Hoshizaki Reach-In User manual

Hoshizaki
“A Superior Degree
of Reliability”
www.hoshizaki.com
Professional Series
Refrigerated Kitchen Equipment
Hoshizaki America, Inc.
Issued: 11-3-2009
Revised: 3-7-2011
INSTRUCTION MANUAL
Models
Reach-In
Roll-In
Pass-Thru
Roll-Thru

2
IMPORTANT
Only qualied service technicians should install, service, and maintain the
unit. No installation, service, or maintenance should be undertaken until
the technician has thoroughly read this Instruction Manual. Likewise, the
owner/manager should not proceed to operate the unit until the installer has
instructed them on its proper operation. Failure to install, operate, and maintain
the equipment in accordance with this manual may adversely affect safety,
performance, component life, and warranty coverage.
Hoshizaki provides this manual primarily to assist qualied service technicians in the
installation, maintenance, and service of the unit.
Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call, write, or send an e-mail message to the Hoshizaki Technical
Support Department for assistance.
HOSHIZAKI AMERICA, INC.
618 Highway 74 South
Peachtree City, GA 30269
Attn: Hoshizaki Technical Support Department
Phone: [phone] Technical Support
[phone]
Fax: [phone]
[phone]
E-mail: [email protected]
Web Site: www.hoshizaki.com
NOTE: To expedite assistance, all correspondence/communication MUST include the
following information:
  •ModelNumber
  •SerialNumber
  •Completeanddetailedexplanationoftheproblem.

3
CONTENTS
Important Safety Information ................................................................................................. 5
I. Installation Instructions ....................................................................................................... 6
A. Location ........................................................................................................................ 6
B. Checks Before Installation............................................................................................. 6
C. Setup............................................................................................................................. 7
1. Remove the Unit from the Pallet............................................................................... 7
2. Optional Overow Pan Installation (if applicable) .................................................... 7
a) Reach-In Optional Overow Pan (HS-3521) ...................................................... 7
b) Pass-Thru Optional Overow Pan (HS-3560) .................................................... 7
3. RFH1-SSB-HS Reservoir Installation ...................................................................... 8
D. Electrical Connection ...................................................................................................11
E. Front Panel.................................................................................................................. 12
F. Door Reversal .............................................................................................................. 13
G. Final Checklist ............................................................................................................ 13
II. Operating Instructions...................................................................................................... 14
A. Operation ................................................................................................................... 14
B. Startup ........................................................................................................................ 15
C. Cabinet Temperature................................................................................................... 16
1. Temperature Display............................................................................................... 16
2. Adjusting the Temperature Setpoint....................................................................... 16
3. Changing the Temperature Display Scale (°F or °C) ............................................. 16
D. Defrost......................................................................................................................... 17
1. Refrigerator ............................................................................................................ 17
2. Freezer .................................................................................................................. 17
E. Food Storage............................................................................................................... 18
F. Perimeter Frame Heater............................................................................................... 18
G. Safety Devices............................................................................................................ 19
1. Compressor External and Internal Overloads ........................................................ 19
2. Short-Cycle Protection ........................................................................................... 19
3. High-Pressure Switch ............................................................................................ 19
H. Alarm Safeties............................................................................................................. 19
I. Cooling Performance .................................................................................................... 21
J. Cabinet Condensation ................................................................................................. 21
IMPORTANT
This manual should be read carefully before the unit is installed and operated.
Only qualied service technicians should install, service, and maintain the unit.
Read the warnings contained in this booklet carefully as they give important
information regarding safety. Please retain this booklet for any further reference
that may be necessary.

4
III. Cleaning and Maintenance Instructions.......................................................................... 22
A. Cleaning...................................................................................................................... 22
1. Exterior................................................................................................................... 22
2. Cabinet Interior ...................................................................................................... 22
3. Door Gaskets......................................................................................................... 22
4. Shelves.................................................................................................................. 22
5. Glass Door............................................................................................................. 22
B. Maintenance................................................................................................................ 23
1. Air Filter .................................................................................................................. 23
2. Condenser ............................................................................................................. 23
3. Power Supply Connection...................................................................................... 23
C. Shutdown and Long Storage....................................................................................... 23

5
Important Safety Information
Throughout this manual, notices appear to bring your attention to situations which could
result in death, serious injury, or damage to the unit.
WARNING Indicates a hazardous situation which could result in death or
serious injury.
CAUTION Indicates a situation which could result in damage to the unit.
IMPORTANT Indicates important information about the use and care of the
unit.
WARNING
This unit 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.
To reduce the risk of death, electric shock, serious injury, or re, follow
basic precautions including the following:
•Makesurethepowerswitchisinthe"OFF"positionbeforemakingany
electrical connections, plugging in, or unplugging the unit to reduce the risk
of electric shock.
•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unitrequiresanindependentpowersupply.Seethenameplateforproper
voltage and breaker/fuse size. Failure to use a proper breaker or fuse can
result in a tripped breaker, blown fuse, or damage to existing wiring. This
could lead to heat generation or re.
•THIS UNIT MUST BE GROUNDED. Failure to properly ground this unit could
result in death or serious injury. Corded Units: Corded units are equipped
with a 3-prong grounding plug to reduce the risk of potential shock hazards.
It 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 power cord and do not
use an adapter plug.
•Donotuseanextensioncord.
•Donotuseaunit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 unit, be sure to pull the
plug, not the cord, and do not jerk the cord.
•Toreducetheriskofelectricshock,donottouchtheplugorpowerswitch
with damp hands.
•Thisunitshouldbedisassembledorrepairedonlybyqualiedservice
personnel to reduce the risk of electric shock, injury, or re.
•Donotmakeanyalterationstotheunit.Alterationscouldresultinelectric
shock, injury, re, or damage to the unit.

