19◊φ16 18 33 135 7

I

View I

OIN OUT

O

(H)

(H)

2 − M3 depth 5

(100)(100)

11

(F)

4 − 9φ

φD

2 − Rc1/4"

2 − E PFA tube

C

(G)

(A)

B

- 9-

PDA-20, 40, 80W

6. Structure and names of parts

No Name Q'ty Material Remarks

16 Slider pin 1 SUS304

17 O-ring 2 FKM Note

18 Cap nut 4 SS Fluor coat

19 Plate washer 4 SS Fluor coat

20 O-ring 1 FKM S-10

21 Stopper 1 SUS304

22 Spacer A 1 PP


24 O-ring 2 FKM P-3

25 Hex screw 2 SS M3 ◊ 12

28 Hex bolt 6 SS

29 Spring washer 6 SS M4


27 Bellows flange 2 SUS304

No Name Q'ty Material Remarks


2 Cylinder 1 A6063 Fluor coat

3 Plate 1 A5052 Fluor coat

4 OUT guide 1 SUS304

5 Slider 1 PPS

6 Stud bolt 4 SUS304 PTFE coat

7 Valve A 2 SUS304

8 Pin nut 1 SUS304

9 Pin 1 SUS304

10 Spring A 1 SUS304WPB

11 Spring B 2 SUS304WPB

12 Cover 1 A5052 Fluor coat

13 Spacer 1 PP

14 IN guide 1 SUS304

15 Valve seat 2 FKM

O

O

12

23

24

25

18 19

1

5 27

21 26

9 62928

14 2

15 8

17 16

20 10

432271311

O-ring

PDA-20W S-135

PDA-40W 172 ◊ 3PDA-80W 194.5 ◊ 2

Note

- 10-

7. Main parts and labeling

IN label

IN label

OUT label

CoverFix when installed Suction port

Air supply port

Nameplate

Air exhaust port

OUT label

Discharge port

Note: Do not use solvent to clean unit body and nameplate.

- 11-

1. Before use .................................................12

2. Installation .................................................12

3 Piping .........................................................13

Installation

- 12-

1. Before use

(1) If the air supply is interrupted while liquid side is pressurized, the bellows may be deformed.(2) Do not use the dampener at higher pressure than the specified pressure of pump. The dampener may be

broken or failed if it is continuously operated exceeding max. allowable liquid pressure and max. allow-able supply air pressure. (Refer to Specification item)

(3) Do not handle the liquid which is apt to crystallize or contains slurry. These liquids shorten the life ofbellows.

(4) Pay attention to stripping agent or solvent.• Some kinds of stripper may cause the cracks in a short time in bellows or in piping (PFA material).

(Guarantee period is different for these liquids. Ask IWAKI.)• Explosion type is supplied for solvent. Do not wire to electrode when pumping solvent to avoid the

spark to the liquid resulting in fire.

Warning

While high temperature liquid is pumped, the temperature of dampener or pipe surfaces are very high.Take protective method not to touch them with bare hands.

Model

PDA-80W

Cylinder surface temp.

40 deg.C

Liquid temp. Room temp.

80 deg.C 20 deg.C

PDA-20W 180 deg.C 74 deg.C 20 deg.CPDA-40W 180 deg.C 66 deg.C 20 deg.C

2. Installation

(1) Mount the dampener so that the liquid IN and OUT ports come to up side.(2) Install the dampener as close to the pump between the pump and filter so that the tube length is less

than 1 meter. (3) Keep enough space around the dampener so that the maintenance can be done easily.(4) Mount the dampener (pump) securely on the flat stand.

- 13-

3. Piping

• Liquid piping(1) There is the distinction of suction and dis-

charge side tubes of dampener. Pay attentionto the connection. "I" is marked for suctionside and "O" for discharge side.

(2) Install pipe support so that pipe load can notbe put on the dampener.

(3) In case that high temperature liquid is han-dled, piping must be done so that the damp-ener can not be affected by the expansion andshrinkage of the pipe because of the heat.

(4) Install the filter in the discharge piping.(5) Employ the tube which has the pressure

resistance more than that of specified max.pressure of the dampener.

(6) For mounting of pipe joints, pay attention sothat the air can not be sucked in. Especially,the air sucked in suction piping causes unsta-ble or impossible discharge.

(7) PFA tubes are equipped for suction and dis-charge ports. Tube diameters are:

PDA-20W : 19 ◊ 16 mmPDA-40W : 25 ◊ 22 mmPDA-80W : 25 ◊ 22 mm

For piping, use the tube fittings which corre-spond to tube diameters.For pipe line tube, use larger diameter onethan above.

Filter

Pressuregauge(PG1)

Autodampener

IN OUT

ExhaustTake inAir supply source

(to seal air)

Pressurereducing valve

Pressuregauge(PG2)

Suction side

Discharge side

Solenoidvalve

Pump

: Liguid piping

: Air piping

Piping example

Attached to tube To pipe line

Attached to tube To pipe line

Tube fitting

Tube fitting

- 14-

• Air piping(1) Air piping should be connected to the dampener from secondary side of pressure reducing valve to

adjust pump.

