Hoshizaki RIR1SSB, RH1SSEHS, FH1SSB, PTR1SSEHGHG, RFH3SSBHD Instruction Manual

Instruction Manual

Professional Series
Refrigerated Kitchen Equipment

Models
Reach-In
Roll-In
Pass-Thru
Roll-Thru

hoshizakiamerica.com

Issued: 11-3-2009
Revised: 9-21-2016

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 may adversely affect safety,
performance, component life, and warranty coverage. 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]

HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department

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 booklet carefully as
they provide essential information for the continued safe use and maintenance of
the appliance. Retain this booklet for any further reference that may be necessary.

CONTENTS

Important Safety Information ................................................................................................. 5

I. Installation Instructions ....................................................................................................... 8

A. Location ........................................................................................................................ 8

B. Checks Before Installation ............................................................................................. 8

C. Setup ............................................................................................................................. 9

1. Remove the Appliance from the Pallet ..................................................................... 9

2. Optional Overow Pan Installation (if applicable) .................................................... 9

a) Reach-In Optional Overow Pan (HS-3521) ...................................................... 9

b) Pass-Thru Optional Overow Pan (HS-3560) .................................................... 9

3. RFH1-SSB(-HS)(-HSE) Reservoir Assembly Installation ....................................... 10

D. Electrical Connection .................................................................................................. 14

E. Front Panel .................................................................................................................. 15

F. Door Reversal .............................................................................................................. 16

G. Final Checklist ............................................................................................................ 16

II. Operating Instructions ...................................................................................................... 17

A. Important Notes About Usage .................................................................................... 17

B. Startup ........................................................................................................................ 19

C. Cabinet Temperature ................................................................................................... 20

1. Temperature Display ............................................................................................... 20

2. Adjusting the Temperature Setpoint ....................................................................... 20

3. Changing the Temperature Display Scale (°F or °C) ............................................. 20

D. Defrost ......................................................................................................................... 21

1. Refrigerator ............................................................................................................ 21

2. Freezer .................................................................................................................. 21

E. Food Storage............................................................................................................... 22

F. Perimeter Frame Heater............................................................................................... 22

G. Safety Devices ............................................................................................................ 23

1. Compressor External and Internal Overloads ........................................................ 23

2. Short-Cycle Protection ........................................................................................... 23

3. High-Pressure Switch ............................................................................................ 23

H. Alarm Safeties ............................................................................................................. 23

I. Cooling Performance .................................................................................................... 25

J. Cabinet Condensation ................................................................................................. 25

3

III. Cleaning and Maintenance Instructions .......................................................................... 26

A. Cleaning ...................................................................................................................... 26

1. Exterior ................................................................................................................... 26

2. Cabinet Interior ...................................................................................................... 26

3. Door Gaskets ......................................................................................................... 26

4. Shelves .................................................................................................................. 26

5. Glass Door ............................................................................................................. 26

B. Maintenance ................................................................................................................ 27

1. Air Filter .................................................................................................................. 27

2. Condenser ............................................................................................................. 27

3. Power Supply Connection ...................................................................................... 27

IV. Preparing the Appliance for Periods of Non-Use ............................................................ 28

V. Disposal ........................................................................................................................... 29

4

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 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.

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 this appliance.

• This 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 power switch or plug with
damp hands.

• Make sure the power switch is in the "OFF" position before plugging in or
unplugging the appliance to reduce the risk of electric shock.

• Before servicing, move the power switch to the "OFF" position. Unplug the
appliance from the electrical outlet.

• This appliance 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.

• THIS APPLIANCE MUST BE GROUNDED: Failure to properly ground the
appliance may result in death, electric shock, or re.
Corded Models: Corded models are equipped with either a NEMA5-15
three-prong grounding plug
reduce the risk of potential shock hazards. Corded models must be plugged into
a properly grounded, independent 3-prong wall outlet. If the outlet is a 2-prong
outlet, it is your personal responsibility to have a qualied electrician replace it
with a properly grounded, independent 3-prong wall outlet. Do not remove the
ground prong from the plug and do not use an adapter plug. Failure to follow
these instructions may result in death, electric shock, or re.

or a NEMA5-20 three-prong grounding plug to

5

WARNING, continued

• Do not use an extension cord.

• Do not use an appliance with a damaged power cord. The power cord should not
be altered, jerked, bundled, weighed down, pinched, or tangled. Such actions
could result in electric shock or re. To unplug the appliance, be sure to pull the
plug, not the cord, and do not jerk the cord.

• On corded models, the GREEN ground wire in the factory-installed power cord
is connected to the appliance. If it becomes necessary to remove or replace the
power cord, be sure to connect the power cord's ground wire.

• Do not splash, pour, or spray water directly onto or into the appliance. This might
cause short circuit, electric shock, corrosion, or failure.

