Hussmann AB Operating instructions

AB
UPRIGHT MEAT DISPLAY CASE
P/N IGUP-AB-0408
INSTALLATION & OPERATION GUIDE
/CHINO
AB UPRIGHT MEAT DISPLAY CASE REV. 0408
Installation
& Operation
Manual

IGUP-AB-0408
2
/CHINO
A publication of HUSSMANN®Chino
13770 Ramona Avenue • Chino, California 91710
[phone] FAX
[phone]
[phone]
Keep this booklet with the case at all times for future reference.
General Instructions
Table of Contents
General Instructions.....................................................2
Important Information ..................................................3
Cut and Plan Views ......................................................4
NSF Installation Requirement .....................................5
Installation.....................................................................5
Location ..................................................................................... 5
Uncrating the Stand................................................................... 5
Exterior Loading......................................................................... 5
Plumbing .......................................................................6
Waste Outlet and P-TRAP......................................................... 6
Installing Condensate Drain....................................................... 6
Fractal Humidity System..............................................6
General Information................................................................... 6
Controller Settings ..................................................................... 8
Models “SCH and SCHMS” - Emitter Nozzle Cleaning
Instructions............................................................................. 9
Trouble Shooting Guide .......................................................... 10
Major System Components ..................................................... 10
Refrigeration ............................................................... 11
Refrigerant Type ...................................................................... 11
Refrigeration Lines................................................................... 11
Control Settings ....................................................................... 11
Access to TX Valves and Drain Lines...................................... 11
Electronic Expansion Valve (Optional)..................................... 11
Thermostatic Expansion Valve Location.................................. 11
Expansion Valve Adjustment ................................................... 11
Measuring the Operating Superheat........................................ 11
T-STAT Location ...................................................................... 11
Electrical......................................................................12
Wiring Color Code ................................................................... 12
Electrical Circuit Identication.................................................. 12
Electrical Service Receptacles (When Applicable) .................. 12
Field Wiring and Serial Plate Amperage.................................. 12
Ballast Location ....................................................................... 12
Wiring and Serial Plate Amperage........................................... 12
Ashrae Color Code .................................................................. 12
User Information.........................................................13
Non-glare Glass....................................................................... 13
Maintenance................................................................13
Electrical Precautions .............................................................. 13
Replacing Fluorescent Lamps ................................................. 13
Tips and Troubleshooting ........................................................ 13
Electrical Wiring Diagrams........................................13
Wiring Diagram ........................................................... 14
Appendices .................................................................17
Appendix A. - Temperature Guidelines - Refrigerated ............. 17
Appendix B. - Application Recommendations - Refrigerated... 17
Appendix C. - Field Recommendations - Refrigerated ............ 17
Appendix D. - Recommendations to User - Refrigerated ........ 18
This Booklet Contains Information on:
AB: Upright Refrigerated Meat Display Case
Shipping Damage
All equipment should be thoroughly examined for shipping
damage before and during unloading.
This equipment has been carefully inspected at our factory
and the carrier has assumed responsibility for safe arrival.
If damaged, either apparent or concealed, claim must be
made to the carrier.
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. The carrier will
supply necessary claim forms.
Concealed Loss or Damage
When loss or damage is not apparent until after equipment
is uncrated, a claim for concealed damage is made. Make
request in writing to carrier for inspection within 15 days,
and retain all packaging. The carrier will supply inspection
report and required claim forms.
Shortages
Check your shipment for any possible shortages of
material. If a shortage should exist and is found to be the
responsibility of Hussmann Chino, notify Hussmann Chino.
If such a shortage involves the carrier, notify the carrier
immediately, and request an inspection. Hussmann Chino
will acknowledge shortages within ten days from receipt
of equipment.
Hussmann Chino Product Control
The serial number and shipping date of all equipment
has been recorded in Hussmann’s les 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, in order to provide
the customer with the correct parts.
This equipment is to be installed
to comply with the applicable
NEC, Federal, State , and Local
Plumbing and Construction
Code having jurisdiction.

Rev. 0408
3
Important Information
The AB Meat merchandisers are easy to work, attractive
merchandising display cases capable of maintaining
superb product quality, with the installation of the proper
controlling devices. These should be set according to the
manufacturer’s specications and combined with a properly
maintained humidity system. Incorrect settings and failure
to maintain the humidity system will result in short product
life from dehydration, shrinkage and discoloration. Below
are a few guidelines to ensure optimum performance and
product life.
• Review the Case Specication in this book to verify
thermostat setting. Do not set temperature too cold,
as this causes product dehydration.
• Temperatures should be achieved by a
T-STAT and suction solenoid at each case. Do
not use EPR valves, liquid line solenoids or
electronic control devices of any kind. These
controls allow temperature swings causing
product dehydration and excessive energy
consumption.
• Defrost cycles should be set according to the Case
Specications in this book
• Clean humidity system a minimum of every 90 days
for proper system operation.
• Work and rotate product - not to exceed a four (4)
hour period.
• At night turn off case lights and cover product with
moistened cheese cloth or fabric towels.
• Keep meat holding box at 32°.
• Keep meat prep room refrigerated at 55°.
• Meat bloom box (if applicable) should be at 36°.
• Meat must enter the case at 40° or below. Product
deterioration is very rapid above 40°.
• Maintain sanitary conditions throughout the meat
holding, prep and working areas.
• Do not display product directly within the air
discharge.
• Turn and rotate the meat. The blood which gives
the pink color works down in time which causes
surface discoloration and dehydration. When
turned before this condition occurs the other
side is kept in good color (bloom) condition. The
meat can even be turned (3) three and (4) four
times.
• It is not required at night to remove the product
from the case. Turn the lights off at night and
cover the product. We recommend you use a
moistened cheesecloth or towels. This helps
slow down the product dehydration process by
taking the moisture from the cloth and not from
the product. This is an old method that meat
shops have used for many years. It works and
helps to gain extended product life.
• Cold coils remove heat and moisture from the
case and deposit it as frost on the coil. Thus
a defrost is required to remove this frost. Our
humidity system adds moisture to the case and
helps slow down the dehydration process. The
only other moisture in the case is in the product.
A single level of meat in a case will dry out much
faster than a fully loaded case with three to four
levels of meat.
• The colder the case, the faster the product loses
its moisture and shelf life. It is very important to
maintain a constant even product temperature
(see Case Specications).

