Mains Connection; Distribution Network; Welding Cable Connections; Cooling Unit To Mastercool 20 - Kemppi MLS 2300 ACDC Operating Manual

2.6

Mains COnneCTiOn

Only an authorised electrician is allowed to install mains cable and plug!
NOTE!
The machine comes equipped with a three-metre power cord with a Schuko plug. Only an
authorised electrician is allowed to replace the plug. The fuse and cable sizes are given in the
Technical data at the end of this manual.
This equipment's electromagnetic compatibility (EMC) is designed for use in an industrial
NOTE!
environment. Class A equipment is not intended for use in residential location where the electrical
power is provided by the public low-voltage supply system.
2.7

disTribuTiOn neTwOrk

All regular electrical devices without special circuits generate harmonic currents into
distribution network. High rates of harmonic current may cause losses and disturbance to
some equipment. Equipment complying with IEC 61000-3-12.
2.8

welding Cable COnneCTiOns

The welding cables must be made of at least 16 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. 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.
EN
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 20

Cooling liquid is injurious! Avoid also contact with skin or eyes. In case of injury, seek for
NOTE!
medical advice.
Cooling unit Mastercool 20 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 20
6