Service Merchandisers
Fresh Meat, Delicatessen, and Seafood Merchandisers
(Includes Wedge Installation)
NSF
®
Certified
Installation &
Operation Manual
Shipped With Case Data Sheets
P/N 0420057A.
Impact Series
July , 2001
IIMMPPOORRTTAANNTT
Keep in store for future reference!
®
Merchandisers
INSTALLATION
NSF Certification . . . . . . . . . . . . . . . . . . . 1-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Front Glass Caution . . . . . . . . . . . . . . . . . 1-1
Shipping Damage . . . . . . . . . . . . . . . . . . . 1-2
Exterior Loading . . . . . . . . . . . . . . . . . . . . 1-2
Merchandisers Shipped with End Installed 1-2
Shipping Braces . . . . . . . . . . . . . . . . . . . . 1-2
Shipping Rider . . . . . . . . . . . . . . . . . . . . . 1-2
Case Leveling . . . . . . . . . . . . . . . . . . . . . . 1-3
Preparation . . . . . . . . . . . . . . . . . . . . . . . 1-3
Leveler Adjustment . . . . . . . . . . . . . . . . 1-4
Glass Positioning . . . . . . . . . . . . . . . . . . . 1-5
Adjustment Bolt . . . . . . . . . . . . . . . . . . . . 1-6
Joining Instructions . . . . . . . . . . . . . . . . . . 1-8
Installing Coil Cover and Drip Tray . . . . . 1-8
REFRIGERATION / ELECTRICAL
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Refrigerant Piping . . . . . . . . . . . . . . . . . . . 2-1
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Suction Line . . . . . . . . . . . . . . . . . . . . . . . 2-2
Liquid Line . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Control Settings . . . . . . . . . . . . . . . . . . . . 2-3
Refrigeration Thermostat . . . . . . . . . . . . . . 2-3
Defrost Termination Thermostat . . . . . . . . 2-3
Defrost Sequences . . . . . . . . . . . . . . . . . . . 2-3
Merchandiser Electrical Data . . . . . . . . . . 2-4
Electrical Connections . . . . . . . . . . . . . . . . 2-4
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . 2-4
Identification of Wiring . . . . . . . . . . . . . . . 2-4
DRIP PIPING AND SPLASHGUARDS
Waste Outlet and Water Seal . . . . . . . . . . . 3-1
Installing Drip Piping . . . . . . . . . . . . . . . . 3-1
Installing Splashguards and
Lower Front Panels . . . . . . . . . . . . . . . . 3-2
Installing Bottom Rear Panel . . . . . . . . . . . 3-4
START UP / OPERATION
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Stocking . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Load Limits . . . . . . . . . . . . . . . . . . . . . . . 4-1
Load Limit Profiles . . . . . . . . . . . . . . . . . . 4-2
MAINTENANCE
Care and Cleaning . . . . . . . . . . . . . . . . . . . 5-1
Interior Cleaning Steps . . . . . . . . . . . . . . . 5-2
Removable Parts . . . . . . . . . . . . . . . . . . . 5-3
Fan Plenum . . . . . . . . . . . . . . . . . . . . . . 5-4
Drip Tray . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Removing Scratches from Bumper . . . . . . 5-6
SERVICE
Replacing Fan Motors and Blades . . . . . . . 6-1
Removing Polycarbonate Lamp Covers . . . 6-2
Replacing Fluorescent Lamps . . . . . . . . . . 6-3
Replacing Lamp Holders and End Caps . . 6-3
Replacing Electronic Ballast . . . . . . . . . . . 6-4
Replacing Cylinders —
Single Pane Glass . . . . . . . . . . . . . . . . . . 6-5
Replacing Single Pane Front Glass . . . . . . 6-6
Replacing Glass Hand Grip . . . . . . . . . . . . 6-7
Hinge Hardware . . . . . . . . . . . . . . . . . . . . 6-7
Repairing Aluminum Coils . . . . . . . . . . . . 6-8
WARRANTY
REVISION A
1. Added leveling detail beginning on page 1-3.
P/N 0420057A iii
TABLE OF CONTENTS
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards.
This merchandiser is NSF®certified.
