Hussmann MWG, MWGE, PWI, PWIC, PWW Installation And Operation Manual

...
Page 1
Medium Temperature
Meat, Delicatessen, Dairy and Produce
Merchandisers
Installation &
Operation Manual
Shipped With Case Data Sheets
P/N 0378414G
Impact Series
IIMMPPOORRTTAANNTT
Keep in store for future reference!
®
Merchandisers
Page 2
INSTALLATION
NSF Certification . . . . . . . . . . . . . . . . . . . . 1-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Shipping Damage . . . . . . . . . . . . . . . . . . . . 1-1
Exterior Loading . . . . . . . . . . . . . . . . . . . . . 1-2
Merchandisers Shipped with End Installed . . 1-2
Shipping Braces . . . . . . . . . . . . . . . . . . . . . . 1-2
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Joining Instructions . . . . . . . . . . . . . . . . . . . 1-4
Splashguard Bracket and Joint Support . . . . 1-6
Offsetting Bumpers and Top Rail . . . . . . . . . 1-7
REFRIGERATION / ELECTRICAL
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Refrigerant Piping . . . . . . . . . . . . . . . . . . . . 2-1
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Suction Line . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Liquid Line . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Refrigeration Thermostat . . . . . . . . . . . . . . . 2-3
Defrost Termination 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 . . . . . . . . . . . . . . . . . . 3-3
Sealing Splashguard to Floor . . . . . . . . . . . 3-4
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
Cleaning Under Merchandisers . . . . . . . . . . 5-2
Cleaning Mirrors . . . . . . . . . . . . . . . . . . . . . 5-2
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 Fluorescent Lamps . . . . . . . . . . . 6-2
Replacing Lamp-holders and End Caps . . . . 6-2
Replacing Electronic Ballasts . . . . . . . . . . . . 6-3
Replacing Damaged Drain Fitting . . . . . . . . 6-4
Repairing Aluminum Coils . . . . . . . . . . . . . 6-4
WARRANTY
REVISION G
1. Changed starter bumper, page 1-7.
2. Added bumper film removal, page 1-8.
3. Added installing optional stainless steel splashguard, separated sealing standard and optional splashguards to floor, pages 3-3 and 3-4.
4. Updated load limit profiles, pages 4-1 and 4-2.
5. Updated shelf bracket profile, page 4-2.
6. Added do not use ammonia-based cleaners on acrylic parts, page 5-1.
7. Added damaged honeycomb must be replaced, page 5-3.
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards.
12999 St. Charles Rock Road • Bridgeton, MO 63044 U.S.A. • (314) 291-2000 • FAX (314) 298-4767
TABLE OF CONTENTS
P/N 0378414G
®
Page 3
Medium Temperature
P/N 0378414G 1-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

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.
The exterior frames on these cases provide space 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.

Wide Island Fronts

BE SURE TO POSITION WIDE ISLAND MERCHANDISER
FRONTS PROPERLY
. The front of wide island merchandisers is readily identified by the location of the serial plate (see leveling drawing on next page). 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.

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 4
1-2 I
NSTALLATION
P/N 0378414G

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. THEREFORE, 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.

LEVELING

Merchandisers must be installed level to ensure proper operation of the refrigeration system and to ensure proper drainage of defrost water. When leveling merchandisers, use a carpenter’s level as shown. Leveling shims are provided with each merchandiser for use if needed. The shims are big enough so that you can level adjoining merchan­disers at the same time using one shim.
NOTES:
• B
EGIN LINEUP LEVELING FROM THE HIGHEST POINT
OF THE STORE FLOOR.
• If shimming two corners, check to see if a shim is needed in the center of the merchandiser. If a gap exists between the support rail of the merchandiser and the floor, a shim should be placed in the center.
Do NOT remove shipping braces until
the merchandisers are positioned
for installation.
Rear
Levels
Serial Plate
Front of Merchandiser
!
WARNING
Page 5
Medium Temperature
P/N 0378414G 1-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
NOTE: Do not place levels
on Display Pans or on Shelves.
Leveling Single Deck
Merchandisers
Leveling Multi-deck
Merchandisers
Levels
Levels
Shim
Page 6
1-4 I
NSTALLATION
P/N 0378414G
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.

Prep Case

1. Check to be sure that merchandisers are level and that the factory-installed nut retainers and alignment pins are in place. Locate Joint Kit and check contents against parts list.
2. Remove shelves (if installed), display racks, pans, front shelf supports and front air grilles from the right end.
3. Remove the rear 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 are required.

Apply Gaskets

1. Apply
1
/2 in. (13 mm) gasket in the horizontal recess across the bottom and up the front of the merchandiser as shown. Gasket should cover slots.
2. Apply the 1
5
/8
in. (41 mm) gasket to cover foam-to-metal gap at rear of case and across the top as shown. Be sure to overlap gaskets as shown. Check to be sure that there are no gaps between gasket and merchandiser.

