The Pointing Out Of Any Difficulties And Their Elimination; Maintenance; Ordering Spare Parts; Procedure Of Checking Process Of Inverter Weld - Kuhtreiber 150 / TIG LA Bedienungsanweisung

The pointing out of any difficulties
and their elimination
The supply line is attributed with the cause of the
most common difficulties. In the case of breakdown,
proceed as follows:

Check the value of the supply voltage.

Check that the power cable is perfectly connec-
ted to the plug and the supply switch.

Check that the power fuses are not burned out or
loose.
Check whether the following are defective:

The switch that supplies the machine.

The plug socket in the wall.

The generator switch.
NOTE: Given the required technical skills necessary
for the repair of the generator, in case of breakdown
we advise you to contact skilled personnel or our
technical service department.

Maintenance

WARNING: Before carrying out any inspection of the
inside of the generator, disconnect the system from
the supply.
In planning of maintenance procedures, the level and
circumstances of the apparatus usage must be taken
into account. Careful handling and preventive main-
tenance helps to avoid unnecessary failures and de-
fects.
If required by the apparatus working conditions, the
inspection and maintenance intervals must be
shortened. If the apparatus is used in a very dusty
environment (conduction dust), then such intervals
will be as short as twice a month.
REGULAR MAINTENANCE AND INSPECTIONS
Conduct the inspections according to the relevant
Czech Standard (EN 60974-4). Before any use of the
apparatus, check the conditions of the welding and
power supply cables. Do not use damaged cables!
Visual inspections include:

Torch, welding current return clamp

Power supply network

Welding circuit

Covers

Controlling and indicating elements

Apparatus condition in general
EVERY HALF A YEAR
Remove the plug from the socket outlet and wait for
two minutes (to allow for discharging of capacitors
inside the apparatus). Then remove the cover of the
apparatus. Clean all internal power supply connec-
tions from dust and dirt. Where they are loose,
tighten them.
Clean all internal parts of the apparatus from dust and
dirt using a soft brush of vacuum cleaner.
NOTE: Be careful when using compressed air in order
to not demage any parts.
Never use any solvents or diluents (such as acetone,
etc.); plastic material and front panel lettering could
be damaged in such procedures.
Only sufficiently qualified technicians (electrical
engineers) may repair the apparatus.
PROCEDURE FOR WELDER ASSEMBLY AND DIS-
ASSEMBLY
Proceed as follows:

Unscrew the 2 screws holding the cover.

Proceed the other way round to reassemble the
welder.
SPARE PARTS
Original spare parts have been specially designed for
our equipment. The use of non-original spare parts
may cause variations in performance or reduce the
foreseen level of safety. Producer declines all
responsibility for the use of non-original spare parts.

Ordering spare parts

For easy ordering of spare parts includes the follow-ing:

The order number of the part.

The name of the part.

The type of the machine or welding torch.

Supply voltage and frequency from the rating
plate.

Serial number of the machine.
EXAMPLE: 2 pcs., code 30451 fan SUNON for machi-
ne 150 TIG LA, 1x230 V 50/60Hz, serial number ...
Procedure of checking process of
inverter welding machine
To carry out the checking it is necessary to use sui-
table measuring instrument for measuring checks, for
example REVEX 51 (2051). Machine MEGMET must
not be used, in other case there is a risk of des-
tructtion of the machine.
1. Switch on the main switch on the machine.
2. Plug supply terminating unit into the measuring
instrument.
3. Set the measuring instrument according to the
guidelines for measuring of contact resistance.
4. By the help of a probe measure contact resistan-
ce on parts connected to the ground, for examp-
le cover screw. Contact resistance must be lower
than 0.1 Ohm.
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