Hussmann IMPACT D5RRI Operation manual

Rear Roll-in Dairy
Medium Temperature Free Standing or Suspended
Merchandisers Installed in Walk-in Cooler Exterior Walls
Installation
Operation
& Service
Manual
Shipped With Case
Technical Data Sheets
P/N 0435045A
Impact Series
June 2006
IMPORTANT
Keep in store for
future reference!
Merchandisers
®

INSTALLATION
NSF Certification . . . . . . . . . . . . . . . . . . . . . 1-1
Model Description . . . . . . . . . . . . . . . . . . . . 1-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Shipping Damage . . . . . . . . . . . . . . . . . . . . . 1-1
Exterior Loading . . . . . . . . . . . . . . . . . . . . . . 1-2
Merchandiser Ends . . . . . . . . . . . . . . . . . . . . 1-2
Shipping Braces . . . . . . . . . . . . . . . . . . . . . . . 1-2
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Installing D5RRIS . . . . . . . . . . . . . . . . . . . . 1-3
Installing D5RRI . . . . . . . . . . . . . . . . . . . . . 1-5
Rear Curtain Installation . . . . . . . . . . . . . . . 1-5
Joining Instructions . . . . . . . . . . . . . . . . . . . . 1-5
Installing Partitions . . . . . . . . . . . . . . . . . . . . 1-5
REFRIGERATION / ELECTRICAL
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . 2-1
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Suction Line . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Liquid Line . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Refrigeration Thermostat . . . . . . . . . . . . . . . . 2-3
Defrost Termination . . . . . . . . . . . . . . . . . . . 2-3
Defrost Sequences . . . . . . . . . . . . . . . . . . . . . 2-3
Merchandiser Electrical Data . . . . . . . . . . . . 2-4
Electrical Connections . . . . . . . . . . . . . . . . . . 2-4
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Identification of Wiring . . . . . . . . . . . . . . . . . 2-4
Wiring Color Code . . . . . . . . . . . . . . . . . . . . 2-4
DRIP PIPING AND SPLASHGUARDS
Waste Outlet . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Installing Drip Piping . . . . . . . . . . . . . . . . . . 3-1
Sealing Splashguard to Floor . . . . . . . . . . . . 3-1
START UP / OPERATION
Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Stocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Optional Shelving . . . . . . . . . . . . . . . . . . . . . 4-1
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Load Limits . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Installing FDA/NSF Required Thermometer 4-2
MAINTENANCE
Care and Cleaning . . . . . . . . . . . . . . . . . . . . . 5-1
Cleaning Honeycomb Assemblies . . . . . . . . . 5-2
Removing Return Air Grille . . . . . . . . . . . . . 5-3
Removing Scratches from Bumper . . . . . . . . 5-4
SERVICE
Replacing Fan Motors and Blades . . . . . . . . 6-1
Replacing Fluorescent Lamps . . . . . . . . . . . . 6-2
Replacing Lamp Holders and End Caps . . . . 6-2
Replacing Ballasts . . . . . . . . . . . . . . . . . . . . . 6-3
Repairing Aluminum Coils . . . . . . . . . . . . . . 6-4
WARRANTY
REVISION A
1. Added NSF information on cover and pages 1-1, 3-1
and 4-4 through 4-6.
TABLE OF CONTENTS
P/N 0435045A
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 1-800-522-1900
www.hussmann.com
© 2006 Hussmann Corporation
®
®

IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 1-1
NSF CERTIFICATION
These merchandisers are manufactured to meet
ANSI / National Sanitation Foundation (NSF®)
Standard #7 requirements. Proper installation is
required to maintain certification. Near the serial
plate, each case carries a label identifying the
type of application for which the case was
certified.
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
MODEL DESCRIPTION
The D5RRI and D5RRIS models are designed
for installation against an opening in the cooler
wall. The cases are open at the rear. Once
installed, product can be rolled directly from
the cooler through the rear of the caser into the
refrigerated display area.
The D5RRI is a self-supporting model with the
canopy and front sections connected by welded
end supports.
The D5RRIS is manufactured in two sections:
a Coil Package and a Front Package. The coil
package is to be suspended against the cooler
wall, above the opening, from an adequate
supporting structure in the store. The front
package completes the D5RRIS model once it
has been aligned with the coil package and
anchored to the floor.
Both models are designed to align with the D5L.
LOCATION
These cases 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 cases in direct sunlight, near
hot tables or near other heat sources could impair
their efficiency.
Like other cases, these are sensitive to air distur-
bances. Air currents passing around cases will
seriously impair their operation. Do NOT allow
air conditioning, electric fans, open doors or
windows, etc. to create air currents around the
cases.
Product should always be maintained at 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 the life of the product.
SHIPPING DAMAGE
All equipment should be thoroughly examined
for shipping damage before and during unload-
ing.
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 request to the carrier for
inspection, within 15 days.
INSTALLATION
Do not walk or put heavy objects on case.
CAUTION
!

