Hoshizaki KMS1122MLJ User Manual

Instruction Manual

Modular Crescent Cuber
Serenity Series

Models
KMS-1122MLJ with SRK-12J/3

hoshizakiamerica.com

Issued: 11-20-2017
Revised: 3/20/2017

WARNING

Only qualied service technicians should install and service the appliance. To
obtain the name and phone number of your local Hoshizaki Certied 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 qualied service technicians in the
installation, maintenance, and service of the appliance.

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

Phone: [phone]
Fax: [phone]

E-mail: [e-mail]

618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department

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

Important Safety Information ................................................................................................. 4

I. Specications ...................................................................................................................... 6

A. Electrical and Refrigerant Data ..................................................................................... 6

1. KMS-1122MLJ .......................................................................................................... 6

2. SRK-12J/3 ............................................................................................................... 6

B. Dimensions/Connections .............................................................................................. 7

1. KMS-1122MLJ .......................................................................................................... 7

2. SRK-12J/3 ............................................................................................................... 8

II. Installation and Operating Instructions .............................................................................. 9

A. Location ........................................................................................................................ 9

1. Icemaker .................................................................................................................. 9

2. Remote Condensing Unit ....................................................................................... 10

B. Checks Before Installation ............................................................................................11

1. Icemaker .................................................................................................................11

2. Remote Condensing Unit ........................................................................................11

C. How to Remove Panels ............................................................................................... 12

1. Icemaker ................................................................................................................ 12

2. Remote Condensing Unit ....................................................................................... 12

D. Setup ........................................................................................................................... 13

1. Dispenser Unit/Ice Storage Bin and Icemaker Setup ............................................. 13

2. Bin Control ............................................................................................................. 15

E. Installation of the Remote Condensing Unit ................................................................ 16

1. Setup ...................................................................................................................... 16

2. Line Set ................................................................................................................. 16

3. Line Set Installation ............................................................................................... 17

F. Electrical Connection ................................................................................................... 19

G. Water Supply and Drain Connections ......................................................................... 22

H. Final Checklist ............................................................................................................. 24

I. Startup .......................................................................................................................... 25

III. Maintenance .................................................................................................................. 27

A. Maintenance Schedule ................................................................................................ 27

B. Cleaning and Sanitizing Instructions ........................................................................... 28

1. Cleaning Procedure ................................................................................................ 28

2. Sanitizing Procedure - Following Cleaning Procedure ........................................... 30

IV. Preparing the Appliance for Periods of Non-Use ............................................................ 31

V. Disposal ........................................................................................................................... 32

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

This 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 re, follow basic
precautions including the following:

• Only qualied service technicians should install and service the appliance.

• The appliance must be installed in accordance with applicable national, state, and
local codes and regulations.

• To reduce the risk of electric shock, do not touch the control switch or service switch
with damp hands.

• Move the control switch to the "OFF" position and turn off the power supply to
the remote condensing unit before servicing. Place the icemaker disconnect
(ifapplicable) in the "OFF" position. 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, re, or damage to the appliance.

• This 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 this 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 ammable substances near the
appliance. They might catch re.

• Keep the area around the appliance clean. Dirt, dust, or insects in the appliance
could cause harm to individuals or damage to the appliance.

4

WARNING, continued

Icemaker

• Do not connect the icemaker to an external power source. Icemaker power supply
and ground connection are supplied from the remote condensing unit via the wire
bundle provided with the remote condensing unit.

• Wire bundle routing (conduit) and disconnect (if required) must meet national, state,
and local electrical code requirements. Failure to meet these code requirements
could result in death, electric shock, serious injury, re, or damage.

• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.

Remote Condensing Unit

• Remote condensing unit 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, re, or damage.

• The remote condensing unit requires an independent power supply of proper
capacity. See the nameplate for electrical specications. 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 re.

• THE REMOTE CONDENSING UNIT MUST BE GROUNDED. Failure to properly
ground the remote condensing unit could result in death or serious injury.

NOTICE

• 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 oor
drain.

• Install the icemaker 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 icemaker on during extended periods of non-use, extended
absences, or in sub-freezing temperatures. To properly prepare the icemaker for
these occasions, follow the instructions in "IV. Preparing the Icemaker for Periods of
Non-Use."

• 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. Specications

A. Electrical and Refrigerant Data

The rating label (KMS) and nameplate (KMS and SRK) provide electrical and refrigerant
data. The rating label can be seen by removing the front panel. The nameplate is located
on the rear panel of the icemaker and on the side panel of the remote condensing unit.
Forcertication marks, see the nameplate.
We reserve the right to make changes in specications and design without prior notice.

