ESAB LHF 405 PIPEWELD, Руководство по обслуживанию

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Edition 071024
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c. load the welding power source to achieve approximately:
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36V (LHF 405 PIPEWELD) or
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44V (LHF 615 PIPEWELD),
d. by means of the potentiometer R6 on LH20/1 board set the output current equal to:
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400A@36V (LHF 405 PIPEWELD) or
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610A@44V (LHF 615 PIPEWELD),
e. check the setting of the following values of the output current:
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10A@22V; 100A@24V; 200A@28V; 400A@36V (LHF 405 PIPEWELD) or
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10A@22V; 200A@28V; 400A@36V; 610A@44V (LHF 615 PIPEWELD).
8. HOT START checking.
a. set 100A output current by means of the setting knob,
b. connect instantly the 0,24 Ω load. Observe the output current. It should amount to
130A for 1s. Then it should fall down within another 0,2 s to 100A. Measurements
should be carried out by means of the oscilloscope with memory,
c. disconnect the load.
9. ARC FORCE checking.
a. set 100A output current with the setting knob,
b. set the ARC FORCE knob to minimum,
c. gradually load the power source untill output voltage is about 13V; the actual
output current should be 100--103A,
d. set the ARC FORCE knob to maximum, load the power source to achieve 24V
voltage on output,
e. gradually increase the load, following the voltage; starting from the threshold of
18,5V -- actual output current should increase; at the 13V on the output, the actual
output current should be 185A.
10. ANTISTICK checking.
a. set the ARC FORCE knob to minimum,
b. set 100A output current by means of the setting knob in MMA mode,
c. gradually increase the load, following the voltage; after achieving 5V the actual
output current should be reduced to the level < 32A after 2s delay.
11. Checking of the wired remote control unit.
a. connect cable of remote controller to the socket X02,
b. set switch S3 to “EXT1” and S1 to “AAG” or “MMA”,
c. check if setting of current value within full range is possible both for unloaded and
for loaded source.
12. Checking of the wireless remote control unit (rcu).
a. set switch S3 to “EXT2” and S1 to “AAG” or “MMA”,
b. with use of wireless rcu check the transmission for both polarisations and for
following current values: min, 100A, 200A, 300A, max. Observe current value
changes on machine display.
NOTE: In TIG mode (switch S1 set to “TIG”) wireless remote control is not operational.
13. Checking of machine operation in TIG mode.