Hoshizaki KML-250 MWH, KML-351 MWH, KML-451 MWH, KML-631MWH, KML-631MRH Operator’s Manual

HoshizakiHoshizaki America, Inc.

Low-Profile Modular Crescent Cuber

Models

KML-250MAH, MWH

KML-351MAH, MWH

KML-451MAH, MWH

KML-631MAH, MWH, MRH

“A Superior Degree

of Reliability”

INSTRUCTION MANUAL

www.hoshizaki.com

Issued: 8-19-2013

Revised: 6-16-2015

WARNING

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 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]

HOSHIZAKI AMERICA, INC.

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.

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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. Specifications......................................................................................................................	6
A. Electrical and Refrigerant Data......................................................................................	6
1. KML-250M_H............................................................................................................	6
2. KML-351M_H...........................................................................................................	6
3. KML-451M_H...........................................................................................................	7
4. KML-631M_H...........................................................................................................	7
B. Dimensions/Connections...............................................................................................	8
1. Air-Cooled Models (MAH).........................................................................................	8
2. Water-Cooled Models (MWH)...................................................................................	9
3. Remote Models (MRH)...........................................................................................	10
4. Remote Condenser Unit URC-9F (use with KML-631MRH)...................................	11
II. Installation and Operating Instructions.............................................................................	12
A. Location.......................................................................................................................	12
B. Checks Before Installation...........................................................................................	12
C. How to Remove Panels................................................................................................	13
D. Setup...........................................................................................................................	14
E. Electrical Connection...................................................................................................	16
F. Water Supply and Drain Connections...........................................................................	18
1. Icemaker.................................................................................................................	19
2. Water-Cooled Condenser.......................................................................................	20
a) KML-250/351/451MWH.......................................................................................	20
b) KML-631MWH.....................................................................................................	22
G. Installation of Remote Condenser Unit........................................................................	24
1. Location..................................................................................................................	24
2. Checks Before Installation......................................................................................	25
3. Setup......................................................................................................................	25
4. Line Set Size and Refrigerant Charge....................................................................	25
5. Line Set Installation................................................................................................	26
6. Electrical Connection.............................................................................................	29
7. Stacking Remote Condenser Unit...........................................................................	30
H. Final Checklist.............................................................................................................	31
I. Startup..........................................................................................................................	32
III. Maintenance....................................................................................................................	33
A. Maintenance Schedule................................................................................................	33
B. Cleaning and Sanitizing Instructions............................................................................	34
1. Cleaning Procedure................................................................................................	34
2. Sanitizing Procedure - Following Cleaning Procedure............................................	35
IV. Preparing the Icemaker for Periods of Non-Use..............................................................	37
V. Disposal............................................................................................................................	39

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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 icemaker 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 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 touch the control switch or service 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, serious injury, fire, or damage.

•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.

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WARNING, continued

•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.

Additional Warning for Remote Models

•THE REMOTE CONDENSER UNIT MUST BE GROUNDED. The power supply and ground connection to the remote condenser unit are supplied from the icemaker. Failure to properly ground the remote condenser unit could result in death or serious injury.

•Wire 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, fire, or damage.

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 floor 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.

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I. Specifications

A. Electrical and Refrigerant Data

The rating label and nameplate provide electrical and refrigerant data. The rating label can be seen by removing the front panel. The nameplate is located on the rear panel. For certification marks, see the nameplate.

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

1. KML-250M_H

Model Number	KML-250AH	KML-250MWH
AC Supply Voltage	115/60/1	115/60/1
Compressor	115V 7.0RLA 33.6LRA	115V 6.7RLA 33.6LRA
Pump	120V 0.5FLA 23W	120V 0.5FLA 23W
Fan	115V 1.2FLA 25W	--- --- ---
Other	115-120V 0.2A	115-120V 0.2A
Maximum Fuse Size	20 AMPS	20 AMPS
Max. HACR Breaker	20 AMPS	20 AMPS
(USA Only)
Max. Circuit Breaker	20 AMPS	20 AMPS
(Canada Only)
Minimum Circuit	20 AMPS	20 AMPS
Ampacity
Design Pressure	HI-467PSI LO-230PSI	HI-427PSI LO-230PSI
Refrigerant	404A 1 LB. 2 OZ.	404A 14.1 OZ.
2. KML-351M_H

Model Number	KML-351MAH	KML-351MWH
AC Supply Voltage	115/60/1	115/60/1
Compressor	115V 6.1RLA 50LRA	115V 6.7RLA 33.6LRA
Pump	120V 0.5FLA 23W	120V 0.5FLA 23W
Fan	115V 0.85FLA 50W	--- --- ---
Other	115-120V 0.2A	115-120V 0.2A
Maximum Fuse Size	20 AMPS	20 AMPS
Max. HACR Breaker	20 AMPS	20 AMPS
(USA Only)
Max. Circuit Breaker	20 AMPS	20 AMPS
(Canada Only)
Minimum Circuit	20 AMPS	20 AMPS
Ampacity
Design Pressure	HI-467PSI LO-230PSI	HI-427PSI LO-230PSI
Refrigerant	404A 1 LB. 9.4 OZ.	404A 1 LB. 1.6 OZ.

