SAF PRESTOPAC 160, Руководство пользователя

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E - RICERCA GUASTI
FAULT-FINDING PROCEDURE
10 to 12V = (ARC or
TIG)
Voltage > standby
voltage
Primary module
Secondary module
Control board
Primary module
+ 15V between 10 & 11
on B5
— 15V between 9 & 10
on B5
Contact your dealer
Same steps as for nul
voltage (see above)
Contact your dealer
In TIG position
Trigger = 1
Pregas No gas Fuse defective
Connections defective
Solenoid valve defective
Regulation system
Check fuse
Disconnect the set, shunt
trigger terminals and
check continuity R=0
between 5 and 6 on B3.
Trigger = 1
Check for 220V at
solenoid valve terminals.
Trigger = 1
Check electrical
continuity between 5 and
6 of B4.
Starting / welding Starting impossible or
current not adjustable Faulty connections
Control board
Potentiometer
Primary module
With electrode/
workpiece short-
circuited, reading should
be : Iw =8 to 10A
If Iw =0, check control
board
If Iw
≥
10A, check control
board
Measure :
+ 15V between 10 & 11
on B5
— 15V between 9 & 10
on B5
Check the potentiometer
wiring and condition
Contact your dealer
Selector
Sloping down No sloping down ARC/TIG selector
Regulation board
Switch off set.
Selector in position
Check on an ohmmeter
R=0 between 6 and 7 of
B5
Measure:
PRESTOPAC
160 A
E
-26