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Legend:
BC - bin control
Comp - compressor
FMS - self-contained fan motor
FR - ush relay
FWV - ush water valve
GM - gear motor
GMPR - gear motor protect relay
LF/S - lower oat switch
TC - timer control
UF/S - upper oat switch
WCR - water control relay
WV - inlet water valve
UF/S open
LF/S open
90 sec. TC started
WCR de-energized
WV energized
Comp continues
GM continues
FMS continues
GMPR continues
FR continues
60 seconds
F-300BAF, F-500BAF Sequence Flow Chart and Component Operation
Bin control operation
1. Startup
2. Ice Purge Cycle
FR energized
WCR de-energized
WV energized
LF/S closed
UF/S closed
WCR energized
WV de-energized
GM energized
GMPR energized
FR continues
Comp energized
FMS energized
WCR continues
GM continues
GMPR continues
FR continues
Flush switch in "ICE"
Power switch "ON"
2. Shutdown & Restart
90 seconds
1. Bin control proximity switch
opens to stop ice production.
Comp de-energized
FMS de-energized
GM continues
GMPR continues
FWV continues
GM de-energized
GMPR de-energized
FWV continues
3. Gear motor de-energizes
and unit is "OFF"
6.7 sec.
60 seconds
Components Energized when the Flush Switch is in the FLUSH Position
The FLUSH position is used when cleaning and sanitizing the machine. When in the FLUSH position, power is
supplied to the ush valve. This allows cleaner and sanitizer to drain from the evaporator assembly.
1. Fill Cycle
3. Icemaking Cycle
Rell Cycle
LF/S closed
UF/S closed
90 sec. TC ended
WCR energized
WV de-energized
Comp continues
GM continues
FMS continues
GMPR continues
FR continues
4. Low Water Safety
UF/S open
90 sec. TC exceeded
WCR de-energized
WV continues
Comp continues
GM continues
FMS continues
GMPR continues
FR continues
Comp de-energized
FMS de-energized
WV continues
GM continues
GMPR continues
FR continues
GM de-energized
GMPR de-energized
WV continues
FR continues
90 sec. timer
60 sec. timer
If rell > 90 sec. TC
60 sec. timer
BC open
FR de-energized
WCR de-energized
FWV energized
Comp continues
FMS continues
GM continues
GMPR continues
2. Compressor and fan motor
de-energize, gear motor
continues running.
4. Bin control proximity switch
closes. Reservoir lls. LF/S
and UF/S close. Gear motor
starts 6.7 seconds later.
LF/S and UF/S close
WCR energized
WV de-energized
GM energized
GMPR energized
FR continues
BC closed
FR energized
WV energized
FWV de-energized
Comp energized
FMS energized
GM continues
GMPR continues
WCR continues
FR continues
5. Compressor and fan
motor energize. Ice
production begins in 4
to 6 minutes.
UF/S closes terminating
90 sec TC.
LF/S opens
initiating rell
and 90 sec. TC
Low water safety ciruit
closed. (Terminals 3
and 4 on timer board)
If rell achieved, icemaking
cycle starts and timers
are reset.