Technical data

Troubleshooting
6-5
P/N 7135049A
E 2007 Nordson Corporation
VBC_Siemens
No Material (Motor Rotating)
Problem Possible Cause Corrective Action
Tank isolation valve closed − Open
Tank empty − Fill tank
Filter cartridge clogged − Clean or replace filter screen
Material supply hole to
pump or pump suction hole
clogged
Blocked by foreign objects/particles Detach pump and clean supply
hole or suction hole
Blocked by unmelted material Refer to Too Little Material
(Large tank and large quantity of
material)
Hose or gun is cold Hose/gun not connected
electrically
Insert plug into the corresponding
receptacle (Refer to wiring
diagram for assignment)
Hose/gun temperature channel not
activated
Activate on control panel
Hose/gun heater defective Replace hose
Replace heater cartridge(s) in gun
Too Little Material or Irregular Feeding
Problem Possible Cause Corrective Action
Material supply hole to
pump or pump suction hole
partially clogged
− Detach pump and clean supply
hole or suction hole
Tank isolation valve not
completely open
− Open
Filter cartridge partly
clogged
− Clean or replace filter screen
Pressure control valve
defective
− Clean or replace
Processing temperature set
too low
− Correct temperature setting
Pump block of the gear
pump worn
− Replace pump
Large tank and large
quantity of material
Material is not completely melted Set or increase the System ready
delay time on the control panel