Hoshizaki KMD-410MAH User manual

Modular Crescent Cuber
Models
KMD-410MAH
KMD-410MWH
INSTRUCTION MANUAL
Issued: 7-5-2013

1
IMPORTANT
Only qualified service technicians should install and service the appliance. To obtain
the name and phone number of your local Hoshizaki Certified Service Representative,
visit www.hoshizaki.com. No installation or service should be undertaken until the
technician has thoroughly read this Instruction Manual. Likewise, the owner/manager
should not proceed to operate the appliance until the installer has instructed them
on its proper operation. Failure to install, operate, and maintain the appliance in
accordance with this manual will adversely affect safety, performance, component life,
and warranty coverage and may result in costly water damage. Proper installation is
the responsibility of the installer. Product failure or property damage due to improper
installation is not covered under warranty.
Hoshizaki provides this manual primarily to assist qualified service technicians in the
installation, maintenance, and service of the product.
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 Support
[phone]
Fax: [phone]
[phone]
E-mail: [email protected]
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 appliance is installed and operated.
Read the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use and maintenance of the appliance.
Retain this manual for any further reference that may be necessary.
CONTENTS PAGE
Important Safety Information---------------------------------------------------------------------------3
I. Specifications -------------------------------------------------------------------------------------------5
A. Electrical and Refrigerant Data-----------------------------------------------------------------5
B. Dimensions/Connections-------------------------------------------------------------------------6
1. KMD-410MAH -----------------------------------------------------------------------------------6
2. KMD-410MWH-----------------------------------------------------------------------------------7
II. Installation and Operating Instructions-----------------------------------------------------------8
A. Checks Before Installation-----------------------------------------------------------------------8
B. How to Remove Panels---------------------------------------------------------------------------8
C. Location ----------------------------------------------------------------------------------------------9
D. Setup------------------------------------------------------------------------------------------------10
E. Bin Control Installation-------------------------------------------------------------------------- 11
F. Electrical Connection ----------------------------------------------------------------------------14
G. Water Supply and Drain Connections ------------------------------------------------------15
1. Icemaker ----------------------------------------------------------------------------------------16
2. Water-Cooled Condenser-------------------------------------------------------------------17
H. Final Checklist ------------------------------------------------------------------------------------19
I. Startup -----------------------------------------------------------------------------------------------20
III. Cleaning and Maintenance Instructions ------------------------------------------------------21
A. Cleaning--------------------------------------------------------------------------------------------21
1. Cleaning Procedure --------------------------------------------------------------------------21
2. Sanitizing Procedure-------------------------------------------------------------------------25
B. Maintenance---------------------------------------------------------------------------------------26
1. Stainless Steel Exterior----------------------------------------------------------------------26
2. Storage Bin and Scoop----------------------------------------------------------------------26
3. Air Filters ---------------------------------------------------------------------------------------- 26
4. Condenser--------------------------------------------------------------------------------------26
C. Preparing the Icemaker for Periods of Non-Use -----------------------------------------27
IV. Disposal-----------------------------------------------------------------------------------------------28

3
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, damage to the appliance, or damage to property.
WARNING Indicates a hazardous situation which could result in death or
serious injury.
NOTICE Indicates a situation which could result in damage to the
appliance or property.
IMPORTANT Indicates important information about the installation, use and
care of the appliance.
WARNING
The appliance should be destined only to the use for which it has been expressly
conceived. Any other use should be considered improper and therefore dangerous.
The manufacturer cannot be held responsible for injury or damage resulting from
improper, incorrect, and unreasonable use. Failure to install, operate, and maintain
the appliance in accordance with this manual will adversely affect safety, performance,
component life, and warranty coverage and may result in costly water damage.
To reduce the risk of death, electric shock, serious injury, or fire, follow basic
precautions including the following:
• Only qualified service technicians should install and service the appliance.
• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result in
death, electric shock, serious injury, fire, or damage.
• The appliance requires an independent power supply of proper capacity. See the
nameplate for electrical specifications. Failure to use an independent power supply of
proper capacity can result in a tripped breaker, blown fuse, damage to existing wiring,
or component failure. This could lead to heat generation or fire.
• THE APPLIANCE MUST BE GROUNDED: Failure to properly ground the appliance
could result in death or serious injury.
• To reduce the risk of electric shock, do not touch the control switch with damp hands.
• Move the control switch to the “OFF” position and turn off the power supply before
servicing. Lockout/Tagout to prevent the power supply from being turned back on
inadvertently.
• Do not make any alterations to the appliance. Alterations could result in electric
shock, injury, fire, or damage to the appliance.

