Page 1
Medium Temperature
Meat, Delicatessen, Dairy and Produce
Merchandisers
Installation &
Service Manual
Shipped With Case Data Sheets
P/N 0463880_E
Impact
Excel
Series
April 2008
IIMMPPOORRTTAANNTT
Keep in store for
future reference!
Page 2
Page 3
INSTALLATION TOOL LIST . . . . . . . . . . . . . . . . . . iv
INSTALLATION
NSF Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Shipping Damage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Unloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Serial Plate Location . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Exterior Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Merchandisers Shipped with End Installed . . . . . . . . . 1-2
Shipping Braces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Shipping Rider . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Case Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Joining Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Apply Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5
Align End Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Fasten End Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Install Splashguard Brackets . . . . . . . . . . . . . . . . . . . 1-11
Offsetting Bumper . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Installing Partitions . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Installing End Assemblies . . . . . . . . . . . . . . . . . . . . . 1-13
Front Glass Adjustment . . . . . . . . . . . . . . . . . . . . . . . 1-18
Optional Front Rail Light . . . . . . . . . . . . . . . . . . . . . . 1-19
REFRIGERATION / ELECTRICAL
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Connection Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Refrigeration Shroud . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Multiplexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Line Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Oil Traps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Pressure Drop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Suction Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Liquid Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Refrigeration Thermostat . . . . . . . . . . . . . . . . . . . . . . . 2-4
Defrost Termination Thermostat . . . . . . . . . . . . . . . . . . 2-4
Defrost Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4
Merchandiser Electrical Data . . . . . . . . . . . . . . . . . . . . 2-5
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
Identification of Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
DRIP PIPING AND SPLASHGUARDS
Waste Outlet and Water Seal . . . . . . . . . . . . . . . . . . . . . 3-1
Installing Drip Piping . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Optional Drip Piping Arrangements . . . . . . . . . . . . . . . . . . . 3-2
Installing Splashguards . . . . . . . . . . . . . . . . . . . . . . . . 3-3
START UP / OPERATION
Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Load Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Stocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Multi-deck Shelf Alignment . . . . . . . . . . . . . . . . . . . . . 4-2
Multi-deck Shelf Configuration . . . . . . . . . . . . . . . . . . 4-2
Installing Lighted Shelves . . . . . . . . . . . . . . . . . . . . . . 4-2
Installing FDA/NSF Required Thermometer . . . . . . . . 4-4
MAINTENANCE
Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Fan Plenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Removable Front Shelf Support and Air Grille . . . . . . . . . . . 5-1
Fascia Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Exterior Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Interior Surfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 & 5-2
Cleaning Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Cleaning Under Merchandisers . . . . . . . . . . . . . . . . . . 5-3
Cleaning Honeycomb Assemblies . . . . . . . . . . . . . . . . 5-3
Removing Interior Back Panels . . . . . . . . . . . . . . . . . . . 5-4
Removing Scratches from Bumper . . . . . . . . . . . . . . . . 5-4
SERVICE
Replacing Fan Motors and Blades . . . . . . . . . . . . . . . . 6-1
Replacing LED Canopy Light Bars . . . . . . . . . . . . . . . 6-2
Replacing LED Shelf Light Bars . . . . . . . . . . . . . . . . . 6-3
Replacing Fluorescent Lamps . . . . . . . . . . . . . . . . . . . . 6-4
Replacing Lamp Holders and End Caps . . . . . . . . . . . . 6-4
Replacing Electronic Ballasts . . . . . . . . . . . . . . . . . . . . 6-4
Diagram — Ballast Arrangement . . . . . . . . . . . . . . . . . . . . . .6-5
Repairing Aluminum Coil . . . . . . . . . . . . . . . . . . . . . . . 6-6
WARRANTY
TABLE OF CONTENTS
P/N 0463880_E
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
®
®
Page 4
iv
P/N 0463880_E WWW
.HUSSMANN.COM
EXCEL INSTALLATION
TOOL LIST
Unloading From Trailer:
Lever Bar (also know as a Mule,
Johnson Bar, J-bar, Lever Dolly, and pry lever)
Moving Dolly
Setting Case Line-Up:
Level, 4 ft suggested
Ratchet
1
/4 in. Socket
5
/
16 in. Socket
1
/2 in. Socket
Battery Drill/Screw Gun
Caulking Gun
10 in. Adjustable Crescent Wrench
REVISION HISTORY
REVISION E
1. Added adjustable leg direction, page 1-3.
2. Added note to remove retainer from front shoe,
page 1-6.
3. Added detailed view of alignment rod locations,
page 1-8.
4. Changed gasket application for end installation,
pages 1-13 through 1-15.
5. Added load limit diagram, page 4-1.
6. Updated NSF Thermometer, pages 4-5 and 4-6.
7. Added information on LED Shelf Lights,
pages 4-2, 4-4, 5-3.
8. Added Servicing LED Canopy Lights, page 6-2.
9. Added Servicing LED Shelf Lights, page 6-3.
REVISION D
1. Added contact phone numbers, page iii.
2. Changed alignment pins to field-install, pages 1-5
and 1-6.
3. Front shelf support is integral to the interior front
panel, pages 1-7 and 5-1.
4. Added front rail light, page 1-15.
5. Added refrigeration shroud, page 2-1.
6. Added single deck honeycomb cleaning, page 5-3.
REVISION C
1. Added note, page 3-2.
REVISION B
1. Added front glass adjustment, page 1-14.
REVISION A
1. Added photographs to cover.
2. Added installation tool list, page iv.
3. Added unloading information, page 1-1
4. Revised shipping rider information, page 1-3
5. Changed location of levels, page 1-4.
6. Changed gasket application, pages 1-5 through 1-7,
1-11 & 1-13.
7. Changed canopy joining, page 1-6.
8. Added bumper end cap installation, page 1-8.
9. Added end castings to illustration, page 1-9.
10. Added end installation information, pages 1-10
through 1-13.
11. Added plumbing options, page 3-2.
12. Added fascia panel removal and cleaning,
page 5-1.
12. Revised mirror cleaning recommendation and
added warning, page 5-2.
Page 5
P/N 0463880_E 1-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Medium Temperature
Excel
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
LOCATION
These merchandisers are designed for displaying
products in air conditioned stores where temperature is maintained at or below the ANSI / NSF-7
specified level and relative humidity is maintained
at or below 55%.
Placing refrigerated merchandisers in direct
sunlight, near hot tables or near other heat sources
could impair their efficiency.
Like other merchandisers, these are sensitive to air
disturbances. Air currents passing around
merchandisers will seriously impair their
operation. Do NOT allow air conditioning,
electric fans, open doors or windows, etc. to
create air currents around the merchandisers.
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.
Excel merchandisers have internal frames.
A 3 inch (76 mm) space between the rear
of the merchandiser and wall must be
maintained for air circulation. However, in
high ambient conditions, sweating may
still occur. If this happens install a method
of forced ventilation such as a fan
ventilation kit.
SHIPPING DAMAGE
All equipment should be thoroughly examined for
shipping damage before and during unloading.
This equipment has been carefully inspected at
our factory. Any claim for loss or damage must be
made to the carrier. The carrier will provide any
necessary inspection reports and/or claim forms.
