Prodigy HDLV Generation II Pump, Pump Manifold, and Circuit Board
29
Part 1081195-11
E
2018
Nordson Corporation
Troubleshooting
WARNING:
Allow only qualified personnel to perform the following tasks. Follow the safety
instructions in this document and all other related documentation.
This section contains troubleshooting procedures. These procedures cover only the most common problems
that you may encounter. If you cannot solve the problem with the information given here, contact your local
Nordson representative for help.
Problem
Possible Cause
Corrective Action
1. Reduced powder
output (pinch valves
are opening and
closing)
Blockage in the powder tubing to
the spray gun
Check the tubing for blockages.
Purge the pump and spray gun.
Defective pump air flow control
valve
Clean the pump air flow control valve.
Refer to
Flow Control Valve Cleaning
on page 36 for instructions.
If the problem persists, replace the
pump air flow control valve. Refer to
Flow Control Valve Replacement
on
Defective pump check valve
Replace the check valves.
2. Reduced powder
output (pinch valves
are not opening and
closing)
Defective pinch valve
Replace the pinch valves and filter
discs.
Defective solenoid valve
Replace the solenoid valve. Refer to
Solenoid and Flow Control Valve
Functions
which solenoid valve controls the
affected pinch valve.
Defective pump check valve
Replace the check valves.
3. Reduced powder
input (loss of suction
from feed source)
Blockage in the powder tubing
from the feed source
Check the tubing for blockages.
Purge the pump and spray gun.
Loss of vacuum at the vacuum
generator
Check the vacuum generator for
contamination.
Check the pump panel exhaust
muffler. If the exhaust muffler
appears to be plugged, replace it.
Defective pump air flow control
valve
Clean the pump air flow control valve.
Refer to
Flow Control Valve Cleaning
on page 36 for instructions.
If the problem persists, replace the
pump air flow control valve. Refer to
Flow Control Valve Replacement
on
Continued...
