ITW Gema PG 1-R1, Operating Instructions And Spare Parts List

Page: 15 / 20

11 PG 1-R1
Issued 05/01
Troubleshooting Guide
(Bold numbers in the text refer to Figure 5.)
Causes
In the gun:
– Gun cable defective
– High-voltage part defective
– O-ring ( 21 ) defect or miss-
ing
- Injector, check valve or throt-
tling at injector, powder hose
or gun clogged
- Insert sleeve in injector is
worn
No conveying air:
- Reducing valve defective
- Solenoid valve defective
- Electronics board (PCB)
defective
- High-Voltage too low
- Gun connector, gun cable
or gun cable connector is
defect
- High-Voltage cascade is
defect
- Electronics board (PCB)
defect
- Workpiece not properly
grounded
Faults
High-voltage display does not
show any value even though
the Control module is switched
on.
During the spraying process
air escapes from the gun shaft
Gun does not spray powder
although the Control module
is switched on
Gun sprays powder, LED at
the rear of the cascade is
not lit, powder does not ad-
here to the workpiece
Gun sprays powder, High-
Voltage present, powder
does not adhere to the
workpiece
Remedies
Replace or mail in for repair
Mail in the gun for possible
repair
Replace or insert
Clean corresponding part
Replace
Replace
Replace
Mail in for repair
Increase the High-voltage on
the control module
Replace defect item or mail
it in for repair
Mail in the shaft of the
gun for repair
Mail in for repair
Check the ground connec-
tion, also refer to "Safety
regulations"