IGUP-AB-0408
4
WIRE RACK
BALLAST
HUMIDITY SYSTEM
28 1/8"
85 5/16"
49"
28"
WATER SUPPLY
TO HAND VALVE
BALLAST & TERMINAL
BLOCKS
T5 LAMP
HUMIDITY SYSTEM DRAIN
SLIDING DBL-PANE
GLASS DOOR
44.5"X 54" (44.5"X 66")
BALLAST LOCATION
ELECTRICAL
6”
1.2” Komacel walls
28 1/8"
60" (72")
Cut and Plan Views

Rev. 0408
5
PER NSF INSTALLATION REQUIREMENT
SEAL AROUND CASE TO BASE PERIMETER
WITH NSF APPROVED SEALANT
Installation
NSF Installation Requirement
Location
The refrigerated merchandisers have been designed
for use only in air conditioned stores where temperature
and humidity are maintained at or below 75°F and 55%
relative humidity. DO NOT allow air conditioning, electric
fans, ovens, open doors or windows (etc.) to create air
currents around the merchandiser, as this will impair its
correct operation.
Product temperature should always be maintained at a
constant and proper temperature. This means that from the
time the product is received, through storage, preparation
and display, the temperature of the product must be
controlled to maximize life of the product.
Uncrating the Stand
Place the xture as close to its permanent position as
possible. Remove the top of the crate. Detach the walls
from each other and remove from the skid. Unbolt the case
from the skid. The xture can now be lifted off the crate
skid. Lift only at base of stand!
Exterior Loading
These models have not been structurally designed to
support excessive external loading. Do not walk on their
tops; This could cause serious personal injury and damage
to the xture.
DO NOT SEAL JOINT TRIM TO FLOOR!

IGUP-AB-0408
6
Waste Outlet and P-TRAP
The waste outlet is located off the center of the case on
one side allowing drip piping to be run lengthwise under
the xture.
A P-TRAP must be installed to prevent air leakage and
insect entrance into the xture. (P-TRAPS are not supplied
with these cases.)
NOTE: PVC-DWV solvent cement is recommended.
Follow the manufacturer’s instructions.
Installing Condensate Drain
Poorly or improperly installed condensate drains can
seriously interfere with the operation of this refrigerator, and
result in costly maintenance and product losses. Please
follow the recommendations listed below when installing
condensate drains to insure a proper installation:
1. Never use pipe for condensate drains smaller
than the nominal diameter of the pipe or P-TRAP
supplied with the case.
2. When connecting condensate drains, the P-TRAP
must be used as part of the condensate drain
to prevent air leakage or insect entrance. Store
plumbing system oor drains should be at least 14”
off the center of the case to allow use of the P-TRAP
pipe section. Never use two water seals in series in
any one line. Double P-TRAPS in series will cause a
lock and prevent draining.
3. Always provide as much down hill slope (“fall”) as
possible; 1/8” per foot is the preferred minimum.
PVC pipe, when used, must be supported to
maintain the 1/8” pitch and to prevent wraping.
4. Avoid long runs of condensate drains. Long runs
make it impossible to provide the “fall” necessary for
good drainage.
5. Provide a suitable air break between the ood rim of
the oor drain and outlet of condensate drain. 1” is
ideal.
6. Prevent condensate drains from freezing:
a. Do not install condensate drains in contact with
non-insulated suction lines. Suction lines should
be insulated with a nonabsorbent insulation
material such as Armstrong’s Armaex.
b. Where condensate drains are located in dead
air spaces (between refrigerators or between a
refrigerator and a wall), provide means to prevent
freezing. The water seal should be insulated to
prevent condensation.
Plumbing
Fractal Humidity System
General Information
The Service Case Humidication system is an automatic
moisture maintenance system designed to raise humidity
levels in any new or existing service case counter or
refrigerated oral display. It delivers a damp fog into the
service case or oral display at selected intervals by using
a combination of air and water.
The system consists of a humidication nozzle assembly,
water filtration/regulator unit, remote timer, and air
compressor unit (see attached diagram).
Please Read All Instructions before
Beginning Installation
1. Installation of Regulator Assembly and water
hookup Procedure -
a. Tie into the water supply line under or near the
service case or oral display by using either a
compression or sweat “Tee” tting with a 1/2”
FPT. (In cases of new store construction, the
appropriate 1/2” FPT tting may already be
stubbed up under the case).
b. Screw the provided 1/4” x 1/2” MPT gray plastic
push-in ling into the 1/2” FPT water tting.
c. To connect tubing for water, push one end of the
1/4” black poly tubing into the plastic push-in tting
at the “Tee”. Measure and cut tubing to length
and insert the opposite end of tubing into the 1/4”
push-in tting on the Regulator Assembly marked
“CITY WATER”.
d. Connect another length of black poly tubing to the
push-in tting (or plastic push-in “Tee” for
SCH-2) labeled "WATER" on the Regulator
Assembly. Measure and cut this piece of tubing
to length and connect the opposite end to the
push-in elbow tting on the back of the nozzle
assembly. It may be necessary to drill access
holes through the bottom of the case for the
tubing lines - if so, ensure these holes are sealed
with silicon or similar substance.
Technical Procedures are now Complete
2. Start-up, Testing and Adjustment Procedures
a. Turn water on. Pressure gauge on Regulator
Assemblies should read approximately 1-4 psi.
b. Set Timer at each station for a 60 second
“On Time” and 1 minute “Off Time” cycle.
(SEE ATTACHED CONTROLLER SETTING
INSTRUCTIONS!) This setting, is for testing, on
and will allow enough time for the water to 1111
the line and reach the nozzle.
c. Plug in the Controller to the 115V outlet.
Compressor and solenoid valves will activate and
plumes from nozzles will independently appear
shortly thereafter.

