Hussmann Q2SSM4R User manual

®
Æ
Q2SSM4R, Q2SSM6R,
Q2SSM8R, Q2SSM12R
Medium Temperature
Remote Cases
Installation &
Operation Manual
P/N 3137884_A
February 2021
IMPORTANT
Keep in store for
future reference!
MANUAL- I/O Q2 SSM RMT
Spanish 3142765

P/N 3137884_A ii
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
© 2021 Hussmann Corporation
Merchandiser must operate for 24
hours before loading product!
Regularly check merchandiser
temperatures.
Do not break the cold chain. Keep products
in cooler before loading them into
merchandiser
These merchandisers are designed for
pre-chilled products only.
ATTENTION

TABLE OF CONTENTS iii
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R Merchandisers
ANSI Z535.5 DEFINITIONS .......... iv
INSTALLATION
UL Listing ......................... 1-1
Federal / State Regulation ............ 1-1
Hussmann Product Control ........... 1-1
Shipping Damage ................... 1-1
Location ........................... 1-1
Unloading ......................... 1-2
Exterior Loading .................... 1-2
Shipping Skid ....................... 1-2
Merchandiser Leveling ............... 1-3
Installation ......................... 1-3
Serial Plate Location ................. 1-4
Self-Contained Refrigeration Equipment
Start Up Check List ................. 1-5
ELECTRICAL / REFRIGERATION
Merchandiser Electrical Data .......... 2-1
Field Wiring ........................ 2-1
Electrical Connections . . . . . . . . . . . . . . . . 2-1
Electrical Outlet ..................... 2-1
Wiring Color Code .................. 2-2
START UP / OPERATION
Start-Up ........................... 3-1
TEV Adjustment .................... 3-1
Load Limits ........................ 3-1
Stocking ........................... 3-1
Thermometer ....................... 3-2
Load Limits ........................ 3-2
MAINTENANCE
Care and Cleaning ................... 4-1
Removing Scratches from Bumper ...... 4-2
Cleaning Under Fan Plenum .......... 4-2
Cleaning Discharge Air Louvers ....... 4-2
Cleaning Stainless Steel Surfaces ....... 4-3
Cleaning Coils ...................... 4-3
Self-Contained Refrigeration Equipment
Maintenance Check List .............. 4-5
SERVICE
Replacing Fan Motors and Blades ...... 5-1
Replacement Parts List ............... 5-2
APPENDIX
Shipping Weights . . . . . . . . . . . . . . . . . . . A-1
Wiring Diagrams ................... A-2
WARRANTY

REVISION HISTORY
ORIGINAL ISSUE — FEBRUARY 2020
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 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
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 3137884_A1-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R 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 / 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 uncrated, 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
Recommended operating ambient
temperature is between 65°F (18°C)
to 75°F (23.9°C). Maximum relative
humidity is 55%.

1-2 InstallatIon
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
UNLOADING
Unloading from Trailer:
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 top of the crate and detach walls
from each other. Lift crate from the skid.
Unscrew the case from the skid. The fixture
can now be lifted off the crate skid. Lift only at
base of skid! Remove any braces and/or skids
attached (blanket wrapped merchandiser may
have skids).
DO NOT LAY MERCHANDISER OVER
ON THE FLOOR TO REMOVE SKID.
Once the skid is removed, the merchandiser
must be lifted —NOT PUSHED— to reposition.
To remove the skid, remove screws attaching
skid to the merchandiser.
Check floor where cases 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.

