Prodigy HDLV Generation II Pump, Pump Manifold, and Circuit Board
31
Part 1081195-11
E
2018
Nordson Corporation
Corrective Action
Possible Cause
Problem
9. Powder delivery
problems: Surging,
fading, intermittent
flow, low flow
Assist air compensation incorrect
Increase or decrease the assist air
compensation setting for the current
preset.
Set the controller to a positive
number if the spray gun is surging.
Set the controller to a negative
number if the spray gun is fading.
Fluidizing air pressure incorrect
Increase or decrease the fluidizing air
pressure. The powder should be
gently boiling.
Powder damp or contaminated
Check the air driers and
filter/separators. Check the powder in
the feed hoppers and make sure it
flows easily.
Suction tubing too long
Move the hoppers closer to the pump
and shorten the suction tube length.
The tube length must be less than
12 ft. from the powder feed.
Suction or delivery tubing blocked
or kinked
Check the tubing. Blow out the tubing
or replace it as necessary.
Pump panel regulator pressure
incorrect
Adjust the regulators in the pump
panel to the proper pressures. Refer
to page 22 for the proper pressure
settings.
Pump adapter 8-mm tube fitting
loose
Tighten the 8-mm tube fitting.
Pump mount O-rings worn
Replace the pump mount O-rings.
Refer to your pickup tube instruction
sheet or hopper manual for part
numbers.
Pickup tube not tightly threaded
into pump mount
Tighten the pickup tube into the
pump mount.
Air leaking around lock knob
Replace the lock knob O-ring.
Pump inlet tube retaining nut or
O-ring loose
Check the O-ring and tighten the
retaining nut.
Check the barbed tubing adapter for
wear.
Check for air leaks between the
manifold and cabinet and between
the manifold and pump.
Improper delivery tubing
arrangement
The delivery tubing must be arranged
in a 3-ft. coil and be parallel to the
ground.
Delivery tubing length is not to
specification
The delivery tubing must be 60 ft.
from the pump to the spray gun.
Continued...