6
I. Installation Instructions
WARNING
1. This unit must be installed in accordance with all applicable national, state,
and local regulations.
2. Unit is heavy. Use care when lifting or positioning. Work in pairs when
needed to prevent injury or damage. Do not tilt the unit more than 45°.
A. Location
WARNING
This unit is not intended for outdoor use. Normal operating ambient
temperature should be within 45°F to 100°F (7°C to 38°C). Operation of the
unit, for extended periods, outside of this normal temperature range may affect
unit performance.
For best operating results:
•Theunit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unit.
•Theunitshouldnotbelocatedinacorrosiveenvironment.
•Theunitshouldbeaminimumof4"(11cm)fromsidewalls.Moreclearancemaybe
necessary depending on the door combination of the unit.
•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.Alsoremovetheprotective
plastic lm from both the exterior panels and the interior door panel. If the unit is exposed
to the sun or to heat, remove the lm after the unit 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.

7
C. Setup
1. Remove the Unit from the Pallet
1) Move as close to the nal location as possible.
2) Remove the 2 bolts securing the unit to the pallet, then remove the unit from the pallet.
Blocktheunitsecurelyataheightof8"(20cm)offtheoor.Donotlaytheunitdown.
3) Attach the adjustable legs or casters to the bottom of the unit. Locking casters should be
attached to the front of the unit.
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 unit 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
cabinet.
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 unit 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.
Fig. 1
Cabinet
Overow Pan
Bracket
Mounting
Screws
Overow
Pan
Ta b
Mounting
Screws
Overow Pan
Bracket
Reach-In Series
Fig. 2
Tab Holes
Left Bracket
Right Bracket
Overow Pan
Tab Holes
Mounting Screw
Pass-Thru Series
VinylHose
Mounting Screw

8
3. RFH1-SSB-HS Reservoir 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unitisunpluggedbeforeinstallingthereservoir.
1) Remove the nylon tie securing the oat switch to the rear cover. See Fig. 3. Pull the oat
switch down below the rear cover.
2) Make sure the reservoir is dry, then use the double-sided tape on the oat switch to
adhere the oat switch to the bottom of the reservoir. See Fig. 4. CAUTION! Conrm
that the PVC tubing is not pinched or kinked, and that the opening in the oat
switch is free of any obstructions.
3) Using the 2 screws provided, mount the reservoir to the rear of the unit. See Fig. 5.
4) Plug the unit in.
Fig. 3
Rear Cover
Float Switch
Fig. 4
Fig. 5
Nylon Tie
Reservoir
Reservoir
Mounting Screws
Reservoir
PVCTubing
Float Switch
Opening

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Fig. 6
Main Shelf
Center Shelf
Main Shelf
Clip
Top View
Front View
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 Unit
•Unitswithlegs:Leveltheunitinboththefront-to-backandside-to-sidedirections.Turn
the bottom portion of the legs for height adjustment.
•Unitswithcasters:Placetheunit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 units 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. 6. WARNING!
Without this additional support, the shelf assembly could tip under adverse
loading conditions.

10
8. Food Cart Ramp (Roll-In/Roll-Thru Units)
1) Attach the taper collars and countersunk screws to the body. See Fig. 8.
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.
Food Cart Ramp
Taper Collar
Ramp Filler and Screw
Countersunk Screw
Fig. 8
Body
Door
Door Hinge
7. Install the Handles (Glass Door Units)
On glass door units, install the door handle(s) as illustrated. See Fig. 7.
Cap
Bolt
Handle
Fig. 7

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D. Electrical Connection
WARNING
1.Makesurethepowerswitchisinthe"OFF"positionbeforemakingany
electrical connections, plugging in, or unplugging the unit to reduce the risk
of electric shock.
2. 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.
3. This unit requires an independent power supply. See the nameplate for
proper voltage and breaker/fuse size. Failure to use a proper breaker or fuse
can result in a tripped breaker, blown fuse, or damage to existing wiring. This
could lead to heat generation or re.
4. 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. 9.
5. THIS UNIT MUST BE GROUNDED. Failure to properly ground this unit could
result in death or serious injury. Corded Units: Corded units are equipped
with a 3-prong grounding plug to reduce the risk of potential shock hazards.
It 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 power cord and do not
use an adapter plug.
6. Do not use an extension cord.
7. Do not use a unit 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 unit, be sure to pull the
plug, not the cord, and do not jerk the cord.
8. To reduce the risk of electric shock, do not touch the plug or power switch
with damp hands.
9. On corded units, the GREEN ground wire in the factory-installed power cord
is connected to a screw in the control box. 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.
•Thisunitshouldbedisassembledorrepairedonlybyaqualiedservicetechnicianto
reduce the risk of electric shock or re.

