TROUBLE SHOOTING.
TROUBLE CAUSE
REMEDY
Mains supply is
switched ON and ON-
OFF switch is put to
ON position but welder
does not come ON.
i) Three phase supply is not
proper
ii) Mains Switch is not proper.
iii) Control fuse is blown off
i)Wait till the three phase
power is available
ii) Check for the proper
electrical contacts in the
mains switch.
iii) Replace the control fuse.
(This fuse is mounted on
the control transformer.
Equipment comes on
but the welding current
varies.
i)The mains connection is not
proper.(Loose connection)
ii) Current regulator is not
working properly. (Either the
carbon brush is weared out
OR it is not making the proper
contact.
i)
Check the mains for
proper and firm
connection.
ii) Replace the carbon
brush.
The equipment comes
ON but the control
fuse blows.
i) Control Transformer
Damaged
ii) Fan
Damaged
iii) Current Regulator
Damaged
iv) Control Rectifier
Damage
i) Check & Replace
ii) Check & Replace
iii) Check & Replace
iv) Check & Replace
Welding arc is
sluggish.
i) Welding current is low.
ii) Loose connection
iii) Input supply is less.
I) Increase the current.
ii) Make firm connection.
iii) Check the input
Supply.
and use proper tapping
(380/415/440) by changing
the jumper on the main
transformer
