Astralpool 54068-MB Manual Tecnico página 28

ASTRALPOOLHEAT SERIES · AIR/WATER SYSTEM ASTRALPOOLHEAT SERIES · AIR/WATER SYSTEM
ASTRALPOOLHEAT SERIES · AIR/WATER SYSTEM ASTRALPOOLHEAT SERIES · AIR/WATER SYSTEM
After having discharged the cooling circuit, and after having installed the charger and connected
the flexible tubes of the gauge to the high and low-pressure circuits, we can proceed with the
charge:
Connect the main line of the gauge to the R-407C bottle stopcock.
•
Open the bottle stopcock and purge the section of tubing.
•
Open the high-pressure and the low-pressure valves.
•
Pressurise the equipment to equal the pressure of the bottle.
•
Close all gauge valves.
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Start the unit.
•
Open the low-pressure valve until the pressure is 1 bar above the trip point of the low-
•
pressure switch.
Once in a while, close the LO valve of the gauges in order to confirm the real pressure
•
of intake.
Verify that the outflow pressure is not above the normal range for normal working
•
conditions.
When the correct weight of refrigerant has been charged, close the LO valve.
•
When the equipment is functioning according to the specified working conditions, close
•
the valve of the charging bottle and disconnect the tubes taking precautions regarding
gas purge.
Place the caps on the supply and return lines of the compressor.
•
DETECTING LEAKS: DETECTING LEAKS:
DETECTING LEAKS: DETECTING LEAKS:
Symptoms of gas leaks.
Leaks will cause a decrease in the refrigerant charge in the equipment. Low refrigerant charge
may be the caused by the following symptoms:
The evaporating temperature is very low. This may be also caused by an obstructed
•
fluid line or the incorrect operation of the expansion valve.
The compressor is functioning on cycles which are too short.
•
Compressor is overheated: Gas leaks cause gas flow to be insufficient to cool the
•
compressor. This may cause the tripping of the internal thermostat of the compressor.
The compressor operates continuously, there is not enough refrigerant to obtain the
•
desired power, and since the specified temperatures are never reached, the unit never
shuts down.
In any case, it is better not to wait until a leak appears and service regularly the circuit.
METHODS FOR SEARCHING FOR A GAS LEAK: METHODS FOR SEARCHING FOR A GAS LEAK:
METHODS FOR SEARCHING FOR A GAS LEAK: METHODS FOR SEARCHING FOR A GAS LEAK:
There are various tools on the market used in order to detect leaks, although not all of them are
sufficiently sensitive to certain types of refrigerants. It is very important to choose an adequate
detector for the refrigerant used for this equipment and that the maintenance guidelines by
followed.
You can also use soap bubbles (liquid detergent in a spray bottle) to detect leaks.
Other methods such as halogen lighters and additives may also be used to detect leaks.
THE R- - - - 407C GAS: THE R 407C GAS:
THE R THE R 407C GAS: 407C GAS:
The R-407C is a NONFLAMMABLE gas; it has no flash point, and so is not subjected to the rules
and regulations of the transportation of inflammable gases.
The R-407C does not irritate the skin, eyes or mucous membranes and does not produce any
side-effects.
It has a very low level of toxicity for one or many repeated exposures; it does not cause cancer
or mutations.
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