The oil charge
The nominal oil charge for Q3-Q8 compressors is 11 gal, P7-H9 compressors is 17.5 gal, K1-K4
compressors is 20 gal, and K7 compressors is 24 gal.
New YORK refrigeration oil must be used in the centrifugal compressor. Since oil absorbs moisture
when exposed to the atmosphere, keep the oil tightly capped until you use it.
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 charging pump in a clean container of new oil and
connect the pump discharge connection to the oil charging valve (A) located on the remote
oil reservoir 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
reservoir is in the OVER FULL region of the oil level indicator label. Close the charging valve
and disconnect 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 keeps 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 lowers 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 9: Charging oil reservoir with oil
25Model YK (Style H), R-134a and R-513A
To Next Page
Loading...
