section 6 troubleshooting - welcome to nordson...
TRANSCRIPT
Troubleshooting 6-1
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
Section 6Troubleshooting
WARNING: Allow only personnel with appropriate training and experienceto operate or service the equipment. The use of untrained or inexperiencedpersonnel to operate or service the equipment can result in injury, includingdeath, to themselves and others, and damage to the equipment.
This section provides quick-reference information for diagnosing melterfaults indications as well as comprehensive melter diagnostic informationthat is provided in flowchart format. When required, the troubleshootingflowchart will refer you to diagnostic procedures provided later in thissection.
If you cannot resolve the problem using the troubleshooting flowchart,contact your Nordson representative for technical assistance.
400/480 Volt Melters Refer to Appendix E for information about troubleshooting the transformer,400/480 volt heater information, and information about parts that arespecific to 400/480 volt melters.
NOTE: With the exception of power supply and heater failure problems, theinformation provided in this section applies to all ProBlue adhesive melters.
Safety� Never disconnect cables from, or reconnect cables to, the main board
while the melter is energized.
� Before breaking any hydraulic connection, always relieve systempressure. Refer to Section 5, Relieving System Pressure.
� Refer to the safety information provided with optional equipment.
� If the melter is removed from its sub-base for diagnostic checks orservice, ensure that the ground lead between the chassis and thesub-base is re-attached when the melter is reconnected to the sub-base.
Troubleshooting6-2
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
Melter Faults Table 6-1 lists the four types of melter faults, potential causes, and expectedcorrective actions.
Table 6-1 Melter Faults
DisplayCode/Sub-code Name Affect on Melter Cause Corrective Action
F1/None RTD Heaters turn off
The RTD for thecomponent indicated hasfailed or the componentwas disconnected fromthe melter.
Replace RTD
Check hose/gunconnections
See flowchart T.2
F2/None Under temperature Heaters turn off
The actual temperature ofthe component indicatedhas dropped below theunder temperature delta,which was set usingparameter 22.
Check for conditions thatmay cause a drop inambient temperature
Raise the set-pointtemperature of thecomponent
Replace RTD
See flowchart T.2
F3/None Over temperature Heaters turn off
The actual temperature ofthe component indicatedhas increased beyond theover temperature delta,which was set usingparameter 21.
Replace RTD
See flowchart T.2
F4/1 RAM test Melter stopsfunctioning
Internal RAM failure Replace CPU
F4/2 Internal Clock time Heaters remain on, butfault condition persists
Internal clock failure Replace CPU
F4/4Internal clockbattery backedRAM
Heaters remain on, butfault condition persists
Battery-backed RAMfailure
Replace CPU
F4/5 Internal clockbattery
Heaters remain on, butfault condition persists
Battery-backed RAMbattery dead
Replace CPU
F4/6 Analog-to-digital Melter stopsfunctioning
RTD analog-to-digitalconverter failed
Replace main board orCPU
F4/7 Analog-to-digitalcalibration
Melter stopsfunctioning
RTD analog-to-digitalconverter could not becalibrated
Replace main board orribbon cable, or CPU
F4/8 Main boardfeedback
Melter stopsfunctioning
Communication failurebetween main board andCPU
Replace main board,ribbon cable, or CPU
F4/A Thermostat Melter stopsfunctioning
Tank or manifoldthermostat is open
Replace thermostat, J7harness, or main board
F4/dCommunicationswith optional I/Ocard
Heaters remain on, butfault condition persists
Communication failurebetween CPU and theoptional I/O card
Replace the I/O card orCPU
F4/EFieldbuscommunicationsfailure
Alert output (if outputoption 6 is selected)Melter continues tooperate normally.
Fieldbus card failure. Replace the Fieldbus card
Troubleshooting 6-3
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
This page intentionally left blank.
a
b
Troubleshooting question and actionblocks
a) Question b) Action
Troubleshooting6-4
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
Using the Troubleshooting FlowchartThe flowchart, which is provided at the end of this section, is designed toassist you in diagnosing and correcting a complete or partial stop in hot meltoutput from the guns. The chart is organized in a simple question-actionblock format. If your response to a question is yes (Y), continue downwardin the chart to the next question or action block. If you response is no (N),continue to the right to the next question or action block. All diagnostic pathswithin the chart end with an action block that specifies one of the followingthree courses of action:
� Refer to information provided elsewhere in this manual
� Replace a component
� Complete a diagnostic procedure (DP.x)
To return your melter to service as quickly as possible, the chart is designedunder the assumption that it is preferable to immediately replace a faultyassembly as opposed to conducting detailed diagnostics and repair of theassembly while the melter is out of service.
Use of the chart assumes that the melter is installed correctly and that it isset up to support the current manufacturing process. Refer to Section 3,Installation, for information about installing and setting up the melter.
Troubleshooting Quick-checksBefore using the troubleshooting charts, confirm that:
� the correct voltage plug is installed on terminal J1. Refer to Section 4,Installation, for information about selecting the correct voltage plug.
� external inputs (if used) are functioning properly.
� the standby or clock functions are not turned on (if not required orexpected at the current time).
Identifying Electrical ComponentsTables 6-2 through 6-5 describe the circuit board indicators, connectionpoints, and test points that are referred to in the troubleshooting flowchart.Figure 6-1 illustrates the location of each of these circuit board components.
Troubleshooting 6-5
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
Table 6-2 Main PCA
Item Number Type DescriptionIndicators
DS1 LED (Yellow) Control signal for tank heater
DS2 Neon (Orange) Power available for tank and manifold heaters
DS3 LED (Yellow) Control signal for manifold heater
DS4 Neon (Orange) Power available into main board after fuses F3/F4
DS5 LED (Green) +5 VDC control voltage present on board
Fuses
F1/F2 — 15 A, 250 V, Fast-acting, 1/4 inch
F3/F4 — 2 A, 250 V, Slow-blow, 5 x 20 mm
Connection Points
J1/J2 Jumper Voltage configuration plug with and without neutral
TB1 Input AC power into board
TB2 Input/output Output contacts 1–6. Input contacts 7–14
J5 Input/output Control signal between main board and 6-hose expansion board
J6 Output Power harness for tank and manifold heaters
J7 Input/Output Control signal harness (RTD, control switch, thermostat, solenoid). See Figure6-2 for pin-out.