• 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 door or allow children or animals
to do so. Do not climb into the appliance or allow children or animals to do so.
Death or serious injury could occur or the appliance could be damaged.

• Be careful not to pinch ngers when opening and closing the doors. Be careful
when opening and closing the doors when children are in the area.

• Open and close the doors with care. Doors opened too quickly or forcefully may
cause injury or damage to the appliance or surrounding equipment.

• Do not use combustible spray or place volatile or ammable substances in or 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 equipment.

• Do not throw anything onto the shelves or load any single shelf with more than
120lb. (54.5 kg) of product. They might fall off and cause injury.

• Do not place anything on top of the appliance. Foreign objects or moisture could
enter the appliance and result in electric shock or re.

• This appliance is designed only for temporary storage of food. Employ sanitary
methods. Use for any other purposes (for example, storage of chemicals or
medical supplies such as vaccine and serum) could cause deterioration of stored
items.

• Do not block the cabinet air inlet or outlet, otherwise cooling performance may be
reduced.

• Do not tightly pack the cabinet. Allow some space between items to ensure good
air ow. Also allow space between items and interior surfaces.

6

WARNING, continued

• Do not place any product on the oor of the cabinet. All product must be placed on
properly installed shelves for reach-in and pass-thru models or on a food cart for
roll-in and roll-thru models.

• Do not put warm or hot foods in the cabinet. Let them cool rst, or they will raise
the cabinet temperature and could deteriorate other foods in the cabinet or
overload the appliance.

• All foods should be wrapped in plastic lm or stored in sealed containers.
Otherwise foods may dry up, pass their smells onto other foods, cause frost
to develop, result in poor appliance performance, or increase the likelihood of
cross-contamination. Certain dressings and food ingredients, if not stored in
sealed containers, may accelerate corrosion of the evaporator, resulting in failure.

• Do not store items near the air outlet. They might freeze up and crack or break
causing a risk of injury or contamination of other food.

NOTICE

• Protect the oor when moving the appliance to prevent damage to the oor.

• Keep ventilation openings, in the appliance enclosure or in the built-in structure,
clear of obstruction. Do not place anything on top of the appliance. Blockage of
airow could negatively affect performance and damage the appliance.

• To prevent deformation or cracks, do not spray insecticide onto the plastic parts or
let them come into contact with oil.

• To avoid damage to the gasket, use only the door handle when opening and
closing.

7

I. Installation Instructions

WARNING

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

• Appliance is heavy. Use care when lifting or positioning. Work in pairs when
needed to prevent injury or damage.

• Do not tilt the appliance more than 45°.

A. Location

WARNING

• This appliance is not intended for outdoor use.

• Normal operating ambient temperature must be within 45°F to 100°F (7°C to
38°C). Operation of the appliance, for extended periods, outside of this normal
temperature range may affect appliance performance.

For best operating results:

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

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

• The appliance should not be located in a corrosive environment.

• The appliance should be a minimum of 4" (11 cm) from side walls. More clearance may be
necessary depending on the door combination of the appliance.

• A minimum of 10" (25 cm) overhead clearance should be provided for proper ventilation.

B. Checks Before Installation

WARNING

Refer to the nameplate for electrical specications. The nameplate is located on
the right side wall of the cabinet interior. For more electrical connection details, see
"I.D. Electrical Connection." We reserve the right to make specication and design
changes without prior notice.

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

• Remove the shipping carton, tape, and packing material. Remove the protective plastic
lm from the exterior panels on all models and from the interior door panels on solid
door models. If the appliance is exposed to the sun or to heat, remove the lm after the
appliance cools.

• Remove all accessory containers before discarding the packing materials. Dispose of all
packing materials in a proper and environmentally responsible manner.

• Check for missing or damaged accessories.

8

C. Setup

1. Remove the Appliance from the Pallet

1) Move as close to the nal location as possible.

2) Remove the 2 bolts securing the appliance to the pallet, then remove the appliance from
the pallet. Block the appliance securely at a height of 8" (20 cm) off the oor. Do not lay
the appliance down.

3) Attach the adjustable legs or casters to the bottom of the appliance. Locking casters
should be attached to the front of the appliance.

2. Optional Overow Pan Installation (if applicable)

Optional overow pan kits are available for the unlikely event that water cannot
evaporate from the condensate pan at a high enough rate.

a) Reach-In Optional Overow Pan (HS-3521)

1) Attach the overow pan brackets by
engaging the tabs on the brackets through
the holes in the bottom of the appliance
and securing with the 4 mounting screws
provided. See Fig. 1.

2) Slide the plastic overow pan into place
under the vinyl hose on the back of the

Overow Pan
Bracket

cabinet.

Reach-In Series

Cabinet

Fig. 1

Mounting
Screws

Ta b

Overow Pan
Bracket

Mounting
Screws

Overow
Pan

b) Pass-Thru Optional Overow Pan (HS-3560)

1) Attach the overow pan brackets by engaging the tabs on the brackets through the holes
in the bottom of the appliance and securing with the 2 mounting screws provided. See
Fig. 2.

