Technical data

Troubleshooting
6-4
P/N 7135049A
E 2007 Nordson Corporation
VBC_Siemens
No Material (Motor does not Rotate) (contd.)
Problem Possible Cause Corrective Action
Motor overheated Ambient temperature too high Decrease ambient temperature by
cooling or airing out
Fan cap dirty Clean
Pump blocked by foreign matter Replace pump
Pump operates too sluggish Replace pump
Material too cold Set temperature accordingly
Motor defective − Replace
Motor not supplied with
voltage
− Technical inspection
Motor controller fault
⇒ Switch melter off and on again with
main switch
Motor overheated Refer to Motor overheated
Motor controller overheated Decrease ambient temperature by
cooling or airing out
Clean cooling section of motor
controller
Short circuit Check motor cable
Overload (pump blocked by foreign
matter, pump too sluggish, material
too cold)
Refer to Motor overheated
Motor controller defective − Replace
NOTE: If more than one motor
controller has been replaced, the
screen Replacing motor controller
appears. Refer to section Repair,
Replacing Motor Controller.