Scotsman NME1250R Service Manual page 18

NME1250R
OPERATION: Refrigeration
DISCHARGE
LINE
RECEIVER
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.
LIQUID LINE
LIQUID LINE VALVE
PUMP DOWN
June 1994
Page 18
REMOTE CONDENSER
(CLOSED)
COMPRESSOR
This action forces the refrigerant into the receiver
and keeps it out of the compressor. The pump
down continues until the pump down control opens
turning the compressor off.