P/N 3137884_A1-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R Merchandisers
MERCHANDISER LEVELING
Be sure to position merchandisers properly.
Level the merchandiser by all four corners.
Merchandiser(s) must be installed level to
ensure proper operation of the refrigeration
system, and to ensure proper drainage of
defrost water.
All cases were leveled and joined prior to
shipment to insure the closest possible fit when
cases are joined in the field. When joining, use
a carpenters level and adjust legs accordingly.
The legs on the Q2-SSM are adjustable and do
not require shims. Simply screw the leg up or
down to adjust height.
INSTALLATION
1. Using case blueprints, measure off and
mark on the floor the exact dimensions of
where the cases will sit. Snap chalk line
for front and back positions of base rail or
pedestal. Mark the location of each joint front
and back. Find the highest point throughout
the lineup.
FLOORS ARE NORMALLY NOT LEVEL!
Determine the highest point of the floor; cases
will be set off this point. All cases in the entire
lineup must be brought up to the highest level
of the case sitting at the highest point in the
lineup. This may be done a few different ways.
a. Walk the floor looking for any mounds or
dips.
b. Use a string level.
c. Use a transit.
If a wedge is used in the middle of a lineup,
the wedge must be set on the highest point on
the floor FIRST, with the rest if the lineup
being leveled from it. The Q2-SSM case has
adjustable legs to allow for leveling.
2. Set first case over the highest part of the
floor and adjust legs so that case is level.
Remove side and back leg braces after case is
set and joined.
3. Set second case within one foot (1’) of
the first case, and remove leg skids. Keep the
supports along the length of the case and far
end of case. Level case to the first using the
instructions in step one.
4. Apply masking tape 1/8"in from end of
case on inside and outside rear mullion and
body work on both cases to be joined.
5. Apply liberal bead of case joint sealant
(butyl) to first case. Sealant area is shown
using a dotted line in illustration in Step 8.
Apply heavy amount to cover entire shaded
area.
DO NOT USE PERMAGUM!
6. Slide second case up to first case snugly,
then level.
7. To compress butyl at joint, use two
Jurgenson wood clamps. Make sure case is
level from front to back and side to side on
inside bulkheads at joint.
This equipment is to be installed to
comply with the applicable NEC,
Federal, State , and Local
Plumbing and Construction Code
having jurisdiction.
ATTENTION
INSTALLER
Do not use bolt to pull cases together.

1-4 InstallatIon
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
8. Attach sections together via the bolts pictured
in the illustration below.
9. Apply bead of butyl to top of bulk heads
and slip on stainless steel bulkhead cap. Also
apply silicone to seam between joints.
10. Use finger to smooth silicone as thin as
possible at masking tape on inside and outside
of rear mullion (apply additional silicone if
necessary). Remove tape applied on line #4.
11. Remove front, back and end shipping braces.
Q2-SSM Refrigerated Wedges and Standard Cases
Line up taper pins and line-up plates with holes
on adjoining case. Bolting is located at the rear
of the case, behind the air discharge wall, and
behind the front body panel.
The cases are bolted together in front by means
of a bracket located behind the front panel.
Remove the front panel by unscrewing these
bottom screws.
Serial Plate
8 ft merchandiser shown
Model Q2SSM8R
LINE-UP PIN (INSERT
INTO UPPER 1/2"HOLE)
CASE BOLTING (USE
3/8"-16 x 1 1/2"BOLT IN
LOWER HOLE)
SERIAL PLATE LOCATION
The serial plate is located on the inside of the
merchandiser’s display area as shown below.
CASE BOLTING (USE
3/8"- 16 x 1 1/2"BOLT
IN HOLE)
LINE UP PLATE (INSERT
INTO VERTICAL SLOT)
FRONT CASE BOLT
(USE 3/8" ½"
BOLT IN HOLE)

P/N 3137884_A1-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R 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 InstallatIon
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
NOTES:

P/N 3137884_A2-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R Merchandisers
MERCHANDISER ELECTRICAL DATA
Refer to the technical data sheets and merchandiser
serial plate for electrical information.
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
All wiring must be in compliance with NEC
and local codes.
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
Refrigeration lines are under pressure.
Refrigerant must be recovered before
attempting any connection or repair.