1-2 INSTALLATION
P/N 0435045A WWW.HUSSMANN.COM
EXTERIOR LOADING
Do NOT walk on top of merchandisers or
damage to the merchandisers and serious person-
al injury could occur. THEY ARE NOT STRUCTURAL-
LY DESIGNED TO SUPPORT EXCESSIVE EXTERNAL
LOADING such as the weight of a person. Do not
place heavy objects on the case.
MERCHANDISER ENDS
Ends for the D5RRI and D5RRIS rear load dairy
models are shipped separately to be field installed
after the cases are installed in the cooler wall.
Refer to separate instructions shipped with the
ends.
SHIPPING BRACES
Move the case as close as possible to its perma-
nent location and then remove all packaging.
Check for damage before discarding packaging.
Remove all separately packed accessories such as
kits and shelves.
The D5RRI is top-heavy and must be supported
and moved with care at all times until it has been
securely anchored. It must be supported while it
is being unfastened from the skid and when it is
removed from the skid. Once the skid has been
unfastened, never leave the fixture unsupported or
unattended until it has been anchored.
LEVELING
Merchandisers must be installed level to ensure
proper operation of the refrigeration system and
to ensure proper drainage of defrost water. When
leveling merchandisers, use a carpenter’s level as
shown. Leveling shims are provided with each
case for use if needed. The shims are big enough
so that you can level adjoining merchandisers at
the same time using one shim.
NOTES:
• BEGIN LINEUP LEVELING FROM THE HIGHEST POINT
OF THE STORE FLOOR.
• If shimming two corners, check to see if a shim is
needed in the center of the case. If a gap exists
between the support rail of the case and the floor, a
shim should be placed in the center.
Shim
Levels
Do NOT remove shipping braces until
the merchandisers are positioned
for installation. Once unfastened,
NEVER LEAVE THE MERCHANDISER
UNSUPPORTED OR UNATTENDED
until it has been anchored.
WARNING
!
Do not walk or put heavy objects on case.
CAUTION
!

INSTALLING D5RRIS
Overview
The coil package must be suspended above the
cooler wall opening from an adequate support
structure. It is imperative that both the method
and the materials used to suspend the coil pack-
age be of sufficient strength to support the coil
package.
These models are designed for use with roll-in
carts or free-standing (unattached) shelving.
DISCLAIMER: These methods of securing the
coil package are suggestions only. It is the
responsibility of the store designer, installer and
end user to ensure the store’s structural capacity.
Hussmann assumes no liability for consequences
resulting from failure of store structure or materi-
al used in installation.
Two 15/8x 15/8inch (41 x 41 mm) channel struts
are provided for hanging the coil package. These
struts extend the full length of the case and are
bolted to the case at the factory. Use 1/2in. (12.7
mm) clamp nuts to secure the hanging rods to the
struts. Although these struts allow flexibility in
hanging rod location, the end support rods must
be within 12 in. (305 mm) of the coil package
end. For a 12 ft (3658 mm) coil package, the cen-
ter hanging rods must be within 12 in. (305 mm)
of the center of the case.
IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 1-3
Hanging Support Spacing
Case Coil Minimum Number of
Length Package 1/2in. dia. (12.7 mm)
ft (mm) Weight Threaded Drop
lb (kg) Rods Required
8 (2438) 485 (220) 4
12 (3658) 750 (340) 6
Cantilevered “I” Beam
Store Joist
Field Supplied
Suspending Rods
Channel Struts
Coil Packa
g
e

