TROUBLESHOOTING FOR PRO COOLING UNIT
TROUBLESHOOTING CHART
TROUBLE
CAUSE
REMEDY
Welding is interrupted.
Supply voltage 220 V is dis-
connected during welding.
Check supply voltage cable
and tighten wires from con-
nection terminal
Check supply voltage 220V
from connector X1/1 - X1/3
on PCB A001.
MIG/TIG welding can not be
started.
Supply voltage 220 V is dis-
connected when welding is
not going on.
Check supply voltage cable
and tighten wires from con-
nection terminal
Check supply voltage 220V
from connector X1/1 - X1/3
on PCB A001.
Signal lamp H2 is flashing
when there is normal pause
in liquid circulation.
Pressure guard is broke or
there is pressure in system.
See check point picture,
check point 3.
Check funktion of the
pressure guard from
connector X2/1 - X2/2 on
PCB A001 with multimeter
that S003 is not broken;
enough pressuer 0V and low
pressure 5V.
PRCOOL don´t work at all.
Burned fuse F1 on PCB
A001.
Check/change fuse F1
(630 mA).
CONTROL CONNECTOR AND CABLE
PCB A001 CONNECTOR X3
CONTROL CABLE X003
1
. Data, serial
A
. GND
2
. +50 VDC
B
. Data, serial
3
. GND
C
. +50 VDC
1 2 3
A
B
C
D
E
F