2) Slide the plastic overow pan into place under the vinyl hose on the side of the cabinet.

Pass-Thru Series

Overow Pan

Tab Holes

Vinyl Hose

Right Bracket

Left Bracket

Tab Holes

Mounting Screw

Mounting Screw

Fig. 2

9

3. RFH1-SSB(-HS)(-HSE) Reservoir Assembly Installation

The reservoir collects condensate water from the evaporators of both the refrigerator
and freezer. When the reservoir lls, the oat switch activates the condensate pump.
Condensate water is pumped into the condensate pan for evaporation.

WARNING! Verify that the appliance is unplugged before installing the reservoir.

1) Remove the rear panel and rear cover.

2) Uncoil the suction hose and route to the
bottom of the unit. See Fig. 3.

3) Remove the reservoir and oat switch from
the accessory bag. Uncoil the oat switch
cable only. NOTICE! Do not remove the

nylon ties securing the plastic bag to
the reservoir and protecting the oat
switch connection. Next, plug the open

oat switch connector into the pump.
See Fig. 4.

Pump Motor

Open Float Switch
Connector

Suction Hose

Rear Panel

Rear Cover

Fig. 3

Suction Hose

Fig. 4

4) Route the oat switch cable with the suction
hose down to the bottom of the unit.
See Fig. 5.

Pump Motor

Float Switch Cable

Float Switch/Reservoir Assembly

Fig. 5

Suction Hose

10

5) Replace the rear panel and rear cover in their original positions.

6) Remove the suction hose bracket from the accessory bag. Using 1 screw provided in
the accessory bag, attach the suction hose bracket to the rear of the appliance. Secure
the suction hose using the suction hose bracket. See Fig. 6. NOTICE! Conrm that the

tip of the suction hose extends 3/8" (10 mm) below the suction hose bracket and
that the suction hose is not pinched or kinked.

Rear Cover

Suction Hose
Bracket

Suction Hose

3/8" (10 mm)

Suction Hose
Bracket

Suction Hose

Fig. 6

7) Next, Secure the oat switch to the pre-installed oat switch mounting bracket.
See Fig. 7. NOTICE! Conrm that the oat switch moves freely.

Rear Cover

Float Switch

Float Switch
Mounting Bracket

Float Switch

Fig. 7

8) Using 2 screws provided in the accessory bag, attach the reservoir to the rear of the
unit. See Fig. 8.

Reservoir

Reservoir Mounting Screws

Fig. 8

11

4. Check the Refrigeration Circuit

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

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

5. Position and Level the Appliance

• Appliances with legs: Level the appliance in both the front-to-back and side-to-side
directions. Turn the bottom portion of the legs for height adjustment.

• Appliances with casters: Place the appliance in its nal location, then lock the front
casters.

6. Install the Shelves (if applicable)

Shelf support clips are provided in the accessory pack.

1) Place the shelf support clips into the pilasters. Indexing holes are provided on the
pilasters in evenly spaced intervals to assist you in positioning the support clips at the
same height.

2) 2 and 3 section appliances may be equipped with center shelves which should be
installed after the main shelves are in place. The center shelf kit contains additional
clip(s) which support the center shelf when the main shelves on one side of the cabinet
are not aligned with the main shelves on the other side of the cabinet. See Fig. 9.

WARNING! Without this additional support, the shelf assembly could tip under
adverse loading conditions.

Front View

Main Shelf

Center Shelf

Fig. 9

Top View

Clip

Main Shelf

12

7. Install the Handles (Glass Door Appliances)

On glass door appliances, install the door handle(s) as illustrated. See Fig. 10.

Handle

Bolt

Cap

Fig. 10

8. Food Cart Ramp (Roll-In/Roll-Thru Appliances)

1) Attach the taper collars and countersunk screws to the body. See Fig. 11.

2) Attach the ramp ller to the food cart ramp, on the side opposite the door hinge.

3) Hook the food cart ramp over the taper collars.

Body

Door Hinge

Taper Collar

Countersunk Screw

Ramp Filler and Screw

Food Cart Ramp

Door

13

Fig. 11

D. Electrical Connection

WARNING

• Electrical connection 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 severe damage to equipment.

• This appliance 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.

• THIS APPLIANCE MUST BE GROUNDED: Failure to properly ground the
appliance may result in death, electric shock, or re.
Corded Models: Corded models are equipped with either a NEMA5-15
three-prong grounding plug
reduce the risk of potential shock hazards. Corded models must be plugged into
a properly grounded, independent 3-prong wall outlet. If the outlet is a 2-prong
outlet, it is your personal responsibility to have a qualied electrician replace it
with a properly grounded, independent 3-prong wall outlet. Do not remove the
ground prong from the plug and do not use an adapter plug. Failure to follow
these instructions may result in death, electric shock, or re.

or a NEMA5-20 three-prong grounding plug to

• Hard-Wired Models: Hard-wired electrical connections must be made in
accordance with the instructions on the "WARNING" tag, provided with the pig tail
leads in the junction box. SeeFig. 12.

