Sinclair SCV-50EA Service Manual page 49

Prohibition
1. The refrigerant circuit must not be filled with a refrigerant other than that indicated of specification.
2. The use of a different refrigerant may cause serious damage to the compressor.
3. Oxygen, acetylene or other inflammable or poisonous gases must never be used in the refrigerant circuit
as they may cause explosion or poisoning.
4. Oils other than those indicated on manual before must not be used. The use of different oils may cause
serious damage to the compressor.
d) Shutting down for long periods
If it is previewed not to use the machine for long periods
After deactivating the chiller:
-Make sure the model is in the power off model "
supply.
-Make sure the remote control switch is closed (if present) .
-Close the water valves.
Important
If there is a possibility that the outside temperature may drop below zero, there is the risk of freezing.
The water circuit MUST BE EMPTIED AND SHUT OFF POWER (when draining after heat pump operation
take care as the water may be hot) or antifreeze must be added in the proportion recommended by the
manufacturer.
", or alternatively disconnect the unit from the power
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