Hoshizaki KMD850MRH Service Manual

Hoshizaki America, Inc.

Hoshizaki

Modular Crescent Cuber

Models
KMD-850MAH

“A Superior Degree

of Reliability”

www.hoshizaki.com

KMD-850MWH
KMD-850MRH

SERVICE MANUAL

Number: 73163
Issued: 9-3-2008
Revised: 1-9-2014

IMPORTANT

Only qualied service technicians should attempt to install, service, or maintain
this icemaker. No service or maintenance should be undertaken until the
technician has thoroughly read this Service Manual. Failure to service and
maintain the equipment in accordance with this manual may adversely affect
safety, performance, and warranty coverage.

Hoshizaki provides this manual primarily to assist qualied service technicians in the
service and maintenance of the icemaker.

Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, write, or send an e-mail message to the Hoshizaki Technical
Support Department for assistance.

HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA 30269

Attn: Hoshizaki Technical Support Department

Phone: [phone] Technical Service
[phone]
Fax: [phone]
[phone]
E-mail: [e-mail]

Web Site: www.hoshizaki.com

NOTE: To expedite assistance, all correspondence/communication MUST include the

following information:

  •ModelNumber

  •SerialNumber

  •Completeanddetailedexplanationoftheproblem.

2

IMPORTANT

This manual should be read carefully before the icemaker is serviced or
maintenance operations are performed. Only qualied service technicians
should install, service, and maintain the icemaker. Read the warnings contained
in this booklet carefully as they give important information regarding safety.
Please retain this booklet for any further reference that may be necessary.

CONTENTS

I. Specications ...................................................................................................................... 5

A. Icemaker ....................................................................................................................... 5

1. KMD-850MAH (air-cooled) ....................................................................................... 5

2. KMD-850MWH (water-cooled) ................................................................................. 6

3. KMD-850MRH (remote air-cooled) .......................................................................... 7

B. Condenser Unit ............................................................................................................. 8

1. URC-9F .................................................................................................................... 8

II. General Information ......................................................................................................... 10

A. Construction ................................................................................................................ 10

1a. Air-Cooled Auxiliary Code C-0 and Earlier ........................................................... 10

1b. Air-Cooled Auxiliary Code C-1 and Later .............................................................11

2a. Water-Cooled Auxiliary Code C-0 and Earlier ...................................................... 12

2b. Water-Cooled Auxiliary Code C-1 and Later ........................................................ 13

3a. Remote Air-Cooled Auxiliary Code C-0 and Earlier ............................................. 14

3b. Remote Air-Cooled Auxiliary Code C-1 and Later ................................................ 15

B. Sequence of Operation ............................................................................................... 16

1. One Minute Fill Cycle ............................................................................................. 16

2. Initial Harvest Cycle .............................................................................................. 16

3. Freeze Cycle ......................................................................................................... 16

4. Pump-Out Cycle ................................................................................................... 16

5. Normal Harvest Cycle ........................................................................................... 17

C. Control Board .............................................................................................................. 19

1. Control Board Layout ............................................................................................. 20

2. Features ................................................................................................................. 21

a) Maximum Water Supply Period – 6 minutes .................................................... 21

b) Harvest Backup Timer and Freeze Timer ......................................................... 21

c) High Temperature Safety .................................................................................. 21

d) Low Water Safety ............................................................................................. 21

e) High Voltage and Low Voltage Cut-outs ........................................................... 21

f) LED Lights and Audible Alarm Safeties ............................................................ 22

3. Controls and Adjustments ...................................................................................... 23

a) Default Dip Switch Settings .............................................................................. 23

b) Harvest Timer (S4 dip switch 1 & 2) ................................................................. 23

c) Pump-Out Timer (S4 dip switch 3 & 4) ............................................................. 24

d) Pump-Out Frequency Control (S4 dip switch 5 & 6)......................................... 24

e) S4 Dip Switch 7 & 8 ........................................................................................ 25

f) Freeze Timer (S4 dip switch 9 & 10) ................................................................. 25

g) Float Switch Control (S5 dip switch 1 through 5) ............................................. 25