Apparent Loss Or Damage
If there is an obvious loss or damage, it must be
noted on the freight bill or express receipt and
signed by the carrier’s agent; otherwise, carrier
may refuse claim.
Concealed Loss Or Damage
When loss or damage is not apparent until after
equipment is uncrated, retain all packing materials
and submit a written request to the carrier for
inspection, within 15 days.
INSTALLATION
Do not walk or put heavy objects on case.
CAUTION
!
Page 6
1-2 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
UNLOADING
Improper handling may cause damage to the
merchandiser when unloading. To avoid damage:
1. Verify that adjustable feet are fully inserted
and securely positioned into the legs.
2. Do not drag the merchandiser out of the
trailer. Use a Johnson bar (mule).
3. Use one dolly to remove the merchandiser
from the trailer.
4. Use two dollies to move cases to lineup.
SERIAL PLATE LOCATION
Direct a flashlight through the return air grille to
locate the serial plate. B
E SURE TO POSITION WIDE
ISLAND MERCHANDISER FRONTS PROPERLY
. The
front of wide island merchandisers is readily
identified by the location of the serial plate
affixed to the inside of the left front assembly.
Since all electrical and refrigeration connections
will be made at the front side, the fronts will need
to be positioned according to the store plan layout.
EXTERIOR LOADING
Do NOT walk on top of merchandisers or
damage to the merchandisers and serious
personal injury could occur. T
HEY ARE NOT
STRUCTURALLY DESIGNED TO SUPPORT EXCESSIVE
EXTERNAL LOADING
such as the weight of a
person. Do not place heavy objects on the case.
MERCHANDISERS SHIPPED WITH END INSTALLED
If the case was shipped with the end installed,
two long bolts were used to hold the shipping
brace to the end. If the shipping bolts are
reinserted after removing the brace, they will
extend into the product area. T
HEREFORE, BE
SURE TO REPLACE THESE BOLTS WITH THE SHORTER
BOLTS PROVIDED
. NSF requires any bolt or screw
in the product area be capped or cut off if it has
more than three exposed threads.
NOTE:
Be careful not to damage the factory installed
end while moving the case. Make sure that
tools are positioned past the end and beneath
the merchandiser’s support bar.
SHIPPING BRACES
Move the merchandiser as close as possible to its
permanent location and then remove all packaging. Check for damage before discarding packaging. Remove all separately packed accessories
such as kits and shelves. Remove end braces and
discard hardware.
Do NOT remove shipping braces until
the merchandisers are positioned
for installation.
Serial Plate Behind
Return Air Grille
!
WARNING
Page 7
SHIPPING RIDER
Each case is shipped on a rider to protect the factory
installed front legs, and to make positioning the case
easier. DO NOT remove the front rider until the
case has been positioned. Once the rider is
removed, the case must be lifted –NOT PUSHED–
to reposition. To remove the rider, remove bolts
attaching rider to each leg.
Set all adjustable legs to the mid-point before
attempting to level the case.
CASE LEVELING
Merchandisers must be installed level to ensure
proper operation of the refrigeration system and
to ensure proper drainage of defrost water.
During all steps of setting, joining and leveling
cases, close attention to position and operation
must be maintained.
NOTE: B
EGIN LINEUP LEVELING FROM THE HIGHEST
POINT OF THE STORE FLOOR
.
Preparation
1. Using store blueprints, measure off and mark
on floor the exact dimensions/locations of the
case footprint. A 3 inch space is required
behind each case to prevent condensation.
2. Snap a chalk line for the front and rear
positions of the base legs.
3. Mark the location of each joint from front to
back lines.
4. FLOORS ARE NOT LEVEL!!! When
working with two or more cases to be joined, the
whole lineup must be leveled on the same plane,
left to right and front to back. This means that the
entire lineup must be brought up to the level of
the highest case in the lineup.
Along the lines previously marked, find the
highest point of the floor by:
• Walking the floor and noticing any dips or
mounds;
• Using a string level; and
• Using a transit.
Leveling
Position the first case at the highest point on the
floor. Work outward from that point to create the
case line-up. Use a 48 inch (1220 mm) or longer
level for end-to-end leveling. The rear edge of the
top foam panel of the case is a good location for
the level at the rear of the case, and the top rail is
a good location for the level at the front of the
case. For leveling the case front-to-rear, a 24 inch
(610 mm) level should be placed on the lower
flange of the case end frame. If the case has a
factory installed end, the level should be placed
on the canopy support brackets on top of the
case. Suggested level locations are shown in the
following illustrations.
P/N 0463880_E 1-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Medium Temperature
Excel
Remove Bolts from Front
Page 8
1-4 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
Level the case by all four corners. Start at the
rear by placing as needed the provided shims
under each end of the rear base rail. The shims
are long enough to allow the adjoining case to be
leveled with the same shim. When the rear of the
case is level end-to-end, move to the front of the
case. Use an 18 mm open end wrench to screw
down the levelers at each front corner so that the
front is also level from end-to-end. At this point,
check to see if the case is level front-to-rear. If it
is not, turn each front corner leveler up or down
the same amount of turns until the case is level
front-to-rear.
The case should be solidly supported at least
every 4 feet (1220 mm). Once the case is level, if
any gaps are present, shims should be inserted
under the rear base rail approximately in line
with the center front support legs to support the
rear of the case. At the front of the case, screw
down the levelers on each of the center support
legs so that they contact the floor and support the
front of the case.
NOTE: Do not place levels
on Display Pans or
on Shelves.
Leveling Single Deck
Merchandisers
Leveling
Multi-deck
Merchandisers
Level on
Hand Rail
Levels
Shim
Adjust
Legs
Adjustable
Lower
Leg Leveler
Raise
Levels
Shim
Adjust
Legs
Page 9
Once the merchandiser is level, the front glass
panels may need adjustment before joining. See
Page 1-18.
Cases with optional front rail light must have
end caps installed. See Page 1-19 for details.
JOINING INSTRUCTIONS
Sectional construction means that two or more
cases may be joined in line yielding one long
continuous display requiring one pair of ends.
A
LL JOINTS MUST BE AIR-TIGHT TO PREVENT
FORMATION OF ICE OR CONDENSATION
.
Prep Case
1. Check to be sure that merchandisers are
level and that the factory-installed nut retainers
are in place. Locate the Joining Kit and check
contents.
2. Remove shelves (if installed), display racks,
pans and front air grilles from the right end.
3. Remove the rear interior panel(s) from the
right end. On multi-deck cases remove the lower
back panel first. To remove a panel, lift it up
from its bottom edge and out. No tools required.
Apply Gaskets as Follows:
Right End
1. Apply the 1 inch (25 mm) gasket around the
perimeter of the case as shown. It must be at the
edge. Check to be sure that there are no gaps
between gasket and merchandiser.
2. Apply the 1
5
/8 in. (41 mm) gasket so that one
edge is on the metal case frame and the parallel
edge laps the 1 inch gasket. Check to be sure
that there are no gaps between merchandiser and
gaskets.
REFER TO GASKET DIAGRAM AND
DETAIL VIEWS ON NEXT TWO PAGES
.