1. KMS-1122MLJ

Model Number KMS-1122MLJ

AC Supply Voltage 115-120/60/1
Pump 120V 0.5FLA 23W
Other 115V 0.8A
Design Pressure HI-467PSI LO-230PSI
Total Refrigerant
Charge

2. SRK-12J/3

404A
Total Refrigerant Charge
with Hoshizaki Remote
Condensing Unit
SRK-12J/3: 15 LB. 14 OZ.

Model Number SRK-12J SRK-12J3

AC Supply Voltage 208-230/60/1 (3 wire with

neutral)
Compressor 230V 8.2RLA 56LRA 230V 7.5RLA 51.0LRA
Fan 115V 2.6FLA (total) 126W 115V 2.6FLA (total) 126W
Other 115V 0.4A 115V 0.4A
Maximum Fuse Size 20 AMPS 20 AMPS
Max. HACR Breaker
(USA Only)
Max. Circ. Breaker
(Canada Only)
Minimum Circuit
Ampacity
Design Pressure HI-467PSI LO-230PSI HI-467PSI LO-230PSI
Refrigerant 404A

20 AMPS 20 AMPS

20 AMPS 20 AMPS

20 AMPS 20 AMPS

Total Refrigerant Charge

with Hoshizaki Icemaker

KMS-1122MLJ:

15 LB. 14 OZ.

208-230/60/3

404A
Total Refrigerant Charge
with Hoshizaki Icemaker
KMS-1122MLJ:
15 LB. 14 OZ.

6

B. Dimensions/Connections

[ 2 - 5/8 ]

1. KMS-1122MLJ

Side

Units: mm [in.]

Rear

NOTICE

• Allow 15" (38 cm) clearance on
leftside for removal of spray tube and
cube guide. There is no minimum
clearance required for proper
operation.

• The storage bin opening must
match the bottom opening as in the
illustration.

355

66

[ 14 ]

128
[ 5 ]

Bottom

182
[ 7 - 3/16 ]

ICE DROP
OPENING

7

2. SRK-12J/3

Side

Units: mm [in.]

Top

Front

NOTICE

Allow 24" (61cm) clearance at front
and rear for proper air circulation and
ease of maintenance and/or service
should they be required.

Note: Legs are included with remote condensing

unit. Leg height is 380 mm (14.96 in.).

Heat of Rejection

AT 90°F (32°C)

Model

KMS-1122MLJ
with SRK-12J
KMS-1122MLJ
with SRK-12J3

WT 70°F (21°C)
18,800 BTU/hr

19,600 BTU/hr

8

II. Installation and Operating Instructions

WARNING

• The icemaker and remote condensing unit must be installed in accordance with

applicable national, state, and local codes and regulations.

• 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.

• 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.

A. Location

1. Icemaker

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 if the air temperature is going to go
below 32°F (0°C). See "IV. Preparing the Icemaker for Periods of Non-Use."

• The icemaker should not be located next to ovens, grills, or other high heat producing
equipment.

• Allow 15" (38 cm) clearance on leftside for removal of spray tube and cube guide. There is
no minimum clearance required for proper operation.

• The location must provide a rm and level foundation for the equipment.

9

2. Remote Condensing Unit

NOTICE

• The remote condensing unit is intended for outdoor use. Normal operating ambient
temperature must be within -20°F to 122°F (-29°C to 50°C). Operation of the
remote condensing unit, for extended periods, outside of this normal temperature
range may affect performance.

• The maximum line set length is 66' (20 m). No refrigerant charge adjustment is
necessary.

• The maximum vertical distance between the remote condensing unit and icemaker
is 33' (10 m) above or 10' (3 m) below the icemaker. These distances are measured
tting to tting. See Fig. 1.

• If the vertical distance between the remote condensing unit and the icemaker
is greater than 20' (6 m) (not to exceed 33' (10 m)), an "S" oil-trap (5/8"OD
copper tubing) must be installed in the suction line. The "S" oil-trap must be
located halfway between the icemaker and remote condensing unit. This ensures
sufficient oil return to the compressor.

The remote condensing unit must be positioned in a permanent site under the following
guidelines:

• A rm and at site.

• A dry and well ventilated area with 24" (61 cm) clearance in both front and rear for proper
air circulation and ease of maintenance and/or service should they be required. See Fig. 2.

Icemaker

Max.

16.5'
(5 m)

Max.

16.5'

Max. 33' (10 m)

(5 m)

Service Loop

Remote
Condensing
Unit

Suction Line
"S" Oil-Trap

Icemaker

Ice
Storage
Bin

Service Loop

Max. 10' (3 m)

Remote
Condensing
Unit

Ice
Storage
Bin

Min. 24" (61 cm) Clearance

24"

(61 cm)

Air

24"

(61 cm)

Air

Fig. 2

Fig. 1

10

B. Checks Before Installation

• Visually inspect the exterior of the shipping containers and immediately report any
damage to the carrier. Upon opening the containers, any concealed damage should
also be immediately reported to the carrier.

