Troubleshooting Tables - Nordson VersaBlue VBN 50 Manual

6-2
Troubleshooting

Troubleshooting Tables

Melter not Functioning
Problem
No line voltage
Main switch not switched
on
Main switch defective
Main circuit breaker
activated
Main circuit breaker
activated again
24 V power supply
DC
defective
One Channel does not Heat
Problem
Temperature controller
does not work properly
No Line Speed Signal
Problem
Parent machine not
operating
Polarity of line speed
voltage input is reversed
P/N 7146386A
Possible Cause
−
−
−
−
Check for short circuit in melter or
accessories
−
Possible Cause
Temperature controller defective
Possible Cause
−
−
VBN w/o Control System
Corrective Action
Connect line voltage
Switch on main switch
Replace main switch
Switch on main circuit breaker
−
Replace
Corrective Action
Replacing Temperature Controller
Corrective Action
Start up parent machine
Reverse polarity
E 2008 Nordson Corporation