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

• Make sure the power switch is in the "OFF" position before plugging in or
unplugging the appliance to reduce the risk of electric shock.

• Do not use an extension cord.

• Do not use an appliance with a damaged power cord. The power cord should not
be altered, jerked, bundled, weighed down, pinched, or tangled. Such actions
could result in electric shock or re. To unplug the appliance, be sure to pull the
plug, not the cord, and do not jerk the cord.

• On corded models, the GREEN ground wire in the factory-installed power cord
is connected to the appliance. If it becomes necessary to remove or replace the
power cord, be sure to connect the power cord's ground wire.

• Usually an electrical permit and services of a licensed electrician are required.

• The maximum allowable voltage variation is ±10 percent of the nameplate rating.

14

For Hard-Wired Models:

• The white lead must be connected to the neutral conductor of the power source.

NOTICE! Miswiring may result in severe damage to the appliance. See Fig. 12.

• The opening for the power supply connection is 7/8" DIA to t a 1/2" trade size conduit.

WA R N IN G

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 unit. The white lead must be
connected to the neutral conductor
of the power source.
See diagram below.

115-120/60/1

JUNCTION BOX

L

BLACK

15-120V
1

N

WHITE

Fig. 12

4A5263-010

E. Front Panel

1) Push the front panel up approximately 1/2" (1.3 cm) until it is disengaged from the
locking collars. See Fig. 13.

2) Rotate the panel up and away from the face of the appliance until it stops.

3) Pull the front panel forward until the hinge assembly is in the locked position.

3

Pull Forward

2

Rotate

1

Push Up

Front Panel

Locking Collar

Fig. 13

15

F. Door Reversal

This appliance is provided with a cabinet design which, after being delivered to the
installation location, permits changing of the door swing from left to right or right to
left. For further details, contact your local Hoshizaki distributor or Hoshizaki Technical
Support at 1-800-233-1940.

G. Final Checklist

1) Have the legs, casters, or food cart ramp been properly installed and the appliance
leveled?

2) Is the appliance in a site where the ambient temperature is within 45°F to 100°F (7°C to
38°C) all year around?

3) Is there at least 4" (11 cm) clearance from side walls and 10" (25 cm) overhead
clearance for proper ventilation?

4) Have the shipping carton, tape, and packing material been removed from the
appliance? Has the protective plastic lm been removed from both the exterior panels
and the interior door panel?

5) Have the appliance and accessories been checked for shipping damage?

6) Does the electrical connection meet all national, state, and local code and regulation
requirements? Has a proper ground been installed to the appliance? Has the power
supply voltage been checked or tested against the nameplate rating?

7) Corded Models: Is the power supply a properly grounded, independent 3-prong wall
outlet?

8) Hard-Wired Models: Have all electrical connections been made?

9) Has the optional overow pan (if applicable) been properly installed?

10) RFH1-SSB(-HS)(-HSE): Have the oat switch, suction hose bracket, and reservoir been
installed? Does the oat switch move freely? Is the suction hose free of kinks?

11) 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? Are
the compressor hold-down bolts snug?

12) Have the door handles (if applicable) been properly installed?

13) Have the shelves been properly installed?

14) Has the end user been given the instruction manual, and instructed on how to operate
the appliance and the importance of the recommended periodic maintenance?

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

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

16

II. Operating Instructions

A. Important Notes About Usage

WARNING

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

• Failure to install, operate, and maintain the appliance in accordance with this
manual may adversely affect safety, performance, component life, and warranty
coverage.

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

• Do not splash, pour, or spray water directly onto or into the appliance. This might
cause short circuit, electric shock, corrosion, or failure.

• 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 door or allow children or animals
to do so. Do not climb into the appliance or allow children or animals to do so.
Death or serious injury could occur or the appliance could be damaged.

• Be careful not to pinch ngers when opening and closing the door. Be careful
when opening and closing the door when children are in the area.

• Open and close the doors with care. Doors opened too quickly or forcefully may
cause injury or damage to the appliance or surrounding equipment.

• Do not use combustible spray or place volatile or ammable substances in or 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 equipment.

• Do not throw anything onto the shelves or load any single shelf with more than
120 lb. (54.5 kg) of product. They might fall off and cause injury.

• Do not place anything on top of the appliance. Foreign objects or moisture could
enter the appliance and result in electric shock or re.

• This appliance is designed only for temporary storage of food. Employ sanitary
methods. Use for any other purposes (for example, storage of chemicals or
medical supplies such as vaccine and serum) could cause deterioration of stored
items.