• Remove the shipping carton, tape, and packing material. If any are left in the icemaker
or remote condensing unit, they will not work properly.

1. Icemaker

• Remove the panels to prevent damage when installing the icemaker. See "II.C. How to
Remove Panels."

• Remove the package containing the accessories.

• Remove the protective plastic lm from the panels. If the icemaker is exposed to the sun
or to heat, remove the lm after the icemaker cools.

• Check that the refrigerant lines do not rub or touch lines or other surfaces.

• This icemaker can be installed on a dispenser unit or ice storage bin 22" wide or wider.
Foroptions, contact your local Hoshizaki distributor.

• NOTICE! This icemaker is designed for connection to Hoshizaki Remote

Condensing Unit Model SRK-12J or SRK-12J3 only! Connection to another
remote condensing unit will void the warranty.

2. Remote Condensing Unit

• See the nameplate on the remote condensing unit. Check that your voltage supplied
corresponds with the voltage specied on the nameplate.

• Remove the panels to prevent damage when installing the remote condensing unit.
See"II.C. How to Remove Panels."

• Remove the package containing the accessories.

• Check that the refrigerant lines do not rub or touch lines or other surfaces, and that the
fan blades turn freely.

• Check that the compressor is snug on all mounting pads.

11

C. How to Remove Panels

1. Icemaker

• Front Panel: Loosen the screw. Lift up and towards you.

• Apron Panel: Loosen the screws. Lift off.

• Top Panel: Lift off.

Side Insulation Panel

Top Panel

Top Insulation Panel

• Left and Right Side Panels: Remove
the screws. Push rearward slightly and
lift off.

• Side Insulation Panel: Lift up slightly
and pull towards you.

• Top Insulation Panel: Lift off.

2. Remote Condensing Unit

• Top Panel: Remove the screws and lift off.

• Front Panel: Remove the screws and lift off.

• Left Side/Rear Panel: Remove the screws and lift off.

• Louver Panel: Remove the screws and lift off.

• Right Side Panel: Remove the screws and lift off.

Left Side
Panel

Apron Panel

Front Panel

Icemaker

Right Side Panel

Fig. 3

Top Panel

Left Side/Rear Panel

Front Panel

Remote Condensing Unit

12

Right Side Panel

Louver Panel

Fig. 4

D. Setup

1. Dispenser Unit/Ice Storage Bin and Icemaker 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 connect the icemaker to an external power source. Icemaker power supply
and ground connection are supplied from the remote condensing unit via the wire
bundle provided with the remote condensing unit. For details, see "II.F. Electrical
Connection."

• Before operating the icemaker, the bin control must be installed correctly. Failure
to properly install the bin control could result in ice backup and unit damage.

1) If mounting the icemaker on top of a dispenser unit, follow the dispenser unit's setup
procedure. If mounting the icemaker on top of an 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) Dispenser Unit: Follow the dispenser unit's instructions for securing the icemaker to

the dispenser unit. If no instructions are available, secure the icemaker to the dispenser
unit using the mounting brackets provided. If the installation requires the dispenser unit
to extend 2 inches beyond the back of the icemaker, use the offset mounting brackets.
See Fig. 5a. If the icemaker is ush with the back of the dispenser, use the standard
mounting brackets and rotate them so that they t ush to the icemaker and dispenser
unit. Secure the mounting brackets to the icemaker with the machine bolts provided.
Secure the mounting brackets to the dispenser unit with the self-tapping bolts provided.

NOTICE! Use care to avoid damage to dispenser unit components when attaching
the mounting brackets.

6b) Ice Storage Bin: Secure the icemaker to the ice storage bin using the standard

mounting brackets and the machine bolts provided. See Fig.5b.

13

Dispenser Unit Application Ice Storage Bin Application

2" (51 mm) Offset Mount Flush Mount

2" (51mm)
Offset
Mounting
Brackets

Bolts

Self-Tapping
Bolts

Icemaker

Dispenser
Unit

Standard
Mounting
Brackets

Bolts

Self-Tapping
Bolts

Fig. 5a

Icemaker

Dispenser
Unit

Icemaker

Standard
Mounting
Brackets

Bolts

Ice
Storage
Bin

Fig. 5b

14

2. Bin Control

NOTICE

Before operating the icemaker, the bin control assembly must be installed correctly.
Failure to properly install the bin control assembly could result in ice backup and
unit damage.

1) Remove the bin control insulation and bin control cover. See Fig. 6.

2) Remove the bin control bracket, bin control bulb holder, two 4×6 screws, twolock
washers, twoat washers, 3 wire ties, and two 4×8 screws from the accessory bag.

3) Secure the bin control bracket to the bin control cover using the two 4×6 screws,
twolock washers, and twoat washers.

4) The bin control bulb is located under the control box. Route the bin control bulb and
protective hose through the hole in the bin control bracket as illustrated. NOTICE! Be
careful not to kink the bin control capillary tube.

5) Carefully install the bin control bulb into the bin control bulb holder, then secure the bin
control bulb holder to the bin control bracket using the two 4×8 screws. NOTICE! Place

the bin control capillary tube and protective hose outside the ange on the bin
control bracket and secure with 3 wire ties. This helps protect the capillary tube.

6) Lower the bin control assembly into position, then secure the bin control cover with
2thumbscrews.

7) Replace the bin control insulation in its proper position.

Bin Control
Cover

Slot

Hole

Wire Tie

4×8 Screw

Bin Control
Insulation

4×6 Screw
Lock Washer
Flat Washer

Bin Control
Capillary Tube

Protective

Hose
Bin Control Bracket, Two 4×6
Screws, TwoLock Washers,
and TwoFlat Washers from
Accessory Bag

Bin Control Capillary
Tube and Protective
Hose Placed Just
Outside Flange on Bin
Control Bracket

Control Box

Bin Control Bulb

Bin Control Bulb Holder and
Two 4×8 Screws from Accessory Bag

15

Fig. 6

E. Installation of the Remote Condensing Unit

WARNING

• Installation must be performed by properly trained and EPA-certied service
personnel.

• Power supply and ground wire to the icemaker are supplied from the remote
condensing unit. For details, see "II.F. Electrical Connection."

1. Setup

1) Secure the legs to the remote condensing
unit with the 8 bolts and nuts provided.
See Fig. 7.

2) The legs have 8 mounting holes. Secure
the legs with 8 bolts (not included).

Bolt with
Split Lock
Washer and
Flat Washer

Fig. 7

Nut

2. Line Set

NOTICE

The icemaker, remote condensing unit, and line set must contain the same type
of refrigerant. Mixing of refrigerants will result in improper operation and possible
damage to equipment.

• The maximum line set length is 66 feet and no refrigerant charge adjustment is necessary.

NOTICE! Do not exceed maximum line set length.

Line Set Size and Length for SRK-12J/3 Remote Condensing Units

Liquid

Model

KMS-1122MLJ 1/2" OD 5/8" OD 25, 35, and 55 66

Line

Suction

Line

• The maximum vertical distance between the remote condensing unit and icemaker is
33feet above or 10 feet below the icemaker. These distances are measured tting to tting.
See Fig. 8. NOTICE! Do not exceed maximum vertical distance.

Line Set

Lengths (ft) Maximum Line Set Length (ft)

• If the vertical distance between the remote condensing unit and the icemaker is greater
than 20 feet (not to exceed 33 feet), an "S" oil-trap (5/8" OD tubing) must be installed
in the suction line. The "S" oil-trap must be located halfway between the icemaker and
remote condensing unit. This ensures sufficient oil return to the compressor.

16

3. Line Set Installation

WARNING

• R-404A itself is not ammable at atmospheric pressure and temperatures up to
176°F (80°C).

• R-404A itself is not explosive or poisonous. However, when exposed to high
temperatures (open ames), R-404A can be decomposed to form hydrouoric
acid and carbonyl uoride both of which are hazardous.

• Do not use silver alloy or copper alloy containing arsenic.

• Do not open any service valve until the line set installation is complete and leak
tested.

• Ensure that there are no unnecessary traps and no kinks in the line set.

• Do not coil extra line set.

• Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the line set tubing through the service valve access ports (if using
an electronic leak detector), and then raise the pressure using nitrogen gas (140
PSIG). Do not use R-404A as a mixture with pressurized air for leak testing.

1) Route the factory line set or appropriate size copper tubing. When eld fabricating,
insulate the copper tubes separately. Leave a service loop behind the icemaker to
allow the icemaker to be pulled out for service. See Fig. 8. Note: The service loop is not
considered an oil trap.

2) Remove any extra line set length.

3) NOTICE! Before brazing, remove the Schrader valve cores from the service valve

access ports. When brazing, protect the service valve by using a wet cloth to
prevent the service valve from overheating.

4) Braze the line set to the icemaker service valves rst, then to the remote condensing
unit service valves.

5) Allow the service valves to cool, then replace the Schrader valve cores.

6) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the line set tubing through the service valve access ports (if using an
electronic leak detector), and then raise the pressure using nitrogen gas (140 PSIG).
WARNING! Do not use R-404A as a mixture with pressurized air for leak testing.

7) Attach the gauge manifold hoses to the service valve access ports and evacuate the
line set tubing. Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating
period depends on pump capacity. Next, charge each line set tube with R-404A vapor
to a pressure of 15 to 30 PSIG.

