Hoshizaki KM-500MAH User manual

™
SERVICE MANUAL
ISSUED: NOV. 7, 2002
KM-500MAH
KM-500MWH
KM-500MRH
MODULAR CRESCENT CUBER
Reliability is a
beautiful thing
TM
REVISED: DEC. 16, 2003
NUMBER: 73104

5
I. SPECIFICATIONS
1. KM-500MAH
Note: We reserve the right to make changes in specifications and design without prior notice.
AC SUPPLY VOLTAGE 115/60/1
AMPERAGE 13 A ( 5 Min. Freeze AT 104°F / WT 80°F)
MINIMUM CIRCUIT AMPACITY 20 A
MAXIMUM FUSE SIZE 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *499 (226) 468 (212) 428 (194)
Reference without *marks 80 475 (216) 427 (194) 389 (176)
90 468 (212) *393 (178) 353 (160)
100 461 (209) 384 (174) 317 (144)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 9.5 lbs. ( 4.3 kg ) 480 pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1212 (7.4) 1164 (5.6)
WATER gal./24HR (gal./100 lbs.) 113 (28.8) 250 (50.1)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 30-5/6" (560 x 695 x 770 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 151 lbs. ( 69 kg ), Shipping 175 lbs. (80 kg)
CONNECTIONS - ELECTRIC Permanent - Connection
- WATER SUPPLY Inlet 1/2" FPT
- DRAIN Outlet 3/4" FPT
CUBE CONTROL SYSTEM Float Switch
HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer
ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Proximity Switch with Delay
COMPRESSOR Hermetic, Model AKA9455ZXA
CONDENSER Air-cooled, Fin and tube type
EVAPORATOR Vertical type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb. 10 oz. ( 735 g )
DESIGN PRESSURE High 467 PSIG, Low 230 PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )
COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )
REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch
LOW WATER PROTECTION Float Switch
ACCESSORIES -SUPPLIED N/A
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
3/8" OD Pipe

11
II. GENERAL INFORMATION
1. CONSTRUCTION
[a] KM-500MAH
Spray Tubes Water Supply Inlet
Control Switch
Condenser
Hot Gas Valve
Expansion Valve Fan Motor
Condenser
Compressor Drier
Float Switch Control Box
Water Pump
Bin Control Thermostat
(exceptmodels with
MechanicalBinControl)
Mechanical
Bin Control
(exceptmodels
withThermostat)

28
III. TECHNICAL INFORMATION
1. WATER CIRCUIT AND REFRIGERANT CIRCUIT
[a] KM-500MAH

37
4. PERFORMANCE DATA
[a] KM-500MAH
Note: Pressure data is recorded at 5 minutes into freeze cycle. The data not in bold should be used for
reference only.
We reserve the right to make changes in specifications and design without prior notice.
70/21 499 226 468 212 428 194
80/27 475 216 427 194 389 176
90/32 468 212 393 178 353 160
lbs./day kg./day 100/38 461 209 384 174 317 144
70/21
80/27
90/32
watts 100/38
70/21 250 0.95 210 0.79 187 0.71
80/27 219 0.83 157 0.59 153 0.58
90/32 210 0.79 113 0.43 100 0.38
gal./day m3/day 100/38 163 0.62 110 0.42 89 0.34
70/21
80/27
90/32
min. 100/38
70/21
80/27
90/32
min. 100/38
70/21 244 17.2 263 18.5 285 20.1
80/27 259 18.2 289 20.3 308 21.7
90/32 263 18.5 310 21.8 331 23.3
PSIG kg/cm
2
G100/38 266 18.7 315 22.1 350 24.6
70/21 49 3.4 52 3.7 54 3.8
80/27 51 3.6 56 3.9 57 4.0
90/32 52 3.7 59 4.1 61 4.3
PSIG kg/cm2G100/38 52 3.6 59 4.2 62 4.4
3.3
2.6
2.0
8206 BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
3.3 2.0
27
28 29 31 33 37
WATERTEMP. (ºF/ºC)
AMBIENT TEMP.
(ºF/ºC) 50/10 70/21 90/32
1164
1175
1178
APPROXIMATE ICE
PRODUCTION PER 24 HR.
APPROXIMATE ELECTRIC
CONSUMPTION
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
FREEZING CYCLE TIME
1186
1178
1197
1212
1219
1204
1227
1241
1268
SUCTION PRESSURE
TOTAL HEAT OF REJECTION FROM CONDENSER
35
29
30 33
HARVEST CYCLE TIME
HEAD PRESSURE 2.0
3.9
38
43
3.5
3.3
3.1
2.5
2.0