Troubleshooting
6-2
Part 7135457- E
E
2017 Nordson Corporation
Table of Troubleshooting
Problem
Possible Cause
Corrective Action
1. Hand marks inside of
the booth
General usage
2. Powder leakage from
booth
In Normal Operation
Air volume control damper
incorrectly set
Set to booth design velocities.
Filter elements blocked
Refer to
Afterfilter
manual
Final Filter elements blocked
Refer to
Afterfilter
manual
Excessive external draft
Close all factory doors or erect
barrier to eliminate draft
Parts are entering the booth too
hot
Increase cool down time from dry off
oven
On Colour Change
Check reasons above
See above
Check booth doors are closed
Close doors
Auto guns positioned too far into
booth
Move guns so nozzles are level with
the booth internal wall
3. Contamination on
colour change
Inadequate cleaning
Re-clean system
Insufficient or no spray to waste on
start up with new colour
Check recycle powder for
contamination, collect on aluminium
foil and cure with match until clean
Booth retains powder
Clean and condition booth as per set
up procedure
Cyclone retains impact fused
powder
Remove fused powder with solvent.
Do not scratch the internal surface of
the cyclone
Sieve screen damaged
Replace sieve screen
Refer to
Powder Feed Centre
manual
4. System efficiency low
High percentage overspray
Poor jigging
Re-jig
Poor gun triggering
Take corrective action
Poor powder
Discuss with supplier
Low gun Kv or wrong setting
See application manuals
Cyclone loss
Surge hopper seal faulty
Replace seal
Surge hopper over filling
Check recycle system for blockages
Inspection door seal leaking
Replace seal