12
Pull Forward Front Panel
Locking Collar
Rotate
Push Up
1
2
3
Fig. 10
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. 10.
2) Rotate the panel up and away from the face of the unit until it stops.
3) Pull the front panel forward until the hinge assembly is in the locked position.
Fig. 9
For Hard-Wired Units:
•Thewhiteleadmustbeconnectedtotheneutralconductorofthepowersource.
CAUTION! Miswiring may result in severe damage to the unit. See Fig. 9.
•Theopeningforthepowersupplyconnectionis7/8"DIAtota1/2"tradesizeconduit.
115-120/60/1
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 unit. The white lead must be
connected to the neutral conductor
of the power source.
See diagram below.
4A5263-010
JUNCTION BOX
1
15-120V
BLACK
WHITE
L
N

13
F. Door Reversal
This unit 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 unit leveled?
2) Is the unit 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 unit?
Has the protective plastic lm been removed from both the exterior panels and the
interior door panel?
5) Have the unit 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 unit? Has the power supply
voltage been checked or tested against the nameplate rating?
7) Corded Units: Is the power supply a properly grounded, independent 3-prong wall
outlet?
8) Hard-Wired Units: Have all electrical connections been made?
9) Has the optional overow pan (if applicable) been properly installed?
10) Has the lower condensate pan (RFH1-SSB-HS) been properly installed?
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 unit 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?

14
II. Operating Instructions
A. Operation
IMPORTANT
1. Do not leave the doors open.
2. Open and close the doors with care. Doors opened too quickly or forcefully
may cause injury or damage to the unit or surrounding equipment.
3. To prevent deformation or cracks, do not spray insecticide onto the plastic
parts or let them come into contact with oil.
4. To avoid damage to the gasket, use only the door handle (do not grab the top
of the door directly) when opening and closing.
WARNING
1. To reduce the risk of electric shock, do not touch the plug or power switch
with damp hands.
2. Do not hang on or push down on the doors. The doors might be damaged,
fall off, or the unit could tip over, causing injury.
3. Do not store any volatile or ammable substances, such as benzine,
ether, alcohol, adhesives, or LPG in the unit. They are potential sources of
explosion or re.
4. 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.
5. Do not store food or food containers near the air outlet. They might freeze up
and crack or break causing a risk of injury or contamination of other food.
6. Do not use combustible spray or place volatile and ammable substances
near the unit. They might catch re.
7. Do not place anything on top of the unit. Foreign objects or moisture could
enter the unit and result in electric shock or re. Blockage of airow could
also negatively affect performance and damage the equipment.

15
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.
Note: 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 unit 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 unit to cool down prior to loading it with food products.
Front Panel
Control
Panel
Door Up and Down
Buttons
Fig. 11

16
C. Cabinet Temperature
1. Temperature Display
•Thecabinettemperatureisdisplayedonthecontrolpanel.SeeFig.11.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 unit 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 unit 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 unit 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 unit 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:

18
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 unit 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 unit 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unit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 unit.
•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 unit
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 unit 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 unit 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 unit 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 unit 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 Signals
Alarm
Code
No. of Beeps
(every 10 sec.) Problem Reset Options
E1 3
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.
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.
E2 4
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 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.
If obvious corrections do not bring
the temperature back in range, call a
qualied service technician.

20
Alarm Signals
Alarm
Code
No. of Beeps
(every 10 sec.) Problem Reset Options
E3 5
Defrost Alarm
Freezer Only: Display alternates between
"E3"and"dEF".
Defrost has taken longer than 1 hour.
Control board has terminated defrost.
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.
E4 6
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.
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.
E6 8
HighVoltageAlarm
Line voltage has been too high for
at least 10 seconds. To protect the
compressor, the compressor shuts down.
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.
E7 9
LowVoltageAlarm
Line voltage has been too low for at least
10 seconds. To protect the compressor,
the compressor shuts down.
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.
E8 Constant
Cabinet Thermistor Malfunction Alarm
Cabinet thermistor has failed.
Call a qualied service technician.
Duringalarm,pressthe"RESET"
button to silence the alarm for
5 minutes.
E9 Constant
Defrost Thermistor Malfunction Alarm
Defrost thermistor has failed.
Call a qualied service technician.
Duringalarm,pressthe"RESET"
button to silence the alarm for
5 minutes.
E10
(Dual Temp
Series)
10
Communication Alarm When communication is restored,
alarm resets.
Duringalarm,pressthe"RESET"
button to silence alarm for 18 hours.