hussman GSVM Refrigerator User Manual


 
12
CLEANING STAINLESS STEEL
SURFACES
Generally soap and water will be
sufficient for most cleanings when done of-
ten and regularly. When necessary, sev-
eral cleaning agents can be used. Some of
themare Comet, Bab-O, Liquid NuSteel,
Cooper’s Stainless Steel Cleaner, and Al-
len’s Stainless Steel Cleaner.
REFRIGERATION
The GSVM models employ a refrig-
eration system using a hermetic compres-
sor. The GSVM4060 and GSVM4072 sys-
tems employ a capillary tube for refriger-
ant flow control. The capillary tube is sol-
dered to the suction line pull-out coil for
proper heat exchange. If the capillary
should become plugged or damaged for
some reason it is best to replace the whole
heat exchanger with a new one. Consult
the factory for the proper replacement.
The GSVM-5272 employs a bleed
port type expansion valve for proper re-
frigerant control.
As stated previously, these cases are self-
contained with the condensing unit
mounted at the bottom. They are
equipped with a hermetic compressor and
a capillary tube. The condenser is of fin
and tube construction and SHOULD BE
PERIODICALLY CLEANED TO MAIN-
TAIN EFFICIENT OPERATION.
If for any reason the cabinet must
be recharged, consult the serial plate found
inside the cabinet for the proper refriger-
ant charge and weight.
If it should become necessary to leak
test the system, please adhere to the follow-
ing notice:
BECAUSE OF THE CFC ATMOS-
PHERIC CONSIDERATIONS BEING
TAKEN TODAY, WE ASK THAT LEAK
TESTING BE DONE WITH REFRIGER-
ANT 22 MIXED WITH NITROGEN
LEAK TESTING
The test gas cylinder must be
equipped with a pressure gauge and regu-
lator so that system test pressures do not
exceed maximum allowable limits. Do not
ever use anything other than a R-22/
Nitrogen mixture for leak testing.
Attach a refrigerant test gas cylin-
der to your service manifold and connect
the manifold to the charging port on the
liquid line valve.
Charge an R-22/Nitrogen mixture
into the system, raising the pressure to the
unit’s nameplate for the low side and high
side pressures. Using an electronic detec-
tor, carefully check the entire system for
leaks. Take special care to inspect all
brazed and flare connections.
EVACUATION
After the system is proven leak
tig ht, thor oughly ev acu ate the s yst em ac-
cording to the following procedure:
a. Discharge the refrigerant-nitrogen mix-
ture, allowing it to blow from the sys-
tem as rapidly as possible, into any
empty cylinder.