2-2 ElEctrIcal / rEfrIgEratIon
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
WIRING COLOR CODE
CASE MUST BE GROUNDED NOTE:
Refer to label affixed to case to determine the
actual configuration as checked in the “Type
Installed” boxes.
Electrical Circuit Identification Standard
lighting for all models will be full length
fluorescent lamps located within the case at
the top. The switch controlling the lights,
the plug provided for digital scale, and the
thermometer are located at the rear of the case
mullion.
The receptacle that is provided on the
exterior back of these models is intended for
computerized scales with a five amp maximum
load, not for large motors or other high
wattage appliances. It should be wired to a
dedicated circuit.
Electrical Service Receptacles (When
Applicable) The receptacles located on the
exterior of the merchandiser are intended
for scales and lighted displays. They are not
intended nor suitable for large motors or other
external appliances.
Field Wiring and Serial Plate Amperage Field
Wiring must be sized for component amperes
printed on the serial plate.
— 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.
Standard Case Wire Color Code
Color Description
Color
Ground ................................................................................
Green
Anti-Sweat ...........................................................................
Purple
Lights ...................................................................................
Orange
Receptacles..........................................................................
Yellow
Thermostat/Solenoid 230VAC..............................................
Red/Black
Thermostat/Solenoid 115VAC..............................................
White/Blac
k
Thermostat/Solenoid 24VAC ...............................................
Red/White
Fan Motors ..........................................................................
Brown
Blue Condensing Unit
Use Copper Conductors Only
430-01-0338 R101003
Actual ampere draw may be less than specified.
Field wiring from the refrigeration control panel
to the merchandisers is required for refrigeration
thermostats. Case amperes are listed on the wiring
diagram, but always check the serial plate.
LED Driver Location Drivers are located within
the access panel that runs the length of the rear of
the case. Refer to diagrams.
Ashrae Color Code
NOTE: All other manufacturers have no standard
sensor codes.
Waste Outlet and P-TRAP e waste outlet
is located o the center of the case on one side
allowing drip piping to be run lengthwise under
the fixture.
A 1-1/2"P-TRAP and threaded adapter are supplied
with each fixture. e P-TRAP must be installed
to prevent air leakage and insect entrance into the
fixture.
NOTE: For installation or maintenance of the
P-TRAP, use only adhesive compatible with ABS
ttings. - Item # 18s279

P/N 3137884_A3-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R Merchandisers
START UP / OPERATION
START UP
Follow the controller start up procedures as
detailed in Section 3 of this manual.
Each self-contained merchandiser has its
own evaporator coil and a preset thermostatic
expansion valve (TEV). The TEV has been
factory set at design conditions to provide the
recommended performance.
TEV ADJUSTMENT
Expansion valves may be adjusted to fully feed
the evaporator. Before attempting to adjust
valves, make sure the evaporator is clear or only
lightly covered with frost, and the merchandiser
is within 10°F of its expected operating
temperature.
Adjust the valve as follows:
1. Attach a probe to the suction line near the
expansion valve bulb.
2. Obtain a pressure reading from the factory
installed Schraeder valve. Convert the pressure
reading to a saturated temperature for the refrigerant.
Temperature (b) minus Temperature (a) is the
superheat. The valve should be adjusted so that
the greatest difference between the two temperatures
is 3°F to 5° F.
Make adjustments of no more than ½turn of
the valve stem at a time and wait for at least 15
minutes before rechecking the probe temperature
and making further adjustments.
LOAD LIMITS
Each merchandiser has a load limit decal. Shelf
life of perishables will be short if load limit is
violated.
At no 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.
Air discharge and return flues must remain open
and free of obstruction at all times to provide
proper refrigeration and air curtain performance.
Do not allow product, packages, signs, etc. to
block these grilles. Do not use non-approved
shelving, baskets, display racks, or any accessory
that could hamper air curtain performance. Do
not allow product to be placed outside of the
designated load limits in the illustration above.
LOAD LIMIT

3-2 start up / opEratIon
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
THERMOMETER
Q-Series models have a solar thermometer. The
thermometer is located at the top interior of the
merchandiser.
LOAD LIMITS
Do not stock shelves above load limit decals.
Shelf life of perishables will be short if load
limit is violated. At no time should the mer-
chandisers be stocked beyond the load limits
indicated. Do not exceed load limit lines shown
in the illustrations.
LOAD LIMIT LINE
FACE SIDE
LOAD LIMIT LINE
FACE SIDE
Product will be degraded and may spoil if
allowed to sit in a non-refrigerated area.

