Hoshizaki MRH/3 사용자 설명서
49
(2) Harvest Pump Timer, "G" Control Board
NOTICE
Factory set for proper operation. Do not adjust. Adjustment outside of the factory
default setting may result in damage to the appliance.
default setting may result in damage to the appliance.
Depending on the harvest pump timer setting, the pump motor either stays off or is
energized the last 50 seconds of harvest. When the pump motor is energized, water
circulates over the evaporator. The harvest water valve is open during harvest for a
maximum of 6 minutes or the length of harvest minus 0 or 50 seconds (determined by
the harvest pump timer setting), whichever is shorter.
When S4 dip switch 7 is in the on position and harvest begins, X11 and X10 relays
energize. A latching circuit is created through the X11 and X10 relays. For further details,
see "VIII.C. Wiring Diagrams."
50 sec. before harvest termination, LED 4 turns off, inlet water valve and X11 relay
de-energize. X10 relay remains energized through the latching circuit. Next, LED 3 turns
on and control board K1 connector pin #5 (DBU wire) energizes, energizing the pump
motor for the last 50 sec. of harvest.
energized the last 50 seconds of harvest. When the pump motor is energized, water
circulates over the evaporator. The harvest water valve is open during harvest for a
maximum of 6 minutes or the length of harvest minus 0 or 50 seconds (determined by
the harvest pump timer setting), whichever is shorter.
When S4 dip switch 7 is in the on position and harvest begins, X11 and X10 relays
energize. A latching circuit is created through the X11 and X10 relays. For further details,
see "VIII.C. Wiring Diagrams."
50 sec. before harvest termination, LED 4 turns off, inlet water valve and X11 relay
de-energize. X10 relay remains energized through the latching circuit. Next, LED 3 turns
on and control board K1 connector pin #5 (DBU wire) energizes, energizing the pump
motor for the last 50 sec. of harvest.
"G" Control Board
S4 Dip Switch Setting
Pump Motor
Time (sec.)
No. 7
ON
50
OFF
0
6. Factory Use (S4 dip switch 8)
Factory set for proper operation. Do not adjust. This must be left in the factory default
position.
position.
7. Freeze Timer (S4 dip switch 9 & 10)
NOTICE
Adjust to proper specification, or the icemaker may not operate correctly.
The freeze timer setting determines the maximum allowed freeze time to prevent possible
freeze-up issues. Upon termination of the freeze timer, the control board initiates the
harvest cycle or pump-out cycle. After 2 consecutive freeze timer terminations, the
control board shuts down the icemaker. In this case, see "II.G.3. Low Ice Production"
for possible solutions. The freeze timer is factory set and no adjustment is required.
Before changing this setting, contact Hoshizaki Technical Support at 1-800-233-1940 for
recommendations.
freeze-up issues. Upon termination of the freeze timer, the control board initiates the
harvest cycle or pump-out cycle. After 2 consecutive freeze timer terminations, the
control board shuts down the icemaker. In this case, see "II.G.3. Low Ice Production"
for possible solutions. The freeze timer is factory set and no adjustment is required.
Before changing this setting, contact Hoshizaki Technical Support at 1-800-233-1940 for
recommendations.
S4 Dip Switch Setting
Time
(min.)
No. 9
No. 10
OFF
OFF
60
OFF
ON
50
ON
OFF
70
ON
ON
75