Hoshizaki DCM 300BAH(-OS) Ice Maker User Manual


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11
2. Sequence Flow Chart
Legend:
BC-bin control
CB-control board
Comp-compressor
DCT-drain cycle timer (12-hr. timer)
DV-drain valve
DVT-drain valve timer (20-min. timer)
FM-fan motor
FT-ll timer (90-sec. low water safety timer)
GM-gear motor
LF/S-loweroatswitch
UF/S-upperoatswitch
WV-inlet water valve
Components Energized when the Control Switch is in the "DRAIN" Position
The "DRAIN" position on the control switch is used when cleaning and sanitizing the icemaker. This allows
cleaner and sanitizer to drain from the reservoir and evaporator assembly. When switching to the "DRAIN"
position during the freeze cycle, the drain valve does not energize until the 150-sec. shutdown sequence
terminates (Shutdown & Restart).
Note: To bypass the 150-sec. shutdown sequence, move the power switch to the "OFF" position, place the
control switch in the "DRAIN" position, then move the power switch back to the "ON" position.
UF/S open
LF/S open
FT starts (90-sec.)
Comp continues
FM continues
GM continues
WV energized
"DCM-PB" and "DCM-OS" Control Board Sequence Flow Chart
DCM-300BAH(-OS)
Cycle Steps
2. Ice Purge Cycle
WV energized
LF/S closed
UF/S closed
GM energized
WV de-energized
GM continues
Comp energized
FM energized
Startup begins here
1. Fill Cycle
3. Freeze Cycle
Rell
Maximum 90sec.
LF/S closed
UF/S closed
FT terminated
Comp continues
FM continues
GM continues
WV de-energized
FT Exceeded
UF/S open
GM continues
WV continues
Comp de-energized
FM de-energized
WV continues
GM de-energizes
WV continues
until UF/S closes
60 sec.
Shutdown Sequence
UF/S open
60 sec.
Shutdown & Restart
90 sec.
1. Bin Full
GM continues
Comp de-energized
FM de-energized
GM de-energized
3. Icemaker Off
BC open
Comp continues
FM continues
GM continues
2. Ice Purge Cycle
4. Icemaker
Restart
150-sec. Shutdown Sequence
BC closed
4. 12-Hr. Drain Cycle
DV opens for 20 min. every 12 hr.
See "12-Hr. Drain Cycle" below.
12-Hr. Drain Cycle
1. Ice Purge Cycle
2. Drain
3. Icemaker
Restart
•FT90sec.startswhenLF/Sopens
and terminated when UF/S closes.
to "1. Fill Cycle" above
•FTexceeded:CBstarts
shutdown sequence.
•WVenergizedcontinuously.
•When UF/S closes, 2. Ice
Purge Cycle starts.
90 sec. FT
exceeded
60 sec.
to "1. Fill Cycle" above
60 sec.
DV energizes
GM de-energized
DVT terminates
DCT terminates
DVT starts
GM continues
Comp de-energizes
FM de-energizes
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