Encore 1102771A Customer Product Manual page 48

4-6
Troubleshooting
Problem
3. Loss of wrap, poor
transfer efficiency
4. No kV output from the
spray gun (display p y g ( p y
shows 0 kV when gun h 0 kV h
triggered), but powder
is spraying
5. Powder build up on
the electrode tip
6. No kV output from the
spray gun (display
shows voltage or A shows voltage or A
output), but powder is
spraying
7. No kV output and no
powder output
Part 1102771A
Possible Cause
NOTE: Before checking possible causes, check the help code on the
controller and perform the corrective actions recommended in this section.
Low electrostatic voltage
Poor electrode connection
Poorly grounded parts
NOTE: Before checking possible causes, check the help code on the
controller and perform the corrective actions recommended in this section.
Damaged gun cable
Spray gun power supply shorted
Insufficient electrode air wash flow
NOTE: Before checking possible causes, check the help code on the
controller and perform the corrective actions recommended in this section.
Spray gun power supply open
Damaged gun cable
Malfunctioning trigger switch,
display module, or cable
Corrective Action
Increase the electrostatic voltage.
Remove the nozzle and electrode
assembly. Clean the electrode and
check for carbon tracking or damage.
Check the electrode resistance as
shown on page 4-10. If the electrode
assembly is good, remove the gun
power supply and check its
resistance as shown on page 4-10.
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.
Perform the Gun Cable Continuity
Checks on page 4-11.
If an open or short is found, replace
the cable.
Perform the Power Supply
Resistance Test on page 4-10.
Adjust the electrode air wash needle
valve at the power unit to increase
the electrode air wash flow.
Perform the Power Supply
Resistance Test on page 4-10.
Perform the Gun Cable Continuity
Test on page 4-11.
If an open or short is found, replace
the cable.
Check "Gun Triggered On" icon at
top center of controller interface. If
icon is not lit, check for H36 help
code. Check trigger switch
connections to display module,
replace switch if necessary.
Perform the Gun Cable Continuity
Test on page 4-11.
NOTE: It may be possible to use the
settings trigger as the main trigger
until repairs are made. Set Function
F08 to F08--05. Refer to page 3-17.
E 2010 Nordson Corporation
Continued...