Rev. 0408
7
d. If humidity plume is too light or too heavy. Adjust
the Regulator accordingly. Adjust water pressure
by lifting up the yellow locking cap on the top of
the Regulator and turn clockwise (to increase
pressure) or counter- clockwise (to decrease
pressure). Make Regulator adjustments ONLY
when system is running. Push down on cap to
relock the regulator on the desired pressure.
e. A desired setting would be a pressure that
provides a solid constant plume from the
nozzle(s), but shuts off cleanly when the cycle
ends. If the nozzle(s) continue to emit a stream of
water or drip at shut-off, the pressure should be
decreased.
f. On completion of testing/adjustment, reset
Controller to recommended “On/Off" settings
as per Owner’s Guide which is included in the
packing carton.
g. Carry out training on tip cleaning and Timer
settings with department manager and/or staff.
3. Warranty Conditions - The SCH system carries a
one year limited Parts Only warranty. Fractal Inc.,
will replace component parts that are found to be
defective through normal operation or workmanship
during manufacture.
a. Performance problems that are directly related to
poor water quality are not the responsibility of the
manufacturer.
THE MANUFACTURER WILL NOT BE RESPONSIBLE
FOR EQUIPMENT PERFORMANCE PROBLEMS
(DURING OR AFTER INSTALLATION). IF
INSTALLATION, ADJUSTMENT, AND TRAINING IS
NOT CARRIED OUT IN ACCORDANCE WITH THESE
INSTRUCTIONS. INSTALLING CONTRACTORS
SHOULD BE AWARE THAT 24 HOUR SERVICE
ASSISTANCE IS AVAILABLE BY CALLING THE
ABOVE TELEPHONE NUMBERS.
Fractal Humidity System (Cont'd)
Hex Nut Air Cap
Fluid Cap
Nozzle Body
Lock Nut
for bracket mount
HUMIDIFICATION
NOZZLE ASSEMBLY
REGULATOR/WATER
FILTRATION PACK
INCOMING
CITY WATER
SHUT-OFF
VALVE MESH SCREEN
WATER REGULATOR
AND PRESSURE
GAUGE
SOLENOID
VALVE ORIFICE REDUCER
MESH SCREEN
WATER TO
NOZZLE
AIR PRESSURE
GAUGE

IGUP-AB-0408
8
Recommended operation times: You should adjust your
humidication time for your stores needs~ This is because
each service case and oral display differs in temperature,
humidity, case style and volume. See chart below for
sample timings,
Application Off Time On Time
Seafood 5 min 30 sec
Meat 5 min 30 sec
Deli 10 min 30 sec
Floral 10 min 60 sec
Humidication nozzle assembly: The humidication
nozzle assembly is typically located at one end of the
service case aimed towards the opposite end. The
humidication nozzle is specially designed to precisely
mix air and water providing the desired humidity level.
System maintenance and cleaning: (See also attached
Cleaning Instructions) It is recommended that you clean
the humidication nozzle (tip) periodically, especially in
areas with water that contain a high content of solids.
Unscrew the hex nut and remove the air and uid caps
from the main nozzle body, Soak the caps in a hot water
and Efferdent@ solution for approximately 20 minutes,
rinse and replace.
Remote timer operation; (See also attached Timer
Setting Instructions) The remote timer has two dials
used for setting times. The dial labeled “T ON” represents
the amount of time the operating cycle is to remain on.
Each number equals one minute, the dial labeled “T OFF”
represents the delay between operating cycles. Each
number equals one minute. Example: If you want two
minutes of mist every ten minutes, set the dial labeled “T
ON” at 2 and set the dial labeled “T OFF” of 10.
Troubleshooting: See attached drawings and helpful tips,
however should any further assistance be required, please
call Fractal Inc., Service Dept. at 1-800-338 6478.
Controller Settings
For Service Case Humidication System Models SCH1/
SCH2 - Single Station
The SCH controller should be installed using the suggested
factory settings for the mist.
“On Time” and “Off Time” as outlined in the Owner’s Guide.
However, it is up to the department manager’s discretion to
adjust these settings to best suit each application. The left
column of switches controls “Off Time” in minutes and the right
column of switches controls “On Time” time in seconds.
1. To adjust mist “ON TIME”: Set the desired length
of Mist by sliding the appropriate numbered switch
to the right, or “On” position.
2. To adjust mist “OFF TIME”: Set the desired
interval of Mist by sliding the appropriate numbered
switch to the right, or “On” position.
NOTES:
1. To delete previous settings, slide switches back to
the left or “Off” position.
2. Numbers can be combined for total time “On” or
“Off” by sliding more than one switch to the “On”
position. Power light should be illuminated at all
times when power is connected.
3. “On Cycle” light will illuminate only during Misting
cycle.
4. For manual operation or for testing, slide switch
marked “Test” to the “On” position and slide all other
switches to the “Off ” position.
TEST
1
3
5
10
21
48
85
8
16
32
64
128
256
512
1
2
4
OFF ON
POWER
OFF ON
POWER
OFF TIME
IN MINUTES
ON TIME
IN MINUTES
WARNING: Controller must be properly grounded to ensure
proper operation. Electrical power must be disconnected
prior to hook-up or service. Follow all applicable local
electrical codes.
For Service:
Call your local Authorized Service Agency or contact:
FRACTAL INC.
9375 SW Commerce Circle #9
Wilsonville, OR 97070
[phone]
(800) 338-MIST (6478)
Fractal Humidity System (Cont'd)

