KM-650MAH-E Service manual - Hoshizaki

(2) Harvest Pump Timer, "G" Control Board
KM-320MAH-E and KM-650MAH-E Auxiliary Code U-1 and Later
KM-515MAH-E Auxiliary Code U-2 and Later
Factory set for proper operation. Do not adjust. Depending on the harvest pump timer
setting, the pump motor energizes and runs the last 0 or 50 seconds of harvest. The
water valve is energized 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. NOTICE! Do not adjust S4 dip switch 7 out of the factory
default position on this model. This dip switch must be left in the factory default
position or this icemaker will not operate correctly.
"G" Control Board
S4 Dip Switch Setting Pump Motor
No. 7 Time (seconds)
ON 50
OFF 0
f) Factory Use (S4 dip switch 8)
Factory set for proper operation. Do not adjust. This must be left in the factory default
position.
g) 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. After 2 consecutive timer terminations, the control board shuts the
icemaker down. In this case, see "IV.F.3. Low Ice Production" for possible solutions.
The freeze timer is factory set and no adjustment is required.
S4 Dip Switch Setting Time
No. 9 No. 10 (minutes)
OFF OFF 60
OFF ON 50
ON OFF 70
ON ON 75
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