8) Close both gauge manifold valves.

9) Disconnect the gauge manifold hoses.

10) Replace the access port caps and tighten.

11) Open the icemaker service valves rst, then open the remote condensing unit service
valves.

17

12) Replace the service valve caps and tighten.

13) Insulate all exposed tubing and ttings.
Hoshizaki Technical Support is available at 1-800-233-1940 for recommendations.

Remote Condensing Unit

1/2" OD
Liquid Line
(insulated)

Max.

16.5'
(5 m)

Icemaker

Max. 33' (10 m)

Max.

16.5'
(5 m)

5/8" OD Suction Line
(insulated)

Service Loop

Suction Line
"S" Oil-Trap

1/2" OD
Liquid Line
(insulated)

Icemaker

Ice
Storage
Bin

Service
Loop

Max. 10' (3 m)

Remote Condensing Unit

Ice
Storage
Bin

5/8" OD Suction Line
(insulated)

Fig. 8

18

F. Electrical Connection

WARNING

Icemaker

• Donot connect the icemaker to an external power source. Icemaker power supply
and ground connection are supplied from the remote condensing unit via the wire
bundle provided with the remote condensing unit.

• Wire bundle routing (conduit) and disconnect (if required) must meet national, state,
and local electrical code requirements. If fabricating a wire bundle, use wire of an
appropriate gage and outdoor rating. Failure to meet these code requirements could
result in death, electric shock, serious injury, re, or damage.

• THE ICEMAKER MUST BE GROUNDED. Failure to properly ground the icemaker
could result in death or serious injury.

• To reduce the risk of electric shock, do not connect the remote condensing unit
power supply until after all wire bundle connections have been made.

Remote Condensing Unit

• Remote condensing unit 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, re, or damage.

• The remote condensing unit requires an independent power supply of proper
capacity. See the nameplate for electrical specications. 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 re.

• THE REMOTE CONDENSING UNIT MUST BE GROUNDED. Failure to properly
ground the remote condensing unit could result in death or serious injury.

• Remote condensing unit electrical connection must be made in accordance with
the instructions on the "WARNING" tag provided with the pig tail leads in the
remote condensing unit's power supply junction box. See Fig. 9.

NOTICE

The remote condensing unit must have power for a minimum of 4 hours prior to
startup to prevent compressor damage.

• 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 openings for the power supply and wire bundle connections are 7/8" DIA to t a
1/2" trade size conduit.

19

1) Route the wire bundle between the icemaker and remote condensing unit. Use the

WARNING

208-230

V

wire bundle supplied with the remote condensing unit, or fabricate a wire bundle using
wire of an appropriate gage and outdoor rating. Use the wiring label or Fig. 10 as a
reference.

2a) Icemaker: Connect the wire bundle ground wire to the icemaker ground screw, then

connect the rest of the wire bundle wires to the icemaker terminal block.

WARNING! Do not connect the wire bundle ground wire to the icemaker terminal
block.

2b) Remote Condensing Unit: Connect the wire bundle ground wire to the remote

condensing unit ground screw (located next to the terminal block).

WARNING! Do not connect the wire bundle ground wire to the remote
condensing unit terminal block.

3) Connect the power supply from the disconnect or electrical panel to the leads in
the remote condensing unit's power supply junction box. This differs from KM style
installations. Connect a ground wire to the ground screw. See Fig. 10.

• On single phase models, the white lead must be connected to the neutral conductor
of the power source. NOTICE! Miswiring may result in severe damage to the

icemaker.

• On three phase models, the transformer’s voltage tap switch must be positioned to
match incoming voltage at startup.

• NOTICE! On three phase models, connect the highest incoming voltage

4) Replace all removed parts and panels in their correct positions.

5) Turn on the power supply to the remote condensing unit. NOTICE! The remote

condensing unit must have power for a minimum of 4hours prior to startup to
prevent compressor damage.

supply ("stinger leg") to the power wire dedicated to the compressor. See the
wiring label on the remote condensing unit.

SRK-12J SRK-12J3

WARNING

ELECTRICAL CONNECTION

THIS UNIT MUST BE GROUNDED

Failure to properly ground or wire
this unit could result in death,
serious injury, or severe damage
to the icemaker. The white lead
must be connected to the neutral
conductor of the power source.
See diagram below.

208-230/60/1

(3 wire with neutral for 115V)

JUNCTION BOX

L1

BLACK

15­1

120V

N

WHITE

L2

BROWN

ELECTRICAL CONNECTION

THIS UNIT MUST BE GROUNDED

Failure to properly ground or wire
this unit could result in death,
serious injury, or severe damage to
the icemaker.
This unit must be connected to a
three-phase power source.
The transformer’s voltage tap switch
must be positioned to match incoming
voltage at startup.
See diagram below.

