Oil Level; Oil Filter; Oil Filter Replacement; Single Oil Filter - York MILLENNIUM YS Manual

Use a hand or electric oil pump to pump new oil into the
oil separator. Pump oil into the oil separator until the oil
is approximately half way in the upper sight glass. The
amount of oil removed from the oil separator should
equal the amount of new oil pumped into the oil separa-
tor.

OIL LEVEL

A visual check is sufficient to verify the oil level. Two
sight glasses are part of the oil separator and should be
used to determine the proper operating oil level.
The upper sight glass should have liquid oil visible in the
sight glass with the chiller off and the oil at 105ºF (40ºC)
and 115ºF (46ºC). When the chiller is in operation, the
oil level may be different from the standby condition,
due to the turbulence created by the discharge gas in
the oil separator. See Figure 25.

OIL FILTER

A single oil filter is provided as standard equipment and
dual oil filter arrangements are available as optional
equipment. The oil filter(s) are a replaceable 3 micron
cartridge type oil filter. Use only York approved oil filter
elements. See Figure 17.
FIG. 25 – OIL HEATER AND SIGHT GLASS
The oil filter element should be changed after the first
200 hours of operation and then as necessary thereaf-
ter. Change the oil filter element before the differential
pressure reaches 20 psid.
The York control panel will automatically display the
message "DIRTY OIL FILTER" when the differential
YORK INTERNATIONAL
pressure reaches 20 psid across the oil filter. A safety
shutdown will be initiated if the oil pressure differential
pressure reaches 25 psid. The control panel will display
the message "CLOGGED OIL FILTER"

OIL FILTER REPLACEMENT

SINGLE OIL FILTER

The chiller must be OFF. Turn the rocker switch to the
OFF position; turn the circuit breaker to the OFF posi-
tion to prevent the chiller from being accidentally started.
1. Chiller sizes S0 – S3 have an oil stop solenoid valve
on the inlet supply oil line ahead of the oil filter. This
valve will be automatically closed when the chiller is
turned off.
Chiller sizes S4 and S5 have a hand isolation valve
on the inlet oil line to the oil filter. Close this valve.
2. Close the hand isolation valve located in the oil line
on the outlet of the oil filter.
3. Relieve the refrigerant pressure and oil in the oil fil-
ter and the oil lines through the pressure access port
fitting, located on the top of the filter housing. Con-
nect a refrigeration pressure hose to the pressure
access port and drain the oil and refrigerant into a
suitable refrigerant recovery container.
4. Position a container to collect the oil (less than 2
quarts, 1.9 liters). Loosen and remove the drain nut
at the bottom of the oil filter housing; drain the oil
into the container.
5. Unscrew the oil filter bowl.
6. Remove the oil filter element.
7. Install a new element.
8. Install a new O-ring on the top of the oil filter bowl.
9. Tighten the oil filter bowl.
10. Evacuate the air from the oil filter to 500 microns
psig.
11. Open the hand isolation valves.
12. The chiller is ready to be restarted.
00094VIP

DUAL OIL FILTERS

The dual oil filter option allows one oil filter to be iso-
lated and changed with the chiller in operation.
1. Open the hand isolation valves on the idle filter.
2. Close the hand isolation valves on the filter to
be changed.
FORM 160.47-NOM3
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