3

4. Control Board Check Procedure ............................................................................ 25

5. Control Board Replacement ................................................................................ 26

D. Harvest Control – Thermistor ...................................................................................... 26

1. Thermistor Check Procedure .................................................................................. 26

E. Float Switch ................................................................................................................. 26

1. Float Switch Check Procedure ............................................................................... 26

2. Float Switch Cleaning ............................................................................................ 28

F. Bin Control ................................................................................................................... 29

1. Explanation of Operation ........................................................................................ 29

2. Bin Control Check Procedure................................................................................. 29

III. Technical Information ...................................................................................................... 30

A. Water Circuit and Refrigeration Circuit ........................................................................ 30

1. Air-Cooled Model .................................................................................................... 30

2. Water-Cooled Model .............................................................................................. 31

3. Remote Air-Cooled Model ...................................................................................... 32

B. Wiring Diagrams .......................................................................................................... 33

1a. KMD-850MAH Auxiliary Code C-0 and Earlier ................................................... 33

KMD-850MWH Auxiliary Code C-1 and Earlier .................................................... 33

1b. KMD-850MRH Auxiliary Code C-0 and Earlier .................................................... 34

2. KMD-850MAH and KMD-850MRH Auxiliary Code C-1 and Later ......................... 35

KMD-850MWH Auxiliary Code C-2 and Later ....................................................... 35

C. Performance Data ....................................................................................................... 36

1. KMD-850MAH (air-cooled) ..................................................................................... 36

2. KMD-850MWH (water-cooled) ............................................................................... 37

3. KMD-850MRH (remote air-cooled) ........................................................................ 38

IV. Service Diagnosis ........................................................................................................... 39

A. 10-Minute Diagnostic Procedure ................................................................................ 39

B. Diagnostic Charts ........................................................................................................ 41

1. No Ice Production ................................................................................................... 41

2. Evaporator is Frozen Up ........................................................................................ 44

3. Low Ice Production ................................................................................................ 45

4. Abnormal Ice ......................................................................................................... 46

5. Other ...................................................................................................................... 46

V. Refrigeration Circuit and Component Service Information............................................... 47

A. Refrigeration Circuit Service Information .................................................................... 47

1. Refrigerant Recovery ............................................................................................. 47

2. Brazing .................................................................................................................. 48

3. Evacuation and Recharge (R-404A) ...................................................................... 48

B. Component Service Information .................................................................................. 50

C. Adjustment of Water Regulating Valve - Water-Cooled Model Only ............................. 50

VI. Maintenance ................................................................................................................... 51

VII. Preparing the Icemaker for Long Storage ...................................................................... 52

VIII. Disposal ........................................................................................................................ 54

4

I. Specications

A. Icemaker

1. KMD-850MAH (air-cooled)

AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with netrual for 115V)
AMPERAGE 9.8 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 *786 (357) 743 (337) 685 (311)
Reference without *marks 80 753 (342) 686 (311) 629 (285)

90 743 (337) *639 (290) 580 (263)

100 732 (332) 625 (284) 526 (239)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 11.8 lbs. (5.4 kg) 624pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1570(5.9) 1510(4.6)
WATER gal./24HR (gal./100 lbs.) 125(19.5) 291(37.0)
CEC/CEE TIER LEVEL 1
ENERGY STAR NO
EXTERIOR DIMENSIONS (WxDxH) 30" x 24-5/8" x 28" (762 x 625 x 713 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 217 lbs. (98 kg), Shipping 249 lbs. (113 kg)
CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT

5/8" OD Tube
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 Mechanical Lever Switch and Timer
COMPRESSOR Hermetic, Model CS08KQE-PFV-255
CONDENSER Air-Cooled , Fin and tube type
EVAPORATOR Vertical type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R404A, 2 lb. 8.2 oz. (1140g)
DESIGN PRESSURE High 467PSIG, Low 230PSIG
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 Dispenser or Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V

AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

Note: We reserve the right to make changes in specications and design without prior

notice.

