JOHNSON CONTROLS
64
FORM 160.67-O2
ISSUE DATE: 10/9/2020
SECTION 4 - OPERATIONAL MAINTENANCE
THE COMPRESSOR OIL CHARGE
The nominal oil charge for all YST compressors is 20
gallon, type “York K”.
New YORK Refrigeration oil must be used in the cen-
trifugal compressor. Since oil absorbs moisture when
exposed to the atmosphere, it should be kept tightly
capped until used.
COMPRESSOR OIL CHARGING PROCEDURE
During operation the compressor oil level must be
maintained in the "Operating Range" identified on the
vertical oil level indicator. If the oil level falls into the
lower sight glass, it is necessary to add oil to the com-
pressor oil reservoir. The oil should be charged into
the oil reservoir using the YORK Oil Charging Pump
– YORK Part No. 070-10654. To charge oil into the oil
reservoir, proceed as follows:
1. The unit must be shut down.
2. Immerse the suction connection of the oil charging
pump in a clean container of new oil and connect
the pump discharge connection to the oil charg-
ing valve (A) located on the remote oil reservoir
cover plate. Do not tighten the connection at the
charging valve until after the air is forced out
by pumping a few strokes of the oil pump. This
lls the lines with oil and prevents air from being
pumped into the system.
3. Open the oil charging valve and pump oil into the
system until oil level in the compressor oil reser-
voir is in the “Over Full” region of the oil level
indicator label. Close the charging valve and dis-
connect the hand oil pump.
4. As soon as oil charging is complete, ensure that
the power is available to the control center and
power panel to energize the oil heater. This will
keep the concentration of refrigerant in the oil to
a minimum.
When the oil reservoir is initially charged with oil, the
oil pump should be started manually to fill the lines,
passages, oil cooler and oil filter. This will lower the oil
level in the reservoir. It may then be necessary to add
oil to bring the level back into the “Operating Range”
of the oil level indicator label.
FIGURE 15 - CHARGING OIL RESERVOIR WITH OIL
LD08579
LD08648
OIL CHARGING VALVE
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