Nordson Encore XL Powder, Manual

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© 2021 Nordson Corporation
1607027-01
7-3 Troubleshooting
Problem Possible Cause Corrective Action
4. Powder in feed
hopper not
fluidizing, or clouds
of powder erupting
from surface
Fluidizing air pressure
too low or too high
Increase the fluidizing air pressure until the powder is gently
boiling. Decrease the pressure if clouds of powder are erupting
from the surface.
Moist or oil-contaminated
powder
Check the air supply for water or oil. Check the filters, separators,
and air dryer. Replace the powder in the feed source if it is
contaminated. Refer to the next possible cause.
Fluidizing plate gasket
leaking, or fluidizing
plate plugged, cracked,
or installed incorrectly
Check for air leaks around the fluidizing plate gasket. If leaks are
found, replace the gasket.
Inspect the fluidizing plate for stains, discoloration, polished
surfaces, or cracks. Replace it if contaminated, plugged, or
damaged. The plate should be installed with the smooth surface
up (in contact with the powder).
Incorrect ratio of
reclaimed to virgin
powder
Increase or decrease the transfer rate. The powder supply
should be no more than three parts reclaim to one part virgin
powder.
Uneven distribution of
powder in feed source
Check the powder and the fluidizing plate for contamination as
previously described.
5. Powder in box not
fluidizing, or clouds
of powder erupting
from surface
Lance fluidizing air
pressure too low or too
high
Increase the lance fluidizing air pressure until the powder is
gently boiling. Decrease the pressure if clouds of powder are
erupting from the surface.
Moist or oil-contaminated
powder
Check the air supply for water or oil. Check the filters, separators,
and air dryer. Replace the box if the powder is contaminated.
Refer to the next possible cause.
Fluidizing bar assembly
leaking or damaged
Raise the lance assembly and check the fluidizing bars.
Vibratory table motor
defective
Check the vibrator motor. Refer to Problem 6 for motor
troubleshooting procedures.
6. Sieve or vibratory
table turned ON, but
no vibration
E−Stop button pressed Reset the E-Stop button.
Exhaust fan not running Start the exhaust fan.
Sieve switch or wiring
defective
Check the switch and wiring. Replace the switch or repair the
wiring as needed.
Sieve motor overload
Overload occurs when motor operates at higher amperage than
designed for.
Make sure nothing is preventing motor vibration.
Check the motor and electrical connections.
Check the motor internal weights for proper adjustment.
Make sure the overload protector is set to the proper limit.
Reset the overload.
Sieve motor failed Replace the sieve motor.
Continued...