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12. Replacement of parts
Filter
Low pressure valve
Electronic expansion valve
Suction valve
High pressure valve
Manometer
IMPORTANT WARNING:
The components of the heat pump can only be replaced and repaired by a specialized company or an
authorized service centre.
Do not attempt to remove any defects yourself. There is a risk of electrical accident or other hazards.
The device and its components are under constant pressure.
INSTRUCTIONS FOR REPLACEMENT:
1. It is necessary to remove all the coolant from the heat pump unit before replacing/changing the
manometer, filter, high/low pressure valve, suction valve and the electronic expansion valve.
2. The replacement can only be carried out when the internal pressure of the system equals the normal
atmospheric pressure.
3. After the filter, high/low pressure valve, suction valve or the electronic expansion valve has been
replaced/changed, silver-solder the connection.
4. Test the gas for leakage under high pressure. (For testing purposes, it is recommended to fill the heat
pump unit with the N2 gas.)
5. After the high-pressure test has been completed, suck the gas out of the heat pump unit.
6. Then refill it with the coolant in the volume as indicated in the unit specifications.
7. Use the detector to recheck the gas for leakage.
8. Complete the replacement and then check the operating data by starting up the unit.
EN
