Maintenance and care
General
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Item No.: 099-002032-EWM01
7
Maintenance and care
7.1
General
Under the indicated environmental conditions and normal operating conditions, this machine is largely
maintenance-free and requires minimum care. However, a number of points should be observed to
guarantee fault-free operation of your welding machine. Among these are regular cleaning and checking
as described below, depending on the level of contamination in the environment and the usage time of
the welding machine.
Cleaning, testing and repairing of the welding machines may only be carried out by competent,
capable personnel. A capable person is one who, due to training, knowledge and experience, is
able to recognise the dangers that can occur during testing of welding power sources as well as
possible subsequent damage and who is able to implement the required safety procedures.
In the event of failure to comply with any one of the following tests, the machine must not be
operated again until it has been repaired and a new test has been carried out.
7.2
Cleaning
Before cleaning, carefully disconnect the machine from the mains. PULL OUT THE MAINS PLUG.
(Switching off or pulling out the fuse does not provide adequate insulation protection)
Wait 2 minutes until the capacitors are discharged. Remove the casing cover.
The individual components should be handled as follows:
Power source: Depending on the amount of dust, blow out power source using oil- and moisture-free
compressed air.
Electronics: Do not blast electronic components or circuit boards with compressed air but instead use
suction from a vacuum cleaner for cleaning purposes.
7.3
Repetition test
The repetition test described below must be conducted correctly and on a regular basis in order
to claim under the EWM warranty.
The repetition test must be conducted in accordance with E VDE 0544-207 "Repetition test on arc
welding equipment", according to the German Ordinance on Operational Safety. This draft standard
covers all the required test points specifically for welding machines, as mentioned in VDE 0702
"Repetition test on electrical equipment", in addition to special instructions for usage and specific limit
values.
In addition to the regulations on the repetition test given here, the relevant local laws and
regulations must also be observed.
Unfortunately, many test devices are not suitable for VDE 0702 in all respects due to the special
conditions in inverter arc welding machines!
EWM as a manufacturer offers all appropriately trained and authorised EWM sales partners the
appropriate test equipment and measuring devices conforming to VDE 0404-2, which evaluate the
frequency response conforming to DIN EN 61010-1 Appendix A – Measuring Circuit A1. You as the user
are tasked with ensuring that your EWM machines conform to the standard E VDE 0544-207 and are
tested with the relevant test equipment and measuring devices given above.
The following description of the repetition test is only a brief overview of the points to be tested.
For details on the test points or in the event of any queries, please refer to E VDE 0544-207.
