Kemppi KMS 400 MVU [12/16] Operation disturbances 7

Do not use pressure washing device.•

Only authorised electrician shall carry out repairs to the machines.•

REGULAR MAINTENANCE6.3

Kemppi Service Workshops make regular maintenance according to agreement.

The major points in the maintenance procedure are listed as follows:

Cleaning of the machine•

Checking and maintenance of the welding tools•

Checking of connectors, switches and potentiometers•

Checking of electric connections•

Checking of mains cable and plug•

Damaged parts or parts in bad connection are replaced by new ones•

Maintenance testing. Operation and performance values of the machine are checked, •

and adjusted when necessary by means of test equipment.

OPERATION DISTURBANCES7.

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.

OPERATION OF THE OVERLOAD PROTECTION7.1

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.

CONTROL FUSES7.2

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.

UNDER AND OVERVOLTAGES IN THE MAINS SUPPLY7.3

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.

LOSS OF A PHASE IN THE MAINS SUPPLY7.4

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•