Hussmann SM-115W User manual

SM
Low Temperature Spot Merchandisers
Installation &
Operation Manual
P/N 2400205_J
September 2020
IMPORTANT
Keep in store for
future reference!
Spanish 0531305
MANUAL - I/O SELF CONTAINED SM
®
Æ

ii Maintenance
Do not break the cold chain. Keep products in
freezer before loading into merchandiser.
These merchandiser are designed only
for frozen products.
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards!
12999 St. Charles Rock Road • Bridgeton, MO 63044-2483
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900
www.hussmann.com
© 2020 Hussmann Corporation

P/N 2400205_J iii
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
ANSI DEFINITIONS ................. vi
INSTALLATION
UL Certification ..................... 1-1
Federal/State Regulations ............. 1-1
Hussmann Product Control ........... 1-1
Shipping Damage ................... 1-1
Location ........................... 1-1
Self Contained Location .............. 1-2
Model Description .................. 1-3
Unloading ......................... 1-3
Exterior Loading .................... 1-3
Shipping Skid ...................... 1-3
Serial Plate Location ................. 1-4
Refrigeration Unit Access ............. 1-4
Caster Kit ......................... 1-4
Waste Outlet ....................... 1-4
Sealing Merchandiser to Floor ......... 1-4
Startup Checklist .................... 1-5
ELECTRICAL / REFRIGERATION
Merchandiser Electrical Data .......... 2-1
Field Wiring ........................ 2-1
Electrical Connections . . . . . . . . . . . . . . . . 2-1
Electrical Outlet ..................... 2-1
Refrigeration (Self Contained) ......... 2-2
Defrost ............................ 2-2
Temperature Control ................ 2-2
High Pressure Switch ................ 2-2
START UP / OPERATION
Start-Up ........................... 3-1
Controls and Adjustments ............. 3-1
Load Limits ........................ 3-2
Stocking ........................... 3-2
Thermometer ....................... 3-2
MAINTENANCE
Care and Cleaning ................... 4-1
Do NOT Use ....................... 4-1
Do ............................... 4-1
Cleaning Stainless Steel Surfaces ....... 4-2
Cleaning Pencil Thermometer ......... 4-2
Cleaning Coils ...................... 4-3
Bumpers and Optional Kits ........... 4-3
Equipment Maintenance Check List .... 4-4
SERVICE
Troubleshooting Guide ............... 5-1
Parts List .......................... 5-2
APPENDIX
Plan View & Cross Section ........... A-1
Refrigeration Data ................. A-2
Defrost Data........................A-2
Physical Data .......................A-2
Electrical Data ..................... A-3
Wiring Diagram SM ................ A-4
WARRANTY
TABLE OF CONTENTS iii
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers

iv Maintenance
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
REVISION HISTORY
REVISION J — Updated note for frozen products;
Updated Casters and Caster Height, Page 1-4 and A-1
REVISION H — Updated for DOE; removed SN model
REVISION G — UL Listing California Warning, Page
1-1, 1-2; Updated Parts List, Page 5-2; Changed part num-
bers, Page 5-2; Compressor LRA, Page A-3; Condensing
Unit Capacity and Note, Page A-2; Replaced Wiring
Diagram, Page A-4.
REVISION F — New Photo, Page 2-2; Parts List
REVISION E — Added Checklists Page 1-5; Added
Warning Page 1-3; Cleaning Coils 4-2; Maintaining
Fluorescent Lights 4-3; Added Checklist 4-5
REVISION D — JANUARY 2013
1. Added Appendix A, Technical Data
iv
* * * * * * * * * * * * * * * * * * * * * * * * * *
ANSI Z535.5 DEFINITIONS
• DANGER – Indicate[s] a hazardous
situation which, if not avoided, will
result in death or serious injury.
• WARNING –Indicate[s] a hazardous
situation which, if not avoided, could
result in death or serious injury.
• CAUTION –Indicate[s] a hazardous
situation which, if not avoided, could
result in minor or moderate injury.
• NOTICE – Not related to personal injury –
Indicates[s] situations, which if not avoided,
could result in damage to equipment.



