Running and Maintenance MCAC-TSM-2008-02
78 Installation
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.
7.4 Shutting down for long periods
If it is previewed not to use the machine for long periods
After deactivating the chiller:
- Make sure the remote switch SA 2 is in the "Standby" position, or alternatively disconnect the unit from the
power supply.
- Make sure the remote keyboard (if present) or the ST542 is set to “OFF”.
- Position QF and QS on OFF
- Deactivate the indoor terminal units by placing the switch of each unit in the “OFF” position.
- 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.
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