12999 St. Charles Rock Road • Bridgeton, MO 63044 U.S.A. • (314) 291-2000 • FAX (314) 298-4767
®
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 lev el and relati v e 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.
P/N 0420057A 1-1
Service MerchandisersHUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
INSTALLATION
The top cylinders, which allow the raising and
lowering of this glass, have been carefully
installed and tested for the proper tension before
shipment. Howev er , during shipment and storage,
the lubricant inside the cylinders may have settled.
This settling can cause excessive or uneven tension on the glass to the point of breakage.
To avoid any damage, please do the following
before completely raising the front glass.
1. Slowly raise and lower each glass section
6 times to a height of 6 in. (152 mm).
2. Increase the height to about 12 in. (305 mm)
and raise and lower the glass 6 times.
3. Then raise the glass to the full extension
and lower.
This should release any settled lubricant in the
cylinders and prevent any stress on the front
glass.
Leveling and adjustment
procedures begin on
Page 1-3.
Read before raising front glass.
6 in.
6 in.
CAUTION
!
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.
EXTERIOR LOADING
Do NOT walk on top of merchandisers or
damage to the merchandisers and serious personal
injury could occur. Merchandisers
ARE NOT
STRUCTURALLY DESIGNED TO SUPPORT 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. Therefore, be sure to replace these
bolts with the shorter bolts provided. Refer to the
detailed information provided in the separate
End Kit Instruction shipped with each end.
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 fixture as close as possible to its permanent location and then remove all packaging and
shipping braces. Check for damage before discarding packaging. Remove all separately packed
accessories such as kits, and shelves.
Remove all nut retainers used with shipping
braces. NSF certification requires the use of ANSI
Standard nuts and bolts with not more than
2 threads showing after installation.
SHIPPING RIDER
Each case is shipped on a rider to protect factoryinstalled legs, and to make positioning the case
easier. Remove the rider after the case has been
positioned.
Note: Once the rider is removed, the case must
be lifted –NOT PUSHED– to reposition.
1-2 INSTALLATION
P/N 0420057A
Do NOT remove shipping braces until
the merchandisers are
positioned for installation.
Do not walk or put heavy objects on case.
!
WARNING
CAUTION
!
To remove the rider, remove screws attaching
each leg to rider. Remove screws holding rider
cross-members, then slide cross-members out
from between sides. Once cross-members are out,
slide the sides out.
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 glass position and operation must be maintained. Please review all steps
and photos before making any adjustments. DO
NOT make any glass adjustments until individual
case is set and level.
Preparation
1. Using store blueprints, measure off and mark
on floor the exact dimensions/locations of the
case footprint.
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.
P/N 0420057A 1-3
Service MerchandisersHUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
Cross-Members
Sides
Screws
(each leg)
Screws
Shipping Rider
for 8 ft Case
(two each end
of each
cross-member)
Leg
Leveler Adjustment
Position the first case at the highest point.
Set a long level (4 ft [1220 mm] or more) on
the upper front panel of the case. Use an
open-end wrench to turn leg levelers until the
case is level from end to end and from front
to back. Check all 6 legs on 8 ft (2438 mm)
cases, or 8 legs on 12 ft (3658 mm) cases.
Note: To avoid removing concrete flooring,
begin lineup leveling from the highest point
of the store floor.
Attention to glass position is critical during
the leveling process.
Adjusting leg levelers will affect the position
of the glass. Make certain that the glass is
square with the case, avoiding interference
with other glass and case ends.
If the glass is still out of alignment, refer to
the following Glass Positioning instructions.
1-4 INSTALLATION
P/N 0420057A
Glass must be
properly supported
when adjusting.
U
Level on
Upper Front
Adjustable
Leg Leveler
Panel
MINIMUM
HEIGHT
MAXIMUM
HEIGHT
Glass
Movement
Raise
Glass
Lower
CAUTION
!
Leg
Leveler
GLASS POSITIONING
Check the following to improve opening or closing of the case front glass.
1. Has the case been leveled according to
preceding paragraphs?
2. Is the glass handle installed correctly?
Verify the glass is bottomed out the length of the
handle. A bowed handle indicates the glass may
not be bottomed out at the center of the handle.