P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com

P/N 2400205_J 1-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
UL LISTING
These merchandisers are manufactured to meet
ANSI/ UL 471 standard requirements for safety.
Proper installation is required to maintain the
listing.
FEDERAL / STATE REGULATION
These merchandisers at the time they are
manufactured, meet all federal and state/
provincial regulations. Proper installation
is required to ensure these standards are
maintained. Near the serial plate, each
merchandiser carries a label identifying the
environment for which the merchandiser was
designed for use.
ANSI/NSF-7 Type I – Display Refrigerator / Freezer
Intended for 75°F (24°C) / 55%RH Ambient Application
ANSI/NSF-7 Type II – Display Refrigerator / Freezer
Intended for 80°F / 55%RH Ambient Application
ANSI/NSF-7 – Display Refrigerator
Intended for Bulk Produce
HUSSMANN PRODUCT CONTROL
The serial number and shipping date of all
equipment is recorded in Hussmann’s files for
warranty and replacement part purposes. All
correspondence pertaining to warranty or parts
ordering must include the serial number of each
piece of equipment involved. This is to ensure
the customer is provided with the correct parts.
SHIPPING DAMAGE
All equipment should be thoroughly examined
for shipping damage before and during
unloading. This equipment has been carefully
inspected at our factory. Any claim for loss or
damage must be made to the carrier.
The carrier will provide any necessary inspection
reports and/or claim forms.
Apparent Loss or Damage
If there is an obvious loss or damage, it must be
noted on the freight bill or express receipt and
signed by the carrier’s agent; otherwise, carrier
may refuse claim.
Concealed Loss or Damage
When loss or damage is not apparent until
after equipment is un-crated, retain all packing
materials and submit a written response to the
carrier for inspection within 15 days.
LOCATION
These merchandisers are designed for
displaying products in air conditioned stores
where temperature is maintained at or below
the ANSI / NSF-7 specified level and relative
humidity is maintained at or below 55%.
Placing refrigerated merchandisers in direct
sunlight, near hot tables or near other heat
sources could impair their efficiency. Like
other merchandisers, these merchandisers are
sensitive to air disturbances. Air currents passing
around merchandisers will seriously impair their
operation. Do NOT allow air conditioning,
electric fans, open doors or windows, etc. to create
air currents around the merchandiser.
INSTALLATION
SM recommended operating ambient
temperature is between 65°F (18°C)
and 75°F (26.7°C). Maximum
relative humidity is 55%.

1-2 Maintenance
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
SELF CONTAINED (LOCATION)
SM models have a condensing unit that draws
ambient air through one side of the unit and
discharges hot air out by the opposite side. In
order to maintain refrigeration performance
and compressor life, a minimum space of
4 inches must be maintained between the
merchandiser and surrounding surfaces.
This warning does not mean that Hussmann products
will cause cancer or reproductive harm, or is in
violation of any product-safety standards or
requirements. As clarified by the California State
government, Proposition 65 can be considered more of
a‘right to know’ law than a pure product safetylaw.
When used as designed, Hussmann believes that our
products are notharmful. We provide the Proposition
65 warning to stay in compliance with California State
law. It is your responsibility to provide accurate
Proposition 65 warning labels to your customers when
necessary. For more information on Proposition 65,
please visit the California State government website.
August 31, 2018

