Nordson Encore LT, Руководство по эксплуатации продукта

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Troubleshooting
5-3
Part 1604857-04
E 2014 Nordson Corporation
Corrective Action Possible Cause Problem
3. Loss of wrap, poor
transfer efficiency
Low electrostatic voltage Increase the electrostatic voltage.
Poor electrode connection Remove the nozzle and electrode
assembly. Clean the electrode and
check for carbon tracking or damage.
Check the electrode resistance as
shown on page 5-6. If the electrode
assembly is good, remove the gun
power supply and check its
resistance as shown on page 5-6.
Poorly grounded parts Check the conveyor chain, rollers,
and part hangers for powder buildup.
The resistance between the parts
and ground must be 1 megohm or
less. For best results, 500 ohms or
less is recommended.
4. No kV output from the
spray gun (kV=0),
powder is spraying
Damaged gun cable Perform the Gun Cable Continuity
Checks on page 5-7.
If an open or short is found, replace
the cable.
Spray gun power supply shorted Perform the Power Supply
Resistance Test on page 5-6.
5. No kV output from the
spray gun (
m
A=0),
powder is spraying
Spray gun power supply open Perform the Power Supply
Resistance Test on page 5-6.
Damaged gun cable Perform the Gun Cable Continuity
Test on page 5-7.
If an open or short is found, replace
the cable.
6. No kV output and no
powder output
Malfunctioning trigger switch or
cable
Check the trigger LED on the
controller interface. If the LED is not
lit, check the switch connection to the
gun cable.
Perform the
Gun Cable Continuity
Test on page 5-7. If the cable and
connections are good, replace the
switch.
Controller configured for automatic
operation
Cycle controller power. If A appears
on the kV/uA display, remove the
main control board and move the JP1
jumper to the Manual position.
7. Powder build up on
the electrode tip
Insufficient electrode air wash flow
due to low input pressure or
blockage in manifold orifice
Check input air pressure. Remove
electrode air wash connector and
check manifold orifice for blockage.
Orifice size is .25 − .3 mm. Clean with
an appropriate tool.
Continued...