The handle must be removed before it can be
repositioned. The handle is held in place with
silicone which must be completely removed from
the handle and the glass. Remove the handle by
pulling it away from the glass (do not use tools to
pry this loose). A damaged or bent handle must be
replaced. Apply new silicone into the handle and
firmly press onto the glass.
3. Is the glass seated in the clamp hardware
correctly?
Verify glass is bottomed out in clamp hardware.
If the glass is not bottomed out in the clamp hardware it can be re-positioned as follows:
A. Remove the glass and clamp hardware from
the case by opening the glass and loosening
set screws in hinge, (Metric 3 millimeter set
screws).
B. Slide the glass and clamp hardware to the side
out of the hinges and lay them on an appropriate work surface.
Note: adjacent glass must be closed.
C. Loosen the 8 set screws on the underside of
the clamp hardware.
D. Push the clamp hardware onto the glass until
bottomed out.
E. The clamp hardware must overhang the glass
by an equal amount on each side.
F. Tighten set-screws and re-install on case.
P/N 0420057A 1-5
Service MerchandisersHUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
4. Is the glass hitting the end or adjacent glass?
Slowly open and close the glass to inspect.
If the glass is hitting the end or adjacent glass it
may not be positioned correctly from left to right.
This can be adjusted as follows:
• Loosen the 2 screws holding the hinge to the
clamp hardware (Metric 3 millimeter screws).
• Slide the clamp hardware to either side as
needed.
• Tighten the screws and check glass for proper
operation.
5. Is the glass still hitting adjacent glass? Slowly
open and close the glass to inspect.
Each glass has been shipped with a flexible wiper
gasket attached to each side. These are designed
to overlap each other, sealing the gap between the
glass and allowing side-to-side glass adjustment.
After all glass has been adjusted as defined in
Step 4, the flexible portion of one gasket at a joint
may be trimmed with a razor knife. Be sure that
the remaining wiper gasket seals the gap. Verify
proper operation.
ADJUSTMENT BOLT
If the glass still does not open or close correctly,
adjustment of the top frame may be necessary.
This case is equipped with an adjustment bolt at
the top rear of the case to raise or lower the glass.
This allows for improvements in the glass operation and sealing. The following outlines how to
access the adjustment bolt. The top must be free
to move as the adjustment bolt is turned.
1. Loosen joining or end bolts at top of case, (2
at each end of case).
2. If caulk or silicone has been applied between
case joints or ends in the top area it must be
removed.
3. Remove rear doors.
1-6 INSTALLATION
P/N 0420057A
Flexible Wiper Gasket
Glass
4. Remove screws at top of rear door frame. The
bottom screws do not need to be removed.
5. Pull back the top of the door frame approximately 2 inches. This will allow clearance for
removal of the stainless steel top liner and
trim pieces.
6. Some models have a Phillips truss head screw
holding the stainless steel liner to the trim.
These screws are visible from the rear of the
case to the side of the door frame. These must
be removed.
7. Remove stainless steel top liner by grabbing
the rear flange and pulling back. Note: It is
possible to access the adjusting bolt by using
a small swivel socket without removing the
stainless top liner. To do this, the stainless
steel trim and foam noted in Step 8 must be
removed.
8. Remove stainless steel trim pieces and foam
insulation on each side of the door frame.
9. The set screw and adjusting bolt are now
accessible.
• The set screw must be backed out before turning the adjusting bolt, (
1
/8inch set screw). The
set screw serves as a positive stop.
• The adjusting bolt should be turned no more
than a half-turn before inspecting glass position
and operation.
• Turning the adjusting bolt clockwise will raise
the front glass.
• Turning the adjusting bolt counter-clockwise
will lower the front glass.
• Once the glass position is set, tighten the set
screw (positive stop).
10. Once glass is positioned and operating
correctly, re-install components and hardware
removed.
Note: the door frame is designed to have a tight
fit. A putty knife between the top of the frame and
the insulated panel will help guide it into position.
P/N 0420057A 1-7
Service MerchandisersHUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
11. Re-apply caulk or silicone as required.
12. Verify glass is positioned and operating correctly.
JOINING INSTRUCTIONS
Sectional construction means that two or more
merchandisers may be joined in line yielding one
long continuous display requiring only one pair
of ends.
