Tweco 400i Transmig - Manual (Page 51)

TRANSMIG 400 i
6-11 July 18, 2008
6.08 Power Source Problems
1 The welding arc cannot be
established
A The Primary supply voltage
has not been switched ON
A Switch ON the Primary
supply voltage
B The Welding Power Source
switch is switched OFF
B Switch ON the Welding
Power Source
C Loose connections
internally
C Have an Accredited
Cigweld Service Provider
repair the connection
2 Maximum output welding
current cannot be achieved
with nominal Mains supply
voltage
Defective control circuit Have an Accredited
Cigweld Service Provider
inspect then repair the
welder
3 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
Possible Cause Description Remedy