Kemppi MLS 3000 ACDC VRD - Manual (Page 9)

EN
2.8 welDing CaBle COnneCTiOns
The welding cables must be made of at least 25 mm² copper cable.
2.8.1 Choosing welding polarity in MMa welding
You can select the polarity electronically from the control panel, i.e. you do not have to switch
the places of the (+) and (-) connectors.
NOTE! Connect always the negative connector to the work piece.
2.8.2 earthing
If possible, always fasten the earth clamp of return current cable directly onto work piece.
1. Clean contact surface of earth clamp from paint and rust.
2. Fasten clamp properly, so that contact surface is as large as possible.
3. Check that clamp is fastened firmly.
2.9 COOling uniT TO MasTerCOOl 30
NOTE! Cooling liquid is injurious! Avoid also contact with skin or eyes. In case of injury, seek for
medical advice.
Cooling unit Mastercool 30 together with TIG torch Kemppi TTC-W range enables TIG welding
with water-cooled torch.
The cooling unit is installed beneath the power source with screws. Electrical connections are
on the bottom of power source. Fill the reservoir with a 20 – 40 % mixture of glycol and water,
or with any other suitable antifreeze. The capacity of the reservoir is 3 litres.
Mastercool 30
7
M
ast
er
Tig MLS 3000, 3003 A
CDC / © Kemppi O
y / 1112