J8 Input/Output Analog/digital signal cable
J9 Output Control signal to 400/480 VAC transformer
J10 Input AC power out to 6-hose expansion board
Table 6-3 CPU board
Item Number Type DescriptionIndicators
Red LED — Indicates that CPU board has failed
Green LED — + 5 VDC control voltage is present at the CPU board
Connection Points
J1 Input/Output Control signal between main PCA and CPU
J5 Input/Output Control signal between I/O expansion card or Anybus card and the CPU
Test Points
TP2/TP4 Contacts 4.75–5.25 V control voltage present at CPU
Table 6-4 Hose/Gun Power Module
Item Number Type DescriptionIndicators
DS1 LED (Yellow) Control power present for odd numbered hose
DS2 LED (Yellow) Control power present for odd numbered gun
DS3 LED (Yellow) Control power present for even numbered hose
DS4 LED (Yellow) Control power present for even numbered gun
DS5 Neon (Orange) AC power present at module for odd hose/gun pair
DS6 Neon (Orange) AC power present at module for even hose/gun pair
Fuses
F1/F2 and F3/F4 — 6.3 A, 250 V, Fast-acting, 5 x 20 mm
Troubleshooting6-6
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
Table 6-5 6-Hose Expansion Board (optional)
Item Number Type DescriptionConnection Points
J1 Input/output Control signal between 6-hose expansion board and main board J5
J2 Input AC power input to 6-hose expansion board from main board J10
Troubleshooting 6-7
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
Figure 6-1 Electrical components
Troubleshooting6-8
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
Figure 6-2 Power and control harness
Troubleshooting 6-9
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
Figure 6-90 Location of the return port
Troubleshooting6-10
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
1
2
3
Figure 6-91 Pneumatic flow diagram
1. Pump air inlet2. Pressure discharge valve3. Melter air supply inlet
Troubleshooting 6-11
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
Diagnostic Procedures Use these diagnostic procedure when directed by the troubleshootingflowchart. If a diagnostic procedure fails to identify or correct the problem,return to the troubleshooting flowchart or contact your Nordsonrepresentative for technical assistance.
DP.1 Isolate a Failed Control Component 1. De-energize the melter. Refer to Section 1, Safety.
See Figure 6-1.
2. Disconnect the ribbon cable (P/N 1018283) from the main board.
3. Remove all of the hose/gun modules.
4. Re-energize the melter.
5. Check LED DS5 on the main board, and then do one of the following:
� If DS5 does not illuminate, replace the main board (P4 or P7melters, use P/N 1028322; P10 melter, use P/N 1038323).
� If DS5 does illuminate, go to step 6.
6. Complete the following steps to Isolate the cause of the problem bychecking individually checking each of the components that weredisconnected from the main board in steps 2 and 3 (CPU and eachhose/gun module).
a. De-energize the melter.
b. Reconnect each component (ribbon cable, and then each hose/gunmodule).
c. Re-energize the melter.
d. Observe LED DS5 (main board).
Replace the component (CPU or hose/gun module) that causes LEDDS5 not to illuminate when the melter is re-energized.
Troubleshooting6-12
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
DP.2 Check the Tank or Manifold RTD 1. Check the left display to determine which RTD (tank or manifold) is
faulting. The display indicates 1 if the tank RTD is faulting or 2 if themanifold RTD is faulting.
2. De-energize the melter. Refer to Section 1, Safety.
NOTE: If the melter has already cooled down, solidified hot melt within thepump/manifold will prevent you from removing the pump. To remove thepump, you must reheat the melter. Refer to Reheating the Melter During anF1 Fault at the end of this procedure.
See Figure 6-2.
3. Remove the RTD from its retention slot.
� For the tank RTD, refer to Remove the Tank RTD.
� For the manifold RTD, refer to Remove the Manifold RTD.
4. Allow the RTD to cool to room temperature or use a pyrometer toaccurately determine the temperature of the RTD.
5. When the temperature of the RTD is known, measure the resistance ofthe RTD across terminals 1 and 2 (tank RTD) or 3 and 4 (manifoldRTD).
See Figure 6-5.
6. Determine the expected resistance of the RTD at the knowntemperature. Compare the expected and measured resistance valuesand then do one of the following:
� If the measured resistance is within the expected resistance range,the RTD is functioning properly. Replace the main board (P4 or P7melters, use P/N 1028322; P10 melter, use P/N 1038323).
� If the measure resistance is not within the expected resistancerange, the RTD is defective. Replace the RTD (P/N 1028320).
Removing the tank RTD
Troubleshooting 6-13
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
DP.2 Check the Tank or Manifold RTD (contd)
Reheating the Melter During an F1 Fault 1. While holding both the Setup key and the Tank key, cycle the system
control switch on and then off.
The left display will flash dashes at one second intervals to indicate thatthe melter is heating in the override mode. The melter will remain in theoverride mode for 20 minutes and then automatically switch off.
WARNING: Risk of electrocution!The control switch will remain in the on position when the melterautomatically switches off after 20 minutes. Ensure that the control switch ismoved back to the off position.
2. If necessary, repeat step 1 to continue reheating the melter.
Remove the Tank RTD 1. De-energize the melter. Refer to Section 1, Safety.
2. Open the pump enclosure door.
3. While gently pulling the retention clip away from the RTD, slide the RTDout of its retention slot.
NOTE: If the RTD is functioning properly, apply thermal compound(provided in RTD service kit P/N 1028320) to the RTD before replacing it inthe retention slot.
Troubleshooting6-14
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
Remove the Manifold RTD 1. Relieve system pressure. Refer to Section 5, Relieving System
Pressure.
See Figure 6-93.
2. Isolate the pump from the manifold by rotating the isolation valve handleto its full vertical position (valve closed).
3. Remove the three pump-mounting bolts from the front of the pump body.
4. Rotate the top of the pump slightly toward the front of the melter, andthen pull the pump up and away from the manifold.
NOTE: The face of the pump body contains two M6 threaded holes.Bolts can be threaded into these holes to gain leverage when removingthe pump.
5. Remove the air line from the back of the pump.
6. Lift the pump clear of the melter.
7. Remove the RTD from its retention slot.
8. To replace the RTD and pump, reverse the order of steps 2 through 7.
CAUTION: Before replacing the pump, ensure that the cross-over tube isin-place between the pump and the manifold.
NOTE: Before replacing the RTD, apply thermal compound (P/N 1023441)to the RTD and its retention slot. To avoid damage to the RTD, ensure thatthe RTD is correctly inserted into its retention slot before replacing thepump.
