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Function tests
Under normal circumstances, function tests are only mandatory following repair work.
However, we recommend that the following function tests are carried out on a regular
basis to ensure that the welding system is safe and working properly at all times.
General
- Mains switch - check the switch is fully operational by turning the mains switch on
and off
- Fan - the fan must start up when the power source is switched off
Mains power on/
off equipment
Check that indicators and controls work in line with the operating instructionsIndicators and
controls
- The correct operation of the gas solenoid valve must be tested by activating the
torch trigger several times
- To check the gas solenoid valve and the gas pipes for leaks, the gas pipe to the
gas solenoid valve must be subjected to pressure -> Turn off the gas feed at the
gas cylinder and observe any fall in pressure with a pressure gauge over a period
of 2 minutes - there must be no noticeable fall in pressure on the gauge.
Gas solenoid
valve
A test weld should be carried out after performing the safety inspection.Test weld
- Set up the welding system in an
insulated condition
- Connect a power source (10-25 A)
between the housing earth conductor
of the housing lid and the PE conduc-
tor on the mains terminal
- Switch on the welding system
- Switch on the power source
- The error „Err | PE“ must appear on
the power source
IMPORTANT! The apparatus tester may
perform the power source role by using
the „Ground conductor resistance 10 A“
function.
Earth current
watchdog
1 Power source
2 Test piece
9 Instrument lead
12
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