1-4 INSTALLATION
P/N 0435045A WWW.HUSSMANN.COM
Installing Coil Package
Attach the coil package to the selected store
structural support using the suggested drop rod
size, quantity and fastening method, or as local-
ly engineered. The coil package must be leveled.
Apply silicone sealant between the “L” bracket
and bottom of cooler wall as shown. Fasten the
“L” bracket at the top rear of the coil package to
the cooler wall to prevent sway or lateral move-
ment. The “L” bracket has holes for this purpose.
Once lineup is complete, apply silicone or butyl
sealant on outside where “L” bracket and wall
meet, and on inside where wall and bracket meet
to prevent condensation in walls. Sealing is also
required to facilitate cleaning to NSF guidelines.
The channel struts with clamping nuts are provid-
ed to fasten the suspending rods. When tightening
1/2in. (12.7 mm) threaded rods into nuts, ensure
that the rods are firmly screwed into place.
Vibration pads must be used if a machine room
or or other machinery is located above the struc-
ture that supports the coil package.
Installing Front Package
Align the front section with the canopy. Shim as
necessary to maintain level. Fasten anchor brack-
ets to floor. Seal as indicated.
Flat Washer or Plate
(used with Vibration Pad)
Flat Washer
Lock Washer
Vibration Pad (if required)
Store Structure
Flat Washer
Nut
Case Channel Strut
Suspending Rod
Clamping Nut
Nut
Suspending Rod
Case
Level
Rear
Suspension
Channel
Drop Rods
Cooler
Compartment
8 in. (203 mm)
Coil
Package
Seal
Seal
Floor Line
Seal
Anchor
Cooler
Compartment
Wall
Seal
22 in.
(559 mm)
80 in.
(2032 mm)
32 3/4in.
(832 mm)
Return Grille
Front Package

IMPACT Rear Roll-in
INSTALLING D5RRI
The D5RRI must be securely anchored to the
floor and cooler wall after it has been leveled in
its permanent position. Prelocated anchoring
holes are provided in the front assembly,
uprights, side braces, and top “L” bracket.
Sealing
For proper performance, safety and sanitation,
apply a generous bead of sealant betwwen the
D5RRI and the floor, between the D5RRI top
and sides and the cooler wall, around the interi-
or perimeter of the base at the floor, and along
the exterior front of the base at the floor.
REAR CURTAIN INSTALLATION
Rear curtains are provided with each case, two
per 8 ft model, 3 per 12 ft model. Curtains should
be installed just before start-up to prevent dam-
age.
1. Slide all hangers onto track at rear of the
case. Use ALL hangers so the curtains will drape
properly.
2. Snap a stop clip onto each end of the track.
3. Hang curtains on hangers.
JOINING
Sectional construction means that two or more
merchandisers may be joined in line yielding one
long continuous display requiring only one pair
of ends. Joint kits and instructions are shipped
with each case.
To join like fixtures, a joint assembly is
required. To join unlike fixtures, or like fixtures
operating at different temperatures, a 11/2inch
(38 mm) partition kit is required.
ALL JOINTS MUST BE AIR-TIGHT TO PREVENT
FORMATION OF ICE OR CONDENSATION.
Refer to separate joining instruction shipped
with each case
INSTALLING PARTITIONS
To join unlike fixtures, or like fixtures operating
at different temperatures, a 11/2in. (38 mm) par-
tition kit is required.
Instructions for installing these partitions are
included with the kits.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 1-5
Hanger
Stop
Curtain
Do NOT remove shipping braces until
the merchandisers are positioned
for installation. Once unfastened,
NEVER LEAVE THE MERCHANDISER
UNSUPPORTED OR UNATTENDED
until it has been anchored.
WARNING
!

