Hoshizaki KM-901MWH, KM-901MAH, KM-901MRH/3 service manual KM-901MRH remote air-cooled

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3. KM-901MRH (remote air-cooled)

APPROXIMATE ICE				AMBIENT TEMP.			WATER TEMP. (ºF/ºC)
PRODUCTION PER 24 HR.				(ºF/ºC)		50/10			70/21			90/32
				70/21	889	403		859	389		803	364
				80/27	866	393		818	371		755	343
				90/32	859	389		785	356		724	328
lbs./day		kg./day		100/38	843	382		771	350		668	303

APPROXIMATE ELECTRIC				70/21		1590			1643			1664
CONSUMPTION				80/27		1630			1712			1705
				90/32		1643			1770			1775
watts				100/38		1630			1771			1780
APPROXIMATE WATER				70/21	246	0.93		219	0.83		194	0.74
CONSUMPTION PER 24 HR.				80/27	225	0.85		182	0.69		165	0.63
				90/32	219	0.83		152	0.57		131	0.50
gal./day		m3/day		100/38	182	0.69		147	0.56		112	0.42
FREEZING CYCLE TIME				70/21		18			20			21
				80/27		19			21			23
				90/32		20			22			24
min.				100/38		20			23			26
HARVEST CYCLE TIME				70/21		4.3			3.9			3.6
				80/27		4.0			3.4			3.2
				90/32		3.9			2.9			2.7
min.				100/38		3.4			2.8			2.4
HEAD PRESSURE				70/21	208	14.6		229	16.1		252	17.7
				80/27	224	15.7		256	18.0		277	19.5
				90/32	229	16.1		279	19.6		301	21.2
PSIG	kg/cm2G			100/38	232	16.3		284	20.0		322	22.6
SUCTION PRESSURE				70/21	35	2.5		37	2.6		41	2.9
				80/27	37	2.6		40	2.8		45	3.1
				90/32	37	2.6		43	3.0		47	3.3
PSIG	kg/cm2G			100/38	38	2.7		44	3.1		51	3.6

TOTAL HEAT OF REJECTION FROM CONDENSER	14,000	BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR	2,200	BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
CONDENSER VOLUME	121	CU. IN (URC-9F)

Note:

1.Pressure data is recorded at 5 minutes into freeze cycle. The data not in bold should be used for reference only.

2.We reserve the right to make changes in specifications and design without prior notice.

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Contents KM-901MAH KM-901MWH Hoshizaki AMERICA, INC Contents Page Page Important Safety Information Serious injuryIndicates important information about the use and care UnitSpecifications Icemaker 1a. KM-901MAH air-cooled Auxiliary Code T-0, U-01b. KM-901MAH air-cooled Auxiliary Code U-1 and Later 2a. KM-901MWH water-cooled Auxiliary Code T-0, U-0 Water Cooled Condenser2b. KM-901MWH water-cooled Auxiliary Code U-1 and Later 3a. KM-901MRH remote air-cooled Auxiliary Code T-0, U-0 3b. KM-901MRH remote air-cooled Auxiliary Code U-1 and Later 4a. KM-901MRH3 remote air-cooled Auxiliary Code T-0, U-0 4b. KM-901MRH remote air-cooled Auxiliary Code U-1 and Later Condenser Unit Specifications Model URC-9FII. General Information Construction KM-901MAH air-cooledKM-901MWH water-cooled KM-901MRH/3 remote air-cooled Sequence of Operation Sequence Cycles and ShutdownControl Board Auxiliary Code T-0, U-0 Shutdown Control Board Auxiliary Code U-1 and LaterOFF Cycle at Shutdown Mechanical Bin Control Activation Control Board Sequence Flow Chart Sequence Flow ChartCycle Bin FullControl Board Auxiliary Code U-1 LaterMinute Harvest Cycle Freeze Cycle Pump-Out Cycle Fill CycleControl Board Control Board Layout Control BoardPart Number 2A3792-01 Harvest Backup Timer and Freeze Timer High Temperature SafetyLow Water Safety Maximum Water Supply Period 6 minutesLED Lights and Audible Alarm Safeties No. of Beeps Type of Alarm Every 3 secSequence Step Energized Time LEDs are On Components Min Max AvgControl Board Auxiliary Code U-1 and Later Controls and Adjustments Default Dip Switch SettingsHarvest Timer S4 dip switch 1 S4 Dip Switch S4 Dip Switch NoPump-Out Timer S4 dip switch 3 Pump-Out Frequency Control S4 dip switch 5S4 Dip Switch Setting Time seconds Inlet Bin Control Selector/Harvest Pump Timer S4 dip switch Factory Use S4 dip switchControl Board S4 Dip Switch Setting Bin Control Control Board S4 Dip Switch Setting Pump Motor Time secondsFreeze Timer S4 dip switch 9 Float Switch Control S5 dip switch 1 G Control BoardRefill Counter S5 dip switch 2 through 5 G Control Board S4 Dip Switch Setting Time MinutesFloat Switch Control SwitchBin Control ThermistorWater Pump Switch Discharge Line Wiring Diagrams ModelCooled-AirWater-Cooled Model PressureHigh* SwitchKM-901MAH air-cooled and KM-901MWH water-cooled PressureSwitch KM-901MRH remote air-cooledHigh KM-901MRH3 remote air-cooled Switch Cooled-WaterModel Cooled-AirModel High* PressureHigh Pressure Switch SwitchPressure Performance Data 912 8351480 1570KM-901MRH remote air-cooled KM-901MRH3 remote air-cooled IV. Service Diagnosis Diagnostic ProcedurePage OFF Control Board Check Shutdown Thermostatic Bin Control Auxiliary Code T-0, U-0Bin Control Check Control Correct LED Board Lighting SequenceMechanical Bin Control Check Mechanical Bin Control Cleaning Float Switch Check and Cleaning Float Switch CheckFloat Switch Cleaning Thermistor Check Diagnostic Charts Problem Possible Cause RemedyNo Ice Production Problem Possible Cause Remedy Problem Possible Cause Remedy Evaporator is Frozen Up Problem Possible Cause Remedy Low Ice Production Abnormal Ice Other Removal and Replacement of Components Service for Refrigerant LinesRefrigerant Recovery Brazing Evacuation and Recharge R-404ARemoval and Replacement of Compressor Removal and Replacement of Expansion Valve Page Removal and Replacement of Evaporator Removal and Replacement of Air-Cooled Condenser Removal and Replacement of Water-Cooled Condenser Removal and Replacement of Remote Air-Cooled Condenser Page Adjustment of Water Regulating Valve water-cooled model Removal and Replacement of Thermistor Removal and Replacement of Inlet Water Valve Removal and Replacement of Pump Motor Removal and Replacement of Control Board VI. Cleaning and Maintenance Cleaning and Sanitizing InstructionsCleaning Procedure Sanitizing Procedure Following Cleaning Procedure Maintenance Preparing the Icemaker for Long StorageDrain the water tank