Thermo King 088669, Руководство пользователя

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Refrigeration Service Operations (Rev. 04/03)
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NOTE: R-134a in disposable containers for automotive
applications is supplied in 30 pound and 50 pound con-
tainers with Acme threads. See Warranty Bulletin 124 for
specifics.
Leak Detection
Leaks can be detected by a Halogen leak detector such as
the G.E. H10G (TK No. 204-712) or portable leak detector
(TK No. 204-854). See Truck and Trailer Service Bulletin
T&T 048 for additional details.
Compressor Oil
As of January 1, 1993, Thermo King Corporation has cho-
sen to use a compressor oil called Polyol Ester (POE)—also
called ester based oil. POE oil is compatible with R-134a
and R-404A and can be used in low temperature applica-
tions. This oil is available from service parts TK No. 203-
413.
Compressors Shipped with R-134a
The RD-II SR compressors are Thermo King compressors
and are charged with Polyol Ester oil (POE) (TK No. 203-
413). All gauge fittings are 1/4 inch fittings.
CAUTION: POLYOL ESTER (POE) IS THE ONLY OIL
FOR USE WITH THERMO KING UNITS USING R-
134a AND R-404A. IT SHOULD NOT BE ADDED TO
STANDARD THERMO KING UNITS, NOR SHOULD
THE STANDARD OR SYNTHETIC OIL BE ADDED TO
SYSTEMS CONTAINING R-134a AND R-404A. COM-
BINING THE TWO OILS COULD RESULT IN DAM-
AGE TO THE SYSTEM.
Because Polyol Ester has an affinity for moisture, it must be
kept in capped containers. In addition, it should be added as
the last step in system repair. Rubber gloves are recom-
mended when handling Polyol Ester because it may cause
skin irritation.
EQUIPMENT RECOMMENDATIONS FOR
USE WITH R-134a AND R-404A
Dedicated Equipment
CAUTION: Equipment that has been used with other
refrigerants MUST NOT be used with R-134a and R-404A
refrigerants. Mixing R-134a and R-404A with other
refrigerants will cause contamination of the refrigerant.
Using contaminated refrigerant will cause system failure.
Vacuum Pumps
When evacuating, a two stage three or five CFM pump is
recommended. It is also recommended that dry nitrogen be
used first. Ideally, a new vacuum pump should be used and
dedicated for use with R-134a or R-404A systems because
residual refrigerants may remain in used vacuum pumps.
Pumps used with other Thermo King refrigerants may be
used but extreme care should be taken to prevent contami-
nation of R-134a or R-404A systems with other refrigerants.
The Thermo King Evacuation Station is recommended. This
station is available from service parts under part number
204-725. See Truck and Trailer Service Bulletin T&T 061
for additional details.
Use only recommended vacuum pump oils and change oil
after every major evacuation. Vacuum pump oils are highly
refined and the use of contaminated oils will prevent the
desired vacuum from being obtained. Failure to follow these
recommendations may result in conditions that will destroy
the vacuum pump.
Gauge Manifold Sets
Gauge manifold sets that show the correct pressure-temper-
ature relationship should be used. Gauge manifolds and
manifold hoses used with other Thermo King refrigerants
maybe used but extreme care should be taken to prevent
contamination of the R-134a and R-404A systems with
other refrigerants. Purge manifold and hoses with dry nitro-