Caution

Pipe diameter must be the same as that of the pump (solenoid valve). If the pipe diameter to thedampener is small, necessary air can not be supplied to the dampener inlet because of pressuredown, which will bring reduced dampening effect or deformed bellows.

Caution

Install one pressure reducing valve for each one pair of pump/dampener. One pressure reducingvalve for plural pumps/dampeners will bring reduced pulsation effect or deformed bellows becauseof pressure down at dampener inlet.

(2) In case that air adjusting valve is installedIf the valve (marked * on the illustration below) is installed in the air piping to adjust stroke rate ofpump, install it at place where it does not interrupt the air supply to the dampener as shown on theillustration below.

(No good)Air supply source

Pressure reducing valve

(Good)

To auto-dampener

*

*

To pump (solenoid valve)

- 15-

1. Preparation for operation.......................16

2. Operation...................................................16

3. Stopping.....................................................16

Operation

- 16-

1. Preparation for operation

When the pump is operated first time together with the dampener, check the followings.(1) Check to see if no damage, loosened bolts or leakage are found on dampener (pump).(2) Air pressure adjustment

This auto-dampener automatically adjusts the air pressure to be sealed depending on handled liquid pres-sure, which requires no adjustment on the dampener.

2. Operation

3. Stopping

Order Operation Check items1 Start pump. Confirm if liquid is discharged normally.

3 Refer to Operating Instruction of pump for details of pump operation.4 If no abnormality is found, start full operation.

2 Adjust pump discharge capacity andpressure.Confirm by pressure gauge if air pressure does notexceed specified pump pressure.

Caution

Check to see that pneumatic pressure is applied to auto-dampener while pump operation. If pneumaticpressure is not applied, pulsation dampening effect may be reduced or bellows may be deformed.In case the bellows of dampener is broken, it may happen the pumped liquid gets into pneumatic piping.Take suitable protective measure in the system.

Caution

Do not run pump in time-lag operation. Time-lag operation of pump may cause the damage of bellows ofauto-dampener in a short time. Also pulsation dampening effect can not be obtained if pump runs intime-lag operation. When auto-dampener is used, the time-lag should be zero. Time-lag operation : When proximity switch detects the bellows movement and the switching-over sig-nal is activated to solenoid valve, the delayed switching-over signal activation to operate the pump iscalled "time-lag operation". No time-lag operation happens if IWAKI controller (AC-1, FD, SC and FDC)is used. Pay attention to time-lag operation if pump is operated by programmable controller or so.

(1) Stop the pump according to the procedure mentioned in operating instructions of the pump and con-troller.

(2) Add the supply air to the auto-dampener while pump is stopped.

Caution

If air supply is interrupted while the pump discharge liquid pressure remains added, bellows may bedeformed. Do not fail to release the residual pressure of liquid.

(3) When the pump is not operated for a long time, confirm that the liquid pressure is released from the damp-ener to interrupt the air supply to it.

- 17-

1. Troubleshooting........................................18

2. Maintenance & inspection .....................19

3. Consumable parts ...................................19

Maintenance

- 18-

1. Troubleshooting

Large pulsation(Beyond spcifiedrange)

Trouble• Too high discharge pres-

sure.• Air pressure adjusting

valve at intake or exhaustside is clogged.

• Worn valve seat.• Too low supply air pres-

sure to dampener.

• Broken bellows insidedampener

Cause Countermeasure• Check filter and replace.

• Disassemble and clean. (*)

• Replace valve seat. (*)• Keep the supply air pres-

sure to dampener.

• Replace bellows unit. (*)

• Broken bellows.(Air is mixed in dischar-ged liquid.)

• Replace bellows unit. (*)

• Stud bolts are not tight-ened enough.

• Deterioration or defor-mation of O-ring.

• Tighten.• Replace O-ring(*)

• Air pressure adjustingvalve at exhaust side isclogged.

• Disassemble and clean. (*)

Inspection & check itemsa. Filter blinding or dryingb. If filter is wetted enough.a. Check air filter.

a. Refer to item Air Pipingon Installation section.

Air is mixed inthe liquid.

a. If specified air pressureis added to dampener.

b. If the dampener is notused beyond specifiedpressure

Liquid leaks. a. If specified air pressureis added to dampener.

b. If the dampener is notused beyond specifiedpressure.

c. If residual pressure isreleased.

Air leaks(Cylinder)

a. Refer to Periodic Inspec-tion on Maintenance andInspection.

Air leaks(Air exhaustingpart)

a. Check air filter.

Note: Items marked (*) are done by IWAKI.

- 19-

2. Maintenance & inspection

Warning• Wear protectors

When piping is removed or pump is disassembled/assembled, wear protective gear such as safety gog-

gles and protective gloves etc.