Rev. 0408
9
Models “SCH and SCHMS” - Emitter Nozzle Cleaning Instructions
If the nozzle appears plugged or seems to sputter, it may be that some particles or mineral buildup has occurred in the
uid body of orice. Follow these simple instructions to solve the problem. Also, depending on the quality of the local
water supply, regular cleaning should be carried out as a matter of course.
Step 1: Unplug the controller.
Step 2: Bracing the nozzle body with one hand, carefully loosen the hex nut Cap on the front of the emitter nozzle,
and remove (be careful not to lose the Air Cap when you remove the Hex Nut).
Step 3. Remove the uid Body from the nozzle body and look through it towards a light. If you cannot see daylight,
simply rinse under a hot water and blow through the orice until the blockage is cleared. For more severe
mineral deposits, soak the Fluid Body in an Efferdent solution for approximately 15 minutes, rinsing afterwards.
Do Not insert needles or similar sharp points into the orice as this will enlarge the size and affect spray
performance.
Step 4: Replace the Fluid Body back into the main body (black “O” ring end in rst).
Step 5 Making sure the Air Cap is sitting ush inside, screw on the Hex Nut and tighten.
Step 6: Plug in controller.
ALUMINIUM BRACKET
LOCK NUT
1/4” PLUG-IN
ELBOW
WATER LINE “IN”
10/32” x 1/4”
NICKEL PLATE
CONNECTOR
AIR LINE “IN”
NOZZLE BODY
HEX NUT
CAP
AIR CAP
FLUID BODY
Fractal Humidity System (Cont'd)

IGUP-AB-0408
10
Trouble Shooting Guide Major System Components
Problem Possible Cause / Remedy
Compressor not running • Loss of power to controller. Check
110V supply and in-store breaker.
Part Number Description
10263 Air Compressor
10578 1/8” 110V Mini Solenoid Valve
• Loss of power to compressor.
Check for loose wires on controller
module.
10762 Timer Module ( Pin plug-in)
10264 8 Pin Base
10193 110V Relay
10024 1/4” Brass Shutoff Valve
No Humidity Plume • Water turned off. Check main
water supply to regulator unit.
10904/l/4/15lbs Pressure Gauge
10716 Water Regulator
• Water tubing contacting ice/frozen
product. Thaw and insulate.
SCHNOZSA Nozzle Sub-Assembly
SCHBRKTSA Bracket Mounted nozzle Sub-
Assembly
• Solenoid valve not opening.
Check 110V power from controller. SCHVSA Valve/Regulator Sub-Assembly
(Water ltration Pack)
• Water pressure too low. Adjust
regulator while system is running.
SCHTSA Complete Timer Sub assembly
• Tubing lines blocked or kinked.
Check and repair.
• Air pressure escaping. Check air
line for leaks (air pressure should
be 25 PSI).
• No water getting to nozzle.
Remove and clean orice reducing
plate in regulator assembly.
Too much / Too Little • Adjust controller settings. Shorten
“Mist On” time or increase “Mist
Off” time.
Moisture • Adjust water pressure.
Humidity System (Cont'd)

