Astral Pool BDP Series, Руководство пользователя

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BDP SERIES
Performance loss Expansive valve blocked Clean or replace expansive
valve
Environmental temperature
too cold. Control thermostat contacts
locked in closed position. Repair or replace the cold
control thermostat.
Excessive superheat. Too high pressure drop in the
evaporator Check that the external
equalizer is not obstructed.
J) CHANGE SUMMER OR WINTER MODE OR VICEVERSA
TROUBLE DETECTED PROBABLE CAUSES SOLUTIONS
Inverse valve does not act Solenoid valves don’t act Check valve and relay
2.2.5. - REGULATION ELEMENTS
High Pressure switch controls condenser performance. A poor performance resulting from
condensation pressures too high, it is usually caused by:
- Dirty condenser.
- Reduced air flow.
Low Pressure switch monitors the pressure at which the refrigerant evaporates in the
evaporator tubes. A low evaporation pressure is usually caused by:
- Lack of refrigerant.
- Thermostatic expansion valve faulty.
- Filter Drier obstructed.
-Compressor discharge system inoperative (Power reduction).
Cold water thermostat regulates the temperature of cold water to the evaporator inlet. The
most common causes of water temperature in this area are:
- Reduced water flow.
- Thermostat regulating at very low temperatures.
The oil pressure switch detects the difference between back pressure pump compressor oil
(semi-hermetic compressors), and the prevailing pressure in the compressor crankcase. This difference
is the net pressure of the oil or the oil pressure chamber. Weak oil effective pressure is usually the
result of:
- Lack of oil.
- Faulty oil pump.
- Reheating defective crankcase, causing condensation of the coolant in the crankcase bottom.
- Thermostatic expansion valve incorrectly set.