intelligent intake valve instructions - waters · require manual adjustment. recommended spare...

Intelligent Intake Valve (i2Valve) maintenance instructions

Note: This document is an addendum to Revision C of the ACQUITY UPLC System Operator’s Guide.

Overview

When installed on Waters ACQUITY UPLC® Systems, the Waters Intelligent Intake Valve (i2Valve) achieves faster system priming and startup times. More robust operation and highly repeatable system performance are achieved with difficult-to-pump solvents because disturbances to solvent flow in the inlet lines are minimized.

The i2Valve's actuation is precisely controllable, and the algorithms responsible for its operation respond instantly to the fast, pressure-sensing capability of the ACQUITY UPLC binary solvent manager.

A replaceable cartridge assembly and an actuator assembly serve as the i2Valve’s major components. An applied current generates a force, timed with the motion of the pump plungers, that pushes a ball off its seat in the cartridge assembly. The effect is to closely synchronize the valve performance with pump operation.

Contents:

Topic Page

Overview 1

Maintenance schedule 2

Maintenance considerations 2

Spare parts 3

Replacing the i2Valve actuator 4

Replacing the i2Valve cartridge 13

Replacing the inlet filter 17

Replacing the accumulator check valve 19

71500144906, Rev. B

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Waters and ACQUITY UPLC are registered trademarks of Waters Corporation.Phillips is a registered trademark of Phillips Screw Company.

All other trademarks are the sole property of their respective owners.Copyright © 2007 Waters Corporation.

Maintenance scheduleWaters recommends that you perform the following routine maintenance on the i2Valve to ensure reliable operation and accurate results. Under heavy usage or when using aggressive solvents, perform these maintenance tasks more frequently.

Maintenance considerationsObserve these warning and caution advisories when you perform maintenance on the i2Valve.

Recommended routine maintenance schedule :

Maintenance procedure Frequency For information...

Replace the i2Valve cartridge Once every year or as needed

See page 13

Replace the inlet filter Once every year or as needed

See page 17

Replace the accumulator check valve

Once every year or as needed

See page 19

Replace the i2Valve actuator Five years from the date of manufacture or as needed

See page 4

Warning: To prevent injury, always observe good laboratory practices when you handle solvents, change tubing, or operate the system. Know the physical and chemical properties of the solvents you use. See the Material Safety Data Sheets for the solvents in use.

Warning: To avoid electric shock, do not open the power supply cover. The power supply does not contain user-serviceable parts.

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Requirement: To maintain the efficiency of the binary solvent manager and to obtain accurate, reproducible chromatograms, use only MS-grade solvents, water, and additives. For details, see Appendix D of the Waters ACQUITY UPLC System Operator’s Guide.

Spare parts

This section lists recommended spare parts for the i2Valve. Unlisted parts are not recommended for replacing by customers.

Caution: • To avoid damaging the i2Valve actuator, do not attempt to

introduce pressurized liquid or gas through the valve's inlet or outlet ports.

• To avoid damaging electrical parts, never disconnect an electrical assembly while power is applied to an instrument. To completely interrupt power to an instrument, set the power switch to Off, and then unplug the power cord from the AC outlet. After power is removed, wait 10 seconds before you disconnect an assembly.

• To prevent circuit damage because of static charges, do not touch integrated circuit chips or other system instruments that do not require manual adjustment.

Recommended spare parts for the i2Valve :

Item Part Number

Check valve assembly, double ball and seat 700002968

i2Valve actuator assembly 700003557

i2Valve cartridge assembly 700003563

Inline filter assembly 700002869

Tube assembly, SSV to i2Valve 430001443

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Replacing the i2Valve actuator

Required materials

• i2Valve

• Particle-free, powder-free, non-latex gloves

• #0 Phillips screwdriver

• 5/16-inch open-end wrench

To replace the i2Valve actuator:

1. Power-off the binary solvent manager.

Tip: The binary solvent manager is referred to as “pump” on the warning label affixed to the i2Valve actuator.

