Lincoln Electric OERLIKON CITOSTEEL 255C Operator's Manual page 40

Figure 70.
Gas Connection
A gas cylinder must be installed with a proper flow
regulator. Once a gas cylinder with a flow regulator has
been securely installed, connect the gas hose from the
regulator to the machine
WARNING
The welding machine supports all suitable shielding
gases including carbon dioxide, argon and helium at a
maximum pressure of 5,0 bars.
WARNING
Always fasten gas cylinder properly in vertical position in
a special holder on the wall or on a carriage. Remember
to close gas cylinder valve after having finished welding.
WARNING
Gas cylinder can be fasten on the machine's shelf, but
the height of gas cylinder doesn't have to be higher than
43in/1,1m. The gas cylinder which is fastened on the
machine's shelf has to be secured by attaching it to the
machine using the chain.
WARNING
Always fasten gas cylinder properly in vertical position in
a special holder on the wall or on a carriage. Remember
to close gas cylinder valve after having finished welding.
WARNING
Gas cylinder can be fasten on the machine's shelf, but
the height of gas cylinder doesn't have to be higher than
43in/1,1m. The gas cylinder which is fastened on the
machine's shelf has to be secured by attaching it to the
machine using the chain.
English
gas inlet connector.
Maintenance
For any repair operations, modifications or maintenance,
it is recommended to contact the nearest Technical
Service Center or Lincoln Electric. Repairs and
modifications performed by unauthorized service or
personnel will cause the manufacturer's warranty to
become null and void.
Any noticeable damage should be reported immediately
and repaired.
Routine maintenance (everyday)

Check condition of insulation and connections of the
work leads and insulation of power lead. If any
insulation damage
immediately.

Remove the spatters from the welding gun nozzle.
Spatters could interfere with the shielding gas flow to
the arc.

Check the welding gun condition: replace it, if
necessary.

Check condition and operation of the cooling fan.
Keep clean its airflow slots.
Periodic maintenance (every 200 working hours
but at least once a year)
Perform the routine maintenance and, in addition:

Keep the machine clean. Using a dry (and low
pressure) airflow, remove the dust from the external
case and from the cabinet inside.

If it is required, clean and tighten all weld terminals.
The frequency of the maintenance operations may vary
in accordance with the working environment where the
machine is placed.
Do not touch electrically live parts.
Before the case of machine will be removed, the
machine has to be turned off and the power lead has to
be disconnected from mains socket.
Mains supply network must be disconnected from the
machine before each maintenance and service. After
each repair, perform proper tests to ensure safety.
36
WARNING
exists replace the
WARNING
WARNING
WARNING
English
lead