All joints must be air-tight to prevent formation
of ice or condensation.
Refer to the detailed information provided in the
separate Joining Instruction shipped with each
case.
INSTALLING COIL COVER AND
DRIP TRAY
Each gravity coil in these service merchandisers
has a 4 ft (1219 mm) stainless steel coil cover and
molded plastic drip tray . A condensate drip tube is
factory installed.
Check the drip tray for obvious damage before
installation. Damaged or leaking drip trays must
be replaced. Remove any loose debris and clean
the drip tray before installing.
Coil cover hooks and drip tray hooks are factory
installed at the front and back in each gravity coil.
Hanging holes are formed in the cover and drip
tray.
1-8 INSTALLATION
P/N 0420057A
Drip T ube
Connection
Coil Cover
Pivot Support
Adjusting Bolt
Set Screw
Positive Stop
From the back of the case, hang the coil cover
from the top hooks, then position the drip tray in
the case with the drip tube connection to your
right. Hang drip tray on two back hooks and two
front hooks.
Connect installed copper drip tube to drip tray
using flexible connector supplied.
Ensure condensate flows freely from drip tray
through drip tube. Check the drip tube connection
for leaks before stocking.
P/N 0420057A 1-9
Service MerchandisersHUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
s
Front Back
Drip Tray
Drip Tube
Connector
Coil
Cover
Coil
Drip T ra y Hook
Drip T ra y Hooks
Drip T ra y
Coil
Cover
Hooks
REFRIGERANT
The correct type of refrigerant will be stamped on
each merchandiser’s serial plate. The case refrigeration piping is factory sealed, pressurized and
leak tested. Before making refrigeration hookups,
depress 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 “pod. ”The installer
must saw a hole through the pod to exit the case.
After connections have been made, seal this outlet
thoroughly. Seal both the inside and the outside.
We recommend using an expanding polyurethane
foam insulation.
Multiplexing
Piping of merchandisers operating on the same
refrigeration system may be run from merchandiser to merchandiser. DO 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 allo w room for
lifting the hinged fan plenums and for clearance
beneath the display pans. The interconnecting
piping may be run outside the case.
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.
P/N 0420057A 2-1
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
REFRIGERATION / ELECTRICAL
Refrigeration lines are under pressure
and should be depressurized before
attempting to make any connections.
When brazing pipes be sure to use the
insulation blanket shipped with the
merchandiser to prevent damage to the
plastic case bottom.
!
WARNING
Piping Location
Display Pan
Fan
Coil
CAUTION
!
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
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.)
2-2 REFRIGERATION / ELECTRICAL
P/N 0420057A
Minimum Loop
3-in. (76 mm )
Liquid Line Take Off
Suction Line Return
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
Offtime Defrost
8 Ft Case
(2438 mm)
12 Ft Case
(3658 mm)
Liquid Line
Suction Line
CONTROL SETTINGS
Merchandiser data sheets are shipped with this
manual. The data sheets provide case control
settings and defrost data.
An evaporator pressure regulator or EPR
(primary control) and a 3 – 5ºF (1.7 – 2.7ºC)
differential thermostat (secondary control) must
control refrigeration temperature. The EPR must
be set to maintain the proper saturated evaporator
temperature as listed in the data sheets. The
thermostat must be set a couple degrees colder
than the discharge air temperature specified in the
data sheets. The thermostat will prevent product
freezing should the EPR temperature drift downward during reduced load periods (lights off,
lower ambient). The thermostat will be wired to
control the compressor motor contactor (single
compressor) or a liquid line solenoid valve
(parallel compressor systems).
Defrost is Off Time. Defrost control settings are
listed in the data sheets. When these merchandisers are connected to parallel compressor systems,
a suction stop valve must be used to isolate the
evaporator during defrost periods.
REFRIGERATION THERMOSTAT
The bulb for the optional refrigeration thermostat
is located in the discharge air of the evaporator.
The optional refrigeration thermostat is located
behind the exterior rear panel.
DEFROST TERMINATION THERMOSTAT
The standard disc type defrost termination
thermostat is not adjustable. This thermostat
is clamped to the inlet of the coil on the lefthand (facing front) end of the merchandiser.
