Elettro CF CU54H Manual De Instrucciones página 6

The tank inlet, which has a capacity of 5 litres, is located at the
front of the power source. Fill up to the maximum level and,
after the system is first turned on, top up to compensate for
the volume of liquid in the tubes.
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).
Note: When liquid is added to the tank or when water tubes
are connected or disconnected, it is important that the cooling
unit is always turned off.
To turn on the cooling unit, carefully read the instructions of
the power source supplying the unit.
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. When pressure
drop occurs, due to lack of liquid or pump blockage, the
pressure switch commands the power source to stop via the
connector (A). This anomaly is indicated by a warning on the
power source display. At the end of welding or cutting
operations, remember to turn off the power source, which will
also de-energise the cooling unit.
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.
4