User Guide
Table 1 — Rough-in Dimensions
Filter-Drier Type Filter Type Connection A B C
ASD 28S3-VV ASF 28S3-VV 3/8 ODF 4-23/32 5-19/32
ASD 28S4-VV ASF 28S4-VV 1/2 ODF 4-11/16 5-11/16
ASD 35F5-VV ASF 35F5-VV 5/8 SAE — 7-9/16
ASD 35S5-VV ASF 35S5-VV 5/8 ODF 5-9/32 6-17/32
ASD 45S6-VV ASF 45S6-VV 3/4 ODF 6-1/2 7-3/4 3-11/16
ASD 45S7-VV ASF 45S7-VV 7/8 ODF 6-7/16 7-15/16
ASD 50S9-VV ASF 50S9-VV 1-1/8 ODF 7-1/32 8-27/32
ASD 75S11-VV ASF 75S11-VV 1-3/8 ODF 10-5/16 12-1/4
ASD 75S13-VV ASF 75S13-VV 1-5/8 ODF 9-29/32 12-5/32
SFD 08F3-VV 3/8 SAE — 5-1/2
SFD 08S3-VV 3/8 ODF 5-5/16 6-3/16
SFD 08F4-VV 1/2 SAE — 5-3/4
SFD 08S4-VV 1/2 ODF 3-15/16 5
SFD 08S5-VV 5/8 ODF 3-29/32 5-5/32
SFD 08S6-VV 3/4 ODF 4-5/16 5-9/16
SFD 13F3-VV 3/8 SAE — 5-1/2
SFD 13S3-VV 3/8 ODF 3-31/32 4-27/32
SFD 13F4-VV 1/2 SAE — 5-3/4
SFD 13S4-VV 1/2 ODF 3-15/16 4-15/16
SFD 13F5-VV 5/8 SAE — 6-1/8
SFD 13S5-VV 5/8 ODF 3-29/32 5-5/32
SFD 13S6-VV 3/4 ODF 4 5-1/4
SFD 13S7-VV 7/8 ODF 4-1/4 5-3/4
SFD 27S7-VV 7/8 ODF 6 7-1/2
SFD 27S9-VV 1-1/8 ODF 5-13/16 7-5/8
SFD 54S11-VV 1-3/8 ODF 10-5/16 12-1/4
SFD 54S13-VV 1-5/8 ODF 9-29/32 12-5/32
A-TS/ASK-165S-VV
5/8 ODF 5-3/16 6-7/16
A-TS/ASK-166S-VV
3/4 ODF 5-5/16 6-3/4
A-TS/ASK-167S-VV
7/8 ODF 5-1/2 7
A-TS/ASK-306S-VV
3/4 ODF 8-7/16 9-11/16
A-TS/ASK-307S-VV
7/8 ODF 8-3/8 9-7/8
A-TS/ASK-309S-VV
1-1/8 ODF 8-7/16 10-1/4
3-11/16
3-3/16
1. Determine the extent of the burnout. For mild burnouts,
where the contamination has not spread throughout the
system – it is economical to save the refrigerant charge if
the system has service valves on the compressor. A
severe burnout exists if the oil is discolored, and acid
odor is present, and contamination products are found on
the high and low side. In severe burnouts, extreme
caution should be exercised to avoid breathing the acid
vapors and to prevent contaminated liquid from making
contact with skin.
2. Thoroughly clean and replace all system controls, such
as: thermal expansion valves, solenoids, check valves,
reversing valves, etc. Remove all strainers and filter-
driers.
3. Install a replacement compressor and make a complete
electrical check.
4. Make sure the suction line adjacent to the compressor is
clean. Install an Emerson suction line filter-drier.
5. Pressure and leak-test the system according to the unit
manufacturer’s recommendations.
6. Triple evacuate to at least 500 microns. Break the
vacuum with clean, dry nitrogen at 0 psig.
7. Charge the system through an Emerson liquid line filter-
drier to equipment manufacturer’s recommendations.
8. Start the compressor and put the system in operation.
Record the pressure drop across the suction line filter-
drier on the enclosed label and apply to the side of the
drier shell.
9. Replace the suction line filter-drier if the pressure drop
becomes excessive.
10. Observe the system during the first 4 hours. Repeat step
9 as often as required, until no further change in pres-
sure drop is observed.
11. After the system has been in operation for 48 hours,
check the condition of the oil with the Emerson Acid Alert
test kit. IF the oil test indicates an acid condtion, replace
both the liquid and suction line filter-drier. See fig. 1.
12. Check the system again after approximately 2 weeks of
operation. IF the oil is still discolored, replace the liquid
and suction line filter-drier.
13. Clean-up is complete when the oil is clean and odor-free,
and is determined to be acceptable with the Emerson
Acid Alert test kit.
For detailed burnout clean-up procedure and recommenda-
tions, consult the
RSES Service Manual, section 91.
Compressor Motor Burnout Clean-up Procedure – Suction Line Method
B .078
+
A .062
+
C*
4” MINIMUM
3/8” TUBE
SCHRADER FITTING & CAP
3/8” SIGHT GLASS
FEMALE SCHRADER FITTING
MALE SCHRADER FITTING
MUST BE ON BOTTOM OF LINE
TO COMPRESSOR
HORIZONTAL SUCTION LINE
The piping arrangement shown will allow you
to remove an oil sample from a system with
a hermetic compressor, without having to
remove the charge.
Figure 1
*DOES NOT INCLUDE WELD BEAD
3-1/8