Scotsman FM2400R Servisní příručka stáhnout pdf (Strana 20)

OPERATION: Refrigeration

PUMP DOWN

During the pump down cycle (usually initiated

by the circuit board de-energizing the liquid

line valve) the discharge gases flow through

their normal path to the remote condenser,

through the head pressure control, and into

the receiver. At this point the refrigerant flow

is stopped by the closed liquid line valve. This

action forces the refrigerant into the receiver

and keeps it out of the compressor. The

pump down continues until the low pressure

control turns the compressor off.

REMOTE CONDENSER

EVAPORATOR

DISCHARGE

LINE

LIQUID LINE

HEAD

PRESSURE

CONTROL

VALVE

RECEIVER

COMPRESSOR

Refrigeration Schematic

KING

VALVE

SUCTION

LINE

THERMOSTATIC

EXPANSION

VALVE

LIQUID LINE

VALVE

There are two separate refrigeration systems in this machine.

FM2400R

December, 1988

Page 20

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Scotsman FM2400R Servisní příručka Strana 20