Table of Contents
Advertisement
Expressweld MasterMIG 250CT
17 Maintenance and Repair
Warning!
Proper usage and performing periodical maintenance fully will enable high
performance and important for long economical life. Maintenance, repair and service
works should only performed by the qualified personnel who had the required
training!
Mains current of the welding machine should be disconnected and power cable
should be unplugged while performing maintenance and service.
DAILY MAINTENANCE
-
Follow general personal safety and fire safety rules related to the welding
procedures.
-
Clean metal splashings from gas nozzle. These may cause weakness in shielding
gas flow that covers molten welding metal.
-
Clean the gas nozzle at the end of welding torch against splashing with GMAW
spray. For this procedure you can use our "Focusweld" welding spray. Never attempt
to clean accumulated burrs by hitting the end of torch to a hard surface.
-
If you notice any wear and crush on welding wire, check if the press force of wire
drive reels is suitable for the wire diameter and if you notice over pressure, decrease
the press force setting as appropriate.
-
If wire drive reels are worn or damaged, you cannot achieve a smooth wire feed.
Frequently check the reels and if there is any wear replace with the new ones.
-
Before installing a new welding wire reel, remove the gas nozzle and contact nozzle
and clean the spiral with compressed air. This procedure will prevent the sticking of
the wire.
-
Check the welding torch and clean if necessary.
-
Make sure that the welding current adjusting knob located in front panel and On/Off
switch located in rear panel are in place and properly operating. If current adjusting
knob is not installed properly and if On/Off switch is not exactly in place and is not
operating smoothly, contact with the service.
-
Check if there is vibration, whistle or abnormal smell after starting the machine. If
there is any problem try to find the source of the problem, if there is a problem due to
environment eliminate this factor, if the problem source is the machine do not
interfere and contact with the service after disconnecting from the mains.
-
Make sure that the welding current is compatible with set current value. If there is
any difference, perform the necessary adjustment since it will affect the welding
operation.
Page 29
Advertisement
Table of Contents
