Scotsman SLE400R Manual de servicio descargar pdf (Pagina 24)

Removal and Replacement: Refrigeration System

General Information

Work on the refrigeration system should only be

done when it is certain that the system needs

repair.

•This ice machine use R-404A (HP62)

refrigerant and the compressor uses Polyol

Ester oil.

•Do NOT use mineral oil in this refrigeration

system.

•R-404A is a “near azeotrope” and therefore

liquid charging is required.

•When the system is serviced, a special liquid

line dryer is required.

•Polyol ester oil absorbs water very easily, and

when the system is opened for service, it

must be re-sealed as soon as possible (15

minutes maximum).

•Special leak detection equipment is required

to locate small refrigerant leaks. Usually a

leak detector capable of detecting a

Halongenated refrigerant or HFC-134a will

work. Check with the leak detector

manufacturer if in doubt.

•As with any other refrigerant, do not mix

R-404A with pressurized air when leak testing.

•Evacuate the system to 200 microns before

charging.

•Weigh the nameplate charge into the receiver.

SLE400R

January 1995

Page 24

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