5

2. KMD-850MWH (water-cooled)

AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with netrual for 115V)
AMPERAGE 8.3A ( 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 *836 (379) 830 (376) 786 (357)
Reference without *marks 80 831 (377) 822 (373) 759 (344)

90 830 (376) *815 (370) 759 (344)

100 809 (367) 802 (364) 708 (321)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 12.1 lbs. (5.5 kg) 624pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1390(4.1) 1390(4.0)
WATER gal./24HR (gal./100 lbs.) 165(20.2) 298(35.7)
WATER COOLED CONDENSER 1035(127) 565(68)

gal./24HR (gal./100 lbs.)
CEC/CEE TIER LEVEL 2
ENERGY STAR N/A
EXTERIOR DIMENSIONS (WxDxH) 30" x 24-5/8" x 28" (762 x 625 x 713 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 217 lbs. (98 kg), Shipping 249 lbs. (113 kg)
CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT Cond. Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT Cond. Outlet 3/8" FPT

5/8" OD Tube
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 Pressure Regulator
BIN CONTROL SYSTEM Mechanical Lever Switch and Timer
COMPRESSOR Hermetic, Model CS08KQE-PFV-255
CONDENSER Water-cooled, Tube in tube type
EVAPORATOR Vertical type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R404A, 1 lb. 12.6 oz. (810g)
DESIGN PRESSURE High 427PSIG, Low 230PSIG
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 Dispenser or Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V

AMBIENT TEMP. 45 -100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG

Note: We reserve the right to make changes in specications and design without prior

notice.

6

3. KMD-850MRH (remote air-cooled)

AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with netrual for 115V)
AMPERAGE 9.8A ( 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 *833 (378) 793 (360) 738 (335)
Reference without *marks 80 803 (364) 741 (336) 686 (311)

90 793 (360) *698 (317) 641 (291)

100 782 (355) 685 (311) 589 (267)
SHAPE OF ICE Crescent Cube
ICE PRODUCTION PER CYCLE 11.6 lbs. (5.3 kg) 624pcs.
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1570(5.4) 1490(4.3)
WATER gal./24HR (gal./100 lbs.) 136(19.5) 280(33.6)
CEC/CEE TIER LEVEL 2
ENERGY STAR YES
EXTERIOR DIMENSIONS (WxDxH) 30" x 24-5/8" x 28" (762 x 625 x 713 mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 203 lbs. (92 kg), Shipping 235 lbs. (107 kg)
CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT

5/8" OD Tube
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 Mechanical Lever Switch and Timer
COMPRESSOR Hermetic, Model CS08KQE-PFV-255
CONDENSER Air-Cooled Remote, Condenser Unit URC-9F
EVAPORATOR Vertical type, Stainless Steel and Copper
REFRIGERANT CONTROL Thermostatic Expansion Valve

Condensing Pressure Regulator on URC-9F

REFRIGERANT CHARGE R404A, 9 lbs. 4.2 oz. (4200g)

(Icemaker 5 lbs. 5.4 oz. Cond. Unit 3 lbs. 14.8 oz.)
DESIGN PRESSURE High 467PSIG, Low 230PSIG
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 Dispenser or Ice Storage Bin, Remote Condenser Unit
OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

Note: We reserve the right to make changes in specications and design without prior

notice.

7

B. Condenser Unit

1. URC-9F

Unit: mm [inches]

8

Specications

MODEL: URC-9F

AC SUPPLY VOLTAGE 115/60/1 (Connection to Icemaker)

FAN MOTOR 115 V Total 1.3FLA 65W

EXTERIOR DIMENSIONS (WxDxH) 32-3/16" x 15-11/16" x 21-15/16" (817 x 398 x 558 mm)

DIMENSIONS INCLUDING LEGS (WxDxH) 34-5/16" x 18-1/8" x 36-15/16" (871 x 460 x 938 mm)

EXTERIOR FINISH Galvanized Steel

WEIGHT Net 81 lbs. ( 37 kg ) Shipping 92 lbs. ( 42 kg )

CONNECTIONS - ELECTRIC Permanent - Connection

- REFRIGERANT Discharge Line 1-1/16"-12 UNF Fitting (#10 AEROQUIP)