208-230/60/3

V

208-

230V

208-230

208-

230V

L1

L2

L3

JUNCTION BOX

BLACK

BROWN

RED

Fig. 9

20

Fig. 10

W

W

BK

P BK

V

V P

BR

Neutral

LLV

HGV

CB

KMS Icemaker

GR

BR

Fuse 10A

GND

GND

Wire Color Code:

Legend:

BK- black

BR- brown

GND-ground

HGV- hot gas valve

GR-green

P- pink

CB- control board

LLV- liquid line valve

V- violet

W- white

Icemaker-Remote Condensing Unit Wire Bundle Connections

Use wire bundle supplied with the Remote Condensing Unit or fabricate

a wire bundle using wire of an appropriate gage and outdoor rating.

GR

W

SRK Remote Condensing Unit

BK

P

V

BR

21

Neutral

BK W

LLV

P

HGV

Contactor

BR V

Fuse 10A

G. Water Supply and Drain Connections
See Fig. 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 icemaker, for extended periods, outside of this normal
temperature range may affect performance.

• To prevent damage to equipment, do not operate the icemaker when the water
supply is off, or if the pressure is below 10 PSIG. Do not run the icemaker until the
proper water pressure is reached.

• A plumbing permit and services of a licensed plumber may be required in some areas.

• External lters, strainers, or softeners may be required depending on water quality. Contact
your local Hoshizaki distributor for recommendations.

• 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.

• The icemaker drain line and dispenser unit/ice storage bin drain line 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
ow. A vented tee connection is also required for proper ow.

• 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
and dispenser unit/ice storage bin and the oor drain.

22

1. Icemaker

Icemaker Water
Supply Inlet

1/2" Female Pipe
Thread (FPT)

Minimum Icemaker
Water Supply Line Size

3/8" Nominal ID
Copper Water Tubing or
Equivalent

Icemaker Drain
Outlet

3/4" Female Pipe
Thread (FPT)

Minimum Icemaker
Drain Line Size

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

Icemaker Drain
Outlet 3/4" FPT

Icemaker Water
Supply Inlet
1/2" FPT

Minimum 3/8" Nominal ID Copper
Water Tubing or Equivalent

Shut-Off Valve

Ice
Storage
Bin

Vent Tube

Minimum 3/4" Nominal ID Hard Pipe
or Equivalent

KMS-1122MLJ

Fig. 11

Drain Valve

Bin Drain Outlet
3/4" FPT

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
two-inch (5 cm) vertical air
gap between the end of
each pipe and the drain.

2-inch (5-cm)
air gap

Floor

Drain

23

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 15" (38 cm) clearance on left side for removal of the spray tube and
cube guide?

4) Is the remote condensing unit in a site where the ambient temperature is within -20°F to
122°F (-29°C to 50°C) all year around?

5) Is there at least 24" (61 cm) clearance around the remote condensing unit for proper air
circulation and ease of maintenance and service?

6) Have the shipping carton, tape, and packing material been removed from the icemaker
and remote condensing unit? Is the cube guide in its correct position?

7) Has the bin control assembly been properly installed?

8) Have all electrical and water connections been made? Do electrical and water
connections meet all national, state, and local code and regulation requirements?

9) Has the power supply voltage been checked or tested against the nameplate rating?
Has a proper ground been installed to the remote condensing unit and icemaker unit?
On three phase models, has the transformer's voltage tap switch been positioned to
match incoming voltage? For details, see "II.F. Electrical Connection."

10) Has the electrical power supply been on to the remote condensing unit for a minimum of
4 hours?

11) Are the water supply and drain lines sized as specied? Are the water supply line
shut-off valve and drain valve installed? Has the water supply pressure been checked to
ensure a minimum of 10 PSIG and a maximum of 113 PSIG?

12) Are the compressor hold-down bolts snug? Have the refrigerant lines been checked to
make sure they do not rub or touch other lines or surfaces? Have the fan blades been
checked to make sure they turn freely?

13) Is the line set free of leaks and kinks? If needed, has an "S" oil-trap been installed?

14) Are all components, fasteners, and thumbscrews securely in place?

15) 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?

16) Has the end user been given the name and telephone number of an authorized service
agent?

17) Has the warranty card been lled out and forwarded to the factory for warranty
registration?

24

I. Startup

WARNING

All parts are factory-adjusted. Improper adjustments may adversely affect safety,
performance, component life, and warranty coverage.

NOTICE

• If the appliance is turned off, wait for at least 3 minutes before restarting the
appliance to prevent damage to the compressor.

• To prevent damage to the water pump, do not leave the control switch in the
"SERVICE" position when the water tank is empty.

• At startup, conrm that all internal and external connections are free of leaks.

• The remote condensing unit must have power for a minimum of 4 hours prior to
startup to prevent compressor damage.

