Edit. 03 - 06/2019
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CH 200 AD
19
K
PROBLEMS AND SOLUTIONS
Solution
Cause
Problem
•
Electrical charges between the
spray gun nozzle and the object
to be painted
•
The machine does not start up
after the ON-OFF switch has been
pressed
•
The rack switches on but the Kv
display is not working
•
The kv display lights up but the kv
scale does not increase when the
potentiometer is turned
•
The machine is working but the
powder does not come out of
the spray gun when the trigger is
pressed.
•
Excessive voltage;
•
For CH 200 spray gun: excessive
electric current;
•
For CH 200 spray gun: nozzle dam-
aged;
•
The object to be painted is not prop-
erly electrically grounded;
•
For CH 200 spray gun the voltage
multiplier is defective;
•
No mains voltage;
•
Fuse 1A is defective;
•
Fuse 3.15A is defective;
•
Processing board defective;
•
KV control potentiometer defective,
processing board defective or display
board defective
•
No powder;
•
Powder delivery pump clogged;
•
The air pressure is not sufficient to
adjust powder delivery;
•
Fuse 2 A is defective;
•
Spray gun-generator cable incor-
rectly connected or damaged;
•
For CH 200 spray gun: decrease
the voltage using the rack's po-
tentiometer;
•
For spray gun: decrease the air
pressure;
•
Reset the current limiter switch
located on the processing board ;
•
Replace the nozzle;
•
With a tester or similar instrument
check the electrical grounding of
the piece holder hooks. If neces-
sary, clean the piece holder hooks;
•
Replace the voltage multiplier;
•
Check the electric supply line;
•
Replace the 1A fuse;
•
Replace the 3.15A fuse;
•
Replace the processing board;
•
Proceed as follows:
- Disconnect the power supply
- Remove the four fixing screws
and slip the rack off the CH
200-tribo machine's protective
cover.
- Remove the connector marked
j3 from the processing board.
- Using a tester (or similar instru-
ment capable of measuring
electrical resistance) check the
integrity of the potentiometer:
connect a tip of the tester to
the central terminal of the po-
tentiometer and the other tip to
one of the two side terminals.
Turning the potentiometer knob,
the resistance value read on the
tester varies from 0 to 1 K
Ω
, ap-
proximately.
- If a negative result is obtained,
replace the potentiometer.
•
Add powder;
•
Remove the powder delivery pump
and clean the passages;
•
Increase the air pressure to adjust
powder delivery;
•
Replace the 2 A fuse;
•
Check the connections; verify the
continuity of the cable connections
using a tester and, if necessary,
replace it;