Rev. 0408
11
Refrigerant Type
The standard refrigerant will be R-22 unless otherwise
specied on the customer order. Check the serial plate on
the case for information.
Refrigeration Lines
Liquid Suction
3/8” O.D. 5/8” O.D.
NOTE: The standard coil is piped at 5/8” (suction); however,
the store tie-in may vary depending on the number of
coils and the draw the case has. Depending on the case
setup, the connecting point in the store may be 5/8”, 7/8”,
or 11/8”. Refer to the particular case you are hooking up.
Refrigerant lines should be sized as shown on the
refrigeration legend furnished by the store.
Install P-TRAPS (oil traps) at the base of all suction line
vertical risers.
Pressure drop can rob the system of capacity. To keep the
pressure drop to a minimum, keep refrigerant line run as
short as possible, using the minimum number of elbows.
Where elbows are required, use long radius elbows only.
Control Settings
See the “Case Specs” section of this guidebook for the
appropriate settings for your merchandiser. Maintain these
parameters to achieve near constant product temperatures.
Product temperature should be measured rst thing in the
morning, after having been refrigerated overnight. For
all multiplexing, defrost should be time terminated. Load
master valves are not recommended. Defrost times should
as directed in the Case Specications section of this guide.
The number of defrosts per day should never change.
The duration of the defrost cycle may be adjusted to meet
conditions present at your location.
Access to TX Valves and Drain Lines
Mechanical - Remove product from end of case. Remove
product racks. Remove refrigeration and drain access
panels (labeled). TX valve (mechanical only) and drain are
located under each access panel at end of the case.
Electronic - The Electronic Expansion valve master and
slave cylinder(s) are located within the electrical access
panel(s).
Refrigeration
Electronic Expansion Valve (Optional)
A wide variety of electronic expansion valves and case
controllers can be utilized. Please refer to EEV and
controller manufacturers information sheet. Sensors for
electronic expansion valves will be installed on the coil inlet,
coil outlet, and in the discharge air. (Some supermarkets
require a 4th sensor in the return air). Case controllers will
be located in the electrical raceway or under the case.
Thermostatic Expansion Valve Location
This device is located on the same side as the refrigeration
stub. A Sporlan balanced port expansion valve model
is furnished as standard equipment, unless otherwise
specied by customer.
Expansion Valve Adjustment
Expansion valves must be adjusted to fully feed the
evaporator. Before attempting any adjustments, make
sure the evaporator is either clear or very lightly covered
with frost, and that the xture is within 10°F of its expected
operating temperature.
Measuring the Operating Superheat
1. Determine the suction pressure with an accurate
pressure gauge at the evaporator outlet.
2. From a refrigerant pressure temperature chart,
determine the saturation temperature at the
observed suction pressure.
3. Measure the temperature of the suction gas at the
thermostatic remote bulb location.
4. Subtract the saturation temperature obtained in step
No. 2 from the temperature measured in step No. 3.
3. The difference is superheat.
5. Set the superheat for 5°F - 7°F.
T-STAT Location
T-Stats are located within the electrical raceway. Refer to
diagram below.
WATER SUPPLY
TO HAND VALVE
BALLAST & TERMINAL
BLOCKS
T5 LAMP
HUMIDITY SYSTEM DRAIN
BALLAST LOCATION
ELECTRICAL

IGUP-AB-0408
12
Wiring Color Code
CASE MUST BE GROUNDED
NOTE: Refer to label illustrated above that is afxed to case
to determine the actual conguration as checked in the
“TYPE INSTALLED” boxes.
Electrical Circuit Identication
Standard lighting for all models will be full length uorescent
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.
Electrical Service Receptacles (When Applicable)
The receptacle that is provided on the exterior back of
these models is intended for computerized scales with a
fteen amp maximum load, not for large motors or other
high wattage appliances. It should be wired to a dedicated
circuit.
BEFORE SERVICING
ALWAYS DISCONNECT ELECTRICAL
POWER AT THE MAIN DISCONNECT
WHEN SERVICING OR REPLACING ANY
ELECTRICAL COMPONENT.
This includes (but not limited to) Fans, Heat-
ers, Thermostats, and Lights.
Electrical
Field Wiring and Serial Plate Amperage
Field Wiring must be sized for component amperes printed
on the serial plate. Actual ampere draw may be less than
specied. Field wiring from the refrigeration control panel to
the merchandisers is required for refrigeration thermostats.
Most component amperes are listed in the “Case Specs”
section, but always check the serial plate.
Ballast Location
Ballasts are located within the access panel that runs the
length of the rear of the case. Refer to diagram on page 4.
Wiring and Serial Plate Amperage
Field Wiring must be sized for component amperes stamped
on the serial plate. Actual ampere draw may be less than
specied. Field wiring from the refrigeration control panel to
the merchandisers is required for refrigeration thermostats.
Most component amperes are listed in the “Case Specs”
section, but always check the serial plate.
Ashrae Color Code
NOTE: All other manufacturers have no standard sensor codes.
Case Control Systems SENSOR COLOR
Manufacturer ® > EIL CP
Location
Coil Inlet
Color Blue Blue
Part# 225-01-1755 225-01-3255
Coil Outlet Color Red Red
Part# 225-01-1757 225-01-3123
Discharge Air Color Green Green
Part# 225-01-1756 225-01-3260
Return Air Color Purple Green
Part# 225-01-1758 225-01-3260
Defrost Term. Color White Orange
Part# 225-01-0650 225-01-3254
Liquid Line Color White Blue
Part# 225-01-0650 225-01-3255

Rev. 0408
13
Non-glare Glass
The high optical clarity of this glass is possible due to
special coatings on the glass surface itself. To preserve this
coating and the optical clarity, keep the glass clean.
Windex® or Glass Plus® are the only solutions
recommended to be used to clean the non-glare glass.
The damage to the glass from improper, caustic solutions
is irrepairable.
User Information
In addition to cleaning the glass with the recommended
product, there are precautions that should be taken when
working and cleaning the inside of the case.
• When cleaning the inside of the cases, we
recommend that the glass be fully opened and
covered to prevent solutions from splashing onto the
glass and ruining the coating on the inside.
Maintenance
Electrical Precautions
BEFORE SERVICING
Always disconnect electrical power at the main
disconnect when servicing or replacing any
electrical component.
This includes (but not limited to) Fans, Heaters,
Thermostats and Lights.
Replacing Fluorescent Lamps
Fluorescent lamps are furnished with a shatterproof
protective coating. The same type of lamp with protective
coating must be used if replaced.
This lamp has been treated to resist breakage and must be
replaced with a similarly treated lamp in order to maintain
compliance with NSF Standards. NSF CODE 4.28.1
Contact HUSSMAN Chino for replacement.
1-800-395-9229 X 2131
T-5 Bulbs
Please note: T-5 lights must be turned off and on after bulb
replacement.
Evaporator Fans
The evaporator fans are located at the center front of these
merchandisers directly beneath the display pans. Should
fans or blades need servicing, always replace fan blades
with the raised embossed side of the blade TOWARD THE
MOTOR.
Copper Coils
The copper coils used in Hussmann merchandisers may
be repaired in the eld. Materials are available from local
refrigeration wholesalers.
Hussmann recommends using #15 Sil-Fos for repairs.
Tips and Troubleshooting
Before calling for service, check the following:
1. Check electrical power supply to the equipment for
connection.
2. Check xture loading. Overstocking case will affect
its proper operation.
3. If frost is collecting on xture and/or product, check
that Humidity Control is working properly, and that
no outside doors or windows are open-allowing
moisture to enter store.
FOR PROMPT SERVICE
When contacting the factory,
be sure to have the Case Model and Serial
Number handy. This information is on a plate
located on the case itself.
Electrical Wiring Diagrams
AB Gravity Coil 4’ ~ 6’ W0050005
Aged Beef ABG-28-57-8-R W0050006
S/C with Paragon Timer W0050009

