Vacuuming And Charging; Overall Checking; Standard Operating Conditions; Troubleshooting - Acson IM-VCUA-0304- Manual Del Usuario

Vacuuming is necessary to eliminate all moisture and air from the system.
Vacuuming
Before vacuuming, perform leak check for refrigeration
circuit. After the system piping are properly connected,
connect the flexible hoses to the correct charging nipples.
Ensure that flexible hose from charging nipples are connected
to the vacuum pump via standard servicing valves and
pressure gauges (gauge manifold). Vacuum the air
conditioner system to at least 500 microns Hg. Do not start
the unit when the system is engaged in vacuuming.
•
Ensure that:-
1) The unit has been mounted solidly and rigid in position.
2) Piping and connections are leak proof after charging.
3) Proper wiring has been installed.
•
Drainage check – pour some water into the unit through the top panel.
•
Test run:
1) Conduct a test run after water drainage test and gas leakage test.
2) Check the following items:-
a. Is the electric plug firmly inserted into the socket?
b. Is there any abnormal sound from the unit?
c. Is there any abnormal vibration on the unit itself or piping?
d. Is the drainage of water smooth?
•
Confirm that:
1) Condenser fan is running, with warm air blowing off the condensing unit.
2) Evaporator blower is running and discharge cool air.
3) The remote control incorporates a 3 minutes delay in the circuit. Thus, it requires about 3 minutes before the
outdoor condensing unit can start up.
Cooling Unit
Temperature
Minimum indoor temperature
Maximum indoor temperature
Minimum outdoor temperature
Maximum outdoor temperature
! WARNING
If any malfunction of the air conditioner unit is noted, immediately switch off the power supply to the unit. Check
the following fault conditions and causes for some simple troubleshooting tips.
Fault
1. The compressor does not start after 3
minutes from starting the air conditioner unit.
2. The air conditioner unit does not operate.
If the fault persists, please call your local dealer / serviceman.

VACUUMING AND CHARGING

OVERALL CHECKING

STANDARD OPERATING CONDITIONS

•
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.

TROUBLESHOOTING

Causes / Action
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1-6
Charging
Before charging, the vacuum must be held at 500 microns
Hg for at least 15 minutes, then break vacuum by charging
R-22 refrigerant. Operate the unit for 15 minutes and ensure
the refrigerant charges is of correct by monitoring running
current, gas and liquid line pressures. Suction and discharge
pipe pressure should be in the region of 75 psig and 275 psig
generally.
After ensuring the system is correctly charged, remove
flexible hose from charging nipples caps.
Ts °C / °F
19.4 / 66.9
26.7 / 80.1
19.4 / 66.9
46 / 114.8
Ts: Dry bulb temperature.
Protection against frequent starting. Wait for 3 to 4 minutes
for the compressor to start operating.
Power failure, or the fuse need to be replaced.
The power plug is disconnected.
It is possible that your delay timer has been set incorrectly.
If the fault persist after all these verifications, please
contact the air conditioner unit installer.
Th °C / °F
13.9 / 57.0
19.4 / 66.9
13.9 / 57.0
24 / 75.2
Th: Wet bulb temperature.