HD Manual Arc Welders
©2000 CIGWELD All rights reserved
30
FAULT
CAUSE
REMEDY
6 Portions of the weld
run do not fuse to the
surface of the metal or
edge of the joint.
A
B
Small electrodes used on heavy
cold plate.
Welding current is too low.
A
B
Use larger electrodes and pre-heat
the plate.
Increase welding current
C Wrong electrode angle.
C Adjust angle so the welding arc is
directed more into the base metal
D Travel speed of electrode is too
high.
D Reduce travel speed of electrode
E Scale or dirt on joint surface.
E Clean surface before welding.
Figure 31 - Example of lack of fusion
14.2 Welding Power Source Problems
FAULT
CAUSE
REMEDY
1 The welding arc cannot
be establish.
A
B
The Mains supply voltage has not
been switched ON.
The Welding Power Source switch
is switched OFF.
A
B
Switch ON the Mains supply
voltage.
Switch ON the Welding Power
Source.
C Loose primary connection to the
electrode selection switch.
C Have an Accredited CIGWELD
Service Agent repair the connection.
D The transformer secondary have
poor electrical connections.
D Have an Accredited CIGWELD
Service Agent repair the
transformer.
2 Maximum
output
welding current can not
be achieved with 415V
Mains supply voltage.
The shunt and/or lead screw
surfaces have accumulated dust and
dirt.
Clean off the accumulated dust and
dirt from the shunt and/or lead screw
surfaces.
3 The
Mains
supply
voltage has been
switched ON but the
FAN does not operate.
The fan has failed or it has a poor
electrical connection.
Have an Accredited CIGWELD
Service Agent repair or replace the
fan.
6 Welding
current
reduces when welding
Poor work lead connection to the
work piece.
Ensure that the work lead has a
positive electrical connection to the
work piece.
14.3 Key Spare Parts
WARNING 7
CIGWELD advises that any electrical component should be fitted by a qualified electrical tradesperson.
