Service And Maintenance; General Recommendations; Service And Safety Advice - Danfoss Optyma OP-UPAC015COP04E Application Manuallines

Application Guidelines

6.1 General recommendations

Even if main switch of condensing unit is in position OFF power still available at income terminals of main switch.
In case of any service related to electrical components inside condensing unit it is recommended to disconnect condensing unit from the
power by switch located before condensing unit.
It is recommend to check the unit for leakages minimum once a year and in accordance with national requirements.
Furthermore following should be checked:
1. Electrical and refrigerant connections for damages, corrosion etc.
2. The mounting devices (bolts, nuts, etc) of the unit.
3. Vibrations: if it is on the same level as after installation or any signs of abnormal vibration.
4. Operation conditions.
5. Airflow across the condenser.
6. Oil level.
7. Tightness of electrical connections.
8. Operation of the crankcase and oil separator heaters.
Compressor must always be warmer than any other component in the circuit, even if the circuit is switched off for seasonal stop.

6.2 Service and safety advice

If the refrigerant system has been opened the system has to be flushed with dry air or nitrogen to remove moisture and a new filter
dryer has to be installed. If evacuation of refrigerant has to be done, it shall be done in such a way that no refrigerant can escape to the
environment. Beware of hot and cold components in the refrigeration system. The components in the refrigeration system are pressurized;
as a consequence special attention has to be paid during operation on these components.
Do not operate condensing unit without refrigerant charge or without being connected to the system.
Safety goggles, gloves, protective clothing, safety boots, hard hats or another safety equipment should be worn when necessary.
Never install a system in the field and leave it unattended when it has no charge, a holding charge, or with the service valves closed without
electrically locking out the system.
Do not touch the compressor until it has cooled down. Ensure that other materials in the area of the compressor do not get in touch with it.
Before Starting Repair Work
- Disconnect from mains
- Wait as stated before for discharge of the DC-link.
- Remove compressor cable.
© Danfoss | Climate Solutions | 2023.02

6. Service and maintenance

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