4
WARNING, continued
• The appliance is not intended for use by persons (including children) with reduced
physical, sensory, or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsible for their safety.
• Children should be properly supervised around the appliance.
• Do not climb, stand, or hang on the appliance or allow children or animals to do so.
Serious injury could occur or the appliance could be damaged.
• Do not use combustible spray or place volatile or flammable substances near the
appliance. They might catch fire.
• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.
NOTICE
• Protect the floor when moving the appliance to prevent damage to the floor.
• Follow the water supply, drain connection, and maintenance instructions carefully to
reduce the risk of costly water damage.
• In areas where water damage is a concern, install in a contained area with a floor
drain.
• Install the appliance in a location that stays above freezing. Normal operating ambient
temperature must be within 45°F to 100°F (7°C to 38°C).
• Do not leave the appliance on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the appliance for
these occasions, follow the instructions in “III C. Preparing the Appliance for Periods
of Non-Use.”
• Keep ventilation openings, in the appliance enclosure or in the built-in structure, clear
of obstruction.
• Do not place objects on top of the appliance.
• The dispenser unit/ice storage bin is for ice use only. Do not store anything else in
the dispenser unit/ice storage bin.

5
I. Specifications
A. Electrical and Refrigerant Data
The nameplate provides electrical and refrigerant data. The nameplate is located on the
right side panel. For certification marks, see the nameplate.
We reserve the right to make changes in specifications and design without prior notice.
Single Phase
Model Number KMD-410MAH KMD-410MWH
AC Supply Voltage 115/60/1 115/60/1
Compressor 115-120V 5.1RLA 50.0LRA 115V-120V 5.1RLA 50.0LRA
Pump 120V 0.42FLA 23W 120V 0.42FLA 23W
Fan 120V 0.50FLA 60W --- --- ---
Other 115-120V 0.15A 115-120V 0.15A
Maximum Fuse Size 20 AMPS 20 AMPS
Max. HACR Breaker
(USA Only) 20 AMPS 20 AMPS
Max. Circuit Breaker
(Canada Only) 20 AMPS 20 AMPS
Minimum Circuit Ampacity 20 AMPS 20 AMPS
Design Pressure HI-467PSI
LO-206PSI HI-467PSI LO-206PSI
Refrigerant R404A 18.3 oz. R404A 14.1 oz.

6
B. Dimensions/Connections
1. KMD-410MAH
Unit: mm [inches]

7
2. KMD-410MWH
Unit: mm [inches]

8
II. Installation and Operating Instructions
WARNING
• Install in accordance with all applicable national, state, and local codes and
regulations.
• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after installation. Make sure that none have fallen into the storage
bin.
A. Checks Before Installation
NOTICE
Remove all shipping cartons, tape, and packing material. If any are left in the icemaker,
it will not work properly.
• Visually inspect the exterior of the shipping container and immediately report any
damage to the carrier. Upon opening the container, any concealed damage should also
be immediately reported to the carrier.
• Remove the panels to prevent damage when installing the icemaker. (See “B. How to
Remove Panels.”)
• Remove the package containing the accessories.
• Remove the protective plastic film from the panels. If the icemaker is exposed to the sun
or to heat, remove the film after the icemaker cools.
• Check that refrigerant lines do not rub or touch lines or other surfaces, and that the fan
blade turns freely.
• Check that the compressor is snug on all mounting pads.
• See the nameplate on the left or right side panel, and check that your voltage supplied
corresponds with the voltage specified on the nameplate.
• This icemaker can be installed on a storage bin or dispenser unit 22” wide or wider. If
using a storage bin, HOSHIZAKI STORAGE BIN, Model B-300 series is recommended.
B. How to Remove Panels - See Fig. 1
• Front Panel: Loosen the screws. Lift up and towards you.
• Top Panel: Lift up at front slightly, push rearward and lift off.