P/N 0463880_E 1-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Medium Temperature
Excel
IMPORTANT
• Do not stretch gasket,
especially around corners.
• Do not butt gaskets;
always overlap them as shown.
• Remove paper backing
after gasket has been applied.
• Perimeter gasket required by NSF.
• End caps required for rail light.
Page 10
1-6 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
Gasket Location for Joining
(see Page 14 for End Gasket)
First Gasket
Insert
Alignment
Screws
Apply Gaskets to
Insert
Alignment
Rods
1
in. Gasket
(24 mm)
Second
Gasket
5
1
/
in. (41 mm)
8
RIGHT END
Remove Shipping
Nut Retainer
Insert
Alignment
Pins
Page 11
Align End Frames
IMPORTANT: ALIGNMENT ORDER IS DIFFERENT FROM
TIGHTENING ORDER
! REFER TO THE ILLUSTRATION.
NOTE: Cases must be level before joining.
1. Insert alignment pin at lower front and lower
back.
2. Remove factory-installed nut retainer from
lower front end frame(s).
3. Move the second case as close to the first as
possible by pushing or using lever bar (mule).
4. Insert the alignment rod (1/4 in. diameter x
6 in.) through hole in top rail, align and insert
into second to rail. Refer to Glass Front detail
for location.
5. Match alignment pins with corresponding
holes in foam bottom and canopy.
REFER TO ALIGNMENT DIAGRAM AND
DETAIL VIEWS ON NEXT TWO PAGES
.
P/N 0463880_E 1-7
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Medium Temperature
Excel
A continuous bead of silicone sealant/
caulk may be used in addition to gaskets
on mating surfaces but must not be used
in lieu of gaskets.
Gasket Detail Views
Side View
Case Perimeter
To p
Foam-to-Metal Gap
Top View
Lap
Gaskets
Side
Rear
Rear
Page 12
1-8 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
Detail for
Glass
Front
Detail for
Standard
Front
Alignment
Rod
Detail for
Glass
Front
Page 13
P/N 0463880_E 1-9
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Medium Temperature
Excel
Tighten in Order Shown
F
2
C
Alignment order
1, 2, 3, 4, 5, 6
Tightening order
3
D
6
E
5
B
1
Use
Neoprene
Washers
Here
A, B, D, D, E, F
Do not use for joining
Remove clip if installed
A
4
Use
Neoprene
Washers
Here
Page 14
P/N 0463880_E WWW
.HUSSMANN.COM
1-10 I
NSTALLATION
6. In both holes in bottom shoe, place a 2 inch
neoprene washer between end frame and metal
washer of each case. Loosely assemble bolt,
washers, lockwasher and nut as shown below.
DO NOT TIGHTEN FULLY.
Do not attempt to draw cases together using
nut and bolt.
7. Insert a machine screw (#10 x 1
1
/4 in.)
through each hole in canopy end cap, align and
insert into joining canopy end cap. Fasten with
nuts. See detail at top right. Do not tighten
fully.
8. Draw canopies of multi-deck wall cases
together by using a bolt, flat washers, lockwasher and nut in the joining brackets atop the
canopy. See detail at top right. Tighten only
until canopies touch.
Fasten End Frames
1. Begin at lower back to draw end frames
tight.
2. Tighten joints in the order shown (A, B, D,
E, C) until gaskets are compressed, and cases
join smoothly.
3. Tighten screws in canopy end cap (F) to
complete smooth fit.
Seal Merchandisers
1. Remove wire shelf, interior front panel, and
interior panel support bracket to apply butyl
tape.
Lock Washer
Metal Washer
Neoprene
Washer
Nut
Detail for Connecting Canopies
of Multi-deck Wall Cases
Shelf
Interior Front Panel
Interior Panel Support
Bracket
Bring
butyl tape
up to this
point.
Metal
Washer
Bolt
Neoprene Washer
Case
Frames
End
Neoprene Washer
Metal
Washer
Lock
Washer
Nut
Flat Washer
Bolt
Joining
Bracket
Machine
Screw
#10 x 1
1
/4
Hex Nut
Hex Nut
Joining
Bracket
Lockwasher
Hex Nut
Page 15
P/N 0463880_E 1-11
Medium Temperature
Excel
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
2. Apply butyl tape across the bottom joint. Be
sure to extend the tape up the back and front of
the case.
Silicone sealer may be applied around joining
bolts on both sides in bottom shoe but isn’t
necessary if neoprene washers are used.
INSTALL SPLASHGUARD BRACKETS
Position splashguard brackets to the merchandiser
and level to the floor. Each bracket has a 1
1
/2 in.
(38 mm) slot at the rear of the bracket where it
attaches to the merchandiser. Tighten screws to
secure the brackets.
OFFSETTING BUMPER
Offsetting the bumper helps to disguise the joint
locations, giving the lineup a smoother look.
1. Locate starter bumper shipped with the leftend kit.
2. Remove factory
installed bumper by
pulling bumper away
from bumper retainer. Be careful not to
lose the internal
joint trim on the
bumper.
3. If not installed, install bumper end caps as
shown below.
4. Starting at the left end of the line up, install
the bumper starter section first. To install,
a. Position internal joint trims so that the
first is flush to the left-end panel and the
second is centered between the starter bumper
and the full length bumper as shown on the
next page.
To avoid leaks, install splashguard brackets
before installing drip piping.
Screws
Bumper Retainer
Bumper End Cap
Butyl Tape
Pull
.
Upper
Bumper
Internal
Joint Trim
Splashguard
Bracket
Screws
CAUTION
!
Leg
Page 16
1-12 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
b. Install full length bumpers and internal
trims offset across joints. Make sure that no
gaps exist between sections. Continue
installing the bumpers the length of the line
up.
5. Once all except the last section of bumper
have been installed refrigerate the case line up for
at least six (6) hours. The last section of bumper
should be kept inside a cooler or refrigerated
case during this time. This will allow the
bumper to contract.
6. Go to the right end of the line up and tap the
bumper to close any gaps.
7. Measure and cut last
sections of bumper. Use a
miter box and fine-tooth
saw to cut last bumper to
length. Install the last section.
8. Remove protective film from bumper once
installation is complete.
Merchandiser
Joint
Full Length
Bumper
Internal Joint Trims
Retainer
Starter
Bumper
Bumper
Miter Box
Page 17
P/N 0463880_E 1-13
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
INSTALLING PARTITIONS
To join same temperature fixtures on different
defrost cycles, an acrylic partition kit is
required.
To join unlike fixtures, or like fixtures operating
at different temperatures, a 1
1
/2 in. (38 mm) par-
tition kit is required. It must be installed when
setting the lineup.
Instructions for installing these partitions are
included with the kits.
INSTALLING END ASSEMBLIES
The following information is provided for field
or retrofit installation.