IGUP-AB-0408
14
DATE:
PROJECT TITLE: DRAWING #:
DRAWN BY:
PRODUCTION ORDER #: DRAWING TITLE:
DATE:
Hussmann Corporation, Int'l. 13770 Ramona Avenue Chino, CA. 91710
(909)-590-4910 Lic.#: 644406
REVISIONS:
#: DESCRIPTION: CHECKED BY:
BY:
FILE LOCATION:
ADRIAN E. CRISCI
PAGE OF
?
11
02/25/02 AGED BEEF CASES W0050005
4' ~ 6' STANDARD GRAVITY COIL CASE
A Updated Drawing 4/23/07 JR
L
LIGHT SWITCH TIPPETTE
125-01-0311
BALLAST 125-01-3266
FULHAM LH3-120-L
BALLAST 125-01-3266
FULHAM LH3-120-L
BLACK #14
WHITE #14
L1 N
~120 VAC - 1Ø - 60 Hz.
MCA= .88A
MOP= 15A
~120 VAC - 1Ø - 60 Hz.
BUNDLE WHITE/BLACK LABELED
THERMOSTAT CIRCUIT
BUNDLE
ORANGE LABELED
LIGHT CIRCUIT
BLACK #14
WHITE #14
T-STAT
225-01-0705A
SUCTION SOLENOID
225-01-3202
F21T5-36"
125-03-1129
F21T5-36"
125-03-1129
F21T5-36"
125-03-1129
F21T5-36"
125-03-1129
LIGHT CIRCUIT= 0.7A
0.7
L1
L2
L3
LOADING
L1
L2
L3
LOADING
L1
L2
L3
LOADING
L1
L2
L3
LOADING
L1
L2
L3
LOADING
L1
L2
L3
LOADING
L1
L2
L3
LOADING
L1
L2
L3
LOADING
120 V
CIRCUIT # 1
Wiring Diagram

Rev. 0408
15
DATE:
:#GWD:ELTITTCEJORPDRAWN BY:
PRODUCTION ORDER #: DRAWING TITLE:
DATE:
REVISIONS:
:YBDEKCEHC:NOITPIRCSED:# BY:
FILE LOCATION:
D.QUAN
---
PAGE OF
HUSSMANN CORPORATION
13770 RAMONA AVENUE
CHINO, CA.91710
[phone] LIC.#: 644406
1
2
31 1
08/18/05
T:\WIRESCHEMATICS\NEW-WIRING
ABG-28-57-8-R W0050006
ABG-28-57-8-R
884167
~115 VAC - 1Ø - 50/60 Hz.
CIRCUIT #1
F21T5-36"
125-03-1129
CAP OFF
WIRE
15 AMP FUSE 125-01-3282
FUSE HOLDER
125-01-3283
T-STAT
SUCTION
SOLENOID
SOLENOID
225-01-3202
THERMOSTAT
225-01-0705A
BALLAST 125-01-3266
FULHAM LH3-120-L
BALLAST 125-01-3266
FULHAM LH3-120-L
BALLAST 125-01-3266
FULHAM LH3-120-L
F21T5-36"
125-03-1129
F21T5-36"
125-03-1129
F21T5-36"
125-03-0167
F21T5-36"
125-03-0167
TAG "TOP"
WHITE/BLACK
T-STAT
SUCTION
SOLENOID
SOLENOID
225-01-3202
THERMOSTAT
225-01-0705A
TAG "TOP"
WHITE/BLACK
TAG ORANGE
~115 VAC - 1Ø - 50/60 Hz. ~115 VAC - 1Ø - 50/60 Hz.
SWITCH
TOGGLE 125-01-0307
CIRCUIT #1
NOTE:
CASE MUST
BE GROUNDED
#.#
#.# #.#
3.9 #.# #.#
L1 L2
L3
115 V
LOADING
Wiring Diagram (Cont'd)