9
• Side Panel (R): Remove the screw. Slide forward slightly and lift off.
• Front Insulation: Lift up slightly, and pull towards you.
• Top Insulation: Push up at front corner, and pop off.
C. Location
NOTICE
• This icemaker is not intended for outdoor use. Normal operating ambient temperature
must be within 45°F to 100°F (7°C to 38°C); Normal operating water temperature
must be within 45°F to 90°F (7°C to 32°C). Operation of the icemaker, for extended
periods, outside of these normal temperature ranges may affect icemaker
performance.
• This icemaker will not work at sub-freezing temperatures. To prevent damage to the
water supply line, drain the icemaker when the air temperature is below 32°F (0°C).
See “III. C. Preparing the Icemaker for Periods of Non-Use.”
For best operating results:
• Icemaker should not be located next to ovens, grills, or other high heat producing
equipment.
Fig. 1
Top Insulation
Front Insulation
Front Panel
Side Panel
Screws Screw
Top Panel
Side Frame

10
• In areas where water damage is a concern, install in a contained area with a floor drain.
• Allow at least 6” (15 cm) clearance at the right side for proper air circulation and at least
12” (30 cm) clearance at top for ease of maintenance and/or service should they be
required.
• Location should provide a firm and level foundation for the equipment.
D. Setup
WARNING
The installer must ensure the dispenser unit/ice storage bin is compatible with the
icemaker, and the dispenser unit/ice storage bin and icemaker are properly attached
and secured.
NOTICE
Do not use the side frame to lift the icemaker. See Fig. 1. Lift the icemaker from the
base.
1a) Dispenser Unit: Follow the dispenser unit’s setup
procedure.
1b) Ice Storage Bin: Unpack the ice storage bin and
attach the 4 adjustable legs provided (bin accessory)
to the bottom of the ice storage bin.
2) Position the dispenser unit/ice storage bin in its
permanent location.
3) If required, install an adapter kit or top kit. Contact your
local Hoshizaki distributor for recommendations.
4) Level the dispenser unit/ice storage bin in both the
left-to-right and front-to-rear directions. If using an ice
storage bin, adjust the ice storage bin legs to level.
5) Place the icemaker on top of the dispenser unit/ice storage bin.
6a) Ice Storage Bin: Follow the ice storage bin, adapter kit, or top kit instructions for
securing the icemaker. If no instructions are available, secure the icemaker using the
2 mounting brackets and the bolts provided. See Fig. 2a.
Fig. 2a
Bin
Bolts
Mounting
Brackets
Icemaker

11
Fig. 3
Discharge
Hose
Float Switch
Connector
Pump Motor
Connector
Thumbscrews
Snap Tab
Pump Motor Bracket
Fig. 4
Float Switch
Pump Motor
Cube Guide Snap Tab
6b) Dispenser Unit: Follow the dispenser unit, adapter
kit, or top kit instructions for securing the icemaker.
If no instructions are available, secure the icemaker
using the mounting brackets provided. Rotate
the mounting brackets so that they fit flush to the
dispenser unit. See Fig. 2b. Secure the mounting
brackets to the icemaker with the bolts provided.
Secure the mounting brackets to the dispenser unit
with self-tapping screws (not provided). NOTICE!
Use care to avoid damage to dispenser unit
components when attaching the mounting
brackets.
Fig. 2b
Self-tapping screws
(not provided)
Bolts
Mounting
Brackets
Dispenser
Icemaker
E. Bin Control Installation
1)Remove the front panel, then
remove the front insulation.
2)Loosen the two thumbscrews
securing the pump motor bracket.
See Fig. 3.
3) Disconnect the discharge hose.
4)Disconnect the pump motor
connector and float switch
connector from the side of the
control box.
5) While pushing up the snap tab at
the right side of the pump motor
bracket, pull out the water tank,
cube guide, pump motor bracket,
pump motor and float switch
together. See Fig. 4.

12
6) Route the bin control lead through the hole in the base, then into the bushing provided.
See Fig. 5.
Fig. 6 Bin Control
Collars
Fig. 5
Bushing
Bin Control Lead
7) While pulling up the bin control
lead, hook the bin control on
the right side interior wall. Then
push the bin control up against
the bottom of the unit, and
slide to the back until it snaps
in place. Make sure the slotted
holes at the right side of the bin
control are securely placed on
the collars at the bottom of the
unit. See Fig. 6.
NOTICE
Make sure the bin control is securely in place. Otherwise, ice may get between gaps
and damage the bin control.
8) Pull up any slack in the bin control lead, then put the bushing attached to the bin
control lead back into the hole in the base.
9) Connect the bin control connector to the side of the control box.
10) Make sure the right and left deflectors are in their correct positions with the slotted
holes engaged on the collars. Make sure the right and left deflectors are secured with
the thumbscrews. See Fig. 7.

