Troubleshooting
6-21
P/N 7105144G
2008 Nordson Corporation
VersaBlue_NW
Filling Valve (Option)
Problem Possible Cause Corrective Action
No material No compressed air to control
module or compressed air set too
low
Connect compressed air and set to
correct value
Control module defective Replace control module
Filling valve does not
heat
Temperature not set Set on control panel of VersaBlue
melter or on filling unit
Plug not connected Regulating via VersaBlue
Connect to corresponding hose
receptacle
Regulating via filling unit
Connect to hose receptacle
Temperature sensor(s) defective Replace
Filling valve does not
reach set temperature
Heater cartridge(s) defective Replace
Solenoid valve does not
switch
Solenoid valve is not triggered or
is defective
Trigger via customer’s PLC or
replace solenoid valve
Others
Problem Possible Cause Corrective Action
Leakage at pump shaft seal Pump shaft seal is worn Tighten the gland bolt
− Replace pump
Material pressure too low,
output quantity too low
Gear pump is worn Replace pump
Gear pump blocked Processed material too cold Correct temperature setting
(observe data sheet of material
manufacturer)
Foreign material in gear pump Replace pump
Leakage at gun during
heatup phase
Safety valve does not open
(expansion pressure)
Replace safety valve
Continued...
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