Acson international C Serie Manuel D'installation page 18

• Manifold Gauge will show cylinder pressure rather than suction pressure if the cylinder valve and Manifold
valve "A" are both open.
A
2. Charging procedures – Three phase compressors
The fundamental procedure is the same as for single phase models but the compressor can run in the wrong direction on
starting. If this happens reverse any two phases and start again. Short term reverse rotation will not damage the compressor.
All Specter compressors (Model: ZR90 to ZR19M) have internal discharge temperature protectors which are very effective
in preventing dangerously high discharge temperatures during charging. The protection module will trip and lock the
compressor out for 30 minutes. It is not normally necessary to wait 30 minutes for the module to reset. When the compressor
has cooled down the module can be reset by breaking the power supply to the control circuit. Very often the serviceman
does not understand why the module tripped and uses a jumper wire to bypass it. He continues to charge the system and
removes the jumper when charging is complete. The compressor may or may not run with the protector back in the circuit
but it is certain that the compressor has been damaged and premature failure is inevitable.
Ensure the following, in particular:-
1) The unit is mounted solidly and rigid in position.
2) Piping and connections are leak proof after charging.
3) Proper wiring has been done.
Drainage check:- Pour some water into left side of drain
pan (drainage are in right side of unit).
• Test run:
1) Conduct a test run after water drainage test and gas
leakage test.
Cooling Only Unit
Ts °C / °F
Temperature
Minimum indoor
19.4 / 66.9
temperature
Maximum indoor
26.7 / 80.1
temperature
Minimum outdoor
19.4 / 66.9
temperature
Maximum outdoor
46 / 114.8
temperature
Ts: Dry bulb temperature. Th: Wet bulb temperature.
• Disconnect from the main power supply before servicing the air conditioner unit.
• DO NOT pull out the power cord when the power is ON. This may cause serious electrical shocks which may
result in fire hazards.
All manuals and user guides at all-guides.com
!
Caution
There are many ways of charging liquid in a "controlled manner" into the suction
side:-
1. Use valve A on the manifold gauge set
2. Use the valve on the refrigerant cylinder
3. Charge through a Shredder valve
4. Use a hose with a Shredder valve depressor
5. Charge into the suction side at some distance from the compressor
6. All of the above
OVERALL CHECKING
2) Watch out for the following:-
• Check that:
1) Condenser fan is running, with warm air blowing off the
2) Evaporator blower is running and discharge cool air.
3) The remote controller incorporates a 3 minute delay in
STANDARD OPERATING CONDITION
Heat Pump Unit
Th °C / °F
13.9 / 57.0
19.4 / 66.9
13.9 / 57.0
Maximum outdoor
24 / 75.2
! Warning
1-12
a) Is the electric plug firmly inserted into the socket?
b) Is there any abnormal sound from unit?
c) Is there smooth drainage of water?
condensing unit.
the circuit. Thus, it requires about 3 minutes before the
outdoor condensing unit can start up.
Ts °C / °F
Temperature
Minimum indoor
10 / 50
temperature
Maximum indoor
26.7 / 80.1
temperature
Minimum outdoor
-8 / 17.6
temperature
24 / 75.2
temperature
Th °C / °F
-
-
-9 / 15.8
18 / 64.4