P/N 0420057A 2-3
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
Standard Defrost
Termination
Thermostat
MERCHANDISER ELECTRICAL DATA
Merchandiser data sheets are shipped with this
manual. The data sheets provide case electrical
data, electrical schematics, parts lists and
performance data. Refer to the merchandiser 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. 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 merchandiser’s raceway.
2-4 REFRIGERATION / ELECTRICAL
P/N 0420057A
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
D
ARK BLUE ..DEFROST TERM.THERMOSTAT MAROON...RECEPTACLES
P
URPLE........C
ONDENSATE H
EATERS YELLOW....DEFROST HEATERS 120V
B
ROWN ........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
WASTE OUTLET AND WATER SEAL
The waste outlet is located in front of the fan
plenum 6 ft (1829 mm) from the left-hand of the
merchandiser (facing case front) allowing drip
piping to be run under the fixture lengthwise. A
11/2 in. (38 mm) water seal is supplied with each
fixture. The water seal must be installed to
prevent air leakage and insect entrance into the
fixture. A tee, adapter, ell, and plug have been
shipped to allow field installation to determine
direction of drain.
NOTES:
Water seal outlet must clear front skid rail.
PVC–DWV solvent cement is recommended.
Follow the manufacturer’s instructions.
INSTALLING DRIP PIPING
Poorly or improperly installed drip pipes can
seriously interfere with the operation of these
merchandisers, and result in costly maintenance
and product losses. Please follow the recommendations listed below when installing drip pipes to
ensure proper installation.
1. Nev er 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. Double water seals in series will cause
an air lock and prevent draining.
3. Pitch the drip piping in the direction of flow.
There should be a minimum pitch of 1/8 in. per
foot (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.
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 non-absorbent 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.
Note: To prevent condensation problems, the
water seal should be insulated.
P/N 0420057A 3-1
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
DRIP PIPING AND SPLASHGUARDS
INSTALLING SPLASHGUARD AND
LOWER FRONT PANEL
Make certain that the end assemblies, end
splashguards and end panels have been
installed according to the End Kit instruction.
The splashguard and lower front panel are
shipped inside each case. After merchandisers
have been leveled and joined, and all drip piping, electrical and refrigeration work has been
completed, install the splashguard and lower
front panel.
1. At front of merchandiser, attach a splashguard
retainer/bracket to each leg with sheet metal
screws.
2. Position top of splashguard over the top edge of
the retainer/bracket as shown below.
3. Push the lower edge of the splashguard toward
the bottom of hte bracket until it snaps into
place.
To Install Lower Front Panel
1. Position the lower front panel with the top
angled as shown in the illustration. Tabs
extending from the upper front assembly are
designed to fit into the slots on the top of the
lower front panel.
2. Once the top is positioned, lift the panel up and
drop it into the groove at the top of the splashguard.
Do not use additional fasteners or sealant to hold
splashguards or panels in place. To meet NSF
cleanability requirements, splashguards and
panels must be removable without tools.
3-2 DRIP PIPING AND SPLASHGUARDS
P/N 0420057A
1
Retainer/
Bracket
Leg of
Case
1
Tab
Lower
Front
Panel
Leg of
Case
2
Splashguard
3
Splashguard
Leg of
Case
Leg of
Case
2
Lower Front Panel
Leg of
Case
P/N 0420057A 3-3
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
LH-End
Panel
LH-End
Splashguard
Front Splashguard
Retainer / Bracket
3 for 8 ft — 4 for 12 ft
Leg
Assembly
Skid
Detail
Base
Leg
Leveler
Screws
Leg
Leveler
Lower Front
Panel Tab
3 for 8 ft
4 for 12 ft
Lower
Front
Panel
Front
Splashguard
Part of
End Kit
End
Rail
End
Bracket
End
Retainer
RH
End
Panel
RH End
Splashguard
and Corners
INSTALLING BOTTOM REAR PANEL
For fixed installation:
1. Align slots in bottom rear panel with center of
legs.
2. Drive a hex head sheetmetal screw through
each slot into each leg.
3-4 DRIP PIPING AND SPLASHGUARDS
P/N 0420057A
START UP
See the specific merchandiser's Data Sheet Set for
refrigerant settings and defrost requirements.
