Nordson Encore XL Powder, Manual

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© 2021 Nordson Corporation
1607027-01
7-10 Troubleshooting
Filter Section Problems
Problem Possible Cause Corrective Action
1. Fan will not start
Power is off Turn on the power supply.
Fuse failure Replace any blown fuses.
Motor overload protector
tripped
Reset the overload protector.
Wiring fault Check the motor wiring. Repair or replace wiring as necessary.
Motor failure Check the motor. Replace the motor if necessary.
Contactor fault Repair or replace the motor contactor.
2. Loss of extraction
Cartridge filters clogged
Check the cartridge filter pulse sequence and pulse the cartridge
filters for 30 minutes. Replace the cartridge filters if necessary.
Pulse pressure too low Set the pulse air pressure to 2.75 bar (40 psi).
Pulse valve fault Replace the pulse valve.
3. Final filters
clogged; powder in
the fan section
Leaking cartridge filter
gaskets, or damaged
filter media
Make sure the gaskets are sealing correctly. If you can slip a 0.4-
mm (0.015-in.) feeler gauge between the gasket and the sealing
surface, tighten the mounting nuts to compress the gaskets.
If the gaskets continue to leak, remove the cartridges. Clean
and inspect the gaskets, sealing surfaces, and filter media.
Replace the cartridges if the gaskets or filter media are damaged.
Replace clogged final filters.
Refer to Cartridge Filter Replacement in the Repair section for
instructions.
4. Fan stops
unexpectedly
Final filter pressure too
high
The final filter pressure switch is detecting abnormal pressure at
the final filters. Refer to Problem 3 in this table.