Maintenance, Care And Disposal; General; Cleaning; Dirt Filter - EWM Pico 350 cel puls pws Operating Instructions Manual

6

Maintenance, care and disposal

6.1

General

Risk of injury due to electrical voltage after switching off!
Working on an open machine can lead to fatal injuries!
Capacitors are loaded with electrical voltage during operation. Voltage remains present
for up to four minutes after the mains plug is removed.
1. Switch off machine.
2. Remove the mains plug.
3. Wait for at last 4 minutes until the capacitors have discharged!
Incorrect maintenance, testing and repair!
Maintenance, testing and repair of the machine may only be carried out by skilled and
qualified personnel. A qualified person is one who, because of his or her training, know-
ledge and experience, is able to recognise the dangers that can occur while testing
welding power sources as well as possible subsequent damage, and who is able to im-
plement the required safety procedures.
Observe the maintenance instructions > see 6.2 chapter.
• In the event that the provisions of one of the below-stated tests are not met, the machine
must not be operated again until it has been repaired and a new test has been carried out!
Repair and maintenance work may only be performed by qualified authorised personnel; otherwise the
right to claim under warranty is void. In all service matters, always consult the dealer who supplied the
machine. Return deliveries of defective equipment subject to warranty may only be made through your
dealer. When replacing parts, use only original spare parts. When ordering spare parts, please quote the
machine type, serial number and item number of the machine, as well as the type designation and item
number of the spare part.
Under the specified ambient conditions and normal working conditions this machine is essentially mainte-
nance-free and requires just a minimum of care.
Contamination of the machine may impair service life and duty cycle. The cleaning intervals depend on
the ambient conditions and the resulting contamination of the machine. The minimum interval is every six
months.
6.1.1

Cleaning

• Clean the outer surfaces with a moist cloth (no aggressive cleaning agents).
• Purge the machine venting channel and cooling fins (if present) with oil- and water-free compressed
air. Compressed air may overspeed and destroy the machine fans. Never direct the compressed air
directly at the machine fans. Mechanically block the fans, if required.
• Check the coolant for contaminants and replace, if necessary.
6.1.2

Dirt filter

The duty cycle of the welding machine decreases as an effect of the reduced cooling air volume. The dirt
filter must be remove at regular intervals and cleaned by blowing out with compressed air (depending on
the level of soiling).
099-002061-EW501
05.05.2020
Maintenance, care and disposal
DANGER
WARNING
General
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