Hoshizaki KM-1300MWH, KM-1300MAH, KM-1300MRH service manual Controls and Adjustments

[d] CONTROLS AND ADJUSTMENTS

The Dip Switch is factory-adjusted to the following positions:

DIP SWITCH NO.	1	2	3	4	5	6	7	8	9	10
KM-1300MAH	OFF	OFF	ON	ON	ON	ON	OFF	OFF	OFF	OFF
KM-1300MWH	OFF	OFF	ON	OFF	ON	ON	OFF	OFF	OFF	ON
KM-1300MRH	OFF	OFF	ON	OFF	ON	ON	OFF	OFF	OFF	OFF

Switch Nos. 1 and 2:

Used for adjustment of the Defrost Timer.

The Defrost Timer starts counting when the Thermistor reads a certain temperature at the Evaporator outlet.

Switch Nos. 3 and 4:

Used for adjustment of the Drain Timer.

When a freeze cycle is completed, the Pump Motor stops, and the icemaker resumes operation in 2 seconds. Then the Pump Motor drains the Water Tank for the time determined by the Drain Timer. The Drain Timer also determines the time to restrain completion of a defrost cycle, i.e. the minimum defrost time.

Switch Nos. 5 and 6:

Used for adjustment of the Drain Counter.

The Pump Motor drains the Water Tank at the frequency determined by the Drain Counter.

Switch Nos. 7 and 8:

Used only for checking the Controller Board. Usually set in OFF position.

Switch Nos. 9 and 10:

Used for adjustment of Freeze Timer. The Freeze Timer determines maximum freeze cycle time. Upon termination of Freeze Timer, machine initiates the harvest cycle. After 2 consecutive timer terminations, machine will shut down, possibly indicating a problem.

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