Hoshizaki MODULAR CUBELET SERENITY SERIES FS-1022MLH-C - E) Shutdown Cycle

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e) Shutdown Cycle
(1) Infrared Sensor: When power is supplied to the icemaker, the green LED on IS
turns on. The green LED remains on constantly. As ice lls the storage bin to the
levelofactivatingIS,ISyellowLEDturnson(ashingorsteady).TheyellowLED
asheswheniceisattheouterlimitofitsrangeandturnssteadyasicenears.After
theyellowLEDturnson(ashingorsteady),ISshutdowndelaytimer(S1dipswitch
1, 2, 3) begins. For a typical dispenser unit application, a 100-second shutdown delay
is recommended. When used with a standard Hoshizaki storage bin, any shutdown
delaysettingisacceptable.See"II.C.3.b)InfraredSensorShutdownDelay(S1dip
switch1,2,3)."OnceISshutdowndelaytimerterminates,CR(X1onCB)andPDS
de-energize and the 5-minute ice purge timer begins. Unit is in pump-down mode.
Once the low-side pressure drops to 9PSIG, CLPS opens, de-energizing MC, Comp,
and FMR. When the 5-minute ice purge timer terminates, GMR (X2 on CB), GM, and
GMPR de-energize.
Note: If IS fails to shut down the icemaker, MBC opens, CB shuts down the icemaker,
and a 9-beep alarm sounds.
(2) Mechanical Backup Bin Control: CB shuts down the entire unit within 10 seconds
when MBC opens (actuator paddle engaged), and sounds a 9-beep alarm.
Legend: CB–control board; CCH–crankcase heater; CLPS–control low-pressure
switch; Comp–compressor; CR–compressor relay (pump-down solenoid);
DT–drain timer; DV–drain valve; EH–evaporator heater; FMR–fan
motor-remote; F/S–oatswitch;GM–gear motor; GMPR–gear motor protect
relay; GMR–gear motor relay; IS–infrared sensor; LF/S–loweroatswitch;
MBC–mechanical backup bin control; MC–magnetic contactor;
PDS–pump-down solenoid valve; UF/S–upperoatswitch; WV–inlet water
valve