Removing a hose/gunmodule
Troubleshooting 6-15
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
DP.3 Check the Operation of the Power Relay or Thermostats
The pre-conditions for this diagnostic procedure are as follows:
� The heater LED is illuminated.
� Indicator DS2 on the main board is not illuminated.
� Indicators DS5 and DS6 on all hose/gun modules are notilluminated.
1. De-energize the melter. Refer to Section 1, Safety.
2. Remove all of the hose/gun modules.
3. Re-energize the melter.
NOTE: If an F1 fault re-occurs after re-energizing the melter, reset themelter and turn the heaters back on.
4. Press the Heaters key.
See Figure 6-1.
5. Check indicator DS2 on the main board, and then do one of thefollowing:
� If indicator DS2 does illuminate, go to step 6.
� If indicator DS2 does not illuminate, got to step 7.
6. Locate a failed hose/gun module by individually replacing and checkingeach module as follows:
a. De-energize the melter.
b. Replace the hose/gun module.
c. Re-energize the melter.
d. Check if LED DS5 illuminates.
Replace the hose/gun module that causes LED DS5 not to illuminatewhen the melter is re-energized.
7. Complete one or both of the following checks to determine if the mainboard or a thermostat has failed:
a. Check for 21–27 VDC across receptacle J9, pins 1 and 4. If thevoltage is incorrect, replace the main board, otherwise go to b.
b. Check for 21–27 VDC across receptacle J9, pins 2 and 4. If thevoltage is incorrect, one or both of the thermostats or the wireharness connected to receptacle J7 has failed. Refer to DP.6 Checkthe Resistance of the Tank/Manifold Thermostat. If the voltage iscorrect, replace the main board.
Troubleshooting6-16
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
DP.4 Check the Operation of the Tank or Manifold TRIAC
See Figure 6-1.
WARNING: Risk of electrocution! Ensure that disconnect switch that servesthe melter is in the off position and locked.
1. De-energize the melter. Refer to Section 1, Safety.
2. Remove the protective rubber cover from the tank or the manifold heaterterminals (Whichever component is faulting).
3. Re-energize the melter and turn the heaters back on.
4. Press the Heaters key.
5. While watching LEDs DS1 and DS3 on the main board, measure thevoltage across the heater terminals as follows:
� For an F2 fault, voltage across the terminals should be within10 VAC of the voltage being supplied to the melter when DS1 andDS3 are illuminated.
� For an F3 fault, voltage across the terminals should be less than5 VAC when DS1 and DS3 are not illuminated.
Replace the main board if either of the above voltage conditions areincorrect (P4 or P7 melters, use P/N 1028322/P10 melter, useP/N 1038323).
Troubleshooting 6-17
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
DP.5 Check the Resistance of the Tank and Manifold Heaters
WARNING: Risk of electrocution! Ensure that disconnect switch that servesthe melter is in the off position and locked.
1. De-energize the melter. Refer to Section 1, Safety.
See Figure 6-1.
2. Disconnect the power harness plug (P/N 1024529) from receptacle J6on the main board.
3. Measure the resistance across pins 1 and 2 (tank) or pins 3 and 4(manifold) on the power harness plug, and then do one of the following:
� If the resistance is within the range shown in Table 6-6, go to step 4.
� If the resistance is not within the range shown in Table 6-6, go tostep 8.
NOTE: Refer to Appendix E for 400/480 Volt heater resistance data.
Table 6-6 Heater Resistance
Resistance
Model Tank Manifold
P4 46–58 ohms
P740 50 ohms
46–58 ohms
P1040–50 ohms
46 58 ohms
4. Individually check that the resistance between the chassis and pins1 and 2 (tank) or pins 3 and 4 (manifold) on the power harness plug, andthen do one of the following:
� If the resistance is greater than 1 Meg ohm, return to thetroubleshooting chart.
� If the resistance is less than 1 Meg ohm, go to step 5.
5. Remove the front and rear panels from the melter. Refer to Section 5,Cleaning the Melter, for the procedure to remove the panels.
Troubleshooting6-18
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
DP.5 Check the Resistance of the Tank and Manifold Heaters (contd)
CAUTION: Use two wrenches and minimal force when loosening ortightening the heater terminal connections. Using a single wrench orexcessive force to remove or tighten the terminals nuts can damage theheater.
6. Using two wrenches, loosen the nuts that hold the power harness leadsto the tank or the manifold heater terminal posts.
7. Individually check that the resistance between the chassis and eachtank or each manifold heater terminal post, and then do one of thefollowing:
� If the resistance is greater than 1 Meg ohm, replace the powerharness (P/N 1024529).
� If the resistance is less than 1 Meg ohm for the tank heater, replacethe tank. If the resistance is less than 1 Meg ohm for the manifold,replace the manifold heater. Refer to Section 7, Parts.
8. Remove the front and rear panels from the melter. Refer to Section 5,Cleaning the Melter, for the procedure to remove the panels.
9. Measure the resistance across the tank heater posts and the manifoldheater posts terminals, and then do one of the following:
� If the resistance is within the range shown in Table 6-6, replace thepower harness (P/N 1024529).
� If the resistance is not within the range shown in Table 6-6 replacethe tank or replace the manifold heater.
NOTE: The tank heater cannot be replaced independently.
Troubleshooting 6-19
Part 1024496C� 2004 Nordson Corporation Manual 41-PROBLUE-MA-01
250
240
230
220
210
200
190
180
170
160
150
140
130
RE
SIS
TA
NC
E I
N O
HM
S
250
240
230
220
210
200
190
180
170
290
280
270
260
RE
SIS
TA
NC
E I
N O
HM
S
TEMPERATURE
TEMPERATURE
Figure 6-92 RTD resistance vs. temperature
Troubleshooting6-20
Part 1024496C � 2004 Nordson CorporationManual 41-PROBLUE-MA-01
Figure 6-93 Removing the pump
Troubleshooting 6-21
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Sta
rt
Pro
Blu
eTr
ou
ble
sho
oti
ng
Flo
wch
arts
Go
toT.
3
+
−
+
−
Do
dash
es a
ppea
r in
bot
h th
e le
ftan
d th
e rig
ht d
ispl
ay?
Turn
the
cont
rol s
witc
h on
. D
oes
the
mel
ter
star
t?
Sto
p.
+
−
Ref
er t
o A
pp
end
ix C
.
