Routine Service And Calibration Requirements - Thermal Arc Fabricator 211i Operating Manual

FABRICATOR 211i
8 Gas flow continues after
the trigger switch has been
released (MIG mode).
9 Power indicator will not
illuminate and welding arc
cannot be established.
10 TIG electrode melts when
arc is struck.
11 Arc flutters during TIG
welding.

5.02 Routine Service and Calibration Requirements

There are extremely dangerous voltage and power levels present inside this Inverter Power Source.
Do not attempt to open or repair unless you are an accredited Thermal Arc Service Provider. Discon-
nect the Welding Power Source from the Mains Supply Voltage before disassembling.
Routine Inspection, Testing & Maintenance
The inspection and testing of the power source and associated accessories shall be carried out by a licensed
electrician. This includes an insulation resistance test and an earthing test to ensure the integrity of the unit
is compliant with Thermal Arc's original specifications.
A. Testing Schedule
1. For transportable equipment, at least once every 3 months; and
2. For fixed equipment, at least once every 12 months.
The owners of the equipment shall keep a suitable record of the periodic tests and a system of tagging,
including the date of the most recent inspection.
A transportable power source is deemed to be any equipment that is not permanently connected and fixed
in the position in which it is operated.
Please refer to local guidelines for further information.
B. Insulation Resistance
Minimum insulation resistance for in-service Thermal Arc Inverter Power Sources shall be measured at
a voltage of 500V between the parts referred to in Table 5-2 below. Power sources that do not meet the
insulation resistance requirements set out below shall be withdrawn from service and not returned until
repairs have been performed such that the requirements outlined below are met.
PROBLEMS AND ROUTINE SERVICE
Gas valve has jammed open
due to impurities in the gas
or the gas line.
The mains supply voltage
has exceeded voltage limits
of the power source.
TIG torch is connected to
the (+) VE terminal.
Tungsten electrode is too
large for the welding cur-
rent.
Table 5-1: Power Source Problems
WARNING
NOTE
5-2
PROBLEMS/SERVICE
Have an accredited Thermal
Arc service provider repair or
replace gas valve.
Ensure that the mains supply
voltage is within 230VAC ± 15%.
Connect the TIG torch to the (-)
VE terminal.
Select the correct size of tung-
sten electrode. Refer to Table
4-6.
Manual 0-5225