Saf-Fro DIGIPULS III 420, Instruction For Operation And Maintenance

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EN
DIGISTEEL III / DIGIPULS III 420-520 15
6 - MAINTENANCE
6.1. GENERAL
Twice a year, depending on the use of the device, inspect the following:

cleanliness of the pwer source

electrical and gas connections
WARNING :
Never carry out cleaning or repair work inside the device before making sure that the unit has been completely disconnected from
the mains.
Dismantle the generator panels and use suction to remove dust and metal particles accumulated between the magnetic circuits
and the windings of the transformer.
Work must be performed using a plastic tip to avoid damage to the insultation of the windings.
At each start-up of the welding unit and prior to calling customer cupport for technical servicing, please check that:

Power terminals are not improperly tightened.

The selected mains voltage is correct.

There is proper gas flow.

Type and diameter of the wire.Torch condition.
TWICE PER YEAR

Perform calibration of the current and voltage settings.

Check electrical connections of the power, control and power supply circuits.

Check the condition of insulation, cables, connections and pipes.
6.2. ROLLERS AND WIRE GUIDE
Under normal conditions of use, these accessories have a long serviceable life before their replacement becomes necessary. Sometimes, however,
after being used over a period of time, excessive wear or clogging due to adhering deposits may be noted.
To minimise such harmful effects, make sure the wire feeder plate remains clean. The motor reduction unit requires no maintenance
6.3. TORCH
Regularly check the proper tightness of the connections of the welding current supply. Mechanical stresses related to thermal shocks tend to loosen
some parts of the torch, particularly:

The contact tube

The coaxial cable

The welding nozzle

The quick connector
Check that the gasket of the gas inlet spigot is in good condition. Remove the spatter between the contact tube and the nozzle and between the nozzle
and the skirt. Spatter is easier to remove if the procedure is repeated at short intervals.
Do not use hard tools that may scratch the surface of these parts and cause spatter to become attached to it..

SPRAYMIG SIB, W000011093

SPRAYMIG H20, W000010001
Blow out the liner after each change of a spool of wire. Carry out this procedure from the side of the quick fitting connector plug of the torch.
If necessary, replace the wire inlet guide of the torch.
Severe wear of the wire guide may cause gas leaks towards the rear of the torch.
The contact tubes are designed for long use. Nevertheless, the passage of wire causes them to wear off, widening the bore more than the permissible
tolerances for good contact between the tube and the wire.