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Operating Manual E4-2800/4200/5200 / M4-3000/4000/5500
04/2014
3
MAINTENANCE
Warning!
Dangers of electricity!
Before any work is carried out inside the power source, the machine must
be switched off and the mains plug disconnected.
After disconnecting the mains plug, wait at least three minutes, until the
capacitors have discharged and reached safe values!
Regular maintenance of the machine is essential for safe and trouble free operation.
Maintenance of wearing parts in short regular intervals:
•
The life of gas nozzles and current tips, which are subject to wear, can be extended
considerably when they are sprayed from time to time with torch spray, which allows
easier removal of spatter or prevents their adhesion altogether.
•
The current tips must be cleaned with a cleaning drill after welding one wire coil
(15 kg).
•
The liners must be cleaned after welding 50 – 100 kg wire, depending on the wire
size. To do this, they are pulled out of the outer hose. Then, outer hose and liners
are blown out with dry and clean compressed air.
Daily Checks:
•
Check the machine for abnormal vibration, humming noise and smell.
•
Check connecting sockets, cables, hoses and torch for abnormal heating, insulation
faults and cleanness.
•
Check the wire drive unit. Welding wire abrasion must be removed by using dry
compressed air, which also prevents premature wear.
•
The mechanical drive parts must be cleaned at regular intervals.
Tests to ensure electrical safety:
The rule EN 60974-4 „Periodic inspection and testing of arc welding equipment“ specifies test
methods for the inspection during operation.
Caution: Tests must only be carried out by an expert in the field of electrical repair, preferably
also familiar with welding and allied processes.