P/N 2400205_J 1-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
MODEL DESCRIPTION
SM models are open-top merchandisers,
designed for low temperature operation.
These models are designed with a cold wall
refrigeration system. The air circulation inside
the merchandiser is provided by natural
convection.
UNLOADING
Unloading from Trailer:
Use a Lever Bar (also known as a Mule,
Johnson Bar, J-bar, Lever Dolly, or Pry Lever).
Move the merchandiser as close as possible to
its permanent location and remove all packaging.
Check for damage before discarding packaging.
Remove all separately packed accessories such
as kits and shelves.
Improper handling may cause damage to the
merchandiser when unloading. To avoid damage:
1. Do not drag the merchandiser out of the
trailer. Use a Johnson bar (mule).
2. Use a forklift or dolly to remove the
merchandiser from the trailer.
EXTERIOR LOADING
Do NOT walk on top of merchandisers or
damage to the merchandisers and serious
personal injury could occur.
merchandisers are not structurally
designed to support external loading such
as the weight of a person. Do not place heavy
objects on the merchandiser.
SHIPPING SKID
Each merchandiser is shipped on a skid to
protect the merchandiser’s base, and to make
positioning the case easier.
Remove the skid by raising one end of the
merchandiser approximately 6 inches. Block the
merchandiser securely, and remove the two skid
bolts from the raised end. Replace the bolts
with (provided) casters. Repeat this procedure
at opposing end. Once the casters are secured in
place, the merchandiser may be slid off the skid
and placed in its final location.
DO NOT TILT MERCHANDISER ON ITS
SIDE OR END WHEN REMOVING SKID.
Once the skid is removed, the merchandiser
must be lifted —NOT PUSHED— to reposition.
Check floor where merchandisers are to be set
to see if it is a level area. Determine the highest
part of the floor.
Do NOT remove shipping crate until the
merchandiser is positioned for installation.
Do NOT stand or walk on top of
merchandiser. Do not store items or
ammable materials atop the unit.

1-4 Maintenance
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
SERIAL PLATE LOCATION
The serial plate is located on the base, next to
the air intake / discharge air louvers. The serial
plate contains all pertinent refrigeration and
electrical information. The serial plate should
not be removed for any reason.
REFRIGERATION UNIT ACCESS
The access panel on the base of the cabinet
provides access to the condensing unit and
electrical box.
CASTER KIT
Caster kit is packed out inside of the case. The
braking casters screw into the standard threaded
holes in the four corners underneath the case.
WASTE OUTLET
The waste outlet cap must be installed during
normal operation. This prevents warm air from
migrating back through the drain to the inside
of the merchandiser. Failure to cap the waste
outlet, could result in excessive frosting of the
interior walls.
SEALING MERCHANDISER TO FLOOR
If required by local sanitary codes, or if the
customer desires, merchandisers may be sealed
to the floor using a vinyl cove base trim. The
size needed will depend on how much variation
there is in the floor, from one end of the
merchandiser to the other. Sealing of the lower
front and rear panels on self contained models
may hamper their removal for servicing or
maintenance of the condensing unit.
NOTE: Do not allow trim to cover any intake
or discharge grilles located in the lower front
panel.
— LOCK OUT / TAG OUT —
To avoid serious injury or death from electrical
shock, always disconnect the electrical power
at the main disconnect when servicing or
replacing any electrical component. This
includes, but is not limited to, such items as
doors, lights, fans, heaters, and thermostats.

P/N 2400205_J 1-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
Hussmann Self-Contained Refrigeration Equipment Start Up Check List
***Please note that failure to follow this start-up document may void your factory warranty***
Form HSCW01 Rev. 30MAY12 P/N 0525209_B
Step Startup Activity Check
1 Locate, read and maintain install/operation manual in a safe place for
future reference.
2 Examine unit. Confirm there is NO damage or concealed damage.
3 Level the unit, side to side and front to rear.
4 Remove all shipping brackets/compressor straps/bolts etc.
5 Unit must be run on a dedicated electrical circuit without the use of
an extension cord.
6 Ensure that the proper electrical requirements for the equipment are
supplied.
7 Verify field electrical connections are tight.
8 Verify all electrical wiring is secured and clear of any sharp edges or
hot lines.
9 Verify the condensate drain line is properly trapped and pitched.
10 Verify all required clearances on the sides and back of unit.
11 Verify there are no air disturbances external to the unit. Heat and air
registers, fans, and doors etc.
Advise owner/operator that merchandiser must operate at temperature for 24 hrs prior to loading
with product.
LEGAL DISCLAIMER:
Hussmann shall not be liable for any repair or replacements made without the written consent of Hussmann, or when the product is installed or operated in a manner
contrary to the printed instructions covering installation and service which accompanied such product.

