Nordson HORIZON 200, Руководство по эксплуатации продукта

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Troubleshooting
6-3
Part 106913 − 04
E
2018 Nordson Corporation
Corrective Action Possible Cause Problem
Fan damper open too far, powder
being pulled away from
workpieces
Close damper to decrease air flow
through the booth. Refer to Fan
Damper Adjustment in the Operation
section.
Continued...
2. Problems with
coating uniformity
edge coverage, film
build, wrap, or,
penetration into
recesses
(contd)
Powder pump flow-rate and
atomizing air pressure incorrect
Refer to the spray gun and control
unit manuals for the recommended
air pressures and ratios.
Electrostatic voltage (kV) or AFC
setting incorrect for workpieces
being coated
Adjust the voltage to 90 − 100 kV for
large flat surfaces and 60 − 75 kV for
recesses. Never set the voltage
below 60 kV. Refer to the gun and
control unit manuals for the
recommended voltage, AFC, and air
pressure settings and ratios.
Wrong nozzles being used Use flat spray nozzles for large,
regular-shaped workpieces. Use
conical nozzles for deep recesses
and most manual touch-ups.
Powder feed problems Refer to problem 1.
3. Powder not
transferring from
color module to feed
hopper
Transfer pump air pressure too low Increase the air pressure.
Transfer pump venturi nozzle
clogged or throat worn
Clean the pump and replace worn
parts.
Transfer hose plugged Blow the powder out of the hose with
compressed air.
Sieve screens clogged, or motor
running in wrong direction
Clean the sieve screens. Refer to
the Reversing Motor
Direction procedure in this section.
Accumulator plugged Clean out the inlet ports. Clean the
accumulator interior.
Accumulator vent-assist air
pressure too high
Reduce the vent-assist air pressure.
Transfer pump delay too long,
level sensor sensitivity adjusted
incorrectly, or sensor failed
Decrease the transfer pump delay.
Calibrate the level sensor. Replace
the level sensor if the problem
continues.
Powder in color module not
fluidized. Deep hole in powder
around pickup tube
Increase the fluidizing pressure. If
the problem continues, go to the next
cause.
Powder damp or contaminated;
cannot be fluidized or pumped
Refer to problem 4.
Continued...