Liquid Line 5/8"-18 UNF Fitting (#6 AEROQUIP)

CONDENSER Air-cooled, Fin and tube type

FAN MOTOR PROTECTION Thermal Protection

REFRIGERANT CONTROL Condensing Pressure Regulator

REFRIGERANT CHARGE R-404A 3 lbs. 14.8 oz. (1780g)

DESIGN PRESSURE High 467 PSIG

OPERATING CONDITIONS VOLTAGE RANGE 104 ~ 127 V

AMBIENT TEMP. -20 ~ 122 °F

ACCESSORIES -SUPPLIED Leg 2 pcs

Hex. Head Bolt w/Washer 8 x 16 8 pcs

Hex. Nut 8 8 pcs

Note: We reserve the right to make changes in specications and design without prior

notice.

9

II. General Information

A. Construction

1a. Air-Cooled Auxiliary Code C-0 and Earlier

Spray Tubes

Inlet Water Valve

Water Supply Inlet

Hot Gas Valve

Junction Box

Condenser

Control Box

Float Switch

Drain Valve

Thermostatic
Expansion
Valves

Water Pump

Cleaning Valve

Bin Control

Condenser
Fan Motor

Control Switch

Drier

Compressor

10

1b. Air-Cooled Auxiliary Code C-1 and Later

Spray Tubes

Thermostatic
Expansion
Valves

Inlet Water Valve

Water Supply Inlet

Hot Gas Valve

Junction Box

Condenser

Control Box

Float Switch

Drain Valve

Cleaning Valve

Condenser
Fan Motor

Main Transformer

Drier

Control Switch

Water Pump

Compressor

Bin Control

11

2a. Water-Cooled Auxiliary Code C-1 and Earlier

Spray Tubes

Inlet Water Valve

Water Supply Inlet

Hot Gas Valve

Junction Box

Condenser

Control Box

Water
Regulator

Float Switch

Drain Valve

Control Switch

Drier

Compressor

Water Pump

Cleaning Valve

Thermostatic
Expansion
Valves

Bin Control

12

2b. Water-Cooled Auxiliary Code C-2 and Later

Spray Tubes

Thermostatic
Expansion
Valves

Inlet Water Valve

Water Supply Inlet

Hot Gas Valve

Junction Box

Water
Regulator

Condenser

Control Box

Float Switch

Drain Valve

Water Pump

Cleaning Valve

Control Switch

Bin Control

Main Transformer

Drier

Compressor

13

3a. Remote Air-Cooled Auxiliary Code C-0 and Earlier

Spray Tubes

Inlet Water Valve

Water Supply Inlet

Hot Gas Valve

Junction Boxes

Control Box

Receiver Tank

Control Switch

Float Switch

Drain Valve

Water Pump

Drier

Liquid Line Valve

Compressor

Cleaning Valve

Thermostatic
Expansion
Valves

Bin Control

14

3b. Remote Air-Cooled Auxiliary Code C-1 and Later

Spray Tubes

Inlet Water Valve

Water Supply Inlet

Hot Gas Valve

Main Transformer

Junction
Boxes

Control Box

Receiver
Tank

Float Switch

Drain Valve

Water Pump

Cleaning Valve

Thermostatic
Expansion
Valves

Bin Control

Control Switch

Drier

Liquid Line Valve

Compressor

15

B. Sequence of Operation

The steps in the sequence are as outlined below. When power is supplied, the red
"POWER OK" LED and the green "BC CLOSED" LED on the control board come on (If
the yellow "BC OPEN" LED is on, the unit will not start. In this case clear ice away from
the bin control actuator). A 5-second delay occurs at startup. Note that the order of the
green sequence LEDs from the outer edge of the board is 1, 4, 3, 2.

1. One Minute Fill Cycle

LED 4 is on. WV opens and the ll period begins. After 1 minute, the board checks for a
closed F/S. If F/S is closed, the harvest cycle begins. If not, WV will remain energized
through additional 1 minute cycles until water enters the sump and F/S closes. This
serves as a low water safety to protect the water pump.