REFRIGERANT
The correct type of refrigerant will be
stamped on each case’s serial plate. The case
refrigeration piping is leak tested, factory
sealed and pressurized. Before making refrig-
eration hookups, depress the universal line
valve to ensure that coils have maintained
pressure during shipment.
REFRIGERANT PIPING
Connection Location
The refrigerant line connections are at the left-
hand end of the case (as viewed from
the front).
After connections have been made, seal this out-
let thoroughly. Seal both the inside and the out-
side. We recommend using an expanding
polyurethane foam insulation.
Multiplexing
Multiplex piping must be run above the top of the
coil package in the area shown. Observe proper
suction pipe joining practices and insulate all
suction piping outside the case to prevent drip-
page from condensate.
Line Sizing
Refrigerant lines should be sized as shown on
the refrigeration legend that is furnished for the
store or according to ASHRAE guidelines.
Refer to the information on the next page for
branch line piping of Hussmann Equipment.
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.
IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 2-1
REFRIGERATION / ELECTRICAL
Refrigeration lines are under pressure
and should be depressurized before
attempting to make any connections.
WARNING
!
When brazing pipes, be sure to use
the insulation blanket
shipped with the case
to prevent damage to the case.
CAUTION
!
C
O
O
L
E
R
W
A
L
L
Piping Area

2-2 REFRIGERATION / ELECTRICAL
INSULATION
The suction and liquid lines should be clamped or
taped together and insulated for a minimum of
30 ft (9144 mm) from the merchandiser.
Additional insulation for the balance of the liquid
and suction lines is recommended wherever con-
densation drippage is objectionable or lines are
exposed to ambient conditions.
SUCTION LINE
• Pitch in direction of flow.
• May be reduced by one size at one third of
case run load and again after the second third.
Do not reduce below the case suction line
size.
• Case suction lines should enter at the top of
the branch line.
LIQUID LINE
• May be reduced by one size after one half the
case run load. Do not reduce below the case
liquid line connection size.
• Take-offs to case liquid lines should exit the
bottom of the branch liquid line. Provide an
expansion loop for each evaporator take-off
(minimum 3 in. [76 mm] loop).
P/N 0435045A WWW.HUSSMANN.COM
Suction Line Return
Offtime Defrost
Liquid Line
Suction Line
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
Minimum Loop
3-in. (76 mm)
Liquid Line Take Off

REFRIGERATION THERMOSTAT
The bulb for the optional refrigeration thermostat
is located approximately 2 in. (51 mm) in front of
the coil and 6 ft (1829 mm) from the right-hand
end (facing front) of the case. The optional
refrigeration thermostat is located 4 1/2ft
(1372 mm) from the right-hand end.
DEFROST TERMINATION
Rear load dairy cases are designed for time
terminated defrost only. Refer to the case data
sheet shipped with this manual for correct
settings.
DEFROST SEQUENCES
These merchandisers require defrost cycles
for proper operation. Refer to the data sheets
for application data.
The Time Clock initiates defrost. The evaporator
fans continue to circulate air across the evapora-
tor coil, melting any frost build-up. Defrost must
be time terminated.
IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 2-3
Optional Refrigeration Thermostat
Optional
Refrigeration
Thermostat
Bulb

2-4 REFRIGERATION / ELECTRICAL
CASE ELECTRICAL DATA
Technical data sheets for specific models are
included with this manual. Case data sheets
provide case electrical data, standard electrical
schematics, parts lists and performance data.
Refer to the data sheets and case serial plate
for electrical information.
ELECTRICAL CONNECTIONS
All wiring must be in compliance with NEC and
local codes. All electrical connections are to be
made in the electrical raceway or Handy Box.
FIELD WIRING
Field wiring must be sized for component
amperes stamped on the serial plate. Actual
ampere draw may be less than specified. Field
wiring from the refrigeration control panel to the
merchandisers is required for optional refrigera-
tion thermostats. ALWAYS CHECK THE SERIAL PLATE
FOR COMPONENT AMPERES.
IDENTIFICATION OF WIRING
Leads for all electrical circuits are identified by
colored plastic bands. These bands correspond to
the color code sticker (shown below) located
inside the case’s raceway.
P/N 0435045A WWW.HUSSMANN.COM
WIRING COLOR CODE
Leads for all electrical circuits are identified by a colored plastic band: neutral
wire for each circuit has either White insulation or a White plastic sleeve in
addition to the color band.
PINK ............REFRIG.THERMOSTAT LOW TEMP.ORANGE OR
LIGHT BLUE..REFRIG.THERMOSTAT NORM TEMP.TAN ..........LIGHTS
DARK BLUE ..DEFROST TERM.THERMOSTAT MAROON...RECEPTACLES
PURPLE........CONDENSATE HEATERS YELLOW ....DEFROST HEATERS 120V
BROWN ........FAN MOTORS RED ........DEFROST HEATERS 208V
GREEN* .......GROUND *EITHER COLORED SLEEVE ORCOLORED INSULATION
ELECTRICIAN NOTE: Use copper conductor wire only.
CASE MUST BE GROUNDED
Optional T8 rail lights and
optional Quick Connect spray hose
or field-installed misting system
shall not be used together.
CAUTION
!

IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 3-1
WASTE OUTLET
A waste outlet is located at the back of the upper
fan plenum, 1 1/4in. (32 mm) from either end of
the case.
It is the responsibility of the installing contractor
to supply and connect drip pipe external to the
case. External drip pipe may be flexible or rigid.
INSTALLING DRIP PIPING
Poorly or improperly installed drip pipes can
seriously interfere with the case’s operation and
result in costly maintenance and product losses.
Please follow the recommendations listed below
when installing drip pipes to ensure proper instal-
lation.
1. Never use drip piping smaller than the nomi-
nal diameter of the pipe in the case.
2. When connecting drip piping, the “water
seal” must be used as part of the drip piping
to prevent air leakage or insect entrance.
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 1/8in.
per ft (3 mm per 300 mm).
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. To meet code on low base
cases, it may be necessary to install a
field-supplied drip pipe reducer. An
alternative is to cut the last section of
drip pipe at an angle.
6. Prevent drip pipes from freezing:
A. Do NOT install drip pipes in contact with
uninsulated suction lines. Suction lines should
be insulated with a nonabsorbent insulation
material.
B. Where drip pipes are located in dead air
spaces, such as between cases or between a
case and a store wall, provide means to
prevent freezing.
SEALING SPLASHGUARD TO FLOOR
Stainless steel splashguards may be sealed to the
floor using a vinyl cove base trim. The size of
trim needed will depend on how much the floor is
out of level.
To install the trim to the splashguard:
1. Remove all dirt, wax and grease from the area
of the splashguard where adhesion will be
necessary. This is to ensure a good and secure
installation.
2. Apply a good contact cement to the cove trim
and allow proper drying time according to the
directions supplied with the cement.
DRIP PIPING AND SPLASHGUARDS
Waste Outlet at End
(connect drip pipe here)

3-2 DRIP PIPING AND SPLASHGUARDS
3. Install the trim to the splashguard so that it is
lying flush with the floor. The Cove Trim
may be sealed to the floor using a silicone
sealer.
P/N 0435045A WWW.HUSSMANN.COM
Cove Trim
Cement
Splashguard
Apply Cove Base Trim to Splashguard

IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 4-1
START UP
See the specific model’s Technical Data Sheet for
refrigerant settings and defrost requirements.
Bring cases down to the operating temperatures
listed on the data sheet.
Each four foot section has its own evaporator coil
and pre-set non-adjustable thermostatic expansion
valve (TEV). No adjustment is required. DONOT
REMOVE THE CAP ON THE TEVS.This cap is to
be removed only for valve disassembly. Removal
of this cap during case maintenance will result in
refrigerant loss unless the system is first isolated
and the refrigerant recovered.
The TEV has been factory set to provide the
recommended performance settings as specified
on the case data sheets.
STOCKING
Product should NOT be placed in cases until
case is at proper operating temperature.
Proper rotation of product during stocking is
necessary to prevent product loss. Always bring
the oldest product to the front and set the newest
to the back.
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.
Close-off curtains at the rear of the D5RRI and
D5RRIS must be kept closed except when stock-
ing to avoid adverse refrigeration performance.
OPTIONAL SHELVING
Product display shelving, lighted or unlighted,
may be added to these cases with the addition of
shelf support kits. These modular kits may be
installed in the entire length or any 4 ft
(1219 mm) section.
Shelf Supports
Two optional shelf support types are available.
The stub shelf supports attach to the top coil
package for one or two rows of shelves. The
other shelf supports are 60 in. (1524 mm) tall,
bolted to the floor, and support up to four rows of
shelves.
An 8 ft (2438 mm) case has two columns of
shelves; a 12 ft (3658 mm) case has three
columns of shelves.
Shelves
Optional shelving is available in 20 in. (508 mm),
22 in.(559 mm), and 24 in. (610 mm) size. If
using more than one size shelf in a column, the
smallest shelf must be the highest.
START UP / OPERATION
REMOVAL OF THE TEV CAP WILL RESULT IN
REFRIGERANT LOSS UNLESS THE SYSTEM IS FIRST
ISOLATED AND THE REFRIGERANT RECOVERED.
CAUTION
!