1-6 Maintenance
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
NOTES:

P/N 2400205_J 2-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
MERCHANDISER ELECTRICAL DATA
Refer to Appendix A of this manual or the
merchandiser’s serial plate for electrical infor-
mation.
FIELD WIRING
Field wiring must be sized for component
amperes stamped on the serial plate. Actual
ampere draw may be less than specified.
ELECTRICAL CONNECTIONS
SM models have a power cord attached to the
unit with a ground prong. The cord is rated
115V / 15 Amp.
All of these models are 60 hz, 1 ph. Connecting
this unit to any electrical supply other than
specified on the serial plate will void the war-
ranty and may result in serious damage to the
unit. The cabinet should be supplied with its
OWN service.
ELECTRICAL OUTLET
Before the merchandiser is connected to any
wall circuit, use a voltmeter to check that the
outlet is at 100% of the rated voltage. The wall
circuit must be dedicated for the merchandiser.
Failure to do so voids the warranty. Do not
use an extension cord. Never plug in more
than one merchandiser per electrical circuit.
• Always use a dedicated circuit with the
amperage stated on the unit.
• Plug into an outlet designed for the plug.
• Do not overload the circuit
• Do not use long or thin extension cords.
Never use adapters.
• If in doubt, call an electrician.
ELECTRICAL / REFRIGERATION
ALWAYS CHECK THE SERIAL PLATE FOR
COMPONENT AMPERES
Merchandiser must be grounded.
Do not remove the power supply cord ground.
Risk of Electric Shock. If cord or plug becomes
damaged, replace only with a cord and plug of
the same type.
— LOCK OUT / TAG OUT —
To avoid serious injury or death from electrical
shock, always disconnect the electrical power
at the main disconnect when servicing or
replacing any electrical component. This
includes, but is not limited to, such items as
doors, lights, fans, heaters, and thermostats.

2-2 Maintenance
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
TEMPERATURE CONTROL
An adjustable thermostat is provided for the
operation of the case. The thermostat on the
SM-110 is located on the right side of the base.
For all other SM models, it is located on the
rear at the left side of the base, next to the
access panel. The thermostat has a control
screw for temperature adjustment. The com-
pressor will run 100% of the time in the full
clockwise position.
HIGH PRESSURE SWITCH
A high pressure limit switch is provided on all
spot merchandiser models. This switch is used
to limit the discharge pressure of the compressor.
The high pressure switch will automatically cycle
off the compressor and turn on a warning light
on the base, when the discharge pressure in the
system is too high. If this condition occurs, first
clean the condenser. Call for service if the warn-
ing light continues to illuminate.
REFRIGERATION
(Self Contained Models)
Each self contained model is equipped with
its own condensing unit and control panel
located beneath the display area. The correct
type of refrigerant will be stamped on each
merchandiser’s serial plate. The merchan-
diser refrigeration piping is leak tested. The
unit is charged with refrigerant, and shipped
from the factory with all service valves open.
SM models have a refrigeration system that
uses a hermetic compressor. SM systems use
a capillary tube for refrigerant control. The
capillary tube is soldered to the suction line
pull-out coil for proper heat exchange. If the
capillary should become plugged or damaged, it
is best to replace the heat exchanger.
DEFROST
These merchandisers require manual defrost.
When defrosting is necessary, disconnect elec-
trical power to the merchandiser. Remove all
products. Remove drain plug. Attach a hose,
or use a pan before melting ice begins to drip
out of the drain.
Do not remove frost with a pick, knife or by
scraping with a sharp object. Do not allow
water to drain on the floor. When the unit is
finished defrosting, clean the inside. Install the
plug on the drain tube, and connect the unit to
the correct power supply.
Refrigeration lines are under pressure.
Refrigerant must be recovered before
attempting any connection or repair.
Thermostat
Position only for
SM-110
Case
Front
All other SM
Models
Thermostat
with control
screw
Base
Case
Back
Access Panel

