Troubleshooting
54
333347F
Flush Pressure Relief Valve
Perform this procedure when directed in the Trouble-
shooting table.
1.
With the system active at the required adhesive
temperature, set the air motor air pressure to 20 psi
(140 kPa, 1.4 bar).
2.
Remove the air line (36) from the pressure relief
valve.
3.
Plug air line and allow the air motor to cycle.
4.
Re-connect air line to relief valve and check whether
the system will stall.
5.
If system still does not stall,
purge ten pump cycles
of material through one applicator.
6.
Repeat this entire procedure until no additional air is
expelled from the applicator.
Check the Pump Air Solenoid Operation
Perform this procedure when directed in the Trouble-
shooting table.
NOTE:
System must be up to operating temperature for
pump solenoid to trigger on.
1.
If the heating system and pump is disabled,
press
to enable the heaters and pump.
2.
Wait for system to reach the temperature setpoints.
3.
Set pump air pressure to 20 psi (140 kPa, 1.4 bar).
4.
Remove the 3/8 in. OD air line from the air motor.
5.
Verify that air is flowing through the air line.
6.
If air is not flowing,
check the wiring between J13
and the pump solenoid.
Check Heater Rod Resistance
Use the table to determine if heater elements need to be
replaced.
F
IG
. 28
WLD
36
Ref. Element
HM25
HM50
Wattage
Ohms
Wattage
Ohms
208
Band
Heater
1250
43.5-48.5
2000
27-31
209
Melter
Rod
500
109-121
1500
36.5-40.5
210 Base Rod
1500
36.5-40.5
1000
54-61
210 Pump Rod
1500
36.5-40.5
1000
54-61
Summary of Contents for 24T918
Page 16: ...Component Identification 16 333347F ...
Page 103: ...Accessories 333347F 103 ...
Page 129: ...Technical Data 333347F 129 ...