Fasten Cases

1. Move the second merchandiser into position against the first. Match the alignment pins with the corresponding holes.
2. Fasten fronts together using cap screws, flat washers, lock washers and nuts. Tighten only until front panels touch. Do not tighten
fully.
3. Use the cap screws, flat washers and lock washers provided in the joint kit to draw the merchandisers together at rear. Do not
tighten fully.
4. Draw canopies of multi-deck wall merchandisers together by inserting threaded rod through top shoe as shown. Fasten each end with washers and nuts. Tighten only until
canopies touch.
5. Tighten joints in the order shown (A, B, C, D) until gaskets are compressed, and cases join smoothly.
PW & MWG
models
C
B
15/8 in. Gasket (41 mm)
1
/2 in. Gasket (13 mm)
A
Page 7
Connecting Canopies
of Multi-deck Wall Cases
Tighten in Order Shown
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.
Medium Temperature
P/N 0378414G 1-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
Threaded Rod
Flat Washer
Hex Nut
E
A
Alignment Bullets
15/
in. Gasket
8
(41 mm)
1
/
in. Gasket
2
(13 mm)
D
C
B
Glass
Front
Detail
A
Alignment Pins
15/
in. Gasket
8
(41 mm)
1
/
in. Gasket
2
(13 mm)
C
B
Page 8
1-6 I
NSTALLATION
P/N 0378414G

Seal Merchandisers

1. Apply butyl tape across the bottom joint. Be sure to extend the tape up the back and front of the case.
2. Use field-supplied silicone to fill any gaps between the front support brackets.

SPLASHGUARD BRACKET AND JOINT SUPPORT

Install Splashguard Bracket

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.

Install Splashguard Joint Support

Position the joint support across the brackets as shown above. Fasten with hex head sheet metal screws.
Butyl Tape
Screw
Silicone Field Supplied
Front
Detail
Joint Support
Bracket
Base of Case
Page 9
Medium Temperature
P/N 0378414G 1-7
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

OFFSETTING BUMPERS AND TOP RAIL

Offsetting the bumpers and top rails helps to disguise the joint locations, giving the lineup a smoother look.
1. Locate starter bumpers and top rail. They are shipped with the left-end kit.
2. Remove factory installed top rails and bumpers from cases as follows:
a. To remove top rails, push rail toward the
back of the case with one hand while lift­ing the top edge off the light channel with the other hand. See drawing below.
b. Starting at one end, carefully peel bottom
of top rail free of color panel and set the rail inside the case.
c. Remove upper and lower bumpers by
pulling bumper away from bumper retain­ers. Be careful not to lose the internal joint trims on the upper bumpers.
3. Starting at the left end of the line up, install the upper 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 below.
b. Install full length bumpers and internal
trims offset across joints. Make sure that no gaps exist between sections. Continue installing the upper bumpers the length of the line up. Do NOT install the last upper bumper section at this time. This section will be installed in the last step.
4. Install lower bumper starter and full length lower bumpers by simply pushing them into place. There are no internal joint trims on the lower bumpers.
Step 2-b.
Step 2-a.
Step 2-c.
Retainer
Merchandiser Joint
Full Length Bumper
Starter Bumper
Internal Joint Trims
Push
Pull
Lift
Push
Pull
Upper Bumper
Internal Joint Trim
Page 10
5. Return to the left end of the line up and position the starter section of the top rail as shown.
NOTE: The top rail should not be installed until the upper bumper is securely in place.
6. Push the bottom portion of the short top rail section down over the color panel. It helps if you lift the top with your other hand as shown. You will hear and feel the trim “snap” into place.
NOTE: The trim must “snap” to be properly positioned.
7. Use one hand to push the top rail toward the rear of the case while using the other hand to “snap” the top section down over the edge of the light channel as shown.
Again, be sure it “snaps” into place.
8. Install full length top rails using the same procedures. Continue installing the top rails the length of the line up. Do NOT install last section at this time.
9. Once all except the last sections of upper bumper and top rail have been installed refrigerate the case line up for at least six (6) hours. The last sections of upper bumper
and top rail should be kept inside a refrig­erated case or cooler during this time. This
will allow the bumpers and top rails to con­tract.
10. Go to the right end of the line up and tap the top rail and bumpers to close any gaps.
11. Measure and cut last sections of top rail and bumpers. Use a miter box and fine­tooth saw to cut last bumpers and top rail to length. Install the last sections.
Note: If part of plastic top rail pops loose, remove that section of top rail and re-install according to Steps 6 and 7 above. Trying to re­install only the popped part may not secure the top rail, and may damage the top rail, color panel and light channel.
12. Remove protective film from bumper and top rail once installation is complete.
GLASS FRONT CASE ONLY: Apply field-
supplied silicone sealant to underside of end trim and press firmly in place.
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 11/2 in. (38 mm) par- tition kit is required.
Instructions for installing these partitions are included with the kits.
1-8 I
NSTALLATION
P/N 0378414G
Push
Snap
Lift
Bumper
Miter Box
Push
Push
Snap
Page 11
Medium Temperature
P/N 0378414G 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 “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 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. Or the inter­connecting piping may be run outside the case in the raceway 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.

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
CAUTION
!
Pan
Pod
Piping Locations
Fan Plenum
Page 12
2-2 R
EFRIGERATION
/ ELECTRICAL
P/N 0378414G

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).
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 13
Medium Temperature
P/N 0378414G 2-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

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 5 ft (1524 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.

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

Should be used for the following types of instal­lations:
1. Parallel systems with thermostat and liquid solenoid.
2. Single compressor units with pump-down.
To use time