+
−
Do
the
wor
ds “
UP
LO
Ad”
or
“CO
nF”
appe
ar a
cros
s th
edi
spla
y?
Is th
e w
ire h
arne
ss th
at is
conn
ecte
d to
term
inal
J7
on th
em
ain
boar
d lo
ose
or d
amag
ed?
Turn
th
e co
ntr
ol s
wit
ch o
ff,
secu
re o
r re
pla
ce t
he
har
nes
s,an
d t
hen
tu
rn t
he
con
tro
lsw
itch
bac
k o
n.
+
−
Is th
e fa
ult L
ED
illu
min
ated
?
+
−
Has
glu
e ou
tput
sto
pped
from
all
guns
? N
ote:
With
one
gun
syst
ems,
bot
h T.
4 an
d T.
5 m
ayne
ed to
be
exam
ined
to r
esol
veth
e pr
oble
m.
+
−
Is th
e re
ady
LED
illu
min
ated
?
+
−
Is th
e co
ntro
l pan
el il
lum
inat
ed?
Go
toT.
1
Go
toT.
4
Go
toT.
2
Go
toT.
5
Rep
lace
th
e co
ntr
ol s
wit
ch.
P/N
101
7947
.
Fo
r 40
0/48
0V m
elte
r tr
ou
ble
sho
oti
ng
, ref
er t
o A
pp
end
ix E
.
Troubleshooting6-22
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Thi
s pa
ge in
tent
iona
lly le
ft bl
ank
Troubleshooting 6-23
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Qui
ck C
heck
: V
erify
that
the
volta
ge p
lug
is c
orre
ct
Sta
rtin
g C
ondi
tion:
Con
trol
pan
el is
not
illu
min
ated
T.1
+
−
Is in
dica
tor
DS
4 on
the
mai
nbo
ard
illum
inat
ed?
See
Fig
ure
6-1.
+
−
+
−
Are
the
volta
ge p
lugs
atta
ched
secu
rely
to J
1 an
d J2
on
the
mai
nbo
ard?
See
Fig
ure
6-1.
+
−
Is th
ere
pow
er a
t the
dis
conn
ect
switc
h?
Are
the
wire
s to
the
elec
tric
alco
nnec
tor
into
TB
1 se
cure
?
See
Fig
ure
6-1.
Co
nn
ect
secu
rely
.
Ch
eck/
rep
air
the
pla
nt
wir
ing
.
Co
nn
ect
secu
rely
.
+
−
Is th
e po
wer
dis
conn
ect s
witc
hth
at is
ser
ving
the
mel
ter
turn
edon
?
Turn
th
e d
isco
nn
ect
swit
ch o
n.
Con
tinue
don
nex
tpa
ge...
.
Go
to T
.1.1
Troubleshooting6-24
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
+
−
Is th
ere
volta
ge o
n th
edo
wns
trea
m s
ide
of fu
ses
F3
and
F4
on th
e m
ain
boar
d?
See
Fig
ure
6-1.
+
−
Is th
ere
volta
ge a
cros
s th
e w
ires
in th
e po
wer
cab
le fr
om th
edi
scon
nect
sw
itch
to T
B1?
Rep
lace
th
e m
ain
bo
ard
asse
mb
ly.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
102
8323
.
Rep
lace
fu
ses
F3
and
F4.
P/N
102
8329
.
Rep
lace
th
e p
ow
er c
able
.
Sta
rtin
g C
ondi
tion:
Con
trol
pan
el is
not
illu
min
ated
T.1
Troubleshooting 6-25
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
+
−
Sta
rtin
g co
nditi
ons:
Con
trol
pan
el is
not
illu
min
ated
>
Dis
conn
ect s
witc
h is
on
>
DS
4 is
illu
min
ated
T.1.
1
+
−
+
−
Is th
e vo
ltage
acr
oss
TP
2 an
dT
P4
on th
e C
PU
boa
rd b
etw
een
4.75
and
5.2
5 V
DC
?
See
Fig
ure
6-1.
+
−
Is th
e gr
een
pow
er L
ED
on
the
CP
U b
oard
illu
min
ated
?
See
Fig
ure
6-1.
Is th
e re
d C
PU
war
ning
LE
Dill
umin
ated
?
See
Fig
ure
6-1.
Rep
lace
th
e C
PU
bo
ard
.
P/N
102
8325
.
Rep
lace
th
e m
ain
bo
ard
asse
mb
ly.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
102
8323
.
Co
nta
ct N
ord
son
fo
r te
chn
ical
assi
stan
ce.
Sec
ure
or
rep
lace
th
e ri
bb
on
cab
le.
P/N
101
8283
.
Rep
lace
th
e C
PU
.
P/N
102
8325
.
+
−
Iso
late
th
e fa
iled
co
ntr
ol
com
po
nen
t.
Ref
er t
o D
P.1.
Is L
ED
DS
5 on
the
mai
n bo
ard
illum
inat
ed?
See
Fig
ure
6-1.
Is th
e rib
bon
cabl
e be
twee
n th
em
ain
boar
d an
d th
e C
PU
boa
rdim
prop
erly
alig
ned,
loos
e or
visi
bly
dam
aged
?
See
Fig
ure
6-1.
Troubleshooting6-26
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Thi
s pa
ge in
tent
iona
lly le
ft bl
ank
Troubleshooting 6-27
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
+
−
Sta
rtin
g C
ondi
tion:
Fau
lt LE
D is
illu
min
ated
T.2
+
−
Is a
n F
1 (R
TD
) fa
ult i
ndic
ated
inth
e rig
ht d
ispl
ay?
Is a
n F
2 (u
nder
tem
pera
ture
) fa
ult
indi
cate
d in
the
right
dis
play
?
+
−
Is a
n F
3 (o
ver
tem
pera
ture
) fa
ult
indi
cate
d in
the
right
dis
play
?
+
−
See
Tab
le 6
-1.
Doe
s re
plac
ing
the
com
pone
nt(s
) lis
ted
unde
r th
ere
spec
tive
faul
t cod
e, a
nd th
enre
setti
ng th
e m
elte
r cl
ear
the
faul
t?
+
Is a
n F
4 fa
ult i
ndic
ated
in th
e rig
htdi
spla
y?
Sto
p.
Go
to T
.2.2
Go
to T
.2.1
Con
tinue
don
nex
tpa
ge...
.
Co
nta
ct N
ord
son
fo
r te
chn
ical
assi
stan
ce.
