Hoshizaki KM-901MAH 用户手册

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页码 87
5
b) "G" Control Board: Auxiliary Code U-1 and Later
•  WV time: 6 min. or the length of harvest minus 0 or 
50 sec. (S4 dip switch 7), whichever is shorter. DO 
NOT ADJUST S4 dip switch 7 on this model.
• Maximum harvest time: 
0 min. 
F/S
 check
 to 3-min. timer
 in control 
(S4 dip switch
 
 & 
)
Legend:
 
Comp
–compressor
FM
–fan motor
FMR
–fan motor-remote
F/S
–float switch
HGV
–hot gas valve
LLV
–liquid line valve
MBC
–mechanical bin control
PM
–pump motor
WV
–inlet water valve
Components Energized when the Control Switch is in the "WASH" Position
The "WASH" position on the control switch is used when cleaning and sanitizing the unit. When in the "WASH" position, power is 
supplied to the pump motor. With the cleaning valve closed, the cleaner and sanitizer flow over the outside of the evaporator plate 
assembly. With the cleaning valve open, the cleaner and sanitizer flow over both the outside and the inside of the evaporator plate 
assembly. 
Note: Close the cleaning valve after cleaning and sanitizing are complete, otherwise the unit will not restart when the control 
 
          switch is placed in the "ICE" position.
"G" Control Board Sequence Flow Chart
1. 1-Minute  
 
   
 Fill Cycle
Cycle Steps
2. Harvest Cycle
Thermistor in 
control
3. Freeze Cycle
• Minimum freeze time: 5 min.
• Maximum freeze time: freeze timer setting 
(S4 dip switch 9 & 
0)
F/S
 in control 
4. Pump-Out Cycle
• Factory set for every 
0th cycle (S4 dip 
switch 5 & 6)
• Pump motor stops 
for 
 
sec., then 
reverses for 
0/
sec. (S4 dip switch 
3 & 4)
WV
 energized
F/S
 open
WV
 continues
Comp
 energized
FMR
 energized
HGV
 energized
Thermistor temperature 
reaches 48
°F (9°C) (3.9 kΩ 
or less). Harvest timer starts.
F/S
 open
Comp
 continues
FMR
 continues
PM
 energized 
FMS
 energized
LLV
 energized
HGV
 de-energized
F/S
 closed
Comp
 continues
FMR
 continues
HGV
 energized
PM
 de-energizes for 
 sec.,
       then reverses for 
0/
0 sec. 
  
FM
 de-energized
LLV 
de-energized
F/S
 check
Initial startup 
begins here 
after 5-sec. 
delay
If 
F/S
 is open, compressor stops and cycle returns to 
-Minute Fill Cycle
1. Bin Full
 Shutdown Delay:
• 
Fill Cycle
5 sec. after activation.
• 
Harvest Cycle
–At the end of the harvest cycle, or up to 
5 sec. into the 
 
  
                         freeze cycle if activated at the end of the harvest cycle.
 
• 
Freeze Cycle
sec. after activation if activated at least 
5 sec. before the 
     
     
     
    
 
              5-min. short cycle protection timer expires. Otherwise, at t
he end 
 
 
              of the next harvest cycle.
Shutdown 
and Restart
MBC Operation
MBC
 open
Green "BC CLOSED" LED off
Yellow "BC OPEN" LED on
Yellow "BC OPEN" LED continues. 
All components de
-energized
5-min. timer 
in control
F/S
 closed
F/S
 open or freeze 
timer expires
2. Icemaker Off
     All components 
   
  
     de-energized.
3. Ice Level Lowered
 Ice level lowered. No ice   
    
pressing against MBC actuator 
paddle. Icemaker starts at 
 "
-Minute Fill Cycle."
To 
 above
MBC
 closed
Green "BC CLOSED" LED on
Yellow "BC OPEN" LED off
0 or 50 sec.
PM 
energized
WV
 de-energized
Harvest Pump 
Timer
KM-901MAH, KM-901MWH, KM-901MRH/3