• Do not block the cabinet air inlet or outlet, otherwise cooling performance may be
reduced.

• Do not tightly pack the cabinet. Allow some space between items to ensure good
air ow. Also allow space between items and interior surfaces.

17

WARNING, continued

• Do not place any product on the oor of the cabinet. All product must be placed on
properly installed shelves for reach-in and pass-thru models or on a food cart for
roll-in and roll-thru models.

• Do not put warm or hot foods in the cabinet. Let them cool rst, or they will raise
the cabinet temperature and could deteriorate other foods in the cabinet or
overload the appliance.

• All foods should be wrapped in plastic lm or stored in sealed containers.
Otherwise foods may dry up, pass their smells onto other foods, cause frost
to develop, result in poor appliance performance, or increase the likelihood of
cross-contamination. Certain dressings and food ingredients, if not stored in
sealed containers, may accelerate corrosion of the evaporator, resulting in failure.

• Do not store items near the air outlet. They might freeze up and crack or break
causing a risk of injury or contamination of other food.

NOTICE

• Protect the oor when moving the appliance to prevent damage to the oor.

• Keep ventilation openings, in the appliance enclosure or in the built-in structure,
clear of obstruction. Blockage of airow could negatively affect performance and
damage the appliance.

• To prevent deformation or cracks, do not spray insecticide onto the plastic parts or
let them come into contact with oil.

• To avoid damage to the gasket, use only the door handle when opening and
closing.

• Do not leave the doors open.

18

B. Startup

WARNING

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

IMPORTANT

• At startup, there is a 2 1/2 minute delay before the compressor starts.

• On Dual Temp series, there is a delay of approximately 10 seconds between one
compressor start (i.e., freezer) and the next compressor start (i.e., refrigerator).

1) Open the front panel for access to the power switch—located on the front of the control
box. Make sure the power switch is in the "OFF" position.

2) Plug the appliance into the electrical outlet.

3) Move the power switch to the "ON" position to start the cool-down process. Close the
front panel.

4) Allow the appliance to cool down prior to loading it with food products.

Front Panel

Control
Panel

Door

Fig. 14

Up and Down
Buttons

19

C. Cabinet Temperature

1. Temperature Display

• The cabinet temperature is displayed on the control panel. See Fig. 14. The display
default is °F, but it can be changed to read °C. To change, see "II.C.3. Changing the
Temperature Display Scale (°F or °C)".

• The cabinet temperature is updated every 20 seconds.

2. Adjusting the Temperature Setpoint

The temperature setpoint is the value for the average cabinet temperature. The
temperature differential for the compressor to turn on and off is ±3°F (±1.7°C) of the
temperature setpoint. For example, for a refrigerator temperature setpoint of 36°F (2°C),
the compressor comes on at 39°F (3.7°C), and the compressor goes off at 33°F (0.3°C).
Ifnecessary, adjust the temperature setpoint as follows:

1) Press and hold the up and down buttons simultaneously for 3 seconds.
Thecurrenttemperature setpoint will be displayed.

2) To change the temperature setpoint, press the up or down button until the desired value
is displayed.

• Refrigerators: The temperature setpoint is adjustable between 36°F and 50°F (2°C
and 10°C). The factory default for refrigerators is 36°F (2°C).

• Freezers: The temperature setpoint is adjustable between -10°F and 25°F (-23°C and

-4°C). The factory default is -3°F (-19°C).

3) Press the "ENTER" button to set the value and view the next setting. If no change in the
value is desired, press the "ENTER" button repeatedly until you return to the normal
display. If you do not cycle through the menu and no button is pressed in 15 seconds,
the display returns to normal and the temperature setpoint remains unchanged.

3. Changing the Temperature Display Scale (°F or °C)

To change the display scale, follow the steps below.

1) Press and hold the up and down buttons simultaneously for 3 seconds. Press the
"ENTER" button until the F or C temperature display scale is displayed.

2) To change the temperature display, press the up or down button until the desired scale
is displayed. The factory default is °F.

3) Press the "ENTER" button to set the value and return to normal display mode. If you
do not return to the normal display mode and no button is pressed in 15 seconds, the
display returns to normal and the temperature display remains unchanged.

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D. Defrost

1. Refrigerator

Refrigerators use an off-cycle, temperature-initiated or time-initiated defrost. The cabinet
temperature is displayed during defrost.

• Temperature-Initiated Defrost: When the defrost thermistor cools to 13°F (-10.6°C),
defrost begins. When the defrost thermistor warms to 40°F (4.4°C), defrost terminates.
After defrost, there is a 2 1/2 minute delay before the compressor starts.