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3. KML-451M_H

Model Number	KML-451MAH	KML-451MWH
AC Supply Voltage	115/60/1	115/60/1
Compressor	115-120V 7.9RLA 54.5LRA	115-120V 9.0RLA 70LRA
Pump	120V 0.5FLA 23W	120V 0.5FLA 23W
Fan	120V 0.85FLA 50W	--- --- ---
Other	115-120V 0.15A	115-120V 0.15A
Maximum Fuse Size	20 AMPS	20 AMPS
Max. HACR Breaker	20 AMPS	20 AMPS
(USA Only)
Max. Circuit Breaker	20 AMPS	20 AMPS
(Canada Only)
Minimum Circuit	20 AMPS	20 AMPS
Ampacity
Design Pressure	HI-467PSI LO-230PSI	HI-427PSI LO-230PSI
Refrigerant	404A 1 LB. 8.7 OZ.	404A 15.2 OZ.
4. KML-631M_H

Model Number	KML-631MAH	KML-631MWH	KML-631MRH
AC Supply Voltage	208-230/60/1 (3 Wire with	208-230/60/1 (3 Wire with	208-230/60/1 (3 Wire with
	Neutral)	Neutral)	Neutral)
Compressor	208-230V 6.9RLA 46LRA	208-230V 6.8RLA 46LRA	208-230V 6.4RLA 46LRA
Pump	120V 0.5FLA 23W	120V 0.5FLA 23W	120V 0.5FLA 23W
Fan	120V 0.85FLA 50W	--- --- ---	120V 3A MAX (Fan in URC)
Other	115-120V 0.15A	115-120V 0.15A	115-120V 0.15A
Maximum Fuse Size	20 AMPS	20 AMPS	20 AMPS
Max. HACR Breaker	20 AMPS	20 AMPS	20 AMPS
(USA Only)
Max. Circuit Breaker	20 AMPS	20 AMPS	20 AMPS
(Canada Only)
Minimum Circuit	20 AMPS	20 AMPS	20 AMPS
Ampacity
Design Pressure	HI-467PSI LO-230PSI	HI-427PSI LO-230PSI	HI-467PSI LO-230PSI
Refrigerant	404A 2 LB. 10.3 OZ.	404A 1 LB. 6.0 OZ.	404A
			Total Refrigerant Charge with
			Hoshizaki Remote Condenser
			Unit URC-9F: 11 LB. 7.4 OZ.

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B. Dimensions/Connections

1. Air-Cooled Models (MAH) Units: mm [in.]

Side

Model Shown: KML-451MAH

KML-250MAH KML-631MAH

KML-351MAH

KML-451MAH

A 559	[22]	659	[26]
B 515 [20-1/4]		615 [24-1/4]
C 505	[19-7/8]	605	[23-7/8]

NOTICE

•Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.

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

Rear

Model Shown: KML-451MAH

Bottom

Model Shown: KML-451MAH

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2. Water-Cooled Models (MWH)

Units: mm [in.]

Side

Model Shown: KML-451MWH

KML-250MWH KML-631MWH

KML-351MWH

KML-451MWH

A 559	[22]	659	[26]
B 515 [20-1/4]		615 [24-1/4]
C 505	[19-7/8]	605	[23-7/8]
D 403	[15-7/8]	504	[19-7/8]
E 55 [2-1/8]		-

NOTICE

•Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.

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

Rear

KML-250/351/451/MWH

Model Shown: KML-451MWH

Rear

KML-631MWH

Model Shown: KML-631MWH

Bottom

Model Shown: KML-451MWH

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3. Remote Models (MRH)

Units: mm [in.]

	Side		Rear
	Model Shown: KML-631MRH
	KML-631MRH		Model Shown: KML-631MRH
	A 659 [26]
	B 615 [24-1/4]		Bottom
	C 605 [23-7/8]
	D 448 [17-5/8]
	E 41	[1-5/8]
	F 63	[2-1/2]
	G 75	[3]
	NOTICE		Model Shown: KML-631MRH

•Allow 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.

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

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4. Remote Condenser Unit URC-9F (use with KML-631MRH)

Units: mm [in.]

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.

	URC-9F Heat of Rejection
Icemaker	AT 90°F (32°C)
Model	WT 70°F (21°C)
KML-631MRH	10,300 BTU/hr

Top

Rear

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II. Installation and Operating Instructions

WARNING

•The appliance 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

NOTICE

•The 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.

•The 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 6" (15 cm) clearance at rear, sides, and top for proper air circulation and ease of maintenance and/or service should they be required.

•The location should provide a firm and level foundation for the appliance.

B.Checks Before Installation

•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 shipping carton, tape, and packing material. If any are left in the appliance, it will not work properly.

•See the nameplate on the rear panel, and check that your voltage supplied corresponds with the voltage specified on the nameplate.

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

•Remove the package containing the accessories.

•Remove the protective plastic film from the panels. If the appliance is exposed to the sun or to heat, remove the film after the appliance cools.

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