Hussmann MBC Quick guide

January 2006
HUSSMANN - GLOVERSVILLE
INSTALLATION & SERVICE
INSTRUCTIONS
FOR
MBC MULTI-DECK
GONDOLA INSERT
P/N OII – MBC
January 2006
First Call for help (US and Canada):
1-800-922-1919
Soporte Tècnico y Asistencia (Mèxico):
01-800-522-1900
For a Service Network Locator and other
Information visit us at
www.hussmann.com
select Worldwide Locations

2
SETTING MBC TEMPERATURE CONTROL
1. Hold down top button until R-1 appears
2. Go to R-5, push both buttons, set to F, push both again
3. Go to D=3, push both buttons, set to 6, push both again
4. Go to D-4, push both buttons, set to 30, push both again
5. Go to R-1, push both buttons, set to 8, push both again
6. Go to R-2, push both buttons, set to 45, push both again
7. Go to R-3, push both buttons, set to 30, push both again
Wait for actual temperature to appear. Push both buttons and set to 32.0. Push both
again. Push both a third time and let flash until it stops flashing.

TABLE OF CONTENTS
Model Description Page 4
Application Page4
Inspection upon Receipt Page 4
Shipping Page 4
Leveling Page5
Location Page5
Rear Close-Off Panel Page 5
Condensate Removal – Self Contained Page 5
Installing drip piping – Remotes Page 5
Exterior loading, Interior loading Page 6
CareandCleaning Page6
Electrical Page7
Refrigeration, Expansion Valve Adjustment, Refrigerant Page 7-8
Multiplexing, Line Sizing, Oil Traps, Pressure Drop Page 8
Insulation Page9
Controls and Adjustments Page 9
Temperature Controls Page 10
EKC Controls and Info Page 13
Controller Application setting parameters (if needed) Page 14
Warranty and Parts Information Page 11
Compressor Replacement Procedure Page 11

4
MODEL DESCRIPTION –
This instruction manual covers the mer-
chandisers listed below. All models are available
in 36” or 48” lengths.
MBC –Self-Contained Self Service
Beverage Case
MBCR –Remote Self Service Beverage
Case –Remote case requires a separate
condenser unit connection.
APPLICATION -
The MBCR and MBC refrigerated mer-
chandisers are designed for use only in air condi-
tioned stores where temperature and humidity
are maintained at or below 75ºFdrybulbtem-
perature and 55% relative humidity.
These Beverage Cases are intended for the
storage and display of non -potentially hazardous,
bottled or canned products only.
INSPECTION UPON RECEIPT–
All equipment should be thoroughly exam-
ined for shipping damage before and during un-
loading. This equipment has been carefully in-
spected at our factory and the carrier has as-
sumed responsibility for safe arrival.
If damage, either apparent or concealed, is
found a claim must be submitted to the carrier.
Apparent Loss or Damage –If there is ob-
vious loss or damage, it must be noted on the
freight bill or express receipt and signed by the
carrier’s agent; otherwise, the carrier may refuse
the claim. The carrier will supply necessary
forms.
Concealed Loss or Damage –When loss
or damaged is not apparent until after equip-
ment is uncrated, a claim for concealed damage
is made.
Upon discovering damage, make a re-
quest in writing to the carrier for inspection
within 15 days and retain all packing. The car-
rier will supply the inspection report and re-
quired claim forms.
SHIPPING –
Move the fixture as close as possible to
its permanent location and then remove all
crating. Check for damage before discarding
packing. Remove all separately packed accesso-
riessuchaskitsandshelves.
LEVELING –
Merchandisers must be installed level to
ensure proper operation of the refrigerant sys-
tem and to ensure proper drainage of defrost
water.
Levelers are shipped with the case and
should be installed in the same holes that the
skid bolts were installed in.
Place pry-bar under metal base and lift. DO
NOTLIFT END PANEL. Turn leveler, with
wrench clockwise to raise, and counter clock-
wise to lower. Repeat process with other level-
ers until case is level.
NOTE: To avoid removing concrete flooring,
begin lineup leveling from the highest point of
the store.