• Time-Initiated Defrost: The time-initiated defrost is factory set at 0 for normal
operating conditions. Before changing the time-initiated defrost setting, contact your
local Hoshizaki distributor or Hoshizaki Technical Support at 1-800-233-1940 for setting
recommendations. If the factory time-initiated defrost setting is moved from 0 defrosts
per 24hours, the appliance defrosts the number of times selected per day (6=6
defrosts per day (every 4 hours)). When the defrost thermistor warms to 40°F(4.4°C),
defrost terminates. If necessary, adjust the time-initiated defrost frequency as follows:

1) Press and hold the up and down buttons simultaneously for 3 seconds. Press the
"ENTER" button until "dF" is displayed.

2) To change the time-initiated defrost frequency, press the up or down button until the
desired value is displayed. The time-initiated defrost frequency is adjustable between
0 and 12 defrosts per 24 hours. The factory default is 0.

3) To save the value, press the "ENTER" button repeatedly until you have cycled through
the menu and the appliance returns to the normal display mode. If you do not cycle
through the menu and no button is pressed in 15 seconds, the display returns to normal
and the defrost frequency remains unchanged.
Note: The change in the defrost setting will take effect after the next defrost based

on the previous setting. To make this change in interval timing take effect
immediately, turn the appliance off and back on. The next time-initiated defrost
will take effect "x" hours after power is resupplied. For example, if the setting is
dF 6,x=4, the next defrost occurs 4 hours from the time that power is applied.

Primary defrost termination is controlled by the defrost thermistor. However, 1 additional
defrost termination safety is present:

• Time-Termination - 1 hour maximum.

2. Freezer

Freezers use a time-initiated, heated defrost. The cabinet temperature is not displayed
during defrost, "dEF" is displayed in its place. It is preset at the factory to defrost 6times
per day (once every 4 hours) for general conditions. However, if it is determined that
this interval does not suit the actual conditions the appliance is exposed to, the interval
can be changed. Before changing the time-initiated defrost setting, contact your local
Hoshizaki distributor or Hoshizaki Technical Support at 1-800-233-1940 for setting
recommendations. The defrost is a heated defrost, and therefore will have a tendency
to raise the cabinet temperature. When the defrost thermistor warms to 100°F (37.8°C),
defrost terminates. After defrost, there is a 5 minute delay before the compressor starts.
If necessary, adjust the defrost frequency as follows:

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1) Press and hold the up and down buttons simultaneously for 3 seconds. Press the
"ENTER" button until the dF frequency is displayed.

2) To change the time-initiated defrost frequency, press the up and down buttons until
the desired value is displayed. The defrost frequency is adjustable between 1 and
12defrosts per 24 hours. The factory default for freezers is 6.

3) To save the value, press the "ENTER" button repeatedly until you have cycled through
the menu and the appliance returns to the normal display mode. If you do not cycle
through the menu and no button is pressed in 15 seconds, the display will return to
normal and the defrost frequency will remain unchanged.
Note: The change in the defrost setting will take effect after the next defrost based

on the previous setting. To make this change in interval timing take effect
immediately, turn the appliance off and back on. The next time-initiated defrost
will take effect "x" hours after power is resupplied. For example, if the setting is df
6, x=4, the next defrost occurs 4 hours from the time that power is applied.

Primary defrost termination is controlled by the defrost thermistor. However, 2 additional
defrost termination safeties are present:

• Time-Termination - 1 hour maximum.

• Temperature-Termination - Measured by a separate device that is in-line with the
heaters and independent of the control board.

E. Food Storage

• This appliance is designed only for temporary storage of food. Employ sanitary methods.
Use for any other purposes (for example, storage of chemicals or medical supplies such
as vaccine and serum) could cause deterioration of stored items.

• Do not block the cabinet air inlet or outlet, otherwise cooling performance may be reduced.

• Do not tightly pack the cabinet with food. Allow some space between items/containers to
ensure good air ow. Also allow space between food product and interior surfaces.

• Do not put warm or hot foods in the cabinet. Let them cool rst, or they will raise the
cabinet temperature and could deteriorate other foods in the cabinet or overload the
appliance.

• All foods should be wrapped in plastic lm or packed in a container. Otherwise foods may
dry up, pass their smells onto other foods, cause frost to develop, result in poor appliance
performance, or increase the likelihood of cross-contamination. Certain dressings and
food ingredients, if not stored in containers, may accelerate corrosion of the evaporator,
resulting in failure.

F. Perimeter Frame Heater

This appliance is equipped with a perimeter frame heater. The perimeter frame heater
is controlled by the perimeter frame heater switch located on the control box. To help
prevent the formation of condensation on the front frame, turn the perimeter frame heater
on (perimeter frame heater switch red marking visible). If operating the appliance under
conditions where condensation does not form, this heater may be turned off (perimeter
frame heater switch red marking hidden).

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G. Safety Devices

1. Compressor External and Internal Overloads

If a combined temperature/amperage value is above the limit specied by the
compressor manufacturer, the compressor overload operates independently to turn
off the compressor. The compressor overload de-energizes the compressor until the
temperature/amperage value returns to an acceptable level.