Troubleshooting6-28
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
Co
nfi
rm t
hat
th
e R
TD
has
faile
d.
Ref
er t
o D
P.2.
P/N
102
8320
.
+
−
Is th
e ta
nk k
ey L
ED
illu
min
ated
?
+
−
+
−
Is th
e rib
bon
cabl
e fr
om th
e6-
hose
exp
ansi
on b
oard
conn
ecte
d to
the
mai
n bo
ard,
alig
ned
and
func
tioni
ng p
rope
rly?
(J5
to J
1)
+
−
Are
all
of th
e gu
n-to
-hos
e an
dho
se-t
o-m
elte
r el
ectr
ical
cor
dset
sse
cure
ly c
onne
cted
? (
The
gun
or
hose
key
LE
D is
illu
min
ated
)
Doe
s th
e fa
ult r
e-oc
cur
if yo
um
ove
the
faul
ting
hose
/gun
pai
r to
a kn
own
good
hos
e/gu
n m
odul
e?
Rep
lace
th
e h
ose
or
gu
n R
TD
.
Ref
er t
o t
he
ho
se o
r g
un
man
ual
.
Co
nn
ect
secu
rely
or
rep
lace
.
Sec
ure
th
e el
ectr
ical
con
nec
tors
an
d t
hen
pre
ss t
he
rese
t ke
y.
Co
nta
ct N
ord
son
fo
r te
chn
ical
assi
stan
ce.
Sta
rtin
g C
ondi
tion:
Fau
lt LE
D is
illu
min
ated
T.2
Troubleshooting 6-29
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Res
et t
he
mel
ter
and
tu
rn t
he
hea
ters
bac
k o
n.
Allo
w t
he
un
it t
o c
om
e to
tem
per
atu
re.
Sta
rtin
g C
ondi
tions
:
Fau
lt LE
D is
illu
min
ated
>
F2
faul
t exi
sts
T.2.
1
Con
t.on ne
xtpa
ge
+
−
+
−
Is th
e po
wer
cab
le th
at c
onne
cts
to J
6 co
nnec
ted
secu
rely
?
+
−
Is th
e ta
nk k
ey L
ED
illu
min
ated
?
Was
hot
mel
t rec
ently
add
ed to
the
tank
?
Allo
w t
he
un
it t
o r
each
set-
po
int
tem
per
atu
re.
Sec
ure
or
rep
air
the
loo
seco
rdse
t th
en p
ress
th
e R
eset
key.
Ref
er t
o t
he
ho
se o
r g
un
man
ual
.
+
−
Is th
e af
fect
ed g
un o
r ho
seco
rdse
t loo
se, o
r ar
e th
e pi
nsbe
nt, l
oose
or
corr
oded
? (
the
gun
or h
ose
key
LED
is il
lum
inat
ed.)
Co
nn
ect
secu
rely
.
Co
nn
ect
secu
rely
.
+
−
Are
the
wire
s to
the
elec
tric
alco
nnec
tor
into
TB
1 se
cure
?
Sec
ure
or
rep
lace
.
+
−
Is th
e po
wer
lead
con
nect
ing
the
6-ho
se e
xpan
sion
boa
rd to
the
mai
n bo
ard
loos
e or
dam
aged
?(J
10 to
J2)
(P
10 o
nly)
Go
toT.
2.3
Ver
ify
that
th
e m
anif
old
hea
ter
has
fai
led
an
d r
epla
ce.
Ref
er t
o D
P.5.
P/N
101
7723
.
+
−
Doe
s th
e m
anifo
ld fa
il to
com
eto
tem
pera
ture
?
Troubleshooting6-30
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
+
−
+
−
Are
the
hose
and
gun
RT
Dfu
nctio
ning
cor
rect
ly?
+
−
Are
the
indi
cato
rs D
S5
or D
S6
onth
e af
fect
ed h
ose/
gun
mod
ule
illum
inat
ed?
See
Fig
ure
6-1.
Doe
s th
e fa
ult r
e-oc
cur
if yo
ure
plac
e th
e af
fect
ed h
ose/
gun
mod
ule
with
a k
now
n go
odm
odul
e?
Rep
lace
th
e m
ain
bo
ard
.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
102
8323
.
Rep
lace
th
e h
ose
or
gu
n R
TD
.
Rep
lace
th
e af
fect
ed h
ose
/gu
nm
od
ule
.
P/N
102
8328
.
Rep
lace
fu
se p
airs
F1/
F2
or
F3/
F4
on
th
e af
fect
ed h
ose
/gu
nm
od
ule
.
P/N
102
8331
.
See
Fig
ure
6-1
.+
−
Is in
dica
tor
DS
2 on
the
mai
nbo
ard
or D
S5
and
DS
6 on
any
hose
/gun
mod
ule
illum
inat
ed?
Ch
eck
the
op
erat
ion
of
the
po
wer
rel
ay o
r th
erm
ost
at.
Ref
er t
o D
P.3.
+
−
Co
rrec
t th
e h
ou
se v
olt
age
or
rep
lace
th
e h
ose
/gu
n w
ith
ap
rop
erly
rat
ed h
ose
/gu
n.
Sta
rtin
g C
ondi
tions
:
Fau
lt LE
D is
illu
min
ated
>
F2
faul
t exi
sts
T.2.
1Is
ther
e 24
0 V
AC
acr
oss
fuse
sF
1/F
2 or
F3/
F4
on th
e af
fect
edho
se/g
un m
odul
e, a
nd is
the
hose
/gun
wat
tage
pro
perly
rate
d?
Troubleshooting 6-31
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Res
et t
he
mel
ter
and
tu
rn t
he
hea
ters
bac
k o
n.
Allo
w t
he
un
it t
o c
om
eto
tem
per
atu
re.
Sta
rtin
g co
nditi
ons:
Fau
lt LE
D is
illu
min
ated
>
F3
faul
t exi
sts
T.2.
2
+
−
Is m
ore
than
one
com
pone
ntov
erhe
atin
g? (
Che
ck th
e ac
tual
tem
pera
ture
of t
he fa
ultin
gco
mpo
nent
.)
Rep
lace
th
e m
ain
bo
ard
.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
102
8323
.
+
−
+
−
Is th
e ta
nk k
ey L
ED
illu
min
ated
?
Are
the
tank
/man
ifold
TR
IAC
sop
erat
ing
prop
erly
?
