3. Check the Electric Heating kit:
Close the Electric Heating circuit breaker, manually start the Electric Heating device, check the Electric Heating
running current, and close the Electric Heating device after the operations are done.
4. Check the air-cooled condenser:
Check if the condenser is installed correctly, including whether the wiring is correct, whether the fan is reliably fixed,
and whether the fan blades scratch the fan frame, and whether the alien objects near the condenser have been
cleared away.
Run the fan to check if the fan rotates normally and check the input voltage.
5. Charge refrigerant and startup:
The air-cooled unit needs to be charged with refrigerant on site, charge the suitable amount of liquid refrigerants
according to the indications on the label;
After charging the refrigerants, do not turn on the compressor and charge the refrigerant dynamically until the crank
case heating device has been pre-heated for longer than 12h. For dynamic filling of the refrigerants, the charging
speed should not be high in order to avoid the compressor damage;
There is a standard charging amount for each air cooled unit according to the different connecting conditions, so be
sure to refer to the calculated charging amount to avoid over charge.
Manually set the 75% output for the fan, start the compressor after 5min -> adjust the compressor output -> slowly
charge the refrigerant to the location indicated by the label on the low-pressure side.
In the meantime, check the operating current and voltage of the condenser.
Requirements: When the compressor runs at 100%, ensure the 25-40℃ discharge superheat, and there should be no
bubbles in the sight glass, and the reference condensate depression is 3-5 pressure is 8-10kg, discharge pressure is
21-23kg, and the superheat is more than 12℃. For the low temperature liquid storage system, be sure to operate
according to relevant instruction files.
1. The unit should first be dynamically charged from the needle valve. If some units cannot be charged
during the later charging stage, it can be charged from the suction port, but monitor the charging speed.
The unit uses the high-pressure chamber compressor that can be easily damaged if the charging is
made through the suction port;
2. Charge the unit respectively at 50%, 70% and 100% compressor outputs until there is no bubble;
3. The unit may be stopped due to “low superheat” if the charging speed is high and the superheat is below 10
℃
(auto reset after 3min), and after the alarm reset, manually start the compressor;
4. In manual control mode, the pump will not be opened automatically, so for the unit with pump, open the pump
according to the condensation conditions.
Record the running parameters of the cooling system according to the requirements of CR012 Air Cooled Air
Conditioner Startup and Commissioning Report.
Record the parameters Operating Instructions
1. Start the manual mode
Start up from the panel – Enter level 2 password – Set the system – Manual Mode – Manual Mode Enabled – Set to
“Y”
2. Start vacuum mode
Enable Manual Mode－Vacuum mode－Set to “Y”
1) Close the transformer circuit breaker;
2) Ignore the “Fan/Power Failure” alarm after startup;
3) If the vacuuming starts before the vacuuming mode is started, “low pressure sensor fault” alarm will occur after
startup, and then ignore this alarm.
3. Manually start / stop each component
Enable Manual Mode－Start / stop the output of corresponding component－The output percentage value of the
compressor and fan can be adjusted after they are started up
1) Output percentage value of the compressor cannot be adjusted until the compressor has started up for about
5min (i.e., the soft start is over);
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