Filter Element Replacement (Single Oil Filter Assembly) And Oil Pump Strainer Servicing; Drain Oil From Isolated Oil Line; Table 5-3. Oil Filter Replacement Parts Required - Emerson Vilter VSS Installation, Operation & Maintenance Manual

Section 5 • Maintenance/Service
Filter Element Replacement (Single Oil Filter
Assembly) and Oil Pump Strainer Servicing
WARNING
When working with refrigerants, ensure there is
adequate ventilation and refrigerant vapor detectors
as per ASHRAE standards. Failure to comply may
result in serious injury or death.
WARNING
Avoid skin contact with oil. Wear rubber gloves and a
face shield when working with oil. Failure to comply
may result in serious injury or death.
Change the oil filter as outlined in the Maintenance and
Service Interval, see Table 5-1. Maintenance & Service
Interval.
Ensure to check the oil pressure drop and record it
This procedure is for a compressor unit equipped with a
single oil filter assembly only, but can be used for units
equipped with dual oil filters. The compressor unit must
be shut down prior to servicing, see Stopping/Restarting
procedure in Section 4.
See Table 5-3 for the parts required for an oil filter re-
placement, with their part numbers.
Table 5-3. Oil Filter Replacement Parts Required, with their numbers
KIT
KT773B
KT773A
KT774**
KT721
KT722
*2 Kits required
**Supplied on VSS 1501-1801 Single Screw compressor units
VSS/VSM/VSH/VSSH • Installation, Operation and Maintenance Manual • Emerson • 35391SD
NOTE
daily.
Oil Filter Oil Filter Element
3111A 3109B
3109A 3109B
3112A 3110B
3007A 3007B
3039A 3039B
For filter housings with drain plugs only, replace
with O-ring (VPN 3111AB) after removing drain
plug. Drain plug and O-ring are not shown in this
procedure.

Drain Oil From Isolated Oil Line

1. Isolate the compressor unit, see Compressor Unit
Isolation procedure.
2. Close oil supply valve and oil filter outlet valve to
isolate oil filter assembly and oil pump strainer for
servicing.
3. Remove plug from drain valve on oil pump strainer.
4. If needed, attach a hose with 1/4" male adapter to
drain valve to aid in controlling discharged oil.
5. Using a drain pan, slowly open drain valve to reduce
pressure and allow oil to completely drain from oil
lines and oil pump strainer.
6. Remove plug from bleed valve on oil filter housing.
7. If needed, attach a hose with 1/4" male adapter to
bleed port to aid in controlling discharged oil.
8. Using a drain pan, slowly open bleed valve and al-
low oil to completely drain from filter housing.
Remove plug from oil filter head assembly to aid in
oil removal.
O-Ring and Drain
Filter Type
Plug
2176BZ
2176BY
2176BY
2176BU
2176AJ
NOTE
Single
Dual*
Single
Single
Single
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