2. Initial Harvest Cycle

LEDs 1, 4, and 2 are on. WV remains open, Comp, FMR, HGV energize. The control
board monitors the warming of the evaporator via the thermistor located on the suction
line. When the thermistor reaches 48°F (9°C), the control board reads a 3.9 kΩ signal
from the thermistor and turns harvest termination over to the adjustable harvest timer
which is factory set for normal conditions. The timer has settings of 60, 90, 120, and
180 seconds (S4 dip switch 1 & 2). For details, see "II.C.3.b) Harvest Timer." When the
harvest timer completes its countdown, the harvest cycle is complete and the freeze
cycle starts. The minimum total time allowed by the board for a complete harvest cycle
is 2 minutes. WV is open during harvest for a maximum of 6 minutes or the length
of harvest minus 50 seconds, whichever is shorter. LED 4 goes off when WV closes.
PM energizes and runs for the last 50 seconds of harvest. LED 3 comes on when
PM energizes. At the end of harvest, the control board checks the position of F/S and
proceeds to the freeze cycle if it is closed or calls for a 1-minute ll if it is open.

3. Freeze Cycle

LED 1 is on. Comp, FMR, and PM continue to run, FMS energizes, LLV opens, HGV
closes and the freeze cycle starts. For the rst 5 minutes the control board will not accept
a signal from F/S. This 5 minute minimum freeze acts as a short cycle protection. At the
end of 5 minutes, F/S assumes control. As ice builds on the evaporator the water level in
the sump lowers. The freeze continues until F/S opens and terminates ice production.

4. Pump-Out Cycle

LEDs 1, 4, 3, and 2 are on. With S4 dip switch 5 and 6 in the factory default position, the
1st pump out occurs after the 11th freeze cycle and every 10th cycle thereafter. Comp
and FMR continue to run, DV and WV open, HGV opens, LLV closes, and FMS de­energizes. PM stops for 2 seconds. SR energizes, restarting PM and taking water from
the sump and forcing it to go through DV and down the drain. At the same time, water
ows through the vent tube to power ush the F/S. After 10 seconds, the pump out is
complete. The pump-out frequency control is factory-adjusted to drain the water tank
every 10 cycles, and no adjustment is required. However, where water quality is bad and
the icemaker needs a pump out more often, the pump-out frequency can be adjusted.
The pump-out frequency control can be set to have a pump out occur every cycle,
or every 2, 5, or 10 cycles (S4 dip switch 5 & 6). For details, see "II.C.3.d) Pump-Out
Frequency Control."

16

5. Normal Harvest Cycle

LEDs 1, 4, and 2 are on. Comp, FMR, and HGV remain energized and WV opens. PM
stops. As the evaporator warms, the thermistor reaches 48°F (9°C). The control board
then receives the thermistor's 3.9 kΩ signal and starts the harvest timer. When the
harvest timer completes its countdown, the harvest cycle is complete. The minimum total
time allowed by the board for a complete harvest cycle is 2 minutes. WV is energized
during harvest for a maximum of 6 minutes or the length of harvest minus 50 seconds,
whichever is shorter. LED 4 goes off when WV closes. PM energizes and runs for the last
50 seconds of harvest. LED 3 comes on when PM energizes. At the end of harvest, the
control board checks the position of F/S and proceeds to the freeze cycle if it is closed or
calls for a 1-minute ll if it is open.
The unit continues to cycle through freeze and harvest cycles until the bin control
activates (opens) and shuts the unit down.

Note: To prevent incomplete batches of ice from forming on the evaporator, the control

board will only shut down the machine within the rst 5 minutes of the freeze
cycle. If ice pushes the bin control actuator in (open) after the rst ve minutes of
the freeze cycle, the control board will allow the machine to complete the freeze
cycle and the following harvest cycle before shutting down the machine.

Legend: Comp–compressor; DV–Drain Valve; FMR–remote fan motor; FMS–self-contained
fan motor; F/S–oat switch; HGV–hot gas valve; LLV–liquid line valve;
PM–pump motor; SR–service relay; WV–inlet water valve

17