ACCESSORIES
Various display arrangements can be achieved by
through combinations of shelves and mobile
dairy carts. These carts are designed for quick
loading, maneuverability, and sales appeal. After
loading, the carts glide into the case from the
rear. They can be positioned under optional
shelving.
Do not use non-approved shelving, baskets, dis-
play racks, or any accessory that could hamper
air curtain performance. Consult your Hussmann
representative when in doubt about the effects of
third-party accessories.
LOAD LIMITS
Shelf life of perishables will be short if load limit
is violated. AT NO TIME SHOULD CASES BE
STOCKED BEYOND THE LOAD LIMITS INDICATED.
DO NOT BLOCK HONEYCOMB.
INSTALLING FDA/NSF REQUIRED
THERMOMETER
The following pages provide the same informa-
tion that ships with the thermometer.
This requirement does not apply to display
refrigerators intended for bulk produce (refer
to page 1-1).
Please note that the tape cannot be exposed after
installation.
4-2 START UP / OPERATION
P/N 0435045A WWW.HUSSMANN.COM
Load Limit

IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 4-3
— Inside
End Panel
Suggested Mounting Locations
in Multi-deck Merchandisers
— Return Air Grille
— Shelf
Price Tag
Molding
Suggested Mounting Locations
in Single Deck Glass Front
Impact Merchandisers
— Acrylic
Package Guard,
Facing Out
Double Stick Tape
Flexible Plastic
Fits in Price Tag
Moldings
Thermometer — Hussmann P/N 430108
This is an NSF-7 &
1999 FDA Food Code
Required
Thermometer

4-4 START UP / OPERATION
P/N 0435045A WWW.HUSSMANN.COM
Excerpt from ANSI / NSF-7:
5.30 Temperature indicating devices
5.30.1 Each refrigerated storage compartment and cabinet
shall have at least one securely mounted temperature indicat-
ing device that clearly displays the air temperature in the
compartment. A temperature indicating device shall not be
required in beverage coolers or units intended solely for the
storage and/or display of ice cream and other frozen deserts.
5.30.2 The temperature display of a temperature indicating
device shall be visible immediately upon opening a door to
the refrigerated compartment or shall be visible from the
equipment exterior without opening a door to the compart-
ment. The sensing element of the device shall be easily
cleanable and located to reflect the temperature in the
warmest part of the food storage compartment.
Open display refrigerators shall have a temperature indicating
device that is easily cleanable and located to reflect the
warmest part of the food storage compartment. Open display
refrigerators shall include a thermometer and installation
instructions for installing the thermometer in the warmest
part of the food storage compartment, as determined by the
manufacturer.
Excerpt from 1999 FDA Food Code:
4-204.112 Temperature Measuring Devices.
(A) In a mechanically refrigerated or hot FOOD storage unit, the
sensor of a TEMPERATURE MEASURING DEVICE shall be located to
measure the air temperature in the warmest part of a mechan-
ically refrigerated unit and in the coolest part of a hot FOOD
storage unit.
(B) Except as specified in ¶(C) of this section, cold or hot
holding EQUIPMENT used for POTENTIALLY HAZARDOUS FOOD shall
be designed to include and shall be equipped with at least
one integral or permanently affixed TEMPERATURE MEASURING
DEVICE that is located to allow easy viewing of the device’s
temperature display.
(C) Paragraph (B) of this section does not apply to EQUIPMENT
for which the placement of a TEMPERATURE MEASURING DEVICE is
not a practical means for measuring the ambient air surround-
ing the FOOD because of the design, type, and use of the
EQUIPMENT, such as calrod units, heat lamps, cold plates,
bainmaries, steam tables, insulated FOOD transport containers,
and salad bars.
Important – Please read!
Keep with merchandiser
or give to store manager — do not destroy.
Hussmann P/N 429971A 11/2000
Each installation will be different
depending on how the unit is
stocked, shopping patterns in the
department and ambient conditions
of the store. The suggested loca-
tions provided herein are possible
locations. It is the responsibility of
the purchaser / user to determine
the location within the food storage
area of the unit that best meets the
code requirements above.
The thermometer may need to be
moved several times to find the
warmest location. Mounting options
include flexible plastic for price tag
molding application, magnet
applied to back of flexible plastic for
steel end wall, and double stick
tape. Tape must not be exposed
after installation.
Questions about either code should
be addressed to local agencies or
other appropriate officials.

IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 5-1
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 mini-
mum maintenance costs, these cases should be
thoroughly cleaned, all debris removed and the
interiors washed down, weekly.
The store floor will be the interior display area of
the rear roll-in dairy cases. Since milk and other
spillage will occur, the floor should be cleaned
and sanitized at least once each week.
When cleaning, use caution to prevent water or
other liquids from entering the fan vents on the
interior side of the front assembly.
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.
Do NOT Use:
• Abrasive cleansers and scouring pads, as these
will mar the finish.
• A hose on lighted shelves or submerge the
shelves in water.
• Solvent, oil or acidic based cleaners on any
interior surfaces.
• Coarse paper towels on coated glass.
• Ammonia-based cleaners on acrylic parts.
• A hose on rail lights, canopy lights or any other
electrical connection.
•STEAM OR HIGH WATER PRESSURE HOSES
TO WASH THE INTERIOR.THESE WILL DESTROY
THE CASES’ SEALING CAUSING LEAKS AND POOR
PERFORMANCE.
Do:
• 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.
• First turn off refrigeration, then disconnect
electrical power.
• Sweep the floor of the case.
• 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 CASES’ SEALING
CAUSING LEAKS AND POOR PERFORMANCE.
• Take care to minimize direct contact between
fan motors and cleaning or rinse water.
• Rinse with hot water, but do NOT flood.
NEVER INTRODUCE WATER FASTER THAN THE
WASTE OUTLET CAN REMOVE IT.
• Allow cases to dry before resuming operation.
• Wipe down lighted shelves with a damp sponge
or cloth so that water does not enter the light
channel. DO NOT USE A HOSE OR SUBMERGE
SHELVES IN WATER.Wipe dry.
• After cleaning is completed, turn on power to
the case.
MAINTENANCE
SHUT FANS OFF DURING
CLEANING PROCESS.
WARNING
!
Do NOT allow product to sit in an
un-refrigerated area.
WARNING
!

5-2 MAINTENANCE
P/N 0435045A WWW.HUSSMANN.COM
CLEANING HONEYCOMB ASSEMBLIES
Upper Honeycomb
Honeycombs should be cleaned at least every six
months. Dirty honeycombs will cause cases to
perform poorly. The honeycombs may be cleaned
with a vacuum cleaner. Soap and water may be
used if all water is removed from the honeycomb
cells before replacing. Be careful not to damage
the honeycombs.
1. Remove interior roof panel to free honey-
comb.
2. Clean and dry the honeycomb.
3. After cleaning, replace honeycomb and
interior roof panel.
Lower Honeycomb
Starting at one lower end of the honeycomb, use
a needle-nose plier to carefully compress and lift
a corner. Work along the edge a few cells at a
time until the honeycomb is free of the retainer.
Clean and dry the honeycomb, then replace in
reverse order.
Note that a damaged honeycomb must be
replaced to maintain refrigeration efficiency.
Honeycomb
Removing Lower Honeycomb
SHUT FANS OFF DURING
CLEANING PROCESS.
WARNING
!

REMOVING RETURN AIR GRILLE
Remove the screws holding each end of the
retainer. Remove the retainer, then lift out the
return air grille
Lower Fan Plenum
Remove the return air grille, then remove the
screws that hold the plenum and lift out the
plenum.
IMPACT Rear Roll-in
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
P/N 0435045A 5-3
Return Air Grille
Lifts Out
Cart Stop
Interior View of D5RRIS Front Package
Honeycomb
Remove Screws
Remove Screw
Remove Screw
Remove Screws