1. Prepare Case
a. Remove shelves (if installed), display
racks, pans, front shelf supports and front air
grilles from the section of case where end is
to be installed.
b. Remove the interior rear panel(s). On
multi-deck cases remove the lower back
panel first. To remove a panel, lift it up from
its bottom edge and out. No tools required.
c. Right End Only
Install Nut Retainers into right end frame at
locations shown.
d. Left End Only
Check that factory-installed Nut Retainers
are in place.
e. Remove bumper by pulling bumper away
from bumper retainers. Be careful not to lose
the internal joint trims.
f. Optional Front Rail Light Only
Check that end cap is in place before gaskets
are applied. See Page 1-19 for details.
2. Apply Gaskets to End Frame as Follows:
a. Apply the 1
5
/8
in. (41 mm) gasket to
canopy and rear of the case as shown on
Page 1-14. It must be at the edge. Check to
be sure that there are no gaps between
merchandiser and gasket.
b. Apply the 1 inch (25 mm) gasket from
front to back. It should lap the 1
5
/
8 in. gasket
at the rear. Check to be sure that there are no
gaps between case and gaskets. Refer to
details below.
Medium Temperature
Excel
Gasket
1
in. (24 mm)
Gasket
1
5
/8 in. (41 mm)
Detail for
Glass
Front
End Gasket
Page 18
1-14 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
IMPORTANT
• Do not stretch gasket, especially
around corners.
• Do not butt gaskets; always overlap
them as shown.
• Remove paper backing after gasket has
been applied.
• Perimeter gasket required by NSF.
• End caps required for rail light.
Gasket Location for
End Installation
(see Page 6 for Joining Gasket)
Gasket
1
in. (24 mm)
Gasket
5
1
/
in. (41 mm)
8
F
E
Insert Nut
Retainers
D
A
C
B
Remove
Alignment
Pin
(Left End Only)
Page 19
P/N 0463880_E 1-15
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
3. Fasten End Assembly to Merchandiser
a. Use Bolt and washer to fasten end
assembly to merchandiser
b. Use washer with Hex Nut to secure bolt
and washer at front (A) and canopy (F), similar to joining process.
c. Tighten in order shown on Page 1-14.
After fasteners have been tightened, insert
Plug Buttons.
Medium Temperature
Excel
A continuous bead of silicone
sealant/ caulk may be used
in addition to gaskets on the
end frame surfaces but must
not be used in lieu of gaskets.
Flat Washer
5
/16-WI Zinc
Cap Screw
5
/16-18 x 13/4
End Assembly
Cap Screw
5
/16-18 x 21/2
Plug Button
Page 20
1-16 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
d. Install Top and Bottom Corner Castings
as shown below.
Detail A
Detail A
Solid End
Top Corner
Casting
Detail B
Solid
Corner
Bumper
Casting
Screw
SM 8-18x
Hex Head
SM 8-18x
1
/2
Screw
Hex Head
Detail B
1
/2
Page 21
P/N 0463880_E 1-17
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
4. Install End Splashguard
a. Insert back of bracket through slot in leg.
Use Screws to attach End Splashguard
Retainers to end frame. Note: not all models
have two brackets per leg.
b. Align forward edge of End Splashguard
with front splashguard, with lower edge
resting on floor. Fasten End Splashguard to
bracket with Screws.
c. Slip End Splashguard Cover under end
assembly. Fasten to end splashguard and
upper brackets with Screws.
5. Seal End to End Frame
Remove front shelf and shelf support bracket.
Apply a
1
/2 in. bead of Silicone at the back of
the case, starting at the first slot. Continue
across the bottom and up the front as shown
below. Use field-supplied silicone in any gap
between front support bracket and end assembly.
Re-install bumpers as described beginning on
Page 1-11.
Note: Optional end bumpers
are factory-installed only.
Medium Temperature
Excel
Apply Silicone
Sealant
Seal
Glass
Front
End
Splashguard
Brackets
Screw
1
SM 8-18x
Hex Head
/2
End
Splashguard
Cover
Standard
End
Splashguard
Screw #8x1/2
Pan Head – Black
Page 22
1-18 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
FRONT GLASS ADJUSTMENT
The front glass panel may be adjusted from side
to side by following these steps:
1. Lift out return air grilles and shelf supports.
2. Loosen but do not remove nuts in retainer.
There are four nuts in each 4 ft section of glass.
3. Move glass panels horizontally as needed.
4. Tighten nuts enough to hold glass. Do not
over-tighten, which will crack or break glass.
5. Replace shelf supports and return air grilles.
Top Rail
Glass
Return Air Grille
(Remove)
Bumper
Retainer
Nut
Bolt
Shelf Support
Do not over-tighten nuts. Excess pressure
will cause glass to break.
CAUTION
!
Page 23
P/N 0463880_E 1-19
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
OPTIONAL FRONT RAIL LIGHT
Every case with an optional front rail light
assembly must have an end cap installed on
each end of the case when joining cases or when
ends are installed.
Caps snap on without tools or fasteners.
For reference, additional wiring detail is shown
on the next page.
Medium Temperature
Excel
DETAIL A
Installing End Caps for
Optional Front Rail Lights
Front Rail Light Shield
Front Rail
Light Channel
Assembly
A
Rail Light LH End Cap
Rail Light RH End Cap
Front Rail Light
Extrusion
Page 24
1-20 I
NSTALLATION
P/N 0463880_E WWW
.HUSSMANN.COM
Clip
Apply Silicone at
Screw Location
Before Piercing
Liner
Install Light Shields after
Assembly with Case
Route Cable Through Notch
in Case Base Rail Top
Rail Light End Cap
LH View
Page 25
Medium Temperature
Excel
P/N 0463880_E 2-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
REFRIGERANT
The correct type of refrigerant will be
stamped on each merchandiser’s serial plate.
The case refrigeration piping is leak tested,
factory sealed and pressurized. Before
making refrigeration 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 righthand end of the merchandiser (as viewed from the
front) beneath the display pans. A sticker marks
the location of the connection. The installer must
saw a hole to exit the case.
A refrigeration shroud ships with each case. Before making connections, place the refrigeration
shroud over refrigeration piping so that when the
shroud is rotated into place, it will be in the
upright position. The Figure 2-1 shows the correct
orientation.
Be careful not to burn, scorch or over-heat the
shroud when making connections.
Once connections have been made, apply silicone
sealant to the bottom of the shroud as shown in
Figure 2-2.
REFRIGERATION / ELECTRICAL
Refrigeration lines are under pressure
and should be depressurized before
attempting to make any connections.
Figure 2-1
Figure 2-2
Place shroud over
refrigerant piping.
!
WARNING
Refrigeration
Shroud
Complete piping
connections.
Apply Sealant
Page 26
2-2 R
EFRIGERATION
/ ELECTRICAL
P/N 0463880_E WWW
.HUSSMANN.COM
As shown in Figure 2-3, rotate and center the
shroud over the refrigeration outlet foam pad, then
fasten to the interior liner of the bottom.
After connections have been made, seal this
outlet thoroughly. Seal both the inside and the
outside. We recommend using an expanding
polyurethane foam insulation. Cover foam with
silicone to prevent water from entering foam.
Multiplexing
Piping of merchandisers operating on the same
refrigeration system may be run from case to
case. D
O NOT RUN REFRIGERANT LINES
THROUGH MERCHANDISERS THAT ARE NOT ON
THE SAME REFRIGERATION SYSTEM BRANCH
as
this may result in poor refrigeration control and
compressor failure.