13
11) Replace the water tank, cube guide, pump motor bracket, pump motor and float switch
in their correct positions until they snap in place.
NOTICE
Be sure to let the discharge hose pass behind the copper tube and connect it securely
in position. See Fig. 3. Otherwise, the discharge hose may be caught in the front
insulation, leading to improper results.
12) Secure the pump motor bracket with the two thumbscrews.
13) Reconnect the pump motor connector and float switch connector.
14) Replace the front insulation and front panel in their correct positions.
Left Deflector Right Deflector Thumbscrew
Thumbscrew
Collars
Collars
(Behind Left Deflector) Fig. 7

14
F. Electrical Connection
WARNING
• Electrical connection must be hard-wired and must meet national, state, and local
electrical code requirements. Failure to meet these code requirements could result in
death, electric shock, serious injury, fire, or damage.
• The appliance requires an independent power supply of proper capacity. See the
nameplate for electrical specifications. Failure to use an independent power supply of
proper capacity can result in a tripped breaker, blown fuse, damage to existing wiring,
or component failure. This could lead to heat generation or fire.
• THE APPLIANCE MUST BE GROUNDED: Failure to properly ground the appliance
could result in death or serious injury.
• Electrical connection must be made in accordance with the instructions on the
“WARNING” tag, provided with the pig tail leads in the junction box. See Fig. 8.
• To reduce the risk of electric shock, do not touch the control switch with damp hands.
• Usually an electrical permit and services of a licensed
electrician are required.
• The maximum allowable voltage variation is ±10 percent
of the nameplate rating.
• The white lead must be connected to the neutral
conductor of the power source. NOTICE! Miswiring may
result in severe damage to the icemaker. See Fig. 8.
• The opening for the power supply connection is 7/8” DIA
to fit a 1/2” trade size conduit.
Fig. 8
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15
G. Water Supply and Drain Connections - See Fig. 9, 10 or 11
WARNING
Water supply and drain connections must be installed in accordance with applicable
national, state, and local regulations.
NOTICE
• Normal operating water temperature should be within 45°F to 90°F (7°C to 32°C).
Operation of the appliance, for extended periods, outside of this normal temperature
range may affect appliance performance.
• Water supply pressure must be a minimum of 10 PSIG and a maximum of 113 PSIG.
If the pressure exceeds 113 PSIG, the use of a pressure reducing valve is required.
• To prevent damage to the appliance, do not operate the appliance when the water
supply is off, or if the pressure is below 10 PSIG. Do not run the appliance until the
proper water pressure is reached.
• External filters, strainers, or softeners may be required depending on water quality.
Contact your local Hoshizaki Certified Service Representative or local Hoshizaki
distributor for recommendations.
• A plumbing permit and services of a licensed plumber may be required in some areas.
• The icemaker drain line, dispenser unit/storage bin drain line, and water-cooled
condenser drain line (if applicable) must be run separately.
• Drain lines must have 1/4” fall per foot (2 cm per 1 m) on horizontal runs to get a good
flow. Avented tee connection is also required for proper flow.
• Drain lines should not be piped directly to the sewer system. An air gap of a minimum of
2 vertical inches (5 cm) should be between the end of the drain pipes from the icemaker,
dispenser unit/storage bin, and water-cooled condenser (if applicable) and the floor drain.

16
1. Icemaker
Icemaker Water
Supply Inlet Minimum Icemaker Water Supply Line Size Icemaker Drain Outlet Minimum Icemaker Drain Line Size
1/2" Female Pipe
Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent 3/4" Female Pipe Thread (FPT) 3/4" Nominal ID Hard Pipe or Equivalent
• An icemaker water supply line shut-off valve and drain valve must be installed.
• Be sure there is sufficient extra water supply line and drain line for the appliance to be
pulled out for service.
Icemaker Water
Supply Inlet
1/2” FPT
Icemaker Drain
Outlet
3/4” FPT
Icemaker Water Supply Line
Shut-Off Valve
Icemaker Water Supply Line
Drain Valve
Bin Drain Outlet
3/4”FPT
Bin
2-inch
(5-cm)
air gap
Be sure there is sufficient extra
water supply line and drain line
for the appliance to be pulled
out for service.
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the drain.
Drain
Floor
KMD-410MAH
Fig. 9
Icemaker
Vent Tube
Vent Tube
Minimum 1/4” Nominal ID
Copper Water Tubing
Minimum 3/4” Nominal ID
Hard Pipe