Bring merchandisers down to the operating
temperatures listed on the data sheet.
Each 4 ft (1219 mm) section has its own evaporator coil and pre-set non-adjustable thermostatic
expansion valve (TEV). No adjustment is
required. DO NOT REMOVE THE CAP ON THE
TEVS. This cap is to be removed only for valve
disassembly.
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.
AIR DISCHARGE AND RETURN FLUES MUST REMAIN
OPEN AND FREE OF OBSTRUCTION AT ALL TIMES
to
provide proper refrigeration and air curtain
performance. Do not allow product, packages,
signs, etc. to block these grilles. Do not use
non-approved shelving, baskets, display racks, or
any accessory that could hamper air curtain
performance.
LOAD LIMITS
Each merchandiser has a load limit decal.
Recommended load limit profiles are shown on
the next page.
Shelf life of perishables will be short if load limit
is violated. Overstocking will adversely affect
product temperature and merchandiser efficiency.
DO NOT BLOCK AIR GRILLE.
P/N 0420057A 4-1
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
START UP / OPERATION
Removal of the TEV cap will result in
refrigerant loss unless the system is first
isolated and the refrigerant recovered.
At no time should merchandisers be stocked
beyond the load limits indicated.
CAUTION
!
LOAD LIMIT
!
WARNING
LOAD LIMIT PROFILES
4-2 START UP / OPERATION
P/N 0420057A
SMB
SMG
Load Limit
Load Limit
SMBT
SMGT
Load Limit
Load Limit
Load Limit
SMBV
Load Limit
SMGV
Load Limit
SSG
SSGT
Load Limit
Load Limit
SSGV
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, at least weekly.
Exterior Surfaces
The exterior surfaces must be cleaned with a mild
detergent and warm water to protect and maintain
their attractive finish. NEVER USE ABRASIVE
CLEANSERS OR SCOURING PADS.
Interior Surfaces
The interior surfaces may be cleaned with most
domestic detergents, ammonia based cleaners and
sanitizing solutions with no harm to the surface.
Removable parts are labeled REMOVE FOR
CLEANING.
Removable stainless steel parts may be cleaned
and sanitized in dishwasher.
See next page for detailed direction.
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.
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.
• Turn off refrigeration, then disconnect
electrical power.
• 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 MERCHANDISER’S
SEALING CAUSING LEAKS AND POOR PERFORM-
ANCE.
• Lift or remove fan plenum for cleaning. Hook
chain in rear panel to secure plenum during
cleaning. Be 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.
NEVER INTRODUCE WATER FASTER THAN THE
WASTE OUTLET CAN REMOVE IT.
• Allow merchandisers to dry before resuming
operation.
• After cleaning is completed, turn on power to
the merchandiser.
P/N 0420057A 5-1
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
MAINTENANCE
ALWAYS SHUT POWER OFF
DURING CLEANING PROCESS.
Do NOT use HOT water on COLD glass
surfaces.This can cause the glass to
shatter and could result in personal
injury. Allow glass fronts, ends, and
service doors to warm before applying
hot water.
Do NOT allow product to sit in a
non-refrigerated area.
!
WARNING
!
WARNING
!
WARNING
INTERIOR CLEANING STEPS
STEP 1 – Remove product to cooler.
STEP 2 – Turn off refrigeration.
STEP 3 – Shut power off.
STEP 4 – Unplug shelves and close receptacle
caps, then
remove shelves.
5-2 MAINTENANCE
P/N 0420057A
Do NOT allow product to sit in a
non-refrigerated area.
Note that refrigeration controls
and power controls are not in
the merchandiser.Consult the
store legend or facility manager.
ALWAYS SHUT OFF POWER
DURING CLEANING PROCESS.
!
WARNING
41°F
(5°C)
!
WARNING
STEP 5 – Remove display pans.
STEP 6 – Lift out display pan support.
STEP 7 – Lift out discharge air grille.
STEP 8 – Lift out interior back panel.
STEP 9 – Lift out upper shelf supports.
STEP 10 – Lift out lower shelf supports.
P/N 0420057A 5-3
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
STEP 11 – Lift out return air grille (from
front).
