Autowel DRAGON-350A, Руководство пользователя

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7. Trouble shootings
7. Trouble shootings 7. Trouble shootings
7. Trouble shootings
Step Phenomenon Reason Remedy
1
Power lamp is not
turned on when power
switch is ON.
Poor lamp Replace lamp
Poor contact of the 1st input part Contact test
Poor fuse Replace fuse
Poor NFB Replace NFB
2
Only FAN works. Poor torch switch Replace torch switch
Power lamp is on, but
fan does not work.
Poor fan motor Replace fan motor
3 Gas doesn' t come out.
No gas or no connection Check and replace
Poor solenoid valve Replace valve
Defect in control PCB Request A/ S
Poor torch switch Replace torch switch
4
Gas comes out
continuously.
Gas comes out even if power is off.
Remove foreign
material from valve
Poor solenoid valve Replace valve
Defect in control PCB Request A/ S
Poor torch switch Replace torch switch
5
Weld wire is not fed
even though inching
switch is pressed.
Poor motor fuse Replace fuse
Poor motor Replace motor
Poor PCB relay Replace relay
Wire is not fed when
torch switch is ON.
Poor torch switch Replace torch switch
Poor PCB Request A/ S
6
Voltage and current are
not adjustable.
Poor remote contact Check and replace
Poor control volume Replace
Poor PCB Request A/ S
7
Under no- load
condition, voltage meter
does not work and no
ARC.
Poor torch switch Replace torch switch
Poor PCB Request A/ S
Under no- load
condition, voltage meter
works but no arc. Broken torch cable Replace torch cable
Poor contact of earth able Check
8
Crater is not
controllable.
Poor control volume Replace
Poor PCB Request A/ S