Cleaning Stainless Steel Surfaces, Refrigeration

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 tight, thoroughly evacuate the system 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.