16
7. MAINTENANCE
CAUTION: Before performing any inspection and maintenance unplug
the power cord from the mains.
7.1. ONGOING MAINTENANCE
1) Check the condition of the power cord and insulation of welding cables.
Any damages should be fixed immediately.
2) Ensure that welding cables connections, the electric clamp and isolated
jaws of the welding holder are operational. Any worn or damaged parts
should be replaced.
7.2. PERIODIC MAINTENANCE
Depending on the operating conditions of rectifier but not less frequently than
once every three months, proceed with the following:
1) remove any dust from the internal and external parts using a soft brush
and a vacuum cleaner or compressed air under pressure of ca. 3bar.
2) check the condition and electrical connections, including cables
connected to the protective terminal. All connections should be correct.
3) check if all bolts are firmly tightened.
8. REPAIRS
Any repairs may be performed ONLY by persons authorized and trained by
the manufacturer.
9. DANGERS DURING WELDING
Prior to welding, authorized persons should thoroughly read this manual and
strictly observe all given instructions.
Non-compliance with these instructions may result in, among others,
following dangerous consequences.
9.1. FIRE, EXPLOSION
Observe fire regulations in force at the welding stand. Remove any
flammable materials in the vicinity of the welding stand. Prepare the
appropriate fire-fighting equipment. Keep in mind that due to sparks and
welding arc high temperature, there is a fire hazard even after a certain
period after welding is completed. Be especially careful when welding tanks
used to store flammable or combustible materials. If improperly cleaned
before welding, may result in explosion.
Argon used for TIG welding is an inert gas and it can remove oxygen from the
atmosphere resulting in suffocation.
Often inspect gas cylinder, pressure regulator and gas hose. All joints should
be tight. Do not connect the gas cylinder directly to the gas hose without a