5
LOCATION –
Like other open merchandisers, these are
sensitive to air disturbances. Air currents pass-
ing around merchandisers will seriously impair
their operation. Do NOT allow air conditioning,
electric fans, open doors or windows, etc. to cre-
ate air currents around the merchandisers.
REAR CLOSE-OFF PANEL –
To perform electrical and refrigeration
work, remove the rear closure panel by removing
the sheet metal screws. Replace when work is
complete.
NOTE: Self Contained Models-Do note block
the vent openings on the rear closure panel.
These allow intake and exhaust air for the con-
densing unit. Vents only appear on self-
contained models.
CONDENSATE REMOVAL –Self Contained
On the self contained merchandisers the
waste outlet is centrally located and accessible
from the rear of the case.
The condensate water from the evaporator
drains out through the bottom of the evaporator
compartment into the condensing unit area into
a heated condensate pan.
The pan has a float that activates the
heater when sufficient water is in the pan.
INSTALLING DRAIN PIPING –Remotes
Poorly or improperly installed drip pipes
can seriously interfere with the merchandisers’
operation and result in costly maintenance and
product losses. Please follow the recommenda-
tions listed here when installing drip pipes to en-
sure proper installation.
1. Never use drip piping smaller than the
nominal diameter of the pipe or water
sealsupplies with the merchandiser.
2. Whenconnecting drip piping, the “water
seal” must be used as part of the drip pip-
ing to prevent air leakage or insect en-
trance. Never use two water seals in series
in any one drip pipe. Double water seals
in series will cause an air lock and prevent
draining.
3. Pitch the drip piping in the direction of
flow. There should be a minimum pitch of
1/8” per foot
4. Avoid long runs of drip piping. Long runs
make it impossible to provide the pitch
necessary for good drainage.
5. Provide a suitable air break between flood
rim of the floor drain and outlet of drip
pipe.
6. Prevent drip pipes from freezing:
a. Do not install drip pipes in contact
with insulated suction lines. Suction
lines should be insulated with a nonab-
sorbent insulation material.
b. When drip pipes are located in dead
air spaces, such as between merchan-
disers or between a merchandiser and
a store wall, provide means to prevent
freezing.

6
EXTERIOR LOADING –
Do NOT walk on top of merchandiser or
damage to the merchandiser and serious personal
injury could occur. They are not structurally de-
signed to support excessive external loading such
as the weight of a person.
INTERIOR LOADING –
In order to maximize product life, main-
tain a constant and proper product temperature
from the time the product is received through
storage, preparation and display.
Products should not be placed in merchan-
disers until all refrigeration controls have been
adjusted and merchandisers are at proper oper-
ating temperature. Again,air discharge and re-
turn air flue MUST be unobstructed at all times
to provide proper refrigeration.
CARE and CLEANING –
Long life and satisfactory performance of
any equipment is dependent upon the care it re-
ceives. To ensure long life, proper sanitation and
minimum maintenance costs, 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.
CAUTION –Shut power off during cleaning.
DO NOT USE –
•Mineral oil based solutions, as these will dis-
solve the butyl sealants used in the construc-
tions of the merchandisers.
•Abrasive cleansers and scouring pads, as
these will mar the finish.
DO –
•Remove the product and all loose debris
to avoid clogging the waste outlet.
•Thoroughly clean all surfaces with soap
and hot water. Do NOT use steam or
high water pressure hoses to wash the
interior. These will destroy the mer-
chandisers’ sealing causing leaks and
poor performance.
•Rinse with hot water but do NOT flood.
Never introduce water faster than the
waste outlet can remove it.
NOTE –Self-contained Models
The evaporator pan must be moni-
tored for overflow conditions. Provide
drainage if necessary. After cleaning and
rinsing, purge the pan of any standing w a-
ter.
•Care should be taken to minimize direct
contactbetween fan motors and cleaning
or rinse water.
•Allow the merchandisers to dry before
resuming operation.
At the back of this booklet there is a supple-
ment for sealing and cleaning of this unit.
Please read for further instructions.

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ELECTRICAL –
•Self-Contained Model Installation –Mer-
chandisers need only to be connected to a
120V / 60 hz electrical supply., and are sup-
plied with a 20 amp cord.
•Post Construction Clean-up –After the first
two weeks of a major store remodel or new
store operation, the grill should be removed
and the condensing unit and condenser face
cleaned due to the accumulated dirt and de-
bris generated during construction.
•Remote Model Installation –Connections –
All wiring must be in compliance with NEC
and local codes. Electrical connections for
refrigerated models are made in the electri-
cal box on the back of the case behind the
rear close-off panel.
•Field Wiring –Field wiring must be sized
for components amperes stamped on the se-
rial plate. Actual ampere draw may be less
than specified. Always check the serial
plate.
Evap Fan Light Condensate
Condensing
Minimum Fuse
Model Amps Amps Pan Amps Unit Amps Circuit
Amps Amps
Refrigerant ( * ) R-22 R-404A R-22 R-404A
MBC24-3661/74 0.38 0.15 5.0 10 9.2 16 14 20
MBC24-3684 0.38 0.35 5.0 10 9.2 16 14 20
MBC243661R/74R 0.38 0.15 N/A N/A N/A 15 15 15
MBC243684R 0.38 0.35 N/A N/A N/A 15 15 15
MBC24-4861/74 0.57 0.20 5.0 10 10.1 16 16 20
MBC24-4884 0.57 0.44 5.0 10 10.1 16 16 20
MBC244861R/74R 0.57 0.20 N/A N/A N/A 15 15 15
MBC244884R 0.57 0.44 N/A N/A N/A 15 15 15
Check Serial Plate for Refrigerant type and amount used. Self-Contained cases were changed from R-22 to
R-404a starting September, 2001.
REFRIGERATION –
Expansion Valve Adjustment
Expansion valves must be adjusted to fully feed the evaporator. To achieve the
proper setting, the merchandiser must first have been in operation long enough to have
reached the approximate intended operating temperature. Air flow should not be
restricted by heavy frost formation on the evaporator. Adjust valves as follows:

8
Attach two sensing probes (either thermocouple or thermistor) to the evaporator. One
under the clamp holding the expansion valve bulb and the other securely taped to the
evaporator inlet line as close to the coil as practical.
Some “hunting” of the expansion valve is normal. The valve should be adjusted so that
during the hunting the greatest difference between the two probes is 3º-5ºF for remote
merchandisers. With this adjustment, during a portion of the hunting the temperature
difference between the probes will be less than 3ºF (at times as low as 0ºF). Make
adjustments of no more than one-half turn of the valve stem at a time and wait for at least
15 minutes before rechecking the probe temperature and making further adjustments.
Self-contained merchandiser should be adjusted using the same technique with a
temperature difference of 6º to 8ºF.
REFRIGERANT–
The correct type of refrigerant will be stamped on each merchandiser’s serial plate
located inside the merchandiser.
Refrigerant Piping –(Remote Cases)
Connection Sizes Liquid Line 1/4” OD
Suction Line 3/8” OD
The refrigerant line connections are behind the rear close-off panel, underneath the
drain tub, on the left hand end of the merchandiser as viewed from the rear.
After connections have been made, seal this outlet thoroughly. Seal both inside and
outside. We recommend using an aerosol dispensed urethane type of insulation.
Multiplexing -
Piping of remoted merchandisers operating on the same refrigeration system may
be run from merchandiser to merchandiser through the end frame saddles provided for
this purpose
DO NOT RUN REFRIGERANT LINES THROUGH MERCHANDISERS THAT ARE
NOT ON THE SAME REFRIGERANT SYSTEM -as this may result in poor
refrigeration control and compressor failure.
Line Sizing –
Refrigerant line should be sized as shown on the refrigeration legend that is
furnished for the store (not furnished by Hussmann). If a legend has not been furnished,
refer to Hussmann Application Engineering Manual for guidance.

9
Oil Traps –
P-Traps (oil traps) must be installed at the base of all suction line vertical risers.
Pressure Drop–
Pressure drop can rob the system of capacity. To keep the pressure drop to a
minimum, keep the refrigerant line run as short as possible using a minimum number of
elbows. Where elbows are required, use long radius elbows only.
Insulation–
The suction and liquid lines should be clamped or taped together and insulated for a
minimum of 30’ from the merchandiser. Additional insulation is recommended wherever
condensation drippage is objectionable.
CONTROLS and ADJUSTMENTS –
The object of the controls and settings listed in this section is to maximize product
shelf life.
TEMPERATURE CONTROLS –
Discharge Air Temperature F 32
Evaporator Temperature F 20
Refrigerant Controls
Thermostat Cut-out F 32
Defrost Controls
Frequency (Qty per day) 4
Length of defrost (min) 30
ELECTRONIC CONTROLLERS –
On page 13 at the end of this booklet.
The control is factory set and should not need Field adjustment. If they do, use the
Quick Guide on the next page for reference.
SHELVING-
The MBC models come equipped with shelves. They are adjustable on one inch
increments. When loading the shelves with product, they should be loadedso that the
product does not extend over the front edge of the shelf. Product loaded over the edge will
interfere with air circulation in the cabinet. It is also desirable to leave a small space
between the rear interior wall and the product on the shelves to allow air to enter the
cabinet interior through the perforations in the rear wall.

10
The shelves are rated for 130 pounds each load capacity. When installing the
shelves, first install the shelf support bracket at the desired height. Place the rear of the
bracket in the desire slot. Raise the front of the bracket towards the rear of the cabinet.
Once the ends are in the slot, rotate the bracket forward locking it in place. Place the shelf
on the bracket. Load the product. The shelves are not to be slanted. They must remain in
a horizontal position.
QUICK GUIDE REFERENCE –At the end of the booklet on page 14
Controller application setting parameters
Settings and read-off parameters Parameter
Codes
Temperature controller, Temperature
Thermostat
Differential r01
Max. limitation of set temperature r02
Min. limitation of set temperature r03
Adjustment of temperature indication r04
Temperature unit (ºC/ºF) r05
Defrost
Interval between defrost starts d03
Max. defrost duration d04
Temperature alarm delay after defrost d11
Delay of display view after defrost stop d12