2. Move the solvent bottles to a location below the solvent manager head.

Caution: To prevent contamination, wear particle-free, powder-free, non-latex gloves when replacing the i2Valve actuator.

Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the i2Valve actuator.

Warning: Solvent spill risk. Failure to move the solvent bottles to alocation below the solvent manager head can result in solvent spills

Caution: Failure to grasp the i2Valve connector by the knurled diameter could result in damage to the connector or cable.

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3. Grasp the i2Valve connector by the knurled diameter and pull it toward you to disconnect it from the receptacle.

4. Loosen the tube fitting on the inlet filter.

Connector receptacle

i2Valve connector

Knurled diameter

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5. Unscrew the inlet filter assembly from the side of the i2Valve actuator.

6. Use the 5/16-inch open-end wrench to loosen the shell nut.

Inlet filter assembly

i2Valve actuator

Tube fitting

5/16-inch wrench

Shell nut

6

t

ip

7. Remove the i2Valve actuator from the bottom of the primary pump head.

Caution: • When you remove the valve assembly, ensure the PEEK washer,

which is normally on the top face of the i2Valve cartridge, does noremain in the head.

• Never place the actuator assembly or electrical connector in the drtray.

TP02770

Bottom of primary pump head

i2Valve actuator

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8. Insert the new PEEK washer into the new cartridge. Make sure the chamfered edge of the washer faces away from the cartridge.

9. Ensure the clamping plates are loose and in their fully open position.

10. Insert the cartridge into the i2Valve actuator with the grooved end first.

PEEK washer

Check valve cartridge

Chamfered edge facing away from check valve

Grooved end of cartridge

i2Valve actuator

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11. Squeeze the two clamping plate tabs on the i2Valve actuator with one hand to clamp the cartridge into the actuator. Ensure the clamping plates are fully in and the check valve is clamped.

12. While squeezing the clamping plate tabs, use the #0 Phillips screwdriver to tighten the four screws that secure the plates.

Clamping plate tab

Clamping plate tab

Clamping plates

Phillips screwdriver

Screws (4)

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13. Orient the valve so that the cable exits from the left side of the i2Valve assembly. Insert the new valve actuator into the bottom of the primary pump head, and route the cable behind the valve actuator.

14. Finger tighten the shell nut to secure the valve, and then use the 5/16-inch open-end wrench to tighten the nut an additional 1/8-turn.

5/16-inch wrench

Shell nut

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15. Insert the inlet filter assembly into the inlet port on the i2Valve assembly, and tighten it securely.

16. Finger tighten the tube fitting on the inlet filter assembly to the extent possible.


i2Valve actuator

Tube fitting

11

17. Align the red dot on the i2Valve connector with the red dot on the receptacle, in the twelve o’clock position, and insert the connector into the receptacle.

18. Power-on the binary solvent manager.

Red dot on connector

Red dot on receptacle

Connector receptacle

i2Valve connector

12

.

es

Replacing the i2Valve cartridge

Required materials

• i2Valve cartridge


• #0 Phillips screwdriver


To replace the i2Valve cartridge:


Tip: The binary solvent manager is referred to as “pump” on the warning label affixed to the i2Valve actuator.


3. Remove the i2Valve assembly from the bottom of the primary pump head. See steps 3 through 7 starting on page 5.

4. Use the #0 Phillips screwdriver to loosen the four screws that secure the plates 1/2-turn for the plates to spring open. The shell nut should still be free to rotate.

Caution: To prevent contamination, wear particle-free, powder-free, non-latex gloves when replacing the i2Valve cartridge.

Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the i2Valve cartridge.


Caution: When you remove the i2Valve assembly, ensure the PEEK washer, which is normally on the top face of the i2Valve cartridge, donot remain in the head.

Caution: To avoid damaging the i2Valve actuator, do not back the screws out all the way.

