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16 | AQ450736920607en-000201
© Danfoss | Climate Solutions | 2023.07
6.2 Work to be carried out
6
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Maintenance
Oil change:
In principle, an oil change is not a mandatory requirement, if the equipment is correctly
manufactured and properly operated. Based on decades of experience, we recommend however that
the following oil change/service work is carried out:
• Initial oil change during the first maintenance of the vehicle (at the latest after one year)
• Then after every 5,000 operating hours, at the latest however after 3 years. Also clean the oil filter.
• An oil change is also necessary, if the oil is very cloudy and dark, or after repairs have been carried
out on the compressor.
Emptying the shaft seal oil reservoir:
As required depending on use, but at the latest after 1 year
or approx. 1,400 operating hours
Where requirements are higher during use
(frequent operation at the limits of application, or
in hotlands with over +40 °C ambient temperature, or in the case of deep freezing), the following
requirements must be observed:
• Initial oil change during the first maintenance of the vehicle (at the latest after one year)
• Then an oil change after every 2,000 operating hours, at the latest however after two years. Also
clean the oil filter.
Preventive maintenance
The above requirements for higher use applications also apply in the case of preventive
maintenance. The shaft seal must also be changed after 3 years.
Regular inspections (at least annually):
Checks to be carried out on oil level in the oil sight
glass, oil fill level of the shaft seal in the oil drain hose, absence of leaks in the compressor, running
noise, vibrations, pressures, temperatures, and functioning of auxiliary devices such as the capacity
control.
Since changing the shaft seal involves encroaching into the
refrigerant circuit, this is only recommended, if the seal is
losing refrigerant, or if oil is escaping in excess of the per-
missible amount (see information on page 14, chapter 5.7,
"Shaft seal"). Changing the shaft seal is described in the rel
-
evant spare part kit.
Emptying the oil reservoir:
The oil reservoir can be emptied
very simple without having to dismantle the coupling and/or
belt drive. It is recommended that this is done at the same
time as the air-conditioning maintenance and motor service.
To proceed, detach the oil hose from the bracket, remove the
sealing plug and drain the oil into a collecting vessel. After
emptying, reseal the oil hose and clamp it into the bracket.
Dispose of the used oil in accordance with national
regulations.
6.3 Shaft seal, emptying the oil reservoir
Fig. 15