IGUP-AB-0408
16
DATE:
PROJECT TITLE: DWG #:DRAWN BY:
PRODUCTION ORDER #: DRAWING TITLE:
DATE:
REVISIONS:
:YBDEKCE
H
C:NOITPIRCSED:# BY:
FILE LOCATION:
D.QUAN
---
PAGE OF
HUSSMANN CORPORATION
13770 RAMONA AVENUE CHINO, CA.91710
[phone] LIC.#: 644406
1 2
31 1
05/22/06
\ENG\WIRESCHEMATICS\NEW-WIRING
AGED BEEF CASE W0050009
AGED BEEF CASE
######
REVISED PER ENG LAB (ECN=10379) 08/10/06 DQ
CIRCUIT #1
NOTE: CASE MUST
BE GROUNDED
8.0
L1
L2
L3
115 V
LOADING
PAGE 1 OF 1
LIGHT SWITCH 125-01-0325
POWER: ~ 115 VAC - 1Ø - 60 HZ.
15 AMP FUSE
125-01-3282 FUSE HOLDER
125-01-3283
THERMOSTAT
A19-ABC-24 225-01-0705A
F21T5-36"
125-03-1129
F21T5-36"
125-03-1129
F21T5-36"
125-03-1129
CAP OFF
WIRE
TX
4
N
3
1 2
DEFROST TIMER
PARAGON 8045-00 ~115 V - 60 Hz.
125-01-0710
SWITCH
125-01-0271
S
C
R
C
2
1
3
RS
COMPRESSOR MOTOR
START CAPACITOR
EXTERNAL PROTECTOR
5
21
POTENCIAL RELAY
RED
YELLOW
BLUE
BLACK
RUN CAPACITOR
PRESSURE
SAFETY
MCOND. FAN
~208 VAC
CONDENSING UNITS - COPELAND®
M4FH-A036-IAA-212 / 1/3 .P. / R-404A RLA=6.0 AMP @ 115 VAC
225-03-0080
POWER: ~ 115 VAC - 1Ø 60 HZ.
FISHER™ EVAPOWAY™
DM15WW-3D 1500W @ ~ 115 VAC 13.04 AMP @ 115 VAC 125-01-0765
CONDENSATE EVAP. PAN
SAFETY SWITCH
FLOAT SWITCH
CIRCUIT#1
CIRCUIT#2
L1
L2
L3
N
G
W G BK
DUPLEX
125-04-0096
GROUND
BALLAST 125-01-3266
FULHAM LH3-120-L
BALLAST 125-01-3266
FULHAM LH3-120-L
CIRCUIT #2
NOTE: CASE MUST
BE GROUNDED
13.1
L1
L2
L3
115 V
LOADING
Wiring Diagram (Cont'd)

Rev. 0408
17
Appendices
Appendix A. - Temperature Guidelines - Refrigerated
The refrigerators should be operated according to the
manufacturer’s published engineering specifications
for entering air temperatures for specific equipment
applications. Table 1 shows the typical temperature of
the air entering the food zone one hour before the start of
defrost and one hour after defrost for various categories
of refrigerators. Refer to Appendix C for Field Evaluation
Guidelines.
Table
Type of Refrigerator Typical Entering
Air Temperature
I. OPEN DISPLAY
A. Non frozen:
1) Meat 28°F
2) Dairy/Deli 32°F
3) Produce
a. Processed 36°F
b. Unprocessed 45°F
B. Frozen 0°F
C. Ice Cream -5°F
II. CLOSED DISPLAY
A. Non frozen:
1) Meat 34°F
2) Dairy/Deli 34°F
3) Produce
a. Processed 36°F
b. Unprocessed 45°F
B. Frozen 0°F
C. Ice Cream -5°F
Single Deck Multi Deck Service Case Reach-In
I. Open Display Styles II. Closed Display Styles
Appendix B. - Application Recommendations -
Refrigerated
1.0 Temperature performance is critical for controlling
bacteria growth. Therefore, the following
recommendations are included in the standard.
They are based on conrmed eld experience
over many years.
1.1 The installer is responsible for following the
installation instructions and recommendations
provided by the manufacturer for the installation
of each individual type refrigerator.
1.2 Refrigeration piping should be sized according to
the equipment manufacturer’s recommendations
and installed in accordance with normal refrigeration
practices. Refrigeration piping should be insulated
according to the manufacturer’s recommendations.
1.3 A clogged waste outlet blocks refrigeration. The
installer is responsible for the proper installation
of the system which dispenses condensate waste
through an air gap into the building indirect waste
system.
1.4 The installer should perform a complete start-up
evaluation prior to the loading of food into the
refrigerator, which includes such items as:
a) Initial temperature performance, Coils should
be properly fed with a refrigerant according to
manufacturer’s recommendations.
b) Observation of outside inuences such
as drafts, radiant heating from the ceiling
and from lamps. Such inuence should be
properly corrected or compensated for.
c) At the same time, checks should be made of
the store dry-bulb and wet-bulb temperatures
to ascertain that they are within the limits
prescribed by the manufacturer.
d) Complete start-up procedures should include
checking through a defrost to make certain
of its adequate frequency and length without
substantially exceeding the actual needs.
This should include checking the electrical
or refrigerant circuits to make sure that
defrosts are correctly programmed for all the
refrigerators connected to each refrigeration
system.
e) Recording instruments should be used to
check performance.
Appendix C. - Field Recommendations - Refrigerated
Recommendations for eld evaluating the
performance of retail food refrigerators and hot
cases
1.0 The most consistent indicator of display
refrigerator performance is temperature of the
air entering the product zone (Refrigerated see
Diagram I, Appendix A). In practical use, the
precise determination of return air temperature
is extremely difcult. Readings of return air
temperatures will be variable and results will be
inconsistent. The product temperature alone is
not an indicator of refrigerator performance.
NOTE: Public Health will use the temperature of the product in
determining if the refrigerator will be allowed to display
potentially hazardous food. For the purpose of this
evaluation, product temperature above the FDA Food
Code 1993 temperature for potentially hazardous food
will be the rst indication that an evaluation should
be performed. It is expected that all refrigerators will
keep food at the FDA Food Code 1993 temperature for
potentially hazardous food.

