The Oil Charge; Oil Charging Procedure; Figure 9 - Charging Oil Reservoir With Oil - York R-134a Operation And Maintenance Manual

SECTION 4 - OPERATIONAL MAINTENANCE

THE OIL CHARGE

The nominal oil charge for Q3-Q7 compressors is 11
gallons, P7-H9 compressors is 17.5 gallons, K1-K4
compressors is 20 gallons, and K7 compressors is 24
gallons.
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.

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 compressor oil reservoir. The oil should be charged
into the oil reservoir using the YORK Oil Charging
Pump – YORK P/N 470-10654-000. 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 charg-
ing pump in a clean container of new oil and con-
nect the pump discharge connection to the oil
OIL CHARGING VALVE

FIGURE 9 - CHARGING OIL RESERVOIR WITH OIL

20
charging valve (A) located on the remote oil res-
ervoir cover plate. (See Figure 9) 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 fills 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, close the
power supply to the starter to energize the oil
heater. This will keep the concentration of refrig-
erant 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.
LD08648
FORM 160.76-O1
ISSUE DATE: 05/22/2019
OIL
CHARGING
PUMP
LD08579
JOHNSON CONTROLS