Elettro CF CU06H Manual De Instrucciones página 5

3 INSTALLATION
3.1 Setting up
Place the apparatus according to the instructions given in the
manual of the machine with which it is to be used. Take care
not to obstruct the flow of air through the cooling slots.
3.2 Installation
The unit must be installed by qualified personnel. All
connections effected must comply with the current standards
and with the law on safety at work.
Before connecting up the mains lead, ensure that the hoses
are already connected, the power supply voltage corresponds
to that indicated on the technical data plate, and the earth plug
is efficient.
The cooling unit is supplied without coolant.
To fill the tank, unscrew the cap (B) and pour in approximately
5 litres of coolant.
Connect the welding torch and all of the connecting hoses, set
the switch (A) to the ON position so that the coolant begins to
circulate, than top up the tank to the "max." level. It is
important to keep the tank filled to the "max." level during use.
This ensures improved performance.
You should therefore regularly check the level through slot (C).
The coolant should be of the type used for cooling circuits in
the automobile sector. This is obtained by mixing water
(preferably deionized) with a glycol-based antifreeze, in
quantities which depend on the ambient conditions.
To facilitate this operation, follow these indications:
- 20% antifreeze when the ambient temperature is -9°C,
- 30% antifreeze when the ambient temperature is -17°C,
- 40% antifreeze when the ambient temperature is -25°C.
Important: This mixture not only maintains the fluidity of the
coolant at extremely low temperatures, but also prevents the
formation of chalky deposits from hard water which would
compromise the life of the system, in particular of the pump.
For this reason, you are advised to use antifreeze even during
the summer.
Warning! Prolonged dry operation of the pump may
compromise its functionality and life.
To protect the torch, a pressure switch which controls delivery
pressure has been fitted at the pump output. If the pressure
drops due to the absence of coolant or a blockage in the
pump, the pressure switch (through connector E) causes the
generator to stop. This fault is often indicated by a special light
located on the generator.
Remember to switch off the apparatus when you have finished
welding or cutting.
4 MAINTENANCE
Disconnect the mains lead before any internal inspection of
the unit. Regularly remove any dust and extraneous materials
from the inside of the unit, and in particular the radiator. Check
that all of the hose tightening clips are closed, that the fittings
are in perfect condition, and the coolant is at the correct level.
4.1 Procedures to follow when repairs have been made
After making repairs, ensure that the wiring is arranged in
such a way as to guarantee the insulation of parts connected
to the supply circuit from those connected to the low tension
circuit. Make sure that the wires cannot come into contact with
moving parts, or any parts which heat up during operation.
Replace all clips, as on the original machine, so that if a lead
accidentally breaks or is disconnected, a contact between the
supply circuit and the low tension circuits is impossible.
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