2. Short-Cycle Protection

• There is a 2 1/2 minute minimum off-time and on-time for the compressor.
Note: Time may vary with compressor overload or high-pressure switch activation.

3. High-Pressure Switch

If pressure on the high-side of the appliance exceeds Hoshizaki specications, the
high-pressure switch activates and interrupts the compressor circuit (internal to control
board), de-energizing the compressor until the pressure returns to an acceptable level.

H. Alarm Safeties

This appliance incorporates visual and audible alarm safeties built into the control board.
Should one of the alarms occur, follow the instructions in the table below to address the
alarm. The alarm code and the cabinet temperature are displayed in 2-second intervals
in the display window when an alarm occurs. An audible alarm also sounds until the error
is corrected and/or the control board is reset.

Alarm

Code

E1 3

E2 4

No. of Beeps
(every 10 sec.) Problem Reset Options

Alarm Signals

High Temperature Alarm

Refrigerator: Cabinet temperature
has exceeded set temperature by 10°F
(5.6°C) for more than 2 hours.

Freezer: Cabinet temperature has
exceeded set temperature by 25°F
(13.9°C) for more than 4 hours.

Low Temperature Alarm

Cabinet temperature has remained below
the setpoint temperature by 8°F (4.4°C)
for more than 1 hour.

Press the "RESET" button.
If temperature has returned to the
setpoint range, alarm will be silenced
and "E1" clears.
If the temperature has not returned
to the sepoint range, the alarm is
silenced for 5 minutes and "E1"
continues to ash.

If obvious corrections such as closing
doors and cleaning the air lter and/
or condenser do not bring cabinet
temperature back in range, call a
qualied service technician.

Press the "RESET" button.
If the temperature has returned to
the setpoint range, the alarm will be
silenced and "E2" clears.
If the temperature has not returned
to the setpoint range, the alarm will
be silenced for 5 minutes and "E2"
continues to ash.

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If obvious corrections do not bring
the temperature back in range, call a
qualied service technician.

Alarm

Code

E3

E4 6

E6 8

E7 9

E8 Constant

E9 Constant

E10

(Dual Temp

Series)

No. of Beeps
(every 10 sec.) Problem Reset Options

10

Alarm Signals

Defrost Alarm
Freezer Only: Display alternates between

5

"E3" and"dEF".

Defrost has taken longer than 1 hour.
Control board has terminated defrost.

High Pressure Alarm

Compressor discharge pressure is
outside of the normal operating range.
The high pressure switch has been
triggered 3 or more times in 1 hour. The
air lter and/or condenser may require
cleaning.

High Voltage Alarm

Line voltage has been too high for
at least 10 seconds. To protect the
compressor, the compressor shuts down.

Low Voltage Alarm

Line voltage has been too low for at least
10 seconds. To protect the compressor,
the compressor shuts down.

Cabinet Thermistor Malfunction Alarm

Cabinet thermistor has failed.

Defrost Thermistor Malfunction Alarm

Defrost thermistor has failed.

Communication Alarm When communication is restored,

During alarm, press the "RESET"
button. Alarm stops and "E3" clears.

If 4 consecutive defrosts take more
than 1 hour, call a qualied service
technician.

Clean the air lter and/or condenser
if necessary. Press the "RESET"
button. If the high pressure switch
resets automatically, the alarm is
silenced and "E4" clears.

If the high pressure switch trips
5times in 1 hour, the compressor
stops and will not re-start. A service
technician must be called. After the
5th pressure trip, the alarm can be
silenced for 1 hour by pressing the
"RESET" button.

The alarm automatically resets when
acceptable voltage is detected.

Press the "RESET" button to silence
the alarm for 5 minutes. If this alarm
occurs frequently, call a qualied
service technician.

The alarm automatically resets when
acceptable voltage is detected.

Press the "RESET" button to silence
the alarm for 5 minutes. If this alarm
occurs frequently, call a qualied
service technician.

Call a qualied service technician.

During alarm, press the "RESET"
button to silence the alarm for
5 minutes.

Call a qualied service technician.

During alarm, press the "RESET"
button to silence the alarm for
5 minutes.

alarm resets.
During alarm, press the "RESET"
button to silence alarm for 18 hours.

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Alarm Signals

Alarm

Code

CF 1

door

No. of Beeps
(every 10 sec.) Problem Reset Options

Clogged Filter Alarm
Condenser temperature is outside of
normal operating range.
Air lter and/or condenser require
cleaning.

NOTICE! If this alarm occurs
frequently, discharge temperature is
consistently too high. Failure to take
action could result in
damage to the compressor.

Door Alarm

2

Display Only: Door open.
Both Display and Beeps: Door open
longer than 3 minutes.

Clean the air lter and/or condenser.
Allow time for the sensor to reset,
then press the "RESET" button.

During alarm, press the "RESET"
button to silence the alarm for
2 hours.