Ref
er to
DP.
4.
Rep
lace
th
e ta
nk/
man
ifo
ld R
TD
.
P/N
102
8320
.
Ref
er t
o D
P.2.
+
−
Doe
s re
plac
ing
the
hose
or
gun
RT
D s
olve
the
prob
lem
?
+
−
Is D
S1,
DS
2, D
S3
or D
S4
on th
eho
se/g
un m
odul
e ill
umin
ated
cont
inuo
usly
?
Sto
p.
Rep
lace
th
e m
ain
bo
ard
.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
102
8323
.
Rep
lace
th
e h
ose
/gu
n
P/N
102
8328
.
Con
tinue
d on
next
pag
e
Troubleshooting6-32
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
Sta
rtin
g co
nditi
ons:
Fau
lt LE
D is
illu
min
ated
>
F3
faul
t exi
sts
T.2.
2
+
−
Doe
s in
stal
ling
an R
C s
nubb
er o
nth
e D
C d
rive
and
rese
tting
the
mel
ter
clea
r th
e fa
ult?
P/N
332
182.
+
−
Is th
ere
a D
C d
rive
near
the
mel
ter?
Sto
p.
+
−
Is th
e re
sist
ance
bet
wee
n th
egr
ound
leg
and
eart
h gr
ound
on
the
pow
er c
able
gre
ater
than
zero
?
+
−
Is th
e po
wer
cab
le g
roun
ded
toth
e m
elte
r’s c
hass
is?
Co
rrec
t o
r es
tab
lish
ear
thg
rou
nd
co
nn
ecti
on
wit
h t
he
mel
ter.
+
−
Doe
s in
stal
ling
an R
C s
nubb
er o
nth
e m
elte
r cl
ear
the
faul
t?
P/N
332
182.
Gro
un
d t
he
po
wer
cab
lep
rop
erly
to
th
e ch
assi
s.
Sto
p.
Co
nta
ct N
ord
son
fo
r te
chn
ical
assi
stan
ce.
Troubleshooting 6-33
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Sta
rtin
g co
nditi
ons:
Fau
lt LE
D is
illu
min
ated
>
F2
faul
t exi
sts
>
Tank
key
LE
D is
illu
min
ated
>
Hot
mel
t has
not
bee
n ad
ded
T.2.
3
+
−
+
−
Is th
e po
wer
har
ness
into
J6
conn
ecte
d se
cure
ly?
+
−
Is in
dica
tor
DS
2 in
the
mai
n bo
ard
illum
inat
ed?
Is th
e vo
ltage
acr
oss
the
dow
nstr
eam
sid
e of
fuse
s F
1/F
2or
F3/
F4
on th
e m
ain
boar
dbe
twee
n 17
0 an
d 26
5 V
AC
?
See
Fig
ure
6-1.
Co
nn
ect
secu
rely
.
Ch
eck/
corr
ect
the
ho
use
volt
age.
+
−
Doe
s re
plac
ing
fuse
s F
1 an
d F
2on
the
mai
n bo
ard
and
then
rese
tting
the
mel
ter
clea
r th
efa
ult?
P/N
102
8329
.
+
−
Are
indi
cato
rs D
S5
or D
S6
illum
inat
ed o
n an
y ho
se/g
unm
odul
e?
See
Fig
ure
6-1.
Sto
p.
Rep
lace
th
e m
ain
bo
ard
.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
102
8323
.
Ch
eck
the
op
erat
ion
of
the
po
wer
rel
ay o
r th
erm
ost
at.
Co
nn
ect
secu
rely
. R
efer
to
DP.
3
Con
tinue
don
nex
tpa
ge
Troubleshooting6-34
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
+
−
+
−
Are
the
tank
and
the
man
ifold
TR
IAC
s fu
nctio
ning
pro
perly
?
Ref
er to
DP.
4.
+
−
Is th
e re
sist
ance
cor
rect
for
the
tank
and
the
man
ifold
hea
ters
?
Ref
er to
DP.
5.
Doe
s re
plac
ing
the
mal
func
tioni
ngta
nk o
r m
anifo
ld R
TD
sol
ve th
epr
oble
m?
P/N
102
8320
.
Ref
er to
DP.
2.
Sto
p.
Rep
lace
th
e m
ain
bo
ard
.
P4/
P7 −
P/N
102
8322
.P
/10 −
P/N
102
8323
Rep
lace
th
e m
anif
old
hea
ter,
tan
k, o
r th
e p
ow
er h
arn
ess.
Man
ifo
ld h
eate
r −
P/N
101
7723
.Ta
nk −
P/N
101
8379
.P
ow
er h
arn
ess −
P/N
102
4529
.
Co
nta
ct N
ord
son
fo
r te
chn
ical
assi
stan
ce.
Sta
rtin
g co
nditi
ons:
Fau
lt LE
D is
illu
min
ated
>
F2
faul
t exi
sts
>
Tank
key
LE
D is
illu
min
ated
>
Hot
mel
t has
not
bee
n ad
ded
T.2.
3
Troubleshooting 6-35
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is n
ot il
lum
inat
ed
T.3
+
−
Is th
e he
ater
key
LE
Dill
umin
ated
?
+
−
Is th
e cl
ock
sche
dule
prog
ram
med
cor
rect
ly?
+
−
Is th
e cl
ock
LED
illu
min
ated
?
Th
e cu
rren
t cl
ock
sch
edu
le h
asth
e h
eate
rs t
urn
ed o
ff.
+
−
Is a
rem
ote
inpu
t bei
ng u
sed
toco
ntro
l the
hea
ters
?
Rep
lace
th
e o
per
ato
r p
anel
.
P4/
P7 −
P/N
102
8326
.P
10 −
P/N
102
8327
.
+
−
Doe
s pr
essi
ng th
e he
ater
key
turn
the
heat
ers
on?
Sto
p.
Go
toT.
3.1
Con
t. on
next
pag
e
Qui
ck c
heck
: S
ave
setti
ngs
and
rese
t the
mel
ter
to fa
ctor
y de
faul
t set
tings
. If
the
mel
ter
func
tions
nor
mal
ly, i
sola
te th
e in
put o
r ou
tput
pro
blem
.
Qui
ck c
heck
: M
anua
lly a
ctiv
atin
g th
e he
ater
key
or
the
pum
p ke
y w
ill o
verr
ide
and
elim
inat
e re
mot
e in
puts
as
the
caus
e of
a d
own
cond
ition
.
