Kemppi MasterTig MLS 4000 User Manual download pdf (Page 8)

2.8 Welding cable connections

2.8.1 Choosing welding polarity in MMA welding

You can change the welding polarity by choosing (+) or (-) cable connector.

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 rmly.

2.9 Cooling unit to MasterCool 10

NOTE! Cooling liquid is injurious! Avoid also contact with skin or eyes. In case of injury, seek for

medical advice.

Cooling unit MasterCool 10 together with TIG torch of Kemppi’s 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 etanol and water,

or with any other suitable antifreeze. The capacity of the reservoir is 3 litres.

MasterCool 10:

Mastertig MLS 3000

Mastertig MLS 4000

Installation of cooling unit

Master, MasterTig, MasterCool 10

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Kemppi MasterTig MLS 4000 User Manual Page 8