If this alarm occurs frequently, call a
qualied service technician.

Close the door. During alarm, press
the "RESET"button to silence the
alarm for 3 minutes.

I. Cooling Performance

Be sure the appliance is properly installed and located for optimum cooling performance.
If cooling performance is not at its optimum level, check the following items:

• Door(s) opened too often.

• Door(s) left open. Close.

• Too packed with food or cabinet air inlet/outlet blocked. Allow some space between items/
containers to ensure good air ow.

• Warm or hot foods inside. Take them out until they cool down more.

• Ambient temperature too high. Avoid installation near high heat producing equipment or
exposure to direct sunlight.

• Cabinet temperature setting too high. Readjust it to a lower temperature.

• Appliance in defrost process. The cabinet temperature may rise temporarily during the
defrost cycle, but this will not affect the food inside.

J. Cabinet Condensation

In the event condensation develops on the cabinet exterior, check the following items:

• Perimeter frame heater off. Move the perimeter frame heater switch, located on the
control box, to the "ON" position (red marking visible).

• Door(s) left open, close.

• Ambient humidity too high. In high humidity areas it may be necessary to wipe off the
cabinet frame occasionally.

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III. Cleaning and Maintenance Instructions

A. Cleaning

WARNING

• Before cleaning the appliance, move the power switch to the "OFF" position and
unplug the appliance to prevent electric shock by unexpected entrance of water
into the appliance or injury by moving parts. To reduce the risk of electric shock,
do not touch the power switch or plug with damp hands.

• Before cleaning the appliance, move all foods into another clean refrigerator or
freezer.

• Do not splash water directly onto the appliance. This might cause short circuit,
electric shock, corrosion, or failure.

• Carefully follow instructions provided with cleaning and sanitizing products.

NOTICE

• To prevent damage to the painted or plastic surfaces, do not use the following:
hot water, thinner, benzine, alcohol, petroleum, soap powder, polishing powder,
alkaline cleaner, acid, scouring pad and especially those strong cleaners for use
on a ventilating fan or a cooking range.

• To prevent corrosion and damage to stainless steel surfaces, use only products
formulated for use on stainless steel appliances. Do not use steel wool, abrasive
products, or products containing sodium hypochlorite (chlorine bleach).

• Use a clean cloth for cleaning.

1. Exterior

Wipe the exterior occasionally with a clean, soft cloth. Use a damp cloth containing
a neutral cleaner to wipe off oil or dirt buildup. Clean any rust colored spots using a
non-abrasive cleanser.

2. Cabinet Interior

Spills should be wiped up promptly to avoid unpleasant odors. The cabinet interior should
be cleaned periodically with a mild soap or detergent and warm water.

3. Door Gaskets

Door gaskets should be cleaned regularly with mild soap and warm water to remove dirt
and grease.

4. Shelves

Remove and clean regularly.

5. Glass Door

Wipe the exterior occasionally with a clean, soft cloth. Use a damp cloth containing a
neutral cleaner to wipe off oil or dirt build up.

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B. Maintenance

WARNING

• Move the power switch to the "OFF" position and unplug the appliance before
performing maintenance to prevent electric shock or injury by moving parts. To
reduce the risk of electric shock, do not touch the power switch or plug with damp
hands.

• Before performing maintenance, move all foods into another clean refrigerator or
freezer.

1. Air Filter

A plastic mesh air lter removes dirt and dust from the air, and keeps the condenser
from getting clogged. As the lter becomes clogged, the appliance's performance will be
reduced. Check the lter at least twice a month. When clogged, use warm water and a
neutral cleaner to wash the lter.

2. Condenser

Check the condenser (located behind the air lter) once a year and use a brush or
vacuum cleaner to clean the condenser as required.

3. Power Supply Connection

If the plug or power cord is damaged, contact your local Hoshizaki service
representative or local Hoshizaki distributor immediately and ask for repairs.

All other maintenance or service on this appliance should be performed in accordance
with the Hoshizaki Service Manual by a qualied service technician.

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IV. Preparing the Appliance for Periods of Non-Use

When shutting down the appliance for periods of non-use, follow the instructions below.

WARNING

Prevent the doors from closing to reduce the risk of children getting trapped.

NOTICE

Clean the appliance. See "III.A. Cleaning" for details.

1) Before shutting down the appliance, move the stored food into another refrigerator or
freezer.

2) Move the power switch to the "OFF" position and unplug the appliance.

WARNING! To reduce the risk of electric shock, do not touch the power switch or
plug with damp hands.

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V. Disposal

When disposing of the appliance, follow the instructions below.

WARNING

Remove the door to reduce the risk of children getting trapped. Leave the shelves in
place so that children may not easily climb inside.

This 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.

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618 Hwy. 74 South, Peachtree City, GA 30269 USA (P) 770.487.2331 (F) 770.487.3360 hoshizakiamerica.com 1A3910-010

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