1) If removed, replace all panels except the front panel in their correct positions. If not
already removed, remove the front panel.

2) Open the water supply line shut-off valve.

3) Move the control switch to the "ICE" position. See Fig. 12. Replace the front panel in its
correct position.

4) Turn on the power supply, and allow the water tank to ll and the icemaker to operate for
a total of 10 minutes.

5) Move the control switch to the "OFF" position, then turn off the power supply.

6) Remove the front, apron, top, left side, and side insulation panels.

7) Remove the drain plug. Allow the water tank to drain.

Service Switch

Fig. 12

Control Switch

Drain Plug

25

8) Replace the drain plug in its correct position. Be careful not to cross thread the drain
plug.

9) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.

10) Move the control switch to the "ICE" position.

11) Replace the side insulation, left side, top, apron, and front panels in their correct
positions.

12) Turn on the power supply to start the automatic icemaking process.

13) To conrm bin control operation, hold ice in contact with the bin control thermostat bulb.
If the icemaker does not stop within 10seconds, the bin control thermostat must be
adjusted. Installations at higher altitude locations are more likely to require adjustment.

26

III. Maintenance

The icemaker must be maintained in accordance with the instruction manual and
labels provided with the icemaker. Consult with your local Hoshizaki Certied Service
Representative about maintenance service.

WARNING

• Only qualied service technicians should service the icemaker.

• To reduce the risk of electric shock, do not touch the control switch or service switch
with damp hands.

• Move the control switch to the "OFF" position and turn off the power supply to
the remote condensing unit before servicing. Place the icemaker disconnect
(ifapplicable) in the off position. Lockout/Tagout to prevent the power supply from
being turned back on inadvertently.

• CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are
securely in place after any maintenance is done to the icemaker. Make sure that
none have fallen into the dispenser unit/ice storage bin.

A. Maintenance Schedule

The maintenance schedule below is a guideline. More frequent maintenance may be
required depending on water quality, the icemaker's environment, and local sanitation
regulations.

Maintenance Schedule

Frequency Area Task

Daily Scoop Clean the ice scoop using a neutral cleaner. Rinse thoroughly after

cleaning.

Monthly External Water

Filters
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a

Yearly Icemaker and

Dispenser Unit/Ice
Storage Bin Liner

Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water

Condenser Inspect. Clean if necessary by using a brush or vacuum cleaner. More

Water Hoses Inspect the water hoses and clean/replace if necessary.

Check for proper pressure and change if necessary.

neutral cleaner to wipe off oil or dirt build up. Clean any chlorine staining
(rust colored spots) using a non-abrasive cleanser.

Clean and sanitize per the cleaning and sanitizing instructions provided
in this manual. See "III.B. Cleaning and Sanitizing Instructions."

system. Clean the water supply inlet screen.

frequent cleaning may be required depending on location.

27

B. Cleaning and Sanitizing Instructions

The icemaker must be cleaned and sanitized at least once a year. More frequent
cleaning and sanitizing may be required in some water conditions.

WARNING

• To prevent injury to individuals and damage to the icemaker, do not use ammonia
type cleaners.

• Carefully follow any instructions provided with the bottles of cleaning and
sanitizing solution.

• Always wear liquid-proof gloves and goggles to prevent the cleaning and sanitizing
solutions from coming into contact with skin or eyes.

NOTICE

To prevent damage to the water pump, do not leave the control switch in the
"SERVICE" position for extended periods when the water tank is empty.

1. Cleaning Procedure

1) Dilute 27 . oz. (800 ml) of Hoshizaki "Scale Away" with 5 gal. (19 l) of warm water.

2) Remove all ice from the evaporator and the dispenser unit/ice storage bin.
Note: To remove cubes on the evaporator, turn off the power supply and turn it back on

after 3 minutes. The harvest cycle starts and the cubes will be removed from the
evaporator.

3) Turn off the power supply.

4) Remove the front panel, then move the control switch to the "SERVICE" position. Move
the service switch to the "DRAIN" position.

5) Replace the front panel in its correct position, then turn on the power supply for
2 minutes to drain the water tank.

6) Turn off the power supply.

7) Remove the front, apron, top, left side, and side insulation panels. See Fig. 13.

Top Panel

Side Insulation Panel

Left Side
Panel

Fig. 13

Float Switch
Assembly

Front Panel

28

Apron Panel

8) In bad or severe water conditions, clean the oat switch as described below. Otherwise,
continue to step 9.

a. Remove the oat switch assembly.
b. Remove the retainer rod from the bottom of the oat switch housing, then remove

the oat. Be careful not to bend the retainer rod excessively when removing it.

c. Wipe down the oat switch assembly's housing, shaft, oat, and retainer rod with

cleaning solution. Rinse the parts thoroughly with clean water.

d. Reassemble the oat switch assembly and replace it in its correct position.