• Release pressure inside pipingIf pressure is not released from piping, liquid may be splashed. Release residual pressure before main-

tenance works start.

• Interruption of supplied airInterrupt air supply to dampener before maintenance works start.

• Power offAlways turn off power supply prior to maintenance works. Display a sign near power supply switch to

notify other person that someone is "WORKING".

Turned on, by mistake, power supply during maintenance works may lead to personal injury. Each

operator must pay special attention.

(1) Routine inspectiona. Confirm if the liquid is discharged normally from dampener (pump).b. Confirm the vibration width of pressure gauge to see no change in discharge capacity and pressure.c. Confirm if pipe does not vibrate abnormally.

(2) Periodical inspection (Make the inspection once a month or more.)If the air leakage through cylinder part is confirmed, stop the pump after pump discharge side pressure isreleased to leave it until it is cooled down. And then, securely tighten the cap nuts of dampener.

Tightening torque

PDA-20W PDA-40W6.4 N · m 6.4 N · m 12.7 N · m

PDA-80W

No. Q'ty/unit17 2 One year (Continuous operation)

Time to be replacedPartsValve seat

Note: Time to be replaced is reference but not guarantee. Durability of consumable parts depends on pressure, tempera-ture and characteristics of liquid.

3. Consumable parts

Repair is done by IWAKI.


IWAKI Auto-dampener

PDA-W Series

Instruction Manual

T389-1 '04/04

U.S.A.AustraliaSingaporeIndonesiaMalaysiaTaiwanThailandHong KongChinaChinaChinaChinaPhilippinesKorea

TEL : (1)508 429 1440TEL : (61)2 9899 2411TEL : (65)6316 2028TEL : (62)21 690 6606TEL : (60)3 7803 8807TEL : (886)2 8227 6900TEL : (66)2 322 2471TEL : (852)2 607 1168TEL : (86)750 380 9018TEL : (86)20 8435 0603TEL : (86)10 6442 7713TEL : (86)21 6272 7502TEL : (63)2 888 0245TEL : (82)2 3474 0523

GermanyItalyDenmarkSwedenFinlandNorwayFranceU.K.SwitzerlandAustriaHollandSpainBelgium

TEL : (49)2154 9254 0TEL : (39)02 990 3931TEL : (45)48 24 2345TEL : (46)8 511 72900TEL : (358)9 2742714TEL : (47)66 81 16 60TEL : (33)1 69 63 33 70TEL : (44)1743 231363TEL : (41)26 674 9300TEL : (43)2236 33469TEL : (31)297 241121TEL : (34)943 630030TEL : (32)1367 0200

: IWAKI WALCHEM Corporation: IWAKI Pumps Australia Pty. Ltd.: IWAKI Singapore Pte. Ltd.: IWAKI Singapore (Indonesia Branch): IWAKIm Sdn. Bhd.: IWAKI Pumps Taiwan Co., Ltd.: IWAKI (Thailand) Co.,Ltd.: IWAKI Pumps Co., Ltd.: IWAKI Pumps (Guandong) Co., Ltd.: GFTZ IWAKI Engineering & Trading (Guangzhou): IWAKI Pumps Co., Ltd. (Beijing): IWAKI Pumps (Shanghai) Co., Ltd.: IWAKI Chemical Pumps Philippines, Inc.: IWAKI Korea Co.,Ltd.

FAX : 508 429 1386FAX : 2 9899 2421FAX : 6316 3221FAX : 21 690 6612FAX : 3 7803 4800FAX : 2 8227 6818FAX : 2 322 2477FAX : 2 607 1000FAX : 750 380 9078FAX : 20 8435 9181FAX : 10 6442 7712FAX : 21 6272 6929FAX : 2 843 3096FAX : 2 3474 0221

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IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 JapanTEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwakipumps.jp)

: IWAKI EUROPE GmbH: IWAKI Italia S.R.L.: IWAKI Pumper A/S: IWAKI Sverige AB: IWAKI Suomi Oy: IWAKI Norge AS: IWAKI France S.A.: IWAKI PUMPS (UK) LTD.: IWAKI (Schweiz) AG: IWAKI (Austria) GmbH: IWAKI Holland B.V.: IWAKI Iberica Pumps, S.A.: IWAKI Belgium n.v.

FAX : 2154 1028FAX : 02 990 42888FAX : 48 24 2346FAX : 8 511 72922FAX : 9 2742715FAX : 66 81 16 61FAX : 1 64 49 92 73FAX : 1743 366507FAX : 26 674 9302FAX : 2236 33469FAX : 297 273902FAX : 943 628799FAX : 1367 2030

PD-15-30-60(ENG).pdfPDA_H(ENG).pdfPDA_W(ENG).pdf

iwaki pulse dampener · 2007. 5. 24. · (12.7 ×9.52 mm dia.) (19.05 ×15.83 mm dia.) (25 ×22 mm...

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