17
2. Water-Cooled Condenser
a) Connection to an Open Drain System
Condenser Water
Supply Inlet Minimum Condenser Water Supply Line Size Condenser Drain Outlet Minimum Condenser Drain Line Size
1/2" Female Pipe
Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent 1/2" Female Pipe Thread (FPT) 1/4" Nominal ID Hard Pipe or Equivalent
• A condenser water supply line shut-off valve and drain valve must be installed.
• In some areas, a back flow preventer may be required in the cooling water circuit.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature must be in the 45°F to 90°F (7°C to 32°C) range.
KMD-410MWH
Connection to an Open Drain System
Fig. 10
Icemaker Water
Supply Inlet
1/2” FPT
Icemaker Drain
Outlet
3/4” FPT
Icemaker Water Supply Line
Shut-Off Valve
Icemaker Water Supply Line
Drain Valve
Bin Drain Outlet
3/4” FPT
Bin
Icemaker
Condenser Water
Supply Inlet
1/2” FPT
Condenser
Drain Outlet
1/2” FPT
Condenser Water Supply Line
Shut-Off Valve
Condenser Water Supply Line
Drain Valve
2-inch
(5-cm)
air gap
Drain
Floor
Minimum 1/4” Nominal ID
Copper Water Tubing
Minimum 1/4” Nominal ID
Hard Pipe
Minimum 3/4”
Nominal ID
Hard Pipe
Vent Tube Be sure there is sufficient extra
water supply line and drain line
for the appliance to be pulled
out for service.
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the drain.

18
b) Connection to a Closed Loop System
Condenser Water
Supply Inlet Minimum Condenser Water Supply Line Size Condenser Return Outlet Minimum Condenser Return Line Size
1/2" Female Pipe
Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent 1/2" Female Pipe Thread (FPT) 1/4" Nominal ID Copper Water Tubing or Equivalent
• Shut-off valves and drain valves must be installed at both the condenser water supply
inlet and condenser return outlet.
• Minimum water flow to the condenser is 4 GPM.
• The pressure differential between the condenser water supply inlet and condenser return
outlet must be no less than 10 PSIG.
• When using a glycol blend, the solution mixture should be less than 30% glycol.
• In order to maintain the proper high side pressure, the condenser water supply inlet
temperature must be in the 45°F to 90°F (7°C to 32°C) range.
KMD-410MWH
Connection to a Closed Loop System
Fig. 11
Icemaker Water
Supply Inlet
1/2” FPT
Icemaker Drain
Outlet
3/4” FPT
Icemaker Water Supply Line
Shut-Off Valve
Icemaker Water Supply Line
Drain Valve
Bin Drain Outlet
3/4” FPT
Bin
Icemaker
Condenser Water
Supply Inlet
1/2” FPT
Condenser
Return Outlet
1/2” FPT
Condenser Water Supply Line
Shut-Off Valve
Condenser Water Supply Line
Drain Valve
2-inch
(5-cm)
air gap
Drain
Floor
Minimum 1/4” Nominal ID
Copper Water Tubing
Minimum 3/4” Nominal ID
Hard Pipe
Vent Tube
Condenser Return Line
Shut-Off Valve
Condenser Return Line
Drain Valve
Be sure there is sufficient extra
water supply line and drain line
for the appliance to be pulled
out for service.
Separate piping to approved
drain. Leave a 2-inch (5-cm)
vertical air gap between the
end of each pipe and the drain.

19
H. Final Checklist
WARNING
CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after installation. Make sure that none have fallen into the dispenser
unit/ice storage bin.
1) Is the icemaker level?
2) Is the icemaker in a site where the ambient temperature is within 45°F to 100°F (7°C to
38°C) and the water temperature within 45°F to 90°F (7°C to 32°C) all year around?
3) Is there at least 6” (15 cm) clearance at the right side for proper air circulation and at
least 12” (30 cm) clearance at top for ease of maintenance and/or service?
4) Have all shipping cartons, tape, and packing material been removed from the
icemaker? Is the cube guide in the correct position?
5) Have all electrical and water connections been made? Do electrical and water
connections meet all national, state, and local code and regulation requirements?
6) Has the power supply voltage been checked or tested against the nameplate rating?
Has a proper ground been installed to the icemaker?
7) Are the water supply and drain lines sized as specified? Are the water supply line
shut-off valve(s) and drain valve(s) installed? Has the water supply pressure been
checked to ensure a minimum of 10 PSIG and a maximum of 113 PSIG?
8) Is the compressor snug on all mounting pads? Have the refrigerant lines been checked
to make sure they do not rub or touch other lines or surfaces? Has the fan blade (if
applicable) been checked to make sure it turns freely?
9) Are all components, fasteners, and thumbscrews securely in place?
10) Has the end user been given the instruction manual, and instructed on how to operate
the icemaker and the importance of the recommended periodic maintenance?
11) Has the end user been given the name and telephone number of an authorized service
agent?
12) Has the warranty card been filled out and forwarded to the factory for warranty
registration?