9) Pour the cleaning solution into the water tank.

10) Move the service switch to the "WASH" position.

11) Replace the side insulation, left side, top, apron, and front panels in their correct
positions.

12) Turn on the power supply to start the cleaning process.

13) Turn off the power supply after 30 minutes. Remove the front panel.

14) Move the service switch to the "DRAIN" position.

15) Replace the front panel in its correct position, then turn on the power supply for
2 minutes to drain the water tank.

16) Turn off the power supply, then remove the front panel.

17) Move the control switch to the "ICE" position.

18) Replace the front panel in its correct position, then turn on the power supply for
3minutes to ll the water tank.

19) Turn off the power supply, then remove the front panel.

20) Move the control switch to the "SERVICE" position, then move the service switch to the
"WASH" position.

21) Replace the front panel in its correct position, then turn on the power supply for
5minutes to rinse off the cleaning solution.

22) Turn off the power supply, then remove the front panel.

23) Move the service switch to the "DRAIN" position.

24) Replace the front panel in its correct position, then turn on the power supply for
2 minutes to drain the water tank.

25) Turn off the power supply, then remove the front panel.

26) Repeat steps 17 through 25 three more times to rinse thoroughly.
Note: If you do not sanitize the icemaker, go to step 13 in "III.B.2. Sanitizing Procedure."

29

2. Sanitizing Procedure - Following Cleaning Procedure

1) Dilute 2.5 . oz. (74 ml or 5 tbs) of a 5.25% sodium hypochlorite solution (chlorine
bleach) with 5 gal. (19 l) of warm water.

2) Remove the front, apron, top, left side, and side insulation panels if they are in their
normal positions.

3) Pour the sanitizing solution into the water tank.

4) Move the service switch to the "WASH" position.

5) Replace the side insulation, left side, top, apron, and front panels in their correct
positions.

6) Turn on the power supply to start the sanitizing process.

7) Turn off the power supply after 15 minutes. Remove the front panel.

8) Move the service switch to the "DRAIN" position.

9) Replace the front panel in its correct position, then turn on the power supply for
2 minutes to drain the water tank.

10) Turn off the power supply, then remove the front panel.

11) Repeat steps 17 through 25 in "III.B.1. Cleaning Procedure" two times to rinse
thoroughly.

12) Repeat steps 1 through 11 two more times.

13) Move the control switch to the "ICE" position.

14) Replace the front panel in its correct position.

15) Clean the dispenser unit/ice storage bin liner using a neutral cleaner. Rinse thoroughly
after cleaning.

16) Turn on the power supply to start the automatic icemaking process.

30

IV. Preparing the Appliance for Periods of Non-Use

NOTICE

• When storing the icemaker for an extended time or in sub-freezing temperatures,
follow the instructions below to prevent damage.

• To prevent damage to the water pump, do not leave the control switch in the
"SERVICE" position for extended periods when the water tank is empty.

When the appliance is not used for two or three days under normal conditions, it is sufficient
to move the control switch to the "OFF" position. When storing the appliance for an
extended time or in sub-freezing temperatures, follow the instructions below.

1. Remove the water from the icemaker water line:

1) Turn off the power supply, then remove the front panel.

2) Close the icemaker water supply line shut-off valve and open the icemaker water supply
line drain valve.

3) Allow the line to drain by gravity.

4) Attach a compressed air or carbon dioxide supply to the icemaker water supply line
drain valve.

5) Make sure at least 3 minutes have elapsed since you turned off the power supply. Make
sure the control switch is in the "ICE" position. Replace the front panel in its correct
position, then turn on the power supply.

6) Blow the icemaker water supply line out using the compressed air or carbon dioxide
supply.

7) Close the icemaker water supply line drain valve.

2. Remove the water from the water tank:

1) Turn off the power supply.

2) Remove the front, apron, top, left side, and side insulation panels.

3) Move the control switch to the "OFF" position.

4) Remove the drain plug. See Fig. 12. Allow the water tank to drain.

5) Replace the drain plug in its correct position. Be careful not to cross thread the drain
plug.

6) Replace the side insulation, left side, top, apron, and front panels in their correct
positions.

7) Remove all ice from the dispenser unit/ice storage bin. Clean the dispenser unit/ice
storage bin using a neutral cleaner. Rinse thoroughly after cleaning.

31

V. Disposal

The appliance contains refrigerant and must be disposed of in accordance with
applicable national, state, and local codes and regulations. Refrigerant must be
recovered by properly certied service personnel.

32

618 Hwy. 74 South, Peachtree City, GA 30269 USA (P) 770.487.2331 (F) 770.487.3360 hoshizakiamerica.com 1A4873-011

33