Interconnecting piping inside the merchandiser
must be located as shown below to allow room
for lifting the hinged fan plenums and for
clearance beneath the display pans. Alternately,
the interconnecting piping may be run outside the
case in the area shown.
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.
Figure 2-3
Center shroud over refrigeration outlet
foam pad and fasten to interior liner.
Refrigeration
Connection
Pan
Fan Plenum
Piping
Locations
Page 27
Medium Temperature
Excel
P/N 0463880_E 2-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
INSULATION
Additional insulation for the balance of the liquid
and suction lines is recommended wherever
condensation 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).
Minimum Loop
3-in. (76 mm)
Liquid Line Take Off
8 Ft Case
(2438 mm)
Suction Line Return
12 Ft Case
(3658 mm)
Offtime Defrost
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
Liquid Line
Suction Line
Page 28
2-4 R
EFRIGERATION
/ ELECTRICAL
P/N 0463880_E WWW
.HUSSMANN.COM
REFRIGERATION THERMOSTAT
The bulb for the optional refrigeration thermostat
is located approximately 12 in. (305 mm) above
the coil and 6 ft (1829 mm) from the left-hand
end (facing front) of the merchandiser. The
optional refrigeration thermostat is located 3
1
/2 ft
(1067 mm) from the left-hand end, just past the
raceway. On wide island models, the thermostat
body is located on the serial plate side (front) of
the merchandiser.
DEFROST TERMINATION THERMOSTAT
The standard disc type defrost termination
thermostat is not adjustable. This thermostat
is clamped to the suction line of the coil on
the left-hand (facing front) end of the case.
E-Plus models do not use a defrost termination thermostat and are to be time terminated only.
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 evaporator
coil, melting any frost build-up. Defrost can be
terminated by either temperature or time.
Temperature Termination
Temperature termination should be used for the
following types of installations:
1. Parallel systems with EPRs or suction stop
solenoids
2. Single compressor units without pump-down
cycle.
Time Termination
Time termination should
be used for the following
types of installations:
1. All E-Plus models;
2. Parallel systems with
thermostat and liquid
solenoid; and
3. Single compressor units
with pump-down.
To use time termination,
simply do not wire the
termination thermostat.
Optional Refrigeration
Thermostat Bulb
Standard
Defrost
Termination
Thermostat
(1829 mm)
6 ft
3.5 ft
(305 mm)
12 in.
(1069 mm)
Optional
Refrigeration
Thermostat
Page 29
Medium Temperature
Excel
P/N 0463880_E 2-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
MERCHANDISER ELECTRICAL DATA
Technical data sheets are included with this
manual. The data sheets provide case electrical
data, electrical schematics, parts lists and performance data. Refer to the technical 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 defrost termination
thermostats and for optional refrigeration
thermostats. When multiple merchandisers are on
the same defrost circuit, the defrost termination
thermostats are wired in series.
AA LL WW AA YY SS CC HH EE CC KK TTHH EE SS EE RR II AA LL PP LL AA TT EE FF OO RR
CC OO MMPP OO NN EE NN TT AAMMPP EE RR EE SS
..
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 merchandiser’s raceway cover.
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.
P
INK ............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 OR COLORED 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
!
Page 30
2-6 R
EFRIGERATION
/ ELECTRICAL
P/N 0463880_E WWW
.HUSSMANN.COM
Notes:
Page 31
Medium Temperature
Excel
P/N 0463880_E 3-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
WASTE OUTLET AND WATER SEAL
Each merchandiser has two waste outlets. The
waste outlets are located in front of the fan
plenum 12 inches (305 mm) from either end of
the merchandiser. One water seal, two tees, and
two clean-outs are supplied for each fixture. The
water seal must be installed with the waste outlets to prevent air leakage and insect entrance into
the merchandiser.
INSTALLING DRIP PIPING
Poorly or improperly installed drip pipes can
seriously interfere with the merchandiser’s operation and result in costly maintenance and product
losses.
Optional drip pipe arrangements are shown on
the next page. It is the installing contractor’s
responsibility to consult local agencies for local
code requirements. Assemble the components
using field-supplied PVC primer and glue
according to the manufacturers direction.
Please follow the recommendations listed below
when installing drip pipes to ensure proper
installation.
1. Never use drip piping smaller than the nominal diameter of the pipe or water seal supplied
with the merchandiser.
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.
D
OUBLE 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.
Splashguard brackets MUST be installed
before piping case.
DRIP PIPING AND SPLASHGUARDS
CAUTION
!
Factory Furnished Items
To Be Installed
Cover
Collar Gasket
Items Factory Installed for Excel Waste Outlet
on Each End of Case
Water Seal
Tee
Clean-out
Page 32
3-2 DRIP PIPING AND SPLASHGUARDS
P/N 0463880_E WWW.HUSSMANN.COM
5. Provide a suitable air break between
flood rim of the floor drain and outlet of
drip pipe. To meet code on low base
merchandisers, 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 merchandisers or
between a merchandiser and a store wall,
provide means to prevent freezing.
It is the installing contractor’s responsibility to consult
local agencies for local code requirements.
Bottom of Case
Slope Slope
Always Slope Toward Floor Drain
Bottom of Case Bottom of Case
One Water Seal per Run of Drip Pipe
Optional Excel Drip Piping Arrangements
Page 33
Medium Temperature
Excel
P/N 0463880_E 3-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
INSTALLING SPLASHGUARDS
The splashguard is shipped inside each merchandiser. AFTER merchandisers have been leveled
and joined, and all drip piping, electrical and
refrigeration work has been completed, install the
splashguard.
To Install Splashguards:
1. Check to be sure that all splashguard brackets
are level with the floor.
2. Position top of splashguard with the top
angled in as shown in the illustration. Align the
slots in the upper edge of the splashguard with
the tabs extending downward behind the splashguard cover.
3. Engage the slots over the tabs and raise the
splashguard while pushing the bottom in.
4. Align the tabs on the splashguard brackets
with the slots in the bottom edge of the splashguard. Engage the tabs in the slots and drop the
splashguard into place.
To install the cove trim to the splashguard:
1. Remove all dirt, wax and grease from the area
of the splashguard where adhesion will be necessary to ensure a 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.
3. Install the trim to the splashguard so that it is
lying flush with the floor. D
O NOT SEAL THE TRIM
TO THE FLOOR
.
4. If required by local health codes the Cove
Trim may be sealed to the floor, using a silicone
type sealer. Sealant must be removed and
replaced when servicing.
1.
4.
2. & 3.
Trim
Base of
Case
Splashguard
Splashguard
Bracket
Tab
Splashguard
Cove Trim
Cement
Page 34
3-4 DRIP PIPING AND SPLASHGUARDS
P/N 0463880_E WWW.HUSSMANN.COM
NOTES:
Page 35
Medium Temperature
Excel
P/N 0463880_E 4-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
START UP
See the merchandiser's Technical Data Sheet for
refrigerant settings and defrost requirements.
Bring merchandisers 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.
D
O NOT 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 merchandiser data
sheets.
STOCKING
Product should NOT be placed
in merchandisers 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.