P/N 2400205_J 3-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
START UP
Follow the electromechanical controls start
up procedures as detailed in Section 2 of this
manual.
a. Inspect the refrigeration lines for visible
damage or chafing.
b. Replace access panel.
c. Turn on the electrical power, by plugging
in the merchandiser. The merchandiser
must pull down in temperature. Allow
merchandiser 24 hours to operate before
loading product.
1. The T-stat controller controls refrigeration
temperature. This is factory installed in the
control panel.
Defrosts are manual and required when a layer
of ice builds up on the interior walls.
START UP / OPERATION

3-2 Maintenance
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
LOAD LIMITS
Each merchandiser has a load limit decal. Shelf
life of perishables will be short if load limit is
violated.
Atno time should merchAndisers be
stocked beyond the loAd limits indicAted.
STOCKING
Product should NOT be placed inside the
merchandisers until merchandisers are at
proper operating temperature.
Allow merchandiser 24 hours to operate before
loading product.
Proper rotation of product during stocking
is necessary to prevent product loss. Always
bring the oldest product to the top and set the
newest to the bottom.
THERMOMETER
The cabinet has a “pencil” type thermometer
and reads from -40º F to 120º F / -40º F to 50º
F on 2º increments.
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.
LOAD LIMIT

P/N 2400205_J 4-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
CARE AND CLEANING
Long life and satisfactory performance of
any equipment is dependent upon the care it
receives. To ensure long life, proper sanita-
tion and minimum maintenance costs, these
merchandisers should be thoroughly cleaned,
all debris removed and the interiors washed
down, weekly.
Exterior Surfaces
The exterior surfaces must be cleaned with a
mild detergent and warm water to protect and
maintain their attractive finish. never use
AbrAsive cleAnsers or scouring pAds.
Interior Surfaces
The interior surfaces may be cleaned with most
domestic detergents, ammonia based cleaners
and sanitizing solutions with no harm to the
surface. Self contained models empty into a
limited capacity evaporation pan, which will
overflow if excess water is used in cleaning.
Do NOT Use:
•Abrasive cleansers and scouring pads, as these
will mar the finish.
•Coarse paper towels on coated glass.
•Ammonia-based cleaners on acrylic parts.
•Solvent, oil or acidic based cleaners on any
interior surfaces.
•Do not use high pressure water hoses.
Do Use:
•Disconnect electrical power before cleaning.
•Remove the product and all loose debris to
avoid clogging the waste outlet.
•Store product in a refrigerated area such as a
cooler. Remove only as much product as can
be taken to the cooler in a timely manner.
•Thoroughly clean all surfaces with soap and
hot water. donot use steAm or high wAter
pressure hoses to wAsh the interior.
these will destroy the merchandisers’
sealing causing leaks and poor performance.
•Do NOT flood merchandiser with water.
never introduce wAter fAster thAn the
wAste outlet cAn remove it.
remove drAin cAp, And collect wAter
during the cleAning process in ApAn. do
not Allow the wAter to drAin on the
floor.
•Allow merchandisers to dry before resuming
operation.
•After cleaning is completed, turn on power to
the merchandiser.
MAINTENANCE
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.
Do NOT allow cleaning agent or
cloth to contact food product.

4-2 installation
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
CLEANING STAINLESS STEEL SURFACES
Use non-abrasive cleaning materials, and
always polish with grain of the steel. Use warm
water or add a mild detergent to the water and
apply with a cloth. Always wipe rails dry after
wetting.
Use alkaline chlorinated or non-chlorine
containing cleaners such as window cleaners
and mild detergents. Do not use cleaners
containing salts as this may cause pitting and
rusting of the stainless steel finish. Do not use
bleach.
CLEANING PENCIL THERMOMETER
SM models have pencil thermometers. The
thermometer is located at the top, front center
of the merchandiser’s cabinet interior.
To clean the thermometer:
1. Remove the two screws securing the
thermometer to its mounting bracket.
2. Remove the plastic ends from the
thermometer. Then, slide out the glass
tube.
3. Use non-abrasive cleaning materials and
a mild detergent to clean glass tube and
thermometer cover.
4. Replace thermometer.
Pencil Thermometer
— LOCK OUT / TAG OUT —
To avoid serious injury or death from electri-
cal shock, always disconnect the electrical
power at the main disconnect when servicing
or replacing any electrical component. This
includes, but is not limited to, such items as
doors, lights, fans, heaters, and thermostats.
CAUTION
!CAUTION !
WARNING
DANGER
!
!
WARNING
DANGER
!
!
!
NOTICE
CAUTION CAUTION
NOTICE
Do NOT use HOT water on Cold glass Surfaces.
This can cause the glass to shatter and could
result in personal injury. Allow glass fronts, to
warm before applying hot water.
Unplug unit from receptacle before
cleaning or maintenance.