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Tips:

• Avoid touching the clamping plate tabs when loosening the screws.

• The shell nut can be rotated to access all four screws.

5. Remove the cartridge from the i2Valve actuator when both plates are in the maximum open position. Ensure that the low pressure gasket has been removed with the cartridge.

Tip: If you cannot remove the cartridge from the valve actuator, rotate the cartridge 1/2-turn and then remove it.

6. Carefully remove the new cartridge and washer from the packaging.

TP02788


Screws (4)

Shell nut

Clamping plate tab

Clamping plate tab

Clamping plates

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7. Insert the new PEEK washer into the new cartridge. Make sure the chamfered edge of the washer faces away from the cartridge.

8. With the clamping plates still open, insert the cartridge into the i2Valve actuator with the grooved end first.

PEEK washer

Check valve


Low pressure gasket (factory installed)

Grooved end of cartridge

i2Valve actuator

15

9. Squeeze the two clamping plate tabs on the i2Valve actuator with one hand to clamp the cartridge into the actuator. Ensure the clamping plates are fully in and the check valve is clamped.

10. While the clamping plate tabs are being squeezed, use the #0 Phillips screwdriver to tighten the four screws that secure the plates.

11. Install the i2Valve assembly on the primary pump head. See steps 13 through 18 starting on page 10.

Clamping plate tab

Clamping plate tab

Clamping plates


Screws (4)

16

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Replacing the inlet filter

Required materials

• Inlet filter


To replace the inlet filter:



3. Loosen the tube fitting on the inlet filter assembly.

4. Unscrew the inlet filter assembly from the i2Valve actuator.

Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the inlet filter.


i2Valve actuator


Tube fitting

17

5. Disassemble the inlet filter by unscrewing the two halves of the inlet filter assembly.

6. Remove the inlet filter from the tube.

7. Insert the metal locking ring onto the tube. Ensure that the flat side of the metal locking ring is facing toward the tube fitting.

8. Insert the tube into the new inlet filter housing.

9. Screw the two halves of the inlet filter assembly together. Do not fully tighten at this time.

10. Insert the inlet filter assembly into the inlet port on the i2Valve actuator, and tighten it securely.

Two halves of inlet filter assembly

Inlet filter housing

Tube fitting

Metal locking ring

Tube

18

e.

.

11. Finish tightening the tube fitting on the inlet filter assembly to the extent possible.


Replacing the accumulator check valve

Required materials

• Accumulator check valve assembly





To replace the accumulator check valve:



3. Use the 5/16-inch open-end wrench to hold the check valve in place.

Caution: To prevent contamination, wear particle-free, powder-free, non-latex gloves when replacing the check valve.

Caution: To avoid damaging electronic components, power-off the binary solvent manager before replacing the accumulator check valv


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4. Use the 1/4-inch open-end wrench to disconnect the tubing fitting from the check valve.

5. Use the 1/2-inch open-end wrench to loosen the check valve, and remove the check valve assembly from the solvent manager head.

Accumulator check valve

Tubing fitting

1/4-inch open-end wrench


TP02822

Accumulator check valve


Solvent manager head

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6. Carefully remove the new check valve and washer from the packaging.

7. Insert the new PEEK washer into the new check valve. Make sure the chamfered edge of the washer faces away from the check valve.

8. Insert the check valve assembly into the solvent manager head, and tighten the check valve nut 1/8-turn beyond finger-tight.

9. Use the 5/16-inch open-end wrench to hold the check valve in place. Reattach the fitting to the check valve, and tighten the compression screw 1/4-turn beyond finger-tight for existing stainless steel tubing, or 1/2-turn beyond finger-tight for new stainless steel tubing.


Caution: When you remove the check valve, make sure you also remove the PEEK washer.

PEEK washer

Check valve


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intelligent intake valve instructions - waters · require manual adjustment. recommended spare...

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