A
IR DISCHARGE AND RETURN FLUES MUST REMAIN
OPEN AND FREE OF OBSTRUCTION AT ALL TIMES
to
provide proper refrigeration and air curtain
performance. Do not allow product, packages,
signs, etc. to block these grilles. Do not use
non-approved shelving, baskets, display racks,
or any accessory that could hamper air curtain
performance.
LOAD LIMITS
Shelf life of perishables will be short if load limit
is violated. A
T NO TIME SHOULD MERCHANDISERS
BE STOCKED BEYOND THE LOAD LIMITS INDICAT
-
ED.
DO NOT BLOCK HONEYCOMB OR
RETURN AIR GRILLE
.
START UP / OPERATION
REMOVAL OF THE TEV CAP WILL RESULT IN
REFRIGERANT LOSS UNLESS THE SYSTEM IS FIRST
ISOLATED AND THE REFRIGERANT RECOVERED
.
CAUTION
!
CORRECT WRONG
PRODU CT
PRODU CT
PRODUC T
COLD AIR CURTAIN
PRODU CT
PRODU CT
PRODU CT
PRODU CT
COLD AIR CURTAIN
PRODUC T
PRODUCT
PRODUCT
0482814
Page 36
4-2 START U P / OPERATION
P/N 0463880_E WWW
.HUSSMANN.COM
MULTI-DECK SHELF ALIGNMENT
Taped to one of the shelves of each merchandiser
is a small plastic bag containing shelf alignment
strips. These strips are designed to enhance the
appearance of the shelves by aligning the front
edge of each shelf with that of an adjacent shelf.
When installing shelves:
1. Insert one of the alignment strips into the slot
behind the front edge of each shelf.
2. After all shelves are installed, slide the strip
across the shelf joint wherever two shelves
are adjacent. This will lock them together.
MULTI-DECK SHELF CONFIGURATION
The bottom display shelves can be adjusted to
accommodate shallow or volume displays (bulky
items such as hams or chickens). The upper
shelves are individually mounted in 1 in. (25 mm)
increments and have two-, three-, or four-position
brackets permitting shelves to be placed in a flat
or down-tilt position (see illustration). Front
product stops are recommended when shelves are
placed in the down-tilt position.
Case performance will be degraded if peg
shelves are used without baffles. Unauthorized
specialty shelving may cause poor case performance also. Consult your Hussmann representative to ensure optimum performance of
Hussmann equipment.
PROCEDURE FOR INSTALLING LIGHTED
SHELVES WITH SINGLE-PRONG
CONNECTOR
Please follow these instructions to ensure good
contact between male and female connectors.
Fluorescent Lamp
Shelf Connector
LED Light Shelf Connector
2-Position 3-Position 4-Position
Shelf Alignment Strip
5
/8 x 6 in. —16 x 152 mm)
(
Page 37
Medium Temperature
Excel
P/N 0463880_E 4-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
1. SHUT OFF POWER TO CASE. REMOVE
ALL SHELVES.
2. Engage each power socket cap and ensure
that each cap is fully seated before cleaning.
Ensure the proper seating of the cap at all
times when the plug is not engaged.
3. Clean the merchandiser as described in the
Care and Cleaning paragraphs of Section 5 –
Maintenance. Keep liquid out of sockets.
4. Verify that power is at the case and turned on.
Verify that the case light switch is turned
“OFF.” Switch is located in the canopy, on
the left, behind first row of lamps.
5. See the illustration below. It is typical of
D5X, C5X, and D6X models. Note that other
models will have fewer rows of shelves.
Starting from the left-hand bottom section,
choose the location for the first shelf, X-1.
Secure the shelf in the slotted upright. Make
certain that the shelf is level and that ends are
in the same slot on the left and right upright.
It is important that shelf brackets be properly seated in the slotted upright.
Light Switch Location
R
I
G
H
T
W
R
O
N
G
15 Sockets in
10 Sockets in
8-ft Case
X-14
X-13
X-11
X-10
X-8
X-7
X-5
X-4
X-2
X-1
12-ft Case
X-15
X-12
X-9
X-6
X-3
Socket with Cap Installed
Always work Left to Right,
and Bottom to Top
Page 38
4-4 START U P / OPERATION
P/N 0463880_E WWW
.HUSSMANN.COM
7. Working from left to right, install the next
shelf, X-2, to the right of the first shelf you
installed.
Always work from left to right and from the
bottom up in each 8 ft (2438 mm) and 12 ft
(3685 mm) case. After each shelf on the
bottom row is in position, be sure to remove
the cap and insert the shelf plug. Push firmly.
8. Turn “ON” the case light switch after the
entire bottom row has been installed in either
8 or 12 ft (2438 or 3658 mm) cases. The shelf
lights should light.
If a shelf LED lights do not operate,
A. Turn off light switch.
B. Remove and firmly re-insert each shelf
plug.
C. Turn on light switch.
Note: LED lamps use a 24VDC power supply.
If a shelf fluorescent lights do not operate,
A. Turn off light switch.
B. Make certain the shelf lamps are properly
engaged in the shelf lamp holders.
C. Remove and firmly re-insert each shelf
plug.
D. Turn on light switch.
Note: The ballasts used in Impact
Excel
models
have built-in anti-arc protection. An electrical arc
may occur if a shelf plug is not seated properly, or
if a lamp is not properly seated in a lampholder.
The ballast will shut down when it detects an arc.
Two to four lamps will be out in the merchandiser
when this occurs. Carefully check the plugs to
make sure they are fully seated, and check the
lamps to ensure they are firmly seated in the
lampholders on the affected shelves. To reset a
ballast that has ‘tripped’ on anti-arc, turn off the
case light switch for a minimum of 15 seconds,
then turn it on.
9. Using the row of shelves just installed as
support, set the next shelf, X-4, in the desired
location. Remove the cap and insert the shelf
plug. Continue working left to right installing
shelves X-5 and X-6.
Note: Since the location for the remaining
shelves, X-4 to X-15, may be directly over the
rear wall receptacle, the shelf should be plugged
in before engaging brackets in the uprights. The
lower shelf will support the weight of the next
shelf until it is plugged in. After installing each
shelf, verify that its plug is properly connected to
its rear wall receptacle. Continue working row by
row, bottom up, left to right.
INSTALLING FDA/NSF REQUIRED
THERMOMETER
The following pages provide the same information 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.
Page 39
Medium Temperature
Excel
P/N 0463880_E 4-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Suggested Mounting Locations
in Single Deck Glass Front
Impact Merchandisers
Package Guard,
Facing Out
Double Stick Tape
Flexible Plastic
Fits in Price Tag
Moldings
This is an NSF-7 &
US FDA Food Code
Required
Thermometer
Thermometer — Hussmann Part TM.4911251
Hussmann Corporation • 12999 St. Charles Rock Road • Bridgeton, MO 63044-2483
U.S. & Canada 1-800-922-1919 • Mexico 1-800-522-1900 • www.hussmann.com
© 2007 Hussmann Corporation
End Panel
Price Tag
Molding
Hussmann P/N 0429971_C 10/2007
Suggested Mounting Locations
in Multi-deck Merchandisers
Page 40
4-6 START U P / OPERATION
P/N 0463880_E WWW
.HUSSMANN.COM
Important – Please read!