P/N 2400205_J 4-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
CLEANING COILS
Condenser coils should be cleaned at least once
per month. Additional cleaning may be needed
depending on the operational environment.
Airflow blockage increases energy consumption
and reduces the merchandiser’s ability to
maintain operating temperature.
To clean fin coils, use a vacuum cleaner with
a wand attachment and a soft (non-metallic)
brush to remove dirt and debris. Do not bend
coil fins. Always wear gloves and protective eye
wear when cleaning near sharp fins and dust
particles. Unplug merchandiser before servicing.
Fin Coils
NEVER USE SHARP OBJECTS AROUND
COILS. Use a soft brush or vacuum brush to
clean debris from coils. Do not puncture coils!
Do not bend fins. Contact an authorized
service technician if a coil is punctured,
cracked, or otherwise damaged.
ICE in or on the coil indicates the refrigeration
and defrost cycle is not operating properly.
Contact an authorized service technician to
determine the cause of icing, and to make
adjustments as necessary. To maintain product
integrity, move all product to a cooler until
the unit has returned to normal operating
temperatures.
BUMPERS AND OPTIONAL KITS
Most scratches and dings can be removed
using the following procedure.
1. Use steel wool to smooth out the surface
area of the bumper.
2. Clean area.
3. Apply vinyl or car wax and polish surface
for a smooth glossy finish.
4. Make sure proper cleaning procedures are
followed. Lights and fans MUST be turned
off when a case is cleaned and MUST be
allowed to dry before turning power back on.
5. Do not use a pressure nozzle to clean inside
of case.
DO NOT FLOOD!
Use only enough water necessary to clean
surface. Water must not drip down the case!
Never use ammonia based cleansers, abrasive
cleansers, or scouring pads.
Always Wear gloves and protective eye wear when
servicing. Turn off evaporation pan heater, and allow
pan to cool.

4-4 Maintenance
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
Self-Contained Refrigeration Equipment Maintenance Check List
*****Warranty does not cover issues caused by improper installation or lackofbasic preventativemaintenance. *** **
Record starting date
Store Name and Number
Store Address
Unit Model Number
Unit Serial Number
Contractor/Technician
Technician
PMdate
PMactivity-For visualinspectionitems,denote"okor
complete" inthe column to right when PM has been
performed. Formeasured data requested, record data
requested inthe appropriate column to the right)
Quarterly Semi-
Annually
Ql Q2 Q3 Q4 Ql Q2 Q3 Q4
Check in with store manager, record any complaints or issues
they have with unit.
x
Lookunitover foranydamage,vibrationsorabnormalnoise.
x
Verify unit is level side to side and front to rear.
x
Confirm refrigerant lines properly are secured and not touching
or rubbing other lines, wires or frame work.
x
Verify fan motors and motor mounts are tight.
x
Confirm fan blade/s are tight and not rubbing or hitting.
x
Make sure all electrical connections, factory and field, are tight.
x
Verify electricalconnections at lamps are they secure and dry.
x
Check for and replace any frayed or chaffed wiring.
x
Check all electrical wiring make sure it is secured and not on
any sharp edges or hot lines.
x
Check for air disturbances externallto the unit. Heat and air
registers,fans, and doors etc.
x
Check for water leaks.
x
Clean evaporator coil/s and fan blade/s. Do not use an acid
base cleaner. Rinse off any cleaner residue.
x
Clean discharge air honeycombs or grilles. Do not use an acid
base cleaner. Rinse off any cleaner residue.
x
Clean condenser coil/s and fan blade/s. Do not use an acid base
Cleaner. Rinse off any cleaner residue.
x
Clean condensate drain pan and drain line.
x
Verify condensate drain lines are clear and functioning.
x
Record voltage reading at unit with unit off?
x
Verify condenser and evaporator fans are working.
x
Record condenser air inlet temperature
x
Record condenser air outlet temperature
x
Is condenser air inlet or air exhaust restricted or recirculating?
x
Verify there are no visualoil or refrigerant leaks.
x
Record voltage reading with unit running.
x
Record compressor amp draw.
x
Record defrost heater voltage and amp draw.
x
Record anti-sweat heater voltage and amp draw.
x
Record case product temperature.
x
Record unit discharge air temperature.
x
Record unit return air temperature.
x
Record ambient conditions around unit (wet Bulb temperature
and dry bulb temperature).
x
Check product loading, do not load beyond the units load limits.
x
Verify clearances onsides/back of unit.
x
Check unit controller for proper operation. See controller or 1/0
Manual for proper controller operation.
x
Confirm door switches function.
x
x
Verify that all the panels, shields and covers are in place.
Technician Notes:
Form HSCW03 Rev-29 OCTOBER13 P/N 0525210_C

