Crossfire HD-350, Руководство оператора

Страница: 14 / 21

Page 12
7. Trouble Shooting
7.1 Tro u b l e S ho o ti ng (See Table 6)
Table 6
No. Breakdown Analy sis Solutions
Input fuse break down Change fuse
Power isn’t connected Check and turn on power
Torch switch break down Change torch switch
1
Wire won't feed
when press torch
switch
Multi-cored cable failure (Separate type) Close controlling cable
Multi-cored cable failure (Separate type) Close controlling cable
Current adjust potentiometer on wire feeding
device break down
Change potentiometer
Wire feeder cable break down Close wire feeder power
2
Have OCV and
gas but no wire
feeding function
PCB break down Change PCB
Control PCB failure Change control PCB
3
Have wire feeding
and gas sending
function but no
OCV
Controlling coil of AC contactor has no power Connect coil with power supply
Current adjust potentiometer break down Change potentiometer
4
Welding current
maladjustment
PCB has problem Change PCB
Voltage is too low, less than 517V Increase power supply
Power lack phase Connect 3 phase power
5
Low OCV
Main circuit diode break down lead to lacking phase
Change main circuit diode
Incorrect welding norm selected, current doesn’t
match with voltage
Adjust welding norm
Contact tip or wire feeding roller doesn’t match
with wire type
Change contact tip or roller
Wire feeding resistance is too large Clean or replace the liner and the torch
cable had better in the line direction.
Power lack phase Connect 3 phase power
6
Arc is not stable
and splash is
large
Main circuit diode break down lead to lacking phase
Change main circuit diode
Earth cable break Connect earth cable
7
OCV and wire
feeding are normal
but can not
generate arc
Work piece has much greasy dirty or rusty stain Clean greasy dirty or rusty stain
Gas hose break Connect gas system and bind firmly
Gas hose is pressed or blocked up Check gas system
8
No shielded gas
Solenoid break down Repair or change electromagnetic valve
Contact tip stick with wire Change the nozzle 9
Wire is bent or
even buckling at
the part of roller
and inlet of wire
guide pipe
The inlet of liner is far away from roller of wire
feeding, guide is not good.
Shorten the distance