IGUP-AB-0408
18
1.1 The following recommendations are made for the
purpose of arriving at easily taken and understood
data which, coupled with other observations,
may be used to determined whether a display
refrigerator is working as intended:
a) INSTRUMENT - A stainless steel stem-type
thermometer is recommended and it should
have a dial a minimum of 1 inch internal
diameter. A test thermometer scaled only
in Celsius or dually scaled in Celsius and
Fahrenheit shall be accurate to 1°C (1.8°F).
Temperature measuring devices that are
scaled only in Fahrenheit shall be accurate to
2°F. The thermometer should be checked for
proper calibration. (It should read 32°F when
the stem is immersed in an ice water bath).
b) LOCATION - The probe or sensing element
of the thermometer should be located in the
airstream where the air rst enters the display
or storage area, and not more than 1 inch
away from the surface and in the center of the
discharge opening.
c) READING - It should rst be determined
that the refrigerator is refrigerating and has
operated at least one hour since the end
of the last defrost period. The thermometer
reading should be made only after it has been
allowed to stabilize, i.e., maintain a constant
reading.
d) OTHER OBSERVATIONS - Other
observations should be made which may
indicate operating problems, such as
unsatisfactory product, feel/appearance.
e) CONCLUSIONS - In the absence of any
apparent undesirable conditions, the
refrigerator should be judged to be operating
properly. If it is determined that such condition
is undesirable, i.e., the product is above
proper temperature, checks should be made
for the following:
1. Has the refrigerator been loaded with warm
product?
2. Is the product loaded beyond the “Safe Load Line”
markers?
3. Are the return air ducts blocked?
4. Are the entering air ducts blocked?
5. Is a dumped display causing turbulent air ow and
mixing with room air?
6. Are spotlights or other high intensity lighting
directed onto the product?
7. Are there unusual draft conditions (from heating
/air-conditioning ducts, open doors, etc.)?
8. Is there exposure to direct sunlight?
9. Are display signs blocking or diverting airow?
10. Are the coils of the refrigerator iced up?
11. Is the store ambient over 75°F, 55% RH as set
forth in ASHRAE Standard 72 and ASHRAE
Standard 117?
12. Are the shelf positions, number, and size other
than recommended by the manufacturer?
13. Is there an improper application or control
system?
14. Is the evaporator fan motor/blade inoperative?
15. Is the defrost time excessive?
16. Is the defrost termination, thermostat (if used) set
too high?
17. Are the refrigerant controls incorrectly adjusted?
18. Is the air entering the condenser above design
conditions? Are the condenser ns clear of dirt,
dust, etc.?
19. Is there a shortage of refrigerant?
Appendix D. - Recommendations to User -
Refrigerated
1.0 Hussmann Corporation provides instructions and
recommendations for proper periodic cleaning.
The user will be responsible for such cleaning,
including the cleaning of low temperature
equipment within the compartment and the cooling
coil area(s). Cleaning practices, particularly with
respect to proper refrigerator unloading and
warm-up, must be in accordance with applicable
recommendations.
1.1 Cleaning of non frozen food equipment should
include a weekly cleaning of the food compartment
as a minimum to prevent bacteria growth from
accumulating. Actual use and products may
dictate more frequent cleaning. Circumstances of
use and equipment design must also dictate the
frequency of cleaning the display areas. Weekly
washing down of the storage compartment is also
recommended, especially for equipment subject to
drippage of milk or other liquids, or the collection
of vegetable, meat, crumbs, etc. or other debris
or litter. Daily cleaning of the external areas
surrounding the storage or display compartments
with detergent and water will keep the equipment
presentable and prevent grime buildup.
Appendices (Cont'd)

Rev. 0408
19
1.2 Load levels as dened by the manufacturer must
be observed.
1.3 The best preservation is achieved by following
these rules:
a) Buy quality products.
b) Receive perishables from transit equipment
at the ideal temperature for the particular
product.
c) Expedite perishables to the store’s storage
equipment to avoid unnecessary warm-up
and prolonged temperature recovery. Food
store refrigerators are not food chillers nor
can they reclaim quality lost through previous
mishandling.
d) Care must be taken when cross
merchandising products to ensure that
potentially hazardous vegetable products are
not placed in non refrigerated areas.
e) Display and storage equipment doors should
be kept closed during periods of inactivity.
f) Minimize the transfer time of perishables from
storage to display.
g) Keep meat under refrigeration in meat cutting
and processing area except for the few
moments it is being handled in processing.
When a cut or tray of meat is not to be worked
on immediately, the procedure should call for
returning it to refrigeration.
h) Keep tools clean and sanitized. Since
mechanical equipment is used for fresh
meat processing, all such equipment should
be cleaned at least daily and each time
a different kind of meat product comes in
contact with the tool or equipment.
i) Make sure that all refrigeration equipment is
installed and adjusted in strict accordance
with the manufacturer’s recommendations.
j) See that all storage and refrigeration
equipment is kept in proper working order by
routine maintenance.
Appendices (Cont'd)
For further technical information, please log on to http://www.hussmann.com/products/AB.htm

The MODEL NAME and SERIAL NUMBER is required in order to provide
you with the correct parts and information for your particular unit.
They can be found on a small metal plate on the unit.
Please note them below for future reference.
MODEL:
SERIAL NUMBER:
/Chino
Additional copies of this publication may be obtained by contacting:
Hussmann® Chino
13770 Ramona Avenue • Chino, California 91710
[phone] FAX
[phone]
[phone]
Service Record
Last service date: By:
_______________ __________________________________________________________________________________________________
_______________ __________________________________________________________________________________________________
_______________ __________________________________________________________________________________________________
_______________ __________________________________________________________________________________________________
_______________ __________________________________________________________________________________________________
_______________ __________________________________________________________________________________________________
_______________ __________________________________________________________________________________________________
IGUP-AB-0408