Hoshizaki KM-1301SAH/3 User Manual download pdf (Page 27)

7

e) Harvest Pump Timer (S4 dip switch 7)

CAUTION

Factory set for proper operation. Do not adjust. Adjustment outside of the

factory default setting may result in damage to the icemaker.

Depending on the harvest pump timer setting, the pump motor energizes and runs

the last 0 or 50 seconds of harvest. When the pump is on, water circulates over the

evaporator. The 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 on, the pump motor is energized through the #5 pin (DBu wire)

on the control board K1 ten-pin connector and the X1 relay (auxiliary code T-0, U-0), X10

relay (auxiliary code U-1 and later). The #5 pin (DBu wire) is used in most applications

to reverse the pump motor or energize the drain valve in pump-out cycles. In this

application, it is used for the pump-out cycle (reverse rotation) as well as the harvest

pump timer (freeze rotation). Therefore, the harvest pump timer relays are needed to

control the pump motor direction during the pump-out and harvest cycles. See "III.B.

Wiring Diagrams."

S4 Dip Switch Setting

Pump Motor

Time (seconds)

No. 7

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)

CAUTION

Adjust to proper specication, or the unit 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  consecutive freeze timer terminations, the control

board shuts down the icemaker. In this case, see "IV.F.3. Low Ice Production" for

possible solutions. The freeze timer is factory set, and generally no adjustment

is required. Before changing this setting, contact Hoshizaki Technical Support at

1-800-33-1940 for recommendations.

S4 Dip Switch Setting

Time

(minutes)

No. 9 No. 10

OFF OFF 60

OFF ON 50

ON OFF 70

ON ON 60

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Hoshizaki KM-1301SAH/3 User Manual Page 27

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