This thermometer is provided in response to United States
Food and Drug Administration (US FDA) Food Code [ http://www.fda.gov/ ]
National Sanitation Foundation (NSF / ANSI) Standard 7 [ http://www.nsf.org/ ]
and
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.
Keep with merchandiser
or give to store manager.
DO NOT DESTROY.
Page 41
Medium Temperature
Excel
P/N 0463880_E 5-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
CARE AND CLEANING
Long life and satisfactory performance of any
equipment is dependent upon the care it receives.
To ensure long life, proper sanitation and minimum maintenance costs, these merchandisers
should be thoroughly cleaned, all debris removed
and the interiors washed down, weekly.
Fan Plenum
To facilitate cleaning, the fan plenum is hinged.
After cleaning be sure the plenum is properly
lowered into position
OR PRODUCT LOSS WILL
RESULT
due to improper refrigeration.
Removable Return Air Grille
The return air grille may be removed to facilitate
cleaning. Simply lift a four foot section up and
out as shown below.
Fascia Panels
The fascia panels lift
out, left to right, and
should be cleaned with
a mild detergent and
warm water.
D
O NOT USE AMMONIA-
BASED PRODUCTS TO
CLEAN OPTIONAL
ACRYLIC PANELS
.
N
EVER USE ABRASIVE
CLEANSERS OR
SCOURING PADS
.
Exterior Surfaces
The exterior surfaces must be cleaned with a mild
detergent and warm water to protect and maintain
their attractive finish. N
EVER 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.
Always read and follow the manufacturer's
instructions when using any cleaning product.
MAINTENANCE
Do not use HOT water on COLD glass surfaces.
This can cause the glass to shatter and could
result in personal injury. Allow glass fronts,
ends and service doors to warm before applying
hot water.
SHUT FANS OFF DURING
CLEANING PROCESS.
Do NOT allow product to sit in an
un-refrigerated area.
!
WARNING
!
WARNING
Glass
Front
Removable
Return Air
Grille
!
WARNING
Page 42
Do NOT Use:
•Abrasive cleansers and scouring pads, as these
will mar the finish.
• Coarse paper towels on coated glass.
•Ammonia-based cleaners on acrylic parts.
•A hose on lighted shelves or submerge the
shelves in water.
•Solvent, oil or acidic based cleaners on any
interior surfaces.
•A hose on rail lights, canopy lights or any other
electrical connection.
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.
•Thoroughly clean all surfaces with soap and hot
water. D
O NOT USE STEAM OR HIGH WATER
PRESSURE HOSES TO WASH THE INTERIOR
. THESE
WILL DESTROY THE MERCHANDISERS
’ SEALING
CAUSING LEAKS AND POOR PERFORMANCE
.
•Lift hinged fan plenum for cleaning. Hook chain
in rear panel to secure plenum during cleaning.
B
E SURE TO REPOSITION THE FAN PLENUM AFTER
CLEANING MERCHANDISER
.
•Take care to minimize direct contact between fan
motors and cleaning or rinse water.
•Rinse with hot water, but do NOT flood.
N
EVER INTRODUCE WATER FASTER THAN THE
WASTE OUTLET CAN REMOVE IT
.
•Allow merchandisers to dry before resuming
operation.
•Wipe down lighted shelves with a damp sponge
or cloth so that water does not enter the light
channel. D
O NOT USE A HOSE OR SUBMERGE
SHELVES IN WATER
.
•After cleaning is completed, turn on power to
the merchandiser.
CLEANING MIRRORS
Mirrors are sheets of clear glass that have very
thin reflective and protective coatings applied to
one side. These coatings are susceptible to
deterioration if certain cleaning solutions and
even water are allowed to come in contact with
them. Every precaution should be taken to keep
all liquids away from the coated side of the
mirrors. I
F LIQUIDS ARE ALLOWED TO FLOW ALONG
THE FACE SIDE OF THE MIRROR TO ITS EDGE
, THE
LIQUID CAN SEEP UP BETWEEN THE COATING AND
THE GLASS
, CAUSING SERIOUS DAMAGE
.
To Help Prolong the Life of the Mirrors:
•Use only mild cleaning solutions that do not
leave residue, such as a weak (10%) solution of
vinegar and water.
•Do NOT spray liquids on the mirrors. Away
from food, dampen the cleaning cloth, then use
the cloth to wipe the mirror.
•Wipe water from the mirrors immediately to
prevent difficult to remove water spots and also to
prevent the water from reaching the mirror’s edge.
•Never use dirty cloths, scrapers or any other
abrasive materials for cleaning.
CLEANING UNDER MERCHANDISERS
Remove splashguards not sealed to floor. Use a
vacuum with a long wand attachment to remove
accumulated dust and debris from under the
merchandiser.
5-2 MAINTENANCE
P/N 0463880_E WWW.HUSSMANN.COM
Do NOT allow cleaning agent or
cloth to contact food product.
!
WARNING
Page 43
Medium Temperature
Excel
P/N 0463880_E 5-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
CLEANING HONEYCOMB ASSEMBLIES
Honeycombs should be cleaned every six months.
Dirty honeycombs will cause merchandisers 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.
Multi-deck Cases
1. Loosen or remove screw to free honeycomb.
2. Clean and dry the honeycomb.
3. After cleaning, replace honeycomb and slide
retainer forward. Reinstall screw.
Damaged honeycomb must be replaced.
Single Deck Cases
1. Using a flat object such as a screw driver,
compress the honeycomb and remove it
from its retainer.
2. Clean and dry the honeycomb.
3. After cleaning, replace in reverse order.
LED Light Bars
Fluorescent Lamps
Honeycomb
Air Straightener
Honeycomb
Air Straightener
Honeycomb
Air Straightener
Retainer
Screw
Retainer
Screw
Page 44
5-4 MAINTENANCE
P/N 0463880_E WWW.HUSSMANN.COM
REMOVING INTERIOR BACK PANELS
The interior back panels may be removed for
cleaning and to gain access to the evaporator
coils. Remove the rear interior back panels as
follows:
1. D
ISCONNECT THE ELECTRICAL POWER TO THE
MERCHANDISER
.
2. Remove shelving.
3. Remove the lower panel first: lift the panel
up, then pull forward and out.
4. Remove the top panel.
5. Replace panels in reverse order, starting with
the top panel.
6. After cleaning or servicing the
merchandiser, reconnect the
electrical power.
REMOVING SCRATCHES FROM BUMPER
Most scratches and dings can be removed using
the following procedure.
1. Use steel wool to smooth out the surface area
of the bumper.
2. Clean area.
3. Apply vinyl or car wax and polish surface for
a smooth glossy finish.
Page 45
Medium Temperature Excel
P/N 0463880_E 6-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
REPLACING FAN MOTORS AND BLADES
See cross section for location of evaporator
fans. Should it ever be necessary to service or
replace the fan motors or blades be certain that
the fan blades are re-installed correctly.
