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Before startarting the vacuum procedure it is necessary to open by hand the high pressure valve (HPV), see
section 11 above. Also you can refer to P&ID attached in this maunal. For this operation the magnetic tool shown
below needs to be used.
CAREL Product Reference & name: EEVMAG000 – Valve actuator
The operator can stop the vacuum procedure when the standing vacuum pressure (SVP) reaches 0.5 Torr.
13.4 Charging R efrigerant into the System
Initial charging should only be completed once the system has been proven to be leak free and after proper
vacuum. The charging point is located on the liquid line adjacent to the drier assembly. Liquid or gas should not be
added through the low pressure side of the system. Break vaccum with ONLY CO2 vapour (vapour off take
cylinder) up to 8 to 10 bar pressure. By using vapour CO2 up to that pressure you can avoid any dry-ice formation.
Make sure that compressor is off during this operation.
Maximum amount of refrigerant can be found in section 16.
Copyright HPL March 2021
P4114S Rev 03
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