P/N 3137884_A4-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R Merchandisers
CARE AND CLEANING
Long life and satisfactory performance of
any equipment is dependent upon the care it
receives. To ensure long life, proper sanitation
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:
•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.
•Disconnect electrical power before cleaning.
•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.
•Take care to minimize direct contact between
fan motors and cleaning or rinse water.
•Do NOT flood merchandiser with water.
NEVER INtRoDuCE wAtER fAStER tHAN tHE
wAStE outLEt CAN REMoVE It.
SELf CoNtAINED MoDELS EMpty INto AN
EVApoRAtIoN pAN tHAt wILL oVERfLow If
too MuCH wAtER IS INtRoDuCED DuRING
CLEANING.
•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 MaIntEnancE
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
REMOVING SCRATCHES FROM
BUMPER
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.
CLEANING UNDER FAN PLENUM
After cleaning be sure the plenum is properly
lowered into position or product loss will
result due to improper refrigeration.
CLEANING DISCHARGE AIR LOUVERS
Discharge air louvers should be cleaned
every six months. Dirty louvers will cause
merchandisers to perform poorly. The
louvers may be cleaned with a vacuum cleaner.
Soap and water may be used if all water is
removed from the louvers cells before replacing.
Be careful not to damage the louvers.
SHUT FANS OFF DURING
CLEANING PROCESS.
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.
Power
Connector
— 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 3137884_A4-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R Merchandisers
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 COILS
Condenser coils should be cleaned at least once
per month. Additional cleaning may be needed
depending on the operational environment. A
dirty condenser blocks normal airflow through
the coils.
Airflow blockage increases energy
consumption and reduces the merchandiser’s
ability to maintain operating temperature.
To clean the 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 coil fins
and dust particles.
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.

4-4 MaIntEnancE
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
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.
PRECAUTION
CLEANING PRECAUTIONS
When Cleaning:
• Do not use high pressure water hoses
• Do not introduce water faster than waste outlet can
drain
• NEVER INTRODUCE WATER ON SELF
CONTAINED UNIT WITH AN EVAPORATION PAN
• NEVER USE A CLEANING OR SANITIZING
SOLUTION THAT HAS OIL BASE (these will dissolve
the butyl sealants) or an AMMONIA BASE (this will
corrode the copper components of the merchandiser)
• TO PRESERVE THE ATTRACTIVE FINISH:
• Use a water and a mild detergent for the exterior only
• Do NOT use a chlorinated cleaner on any surface
• Do NOT use abrasives or steel wool scouring pads
(these will mar the finish)

P/N 3137884_A4-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A. Q2SSM-R Merchandisers
Self-ContainedRefrigeration Equipment Maintenance Check List
*****Warranty does not cover issues caused by improper installation or lackof basicpreventative maintenance.*****
Record starting date
Store Name and Number
Store Address
Unit ModelNumber
Unit Serial Number
Contractor/Technician
Technician
PM date
PMactivity-Forvisualinspectionitems,denote"okor
complete" in the column to right when PM has been
performed. For measured data requested, record data
requested in the 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
Lookunitoverfor anydamage,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 otherlines, wires or frame work.
x
Verify fan motors andmotor mounts are tight.
x
Confirm fan blade/s are tight andnot rubbing or hitting.
x
Make sure all electrical connections, factory andfield, are tight.
x
Verify electrical connections at lamps are theysecure and dry.
x
Check for andreplace 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
Cleanevaporator coil/s and fan blade/s. Do not use an acid
base cleaner. Rinse off anycleaner 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 clearand functioning.
x
Record voltagereading at unit with unit off?
x
Verify condenser andevaporator fansare 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 refrigerantleaks.
x
Record voltage reading with unit running.
x
Record compressor amp draw.
x
Record defrost heater voltage and amp draw.
x
Record anti-sweatheater 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 aroundunit (wet Bulb temperature
anddry bulb temperature).
x
Check product loading, do notloadbeyond the units loadlimits.
x
Verify clearances onsides/back of unit.
x
Check unit controller for properoperation. See controller or 1/0
Manual for proper controller operation.
x
Confirm doorswitchesfunction.
x
Verify unit doors and lids work and are sealed correctly.
x
Verify that all the panels, shields and covers are in place.
x
Technician Notes:
Form HSCW03Rev-29 OCTOBER13 P/N0525210_C

4-6 MaIntEnancE
P/N 3137884_A U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
NOTES: