Hoshizaki KM-1301SAH/3 User Manual download pdf (Page 23)

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2. Features

a) Maximum Water Supply Period - 6 minutes

The inlet water valve will be open during harvest for 6 minutes or the length of harvest

minus 0 or 50 seconds (harvest pump timer (S4 dip switch 7)), whichever is shorter. For

details, see "II.C.3.e) Harvest Pump Timer (S4 dip switch 7)."

b) Harvest Backup Timer and Freeze Timer

The harvest backup timer shuts down the icemaker if, for two cycles in a row, the harvest

cycle takes more than 0 minutes to complete. The control board will signal this problem

using  beeps every 3 seconds.

The freeze timer shuts down the icemaker if, for two cycles in a row, the freeze cycle

takes longer than the time specied to complete. The control board will signal this

problem using 3 beeps every 3 seconds. The freeze timer is factory set using S4 dip

switch 9 & 10. For details, see "II.C.3.g) Freeze Timer (S4 dip switch 9 & 10).

The "ALARM RESET" button on the control board must be pressed with power on to

reset either of these safeties.

c) High Temperature Safety

The temperature of the suction line in the refrigeration circuit is limited by the high

temperature safety. This protects the unit from excessively high temperatures. If the

evaporator temperature reaches 17°F±7°F (53°C±4°C), the control board reads a .8 kΩ

signal from the thermistor and shuts down the icemaker.

The control board will signal this problem using 1 beep every 3 seconds. The "ALARM

RESET" button on the control board must be pressed with power on to reset the safety.

d) Low Water Safety

The control board checks the position of the oat switch at the end of the initial 1-minute

ll cycle and at the end of each harvest cycle. If the oat switch is in the up position

(electrical circuit closed), the control board changes to the next cycle. If the oat switch

is in the down position (electrical circuit open), the control board changes to additional

1-minute ll cycles until water enters the tank and closes the oat switch. When the oat

switch closes, the control board changes to the next cycle. The unit will not start without

adequate water in the tank. This serves as a low water safety to protect the water pump.

For water-cooled model, if the condenser water supply is shut off, the unit is protected by

the high-pressure switch.

e) High Voltage and Low Voltage Cut-outs

The maximum and minimum allowable supply voltages of this icemaker are limited by

the high voltage and low voltage cut-outs. If miswiring (especially on single phase 3 wire

models) causes excessive voltage (147Vac±5% or more), the high voltage cut-out shuts

down the circuit in 3 seconds and the icemaker automatically stops. The control board

will signal this problem using 7 beeps every 3 seconds.

The icemaker also automatically stops in cases of insufcient voltage (9Vac±5% or

less). The control board will signal this problem using 6 beeps every 3 seconds.

When the proper supply voltage is resumed, the icemaker automatically starts running

again.

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Hoshizaki KM-1301SAH/3 User Manual Page 23

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