P/N 2400205_J 5-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. SM Spot Merchandisers
SERVICE
TROUBLESHOOTING GUIDE
PROBLEM PROBABLE CAUSE SOLUTION
Compressor runs continuously
product too warm 1. Short of refrigerant 2. 2. Dirty condenser 1. Leak check, change drier, evacuate, and recharge
2. Clean
High head pressure
(High pressure switch on) 1. Cabinet location too warm 2. Restricted condenser air
ow
3. Defective condenser fan
motor
4. Air or non-condensable
gases in system
1. Relocate cabinet
2. Clean condenser to remove air
ow restriction
3. Replace
4. Leak check, change drier,
evacuate and recharge
Warm storage temperature 1. Temperature control not
set properly
2. Short of refrigerant
3. Cabinet location too warm
4. Low voltage, compressor
cycling on overload
5. Condenser dirty
1. Reset control.
2. Leak check, replace drier
evacuate and recharge
3. Relocate
4. Check power
5. Clean
Compressor runs continuously
product too cold 1. Adjust to warmer setting 2. Control feeler not in tube
properly
3. Short on refrigerant
1. Replace
2. Assure proper length in tube
3. Leak check change drier,
evacuate and recharge
Compressor will not start no
noise 1. Power disconnected 2. Defective or broken
wiring
3. Defective overload
4. Defective temperature
control
5. Blown fuse or breaker
1. Check service cords or wiring
connections
2. Repair or replace
3. Replace
4. Replace
5. Replace fuse or reset breaker
Compressor will not start
cuts out on overload 1. Low voltage 2. Defective relay
3. Restriction or moisture
4. Inadequate air condenser
5. Defective condenser fan
motor
1. Contact electrician
2. Replace
3. Leak check, replace drier,
evacuate and recharge
4. Clean condenser
5. Replace

5-2 service
P/N 2400205_J U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
Parts List
Models SM‐115W SM‐110W
Models SM‐115W SM‐110W
Models SM‐115W SM‐110W
Standard Parts
Descripon Part Number
Thermometer 1700559 XX
Caster w/ Break 1400516 X
Caster w/ Break 1400524 X
Power Cord/Main Harness NEMA 5‐15P 1800619 X X
Refrigeraon Thermostat 1700528 X X
High Pressure Indicang Light 1800629 X X
High Pressure Control 1700549 X X
Refrigeraon
Descripon Part Number
Condenser Fan Motor 1800618 X X
Condenser Fan Blade 1700156 X X
Drier (C052‐S) 1700481 X X
Cap Tube Assembly 7600524 X
Cap Tube Assembly 7600577 X
Compressor‐ Hermec (1/4) AE2410Z‐AA1A 0546974 X
Compressor‐ Hermec (1/3) 127/60AEA2411ZXA 3008656 X
Condenser 2100516 X X
Sheel Metal Replacement Parts Painted
Descripon Part Number
Access Panel ‐Black 0201554 X
Base Cover‐ Black 0201566 X