RLC-SVX02G-E4
72
Maintenance Procedures
If oil was removed to service a
compressor or change the filter
follow this procedure:
1. If the compressor is a new
compressor or has been removed
from the system and reworked,
add 0.95 liter (0.90 kg) of oil to the
motor cavity prior to installing the
compressor into the chiller.
2. Install the compressor in the
system. Make sure that the filter
shutoff valve is closed. Other
compressor isolation valves may
also be closed depending upon
the service that was completed.
For example, changing the oil
filter would require the
compressor to be isolated and
pulled into vacuum.
Note: Ensure that the compressor
is not pressurized.
3. Open the flare fitting on the oil-
line shutoff valve.
4. Open the flare fitting on the filter
housing. This is the port that must
be used to put oil into the
compressor.
5. Install one end of the charging
hose on the oil charging port
(with the Schrader valve) and the
other on the oil canister.
6. Lift the oil canister, or use a
pump, to pour oil into the filter
housing.
7. When oil comes out of the flare
fitting on the oil-line shutoff valve,
the filter is full. Stop adding oil.
8. Put the cap on the flare on the oil-
line shutoff valve, remove the
charging hose, and put the cap
back on the flare on the filter
housing.
9. Vacuum the compressor (low
side) and prepare it for inclusion
in the system. There is a service
valve on the suction line and on
the evaporator. Use these valves
to vacuum the compressor.
10. Open the oil-line shutoff valve.
Severe damage to the
compressor can result if the oil-
line shutoff valve is closed when
the compressor is started.
Catastrophic damage to the
compressor will occur if the oil-line
shutoff valve or the isolation valves
are left closed on unit startup.
11. Open the other compressor
isolation valves.
Note: this procedure assumes that
the oil that is put into the filter
housing does not have
contaminants such as non-
condensable gases. The oil forces
these gases out of the filter and oil-
line shutoff valve, without the need
to pull a vacuum on this small
volume. If the oil has been in an
open container or is otherwise
contaminated, then this small
volume must be subject to vacuum
as well. However, the filter cavity is
full of oil. Therefore, be sure to use
a flash tank in line with the vacuum
pump to ensure that the oil that is
pulled out of the filter cavity does
not slug the vacuum pump.
To Next Page
Loading...
Need help?
General