Nordson Encore XL Powder, Manual

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© 2021 Nordson Corporation
1607027-01
7-2 Troubleshooting
Problem Possible Cause Corrective Action
2. Powder escaping
from enclosure
openings
Cartridge filters clogged;
pulsing not cleaning
filters
Pulse the cartridge filters to blow off powder.
Check the pulse air pressure.
Check the cartridge filter pulse sequence:
• If the Off duration is too short, the pulse manifold may not build
up enough pressure to blow off the cartridge filters.
• If the On duration is too short, not enough air is released to
blow off the filters.
• If the On duration is too long, the pulse manifold may not be
able to build up enough air pressure.
Replace the cartridge filters if pulsing does not correct the
problem.
Pulse pressure too low Increase the pulse pressure to the recommended level.
Pulse valve failed Replace the pulse valve.
Cartridge filters leaking
Check the cartridge filter gaskets and media for damage. Tighten
the mounting nut to compress the gaskets. Replace filters as
necessary.
Cross drafts interfering
with exhaust fan draw
Check for cross drafts at the enclosure opening. Eliminate or
divert drafts.
Fan rotation backward Reverse the motor rotation.
Access panels not
sealed
Tighten all access panels. Check and replace the panel gaskets
as necessary.
3. No feed hopper
fluidizing air
Exhaust fan not running,
interlock valve closed
Start the exhaust fan.
Check feed center E-Stop.
Check valve connections.
Fan interlock circuit or
solenoid valve circuit
defective
Check the fan interlock wiring at the feed center.
Check the wiring from the feed center panel to the solenoid valve
assembly in the feed center blow-down housing.
Fluidizing air regulator
defective
Check the fluidizing air regulator.
Continued...