Troubleshooting6-36
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
Th
e m
elte
r is
in t
he
stan
db
ym
od
e.
Ref
er t
o S
ecti
on
4, S
tan
db
yK
ey.
+
−
Is th
e st
andb
y LE
D o
n?
+
−
Is th
e re
ady
dela
y co
untin
gdo
wn?
Wai
t fo
r th
e re
ady
del
ay t
oco
un
t d
ow
n.
Ref
er t
o A
pp
end
ix B
, par
amet
er4.
Co
nfi
rm t
hat
th
e ta
nk
hea
ter
has
fai
led
an
d r
epla
ce t
he
tan
k.
Tan
k −
P/N
101
8379
.
Ref
er t
o D
P.5.
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is n
ot il
lum
inat
ed
T.3
Troubleshooting 6-37
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is n
ot il
lum
inat
ed >
Rem
ote
inpu
t is
bein
g us
ed
T.3.
1
+
−
+
−
Is th
ere
a si
gnal
at t
he in
put o
nth
e m
ainb
oard
or
on th
e I/O
boar
d?
Is th
e pr
ogra
mm
ing
for
the
inpu
tco
rrec
t?
Wai
t fo
r th
e in
pu
t to
init
iate
th
eh
eate
rs o
r u
se t
he
hea
ter
key
tom
anu
ally
tu
rn t
he
hea
ters
on
.
Rep
rog
ram
th
e in
pu
t.
+
−
+
−
Is th
ere
pow
er a
cros
s th
e w
ires
from
the
pare
nt m
achi
ne to
the
inpu
ts o
n th
e m
ain
boar
d or
I/O
boar
d?
+
−
Is th
ere
a si
gnal
at t
he p
aren
tm
achi
ne?
Doe
s pr
essi
ng th
e he
ater
s ke
ytu
rn th
e he
ater
s on
?
Rep
lace
th
e I/O
exp
ansi
on
bo
ard
kit
.
P/N
103
6607
.
Insp
ect
the
wir
es f
or
dam
age
or
corr
osi
on
an
d r
epla
ce if
nee
ded
.
Ver
ify
that
th
e p
aren
t m
ach
ine
is w
ork
ing
pro
per
ly.
Ref
er t
oth
e ap
pro
pri
ate
man
ual
.
Rep
lace
th
e m
ain
bo
ard
.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
102
8323
.
Troubleshooting6-38
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Thi
s pa
ge in
tent
iona
lly le
ft bl
ank
Troubleshooting 6-39
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is il
lum
inat
ed >
No
hot m
elt o
utpu
t fro
m a
ll gu
ns
T.4
+
−
Has
the
pum
p st
oppe
d?
+
−
+
−
Is th
e pu
mp
cycl
ing
fast
?
Is th
ere
suffi
cien
t air
pres
sure
toth
e pu
mp
(gre
ater
than
0.7
bar
/10
psi)?
Lo
cate
an
d r
epai
r th
e le
ak.
+
−
Is h
ot m
elt l
eaki
ng fr
om th
esy
stem
som
ewhe
re b
etw
een
the
man
ifold
and
the
guns
?
Ad
just
th
e ai
r p
ress
ure
.
Th
e p
um
p p
isto
n b
all v
alve
isst
uck
op
en.
Ref
er t
o A
pp
end
ix D
.
Con
tinue
d on
next
pag
e
Go
to T
.4.1
Qui
ck c
heck
: M
anua
lly a
ctiv
atin
g th
e he
ater
key
or
the
pum
p ke
y w
ill o
verr
ide
and
elim
inat
e re
mot
e in
puts
as
the
caus
e of
a d
own
cond
ition
.
Qui
ck c
heck
: S
ave
setti
ngs
and
rese
t the
mel
ter
to fa
ctor
y de
faul
t set
tings
. If
the
mel
ter
func
tions
nor
mal
ly, i
sola
te th
e in
put o
r ou
tput
pro
blem
.
Troubleshooting6-40
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
+
−
Is th
e ta
nk e
mpt
y?
Turn
off
th
e p
um
p. F
ill t
he
tan
k.W
ait
for
the
un
it t
o h
eat
the
adh
esiv
e to
op
erat
ing
tem
per
atu
re.
+
−
Is th
e is
olat
ion
valv
e (s
hut o
ffva
lve)
clo
sed?
See
Fig
ure
6-6.
Op
en t
he
valv
e.
+
−
Is h
ot m
elt r
etur
ning
to th
e ta
nkth
roug
h th
e re
turn
por
t loc
ated
behi
nd th
e ta
nk s
cree
n?
See
Fig
ure
6-3.
Rep
lace
th
e p
ress
ure
dis
char
ge
valv
e.
P/N
102
8308
.
Ch
eck
and
cle
an t
he
ou
tlet
of
the
tan
k an
d t
he
cro
sso
ver
tub
e o
r cl
ean
/rep
lace
th
em
anif
old
.
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is il
lum
inat
ed >
No
hot m
elt o
utpu
t fro
m a
ll gu
ns
T.4
Troubleshooting 6-41
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
+
−
+
−
Is th
e pu
mp
LED
illu
min
ated
?
Is th
e pu
mp
LED
flas
hing
?
+
−
Are
you
usi
ng a
n op
tiona
l inp
ut(p
aram
eter
s 5
thru
10)
toen
able
/dis
able
the
pum
p?
Sto
p.
+
−
Doe
s pr
essi
ng th
e pu
mp
key
turn
the
pum
p on
?
Sto
p.
+
−
Doe
s re
plac
ing
the
oper
ator
’spa
nel a
nd th
en r
esta
rtin
g th
em
elte
r co
rrec
t the
pro
blem
?
P4/
P7 −
P/N
102
8326
.P
10 −
P/N
102
8327
.
Rep
lace
th
e C
PU
bo
ard
.
P/N
102
8325
.
Go
toT.
4.2
Con
tinue
d on
nex
t pag
e
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is il
lum
inat
ed >
No
hot m
elt o
utpu
t fro
m a
ll gu
ns >
Pum
p ha
s st
oppe
d
T.4.
1
Qui
ck c
heck
: M
anua
lly a
ctiv
atin
g th
e he
ater
key
or
the
pum
p ke
y w
illov
errid
e an
d el
imin
ate
rem
ote
inpu
ts a
s th
e ca
use
of a
dow
n co
nditi
on.