For access to these fans:
1. Turn off power.
2. Remove bottom display pans.
3. Disconnect fan from wiring harness.
4. Remove fan blade.
5. Remove screws holding fan motor/bracket
assembly to plenum and remove assembly.
6. Replace fan motor/bracket assembly and
reinstall screws.
7. Reinstall fan blade.
8. Reconnect fan to wiring harness.
9. Turn on power.
10. Verify that motor is working and blade is
turning in the correct direction.
11. Close air gaps under fan plenum. Warmer air
moving into refrigerated air reduces effective
cooling. If the plenum does not rest against
the case bottom without gaps, apply foam
tape to the bottom of the fan plenum to
reduce improper air movement. Use silicone
sealant to close other gaps.
12. Replace display pans. Bring merchandiser to
operating temperature before restocking.
SERVICE
Always disconnect the electrical power
at the main disconnect when servicing
or replacing any electrical component.
This includes, but is not limited to, such
items as fans, heaters, thermostats and
lights.
!
WARNING
Fan Assembly
Servi c e
# MO.XXXXXXX
Speed-Nut
Screws
Bracket
Plenum
XXXXXXX
Fan Blade
Airflow
Direction
Motor
Page 46
6-2 SERVICE
REPLACING LED CANOPY LIGHT BARS
There are always two rows of canopy LED lights.
The rear light bar illuminates the upper section of
the case and the front light bar illuminates the
lower section of the case. The front and rear light
bars are labeled
FRONT and REAR respectively and
have a different shaped lens. They shall not be
interchanged.
The light bars are connected through a twoconductor connector. Push on the release tab on
the connector, then pull down on the connector.
Do not pull on wires. LED power source is
24-volts for safety.
The light bars are attached to the lamp panel
using clips. When replacing clips ensure that the
part number of the clip is the same as the original
clip. The clips are color coded to simplify identification of the proper clip to be used.
Light Bar Clips
Canopy LED Light Connector
P/N 0463880_E WWW.HUSSMANN.COM
Page 47
P/N 0463880_E 6-3
6 ft & 8 ft
12 ft
LH Shelves RH Shelves
Center Shelves
Canopy
LH Shelves CanopyRH Shelves
REPLACING LED SHELF LIGHT BARS
1. D
The LED shelf light bars are held in place using a
ISCONNECT POWER TO THE MERCHANDISER.
magnetic surface on the back of the light bar.
2. Remove light bars from the canopy.
P/N XXXXXXX AM P/N XXXXXXX DATE CODE: XXXX
COLOR TEMP: 2900 K INPUT VOLTAGE: 24VDC BLU)
LED Shelf Light Bar
P/N 0501208
LED
Shelf Light Bar
Connector
P/N 0501208
3. Remove the screws that secure the lamp
panel.
Label
Detail
4. Grasp the lamp panel at its front edge and
carefully pull down. It will swing freely from its
hinged rear edge.
5. Replace power supply and reassemble parts in
reverse order.
6. Reconnect the electrical power.
REPLACING LED POWER SUPPLIES
The LED power supplies for canopy lights and
shelf lights are located at the top of the merchandiser inside the canopy.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Power Supply
Canopy and Shelf LED Power Supply Arrangement
Medium Temperature Excel
Page 48
6-4 SERVICE
REPLACING FLUORESCENT LAMPS
Fluorescent lamps are furnished with moisture
resistant lamp holders, shields and end caps.
Whenever a fluorescent lamp is replaced, be
certain to reinstall the lamp shields and end caps.
The switch in the canopy controls all lamps in the
merchandiser.
Plastic Shield
Fluorescent Lamp
End Cap
Impact Excel
End-Cap
Groove
IMPORTANT!
Always replace lamp holders and end caps
with Hussmann lamp holders and end caps.
Use of non-Hussmann parts may result in
poor electrical contact and short lamp life.
REPLACING LAMP HOLDERS AND END CAPS
The Impact Excel lamp holder is designed to
snap into the sheet metal of the case. The lamp
holder has a locking ‘nub’ which fits inside the
groove of specially designed end caps.
Nub
Impact Excel
Lamp Holder
REPLACING ELECTRONIC BALLASTS
Rail Lamp Ballast
The rail lamp ballast is located in the raceway at
the left-hand end of the merchandiser.
To gain access:
1. D
ISCONNECT THE ELECTRICAL POWER TO THE
MERCHANDISER
.
2. Remove screws attaching the raceway cover,
then remove cover.
3. Service or replace ballast as required.
Reassemble items as they were originally
installed.
4. Reconnect the electrical power.
P/N 0463880_E WWW.HUSSMANN.COM
Page 49
Medium Temperature Excel
P/N 0463880_E 6-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Canopy and Shelf Lamp Ballasts
These ballast are located at the top of the
merchandiser inside the canopy.
1. D
ISCONNECT POWER TO THE MERCHANDISER
.
2. Remove fluorescent lamps from the canopy.
3. Remove the screws that secure the lamp
panel.
4. Grasp the lamp panel at its front edge and
carefully pull down. It will swing freely from
its hinged rear edge.
5. Replace ballast and reassemble parts in
reverse order.
6. Reconnect the electrical power.
Remove
Screw from
Each End of
Raceway
Raceway Access at Left Hand End
Access to Canopy and Shelf Ballasts
Canopy and Shelf Ballast Arrangement
Remove Screws
(3 on 8 ft case,
4 on 12 ft case)
Remove Front Lamp Assembly to Access Screws
6 ft & 8 ft
LH Shelves RH Shelves
12 ft
Canopy
LH Shelves CanopyRH Shelves
Center Shelves
Page 50
6-6 SERVICE
P/N 0463880_E WWW.HUSSMANN.COM
REPAIRING ALUMINUM COIL
The aluminum coils used in Hussmann merchandisers may be easily repaired in the field.
Materials are available from local refrigeration
wholesalers.
Hussmann recommends the following solders and
technique:
Solders
Aladdin Welding Products Inc.
P.O. Box 7188
1300 Burton St.
Grand Rapids, MI 49507
Phone: 1-800-645-3413
Fax: 1-800-645-3414
X-Ergon
1570 E. Northgate
P.O. Box 2102
Irving, TX 75062
Phone: 1-800-527-9916
NOTE:
Hussmann Aluminum melts at 1125°F (607°C)
Aladdin 3-in-1 rod at 732°F (389°C)
X-Ergon Acid core at 455°F (235°C)
Technique:
1. Locate Leak.
2. REMOVE ALL PRESSURE.
3. Brush area UNDER HEAT.
4. Use PRESTOLITE TORCH ONLY.
Number 6 tip.
5. Maintain separate set of stainless steel
brushes and USE ONLY ON ALUMINUM.
6. Tin surface around area.
7. Brush tinned surface UNDER HEAT,
thoroughly filling the open pores around leak.
8. Repair leak. Let aluminum melt solder, NOT
the torch.
9. Don't repair for looks. Go for thickness.
10. Perform a leak check.
11. Wash with water.
12. Cover with a good flexible sealant.
Page 51
To obtain warranty information
or other support, contact your
Hussmann representative.
Please include the model and
serial number of the product.
Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483 01 July 2005
®
Page 52
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