Operation disturbances, 1 operation of the overload protection, 2 control fuses – Kemppi KMS 400 MVU User Manual

Page 11: 3 under- and overvoltages in the mains supply, 4 loss of a phase in the mains supply, Disposal of the machine

OperatiOn DisturbanCes

In the event of a failure of the machine, contact an authorised Kemppi service agent or your

local Kemppi dealer.
Check the maintenance objects before the machine is sent to the Service Workshop.

6.1 Operation of the overload protection

Yellow pilot lamp H12 of thermal protection is lit when thermostat has operated due to

overheating of machine.
The thermostat of machine will operate, if machine is continuously loaded over rated values or

cooling air circulation is blocked.
Cooling fan cools down the machine and when the pilot lamp is not lit the machine is

automatically ready for welding.

6.2 Control fuses

Fuse F11, 6,3 A delayed, on the rear wall of machine is as protection for connection of auxiliary

devices X14-15.

NOTE!

Use same type and rating of fuse which is marked beside the fuse adapter. Damage caused

by a wrong type fuse is not covered by the guarantee.

6.3 under- and overvoltages in the mains supply

Primary circuits of machine are protected against sudden, transient overvoltages.
Machine is designed to withstand 3 x 440 V voltage continuously (see technical data). See to

it that voltage is kept within admissible limits especially when mains supply is taken e.g. from

combustion engine generator.
If the mains has undervoltage (under approx. 300 V) or overvoltage (over approx. 480 V)

machine control stops to operate automatically.

6.4 loss of a phase in the mains supply

Loss of a phase causes noticeable poorer welding properties than normally or the machine

doesn’t get started at all. Loss of a phase can be due to following:

• blowing of mains supply fuse

• defective mains cable

• bad connection of mains connection cable on terminal block or plug of machine

DispOsal Of the maChine

Do not dispose of electrical equipment with normal waste!
In observance of European Directive 2002/96/EC on waste electrical and electronic

equipment, and its implementation in accordance with national law, electrical equipment

that has reached the end of its life must be collected separately and taken to an appropriate

environmentally responsible recycling facility.
The owner of the equipment is obliged to deliver a decommissioned unit to a regional

collection centre, per the instructions of local authorities or a Kemppi representative. By

applying this European Directive you will improve the environment and human health.