Troubleshooting6-42
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is il
lum
inat
ed >
No
hot m
elt o
utpu
t fro
m a
ll gu
ns >
Pum
p ha
s st
oppe
d
T.4.
1
+
−
Are
the
inpu
ts p
rope
rlyfu
nctio
ning
? (
Ref
er to
tabl
e T.
3.1
for
diag
nost
ic p
roce
dure
s)
+
−
Is th
e po
wer
LE
D o
n th
e I/O
boar
d ill
umin
ated
?
Wai
t fo
r th
e sy
stem
co
ntr
olle
rto
sen
d a
pu
mp
sta
rt s
ign
al.
Rep
air
or
rep
lace
th
em
alfu
nct
ion
ing
inp
ut.
Rep
lace
th
e I/O
exp
ansi
on
bo
ard
kit
.
P/N
103
6607
.
Troubleshooting 6-43
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Pro
ble
m
Turn
on
or
adju
st t
he
pla
nt
air
pre
ssu
re.
+
−
+
−
Is a
ir be
ing
supp
lied
to th
e to
p of
the
pum
p?
Is 2
4 V
DC
bei
ng s
uppl
ied
to th
eso
leno
id v
alve
(w
ire h
arne
ssle
ads
9 an
d 10
)?
Rep
lace
th
e p
neu
mat
icas
sem
bly
.
P/N
102
8307
.
+
−
+
−
Are
the
yello
w a
nd g
reen
air
lines
to th
e pn
eum
atic
ass
embl
yco
nnec
ted
prop
erly
?
See
Fig
ure
6-4.
Do
the
wire
s at
Pin
s 9
and
10 o
nth
e J7
wire
har
ness
lack
cont
inui
ty?
Con
nect
sec
urel
y. S
ee F
igur
e6-
2.
Rep
lace
th
e J7
wir
e h
arn
ess.
P/N
102
4600
.
Co
nn
ect
secu
rely
.
Rep
lace
th
e m
ain
bo
ard
.
P4/
P7 −
P/N
102
8322
.P
10 −
P/N
028
323.
+
−
Is th
e ai
r su
pply
to th
e m
elte
rtu
rned
off
or is
the
plan
t air
pres
sure
low
?
+
−
Is th
e op
erat
ing
air
pres
sure
set
corr
ectly
?
Ref
er to
Sec
tion
4.
Ad
just
th
e o
per
atin
g a
irp
ress
ure
fo
r th
e cu
rren
tm
anu
fact
uri
ng
pro
cess
.
Con
tinue
don
nex
tpa
ge...
.
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is il
lum
inat
ed >
No
hot m
elt o
utpu
t fro
m a
ll gu
ns >
Pum
p ha
s st
oppe
d >
Pum
p LE
D is
illu
min
ated
>
Tank
set
-poi
nt te
mpe
ratu
re is
OK
>
Pum
p is
not
con
trol
led
by a
rem
ote
inpu
t
T.4.
2
Troubleshooting6-44
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Con
tinue
d fr
om p
revi
ous
page
....
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is il
lum
inat
ed >
No
hot m
elt o
utpu
t fro
m a
ll gu
ns >
Pum
p ha
s st
oppe
d >
Pum
p LE
D is
illu
min
ated
>
Tank
set
-poi
nt te
mpe
ratu
re is
OK
>
Pum
p is
not
con
trol
led
by a
rem
ote
inpu
t
T.4.
2
+
−
Doe
s ad
hesi
ve fl
ow fr
om th
edr
ain
valv
e w
hen
it is
ope
n?
Cle
an o
r re
pla
ce t
he
man
ifo
ld.
P/N
102
2727
.
+
−
Is th
e fil
ter
clog
ged?
Ref
er to
Sec
tion
5.
Rep
lace
th
e fi
lter
.
P/N
102
8305
.
Rep
lace
or
rep
air
the
pu
mp
.
Ref
er t
o A
pp
end
ix D
.
Troubleshooting 6-45
Part 1024496C� 2004 Nordson Corporation Manual 41−PROBLUE−MA−01
Sta
rtin
g co
nditi
ons:
No
faul
ts >
Rea
dy L
ED
is il
lum
inat
ed >
Hot
mel
t out
put f
rom
som
e gu
ns
T.5
+
−
Is th
e di
spla
yed
tem
pera
ture
for
the
stop
ped
hose
/gun
cha
ngin
ger
ratic
ally
?
+
−
Is th
e se
t-po
int t
empe
ratu
reco
rrec
t for
the
hose
/gun
pai
r th
atha
s no
hot
mel
t out
put?
Ch
eck/
rep
lace
th
e h
ose
or
the
gu
n R
TD
.
Ref
er t
o t
he
ho
se o
r g
un
man
ual
.
+
−
+
−
Are
the
gun
sole
noid
, gun
driv
er,
or a
ir su
pply
to th
e gu
nfu
nctio
ning
pro
perly
?
Ad
just
th
e se
t-p
oin
tte
mp
erat
ure
.
WA
RN
ING
: R
elie
ve s
yste
mpr
essu
re b
efor
e co
ntin
uing
.
Is th
e gu
n no
zzle
or
an in
line
Sat
urn
filte
r bl
ocke
d?
Cle
an t
he
no
zzle
or
rep
lace
th
efi
lter
.
+
−
Rep
lace
/rep
air
the
sole
no
id/g
un
dri
ver
or
adju
stth
e ai
r su
pp
ly.
WA
RN
ING
: R
elie
ve s
yste
mpr
essu
re b
efor
e co
ntin
uing
.
Doe
s ho
t mel
t flo
w fr
om th
e gu
nbo
dy if
you
rem
ove
the
gun
mod
ule?
Rep
lace
th
e g
un
mo
du
le.
Ref
er t
o t
he
gu
n m
anu
al.
Rep
lace
th
e h
ose
.
+
−
WA
RN
ING
: R
elie
ve s
yste
mpr
essu
re b
efor
e co
ntin
uing
.
Doe
s ho
t mel
t flo
w fr
om th
e ho
seif
you
rem
ove
the
gun?
Rep
lace
th
e g
un
bo
dy,
hea
ter,
or
RT
D.
Ref
er t
o t
he
gu
n m
anu
al.
Troubleshooting6-46
Part 1024496C � 2004 Nordson CorporationManual 41−PROBLUE−MA−01
Thi
s pa
ge in
tent
iona
lly le
ft bl
ank