STEP 12 – Rotate fan plenum up and back;
hook chain at rear of liner.
OR
Unplug fan harness.
Lift fan plenum up and back to remove.
(view is from the back)
5-4 MAINTENANCE
P/N 0420057A
STEP 13 – Remove drip trays.
Separate lower end of flexible connector from
drip tube (see page 1-4). Lift and rotate tray as
necessary to clear front and back hooks.
Hand wash drip trays. Sanitize drip trays and drip
tubes. Use paper toweling to dry inside and outside of trays before reinstalling.
STEP 14 – Clean inside the merchandiser.
Once interior parts have been removed, collect
loose debris for removal. Do not clog waste
outlet.
STEP 15 – Clean and sanitize according to
local requirements.
STEP 16 – Reassemble in reverse order.
Turn on power, then refrigeration. Make certain
merchandiser has cooled to operating temperature
before restocking.
P/N 0420057A 5-5
Service Merchandisers
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Printed in U.S.A.)
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.
5-6 MAINTENANCE
P/N 0420057A
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. THE BLADES
MUST BE INSTALLED WITH RAISED EMBOSSING
(PART NUMBER ON PLASTIC BLADES
) POSITIONED
AS INDICATED ON THE PARTS LIST. (Refer to the
case data sheet for each model.)
For access to evaporator fans:
1. Turn off power
2. Remove bottom display pans.
3. Disconnect fan from wiring harness.
4. Lift fan plenum out of case. Place on stable
work surface.
5. Remove screws holding f an bask et to plenum.
Fan blade may be removed after fan assembly
is removed from plenum.
6. Remove screws holding bottom of motor to
fan basket.
7. Replace fan motor and blade in fan basket.
8. Reinstall fan basket in plenum and reinstall
plenum in case.
9. Reconnect fan to wiring harness. Turn power
on.
10. Verify that motor is working and blade is
turning in the correct direction.
P/N 0420057A 6-1
Service Merchandisers
Hussmann Corporation • Bridgeton, MO 63044-2483 (Printed in U.S.A.)
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.
3
4
5
!
WARNING
For access to ambient fans:
1. Turn off power.
2. Remove lower front panel.
3. Disconnect fan from wiring harness.
4. Remove screws holding motor and grille.
5. Replace fan motor and grille.
6. Reconnect fan to wiring harness. Turn power
on.
7. Verify that motor is working and blade is
turning in the correct direction.
8. Replace lower front panel.
REMOVING POLYCARBONATE LAMP COVERS
The canopy and rail covers are removed without
tools. Apply pressure as shown in the photos until
the cover clears the retainer, then pivot out of the
retainer. Reinstall in reverse order.
Canopy Fixture
From the front of the case, grasp the cover with
both hands. Pull forward until the back of the
cover clears the retainer, then rotate down and
out.
Rail Fixture
From the front of the case, grasp the cover with
both hands. Pull forward and up until the back of
the cover clears the retainer.
6-2 SERVICE
P/N 0420057A
Screws
ELECTRICAL SERVICE RECEPTACLES
The receptacles located on the exterior back of the
merchandisers are intended for scales and other
light duty appliances that are found in meat and
delicatessen departments. The receptacles are not
intended for large motors.
REPLACING FLUORESCENT LAMPS
Fluorescent lamps are furnished with moisture
resistant lamp holders and end caps. Lamps on
lighted shelves have plastic shields. Whenever a
fluorescent lamp is replaced, be certain to reinstall the plastic shields and end caps.
REPLACING LAMP HOLDERS AND END CAPS
The Hussmann Impact 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.
P/N 0420057A 6-3
Service Merchandisers
Hussmann Corporation • Bridgeton, MO 63044-2483 (Printed in U.S.A.)
Groove
Nub
Hussmann
Impact
End-Cap
Hussmann
Impact
Lamp Holder
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.
Fluorescent
Lamp
Plastic Shield
End Cap
REPLACING ELECTRONIC BALLAST
Lamp Ballast
The lamp ballast are located in the raceway,
behind the back lower panel at the left-hand end
of the merchandiser (facing rear of case). NOTE:
The switch for the lamp is located in this panel.
To gain access:
1. Disconnect the electrical power to the merchandiser.
2. Remove the left lower rear panel.
3. Service or replace ballast as required.
Reassemble items as they were originally
installed.
4. Reconnect the electrical power.
6-4 SERVICE
P/N 0420057A
Ballast Located
Behind This Panel
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.
Remove Screws Holding Panel in Place
Light Switch Below
!
WARNING
REPLACING CYLINDERS — SINGLE PANE GLASS
When cylinders need to be replaced, the lifting
force of the cylinder must be known. The lifting
force can be determined by the data printed on the
cylinder being replaced. The following shows the
part number for the 300N and 400N cylinders.
300N Cylinder – P/N 0412539
400N Cylinder – P/N 0406925
1. Raise the front glass to open completely.
2. Use special hand tool, shown in photo, to
compress and remove cylinder.
Note: Cylinders cannot be removed without
special hand tool.
Cylinder
Removal
Tool
P/N 0425326
P/N 0420057A 6-5
Service Merchandisers
Hussmann Corporation • Bridgeton, MO 63044-2483 (Printed in U.S.A.)
Once cylinders are removed,
front glass will have NO support
to maintain it in a raised position.
Support the front glass at all times
until cylinder is replaced
or the glass is lowered.
Cylinder rods must point down so
oil will lubricate the rod and seals. Failure to
lubricate will severely shorten cylinder life.
Glass is heavy and can cause
bodily damage. Check support
cylinders for periodic maintenance.
Cylinders are a wear item.
They are designed:
• to support the glass when fully open.
• to allow the glass to come down
(or close) slowly.
Have your Service Contractor replace the
cylinders when required.
Removing a Cylinder
!
WARNING
CAUTION
!
!
WARNING
CAUTION
!
6-6 SERVICE
P/N 0420057A
REPLACING SINGLE PANE FRONT
GLASS (Requires more than one person.)
1. Raise the front glass to open completely.
2. Loosen all set screws along the inside bottom
of the glass clamp.
Note: All cylinders do not have to be removed to
remove the glass
IMPORTANT
When reinstalling glass, be certain that:
1. Gasket is on glass evenly.
2. Glass bottom is fully in retainer.
3. When set screws are tightened, glass is firmly
held in place by the glass clamps.
Set Screw Locations
Once set screws are loose, the glass and
glass clamp have NO support or retain-
ers. Support the front glass at all times
until the top glass clamp and set screws
are secured, or glass is removed.
!
WARNING
Fully Engage Glass
in Clamp
Gasket
REPLACING GLASS HAND GRIP
The hand grip is fastened to the curved glass as
shown below. A 2 inch (51 mm) bead of silicone
needs to be placed 3 inches (76 mm) from each
end and in the center of the hand grip. The duct
tape is placed on the glass to provide a tight fit.
HINGE HARDWARE
Type: Two cylinders and one fastening point.
P/N 0401884
Used on: 8 ft and 12 ft (2438 mm and 3658 mm)
parent cases and as a joining bracket.
Type: Two cylinders and three fastening points.
P/N 0407352
Used on: 30° outside wedge.
Type: Three cylinders and four fastening points.
P/N 0412538
Used on 90° inside wedge, 45° outside and inside
wedge, 30° inside wedge.
Note: This hinge assembly, when used on the 90°
and 45° inside wedge, uses only two cylinders.
Type: Four cylinders and five fastening points.
P/N 0413170
Used On: 90° outside wedge.
P/N 0420057A 6-7
Service Merchandisers
Hussmann Corporation • Bridgeton, MO 63044-2483 (Printed in U.S.A.)
3
/8 in. (10 mm) of
Duct Tape on Each
Side of Bottom
Duct Tape
Edge of Glass
Glass
3
/8 in. (10 mm)
Start 2 in. (51 mm)
Silicone Bead
3 in.
(76 mm)
3 in. (76 mm)
From Each End
Glass Grip
REP AIRING 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.
6-8 SERVICE
P/N 0420057A
®
To obtain additional information or other support,
contact your Hussmann representative.
Please include the model and serial number of the product.
The full product warranty is available from our website,
www.hussmann.com
Hussmann Corporation, Corporate Headquarters: Bridgeton, Missouri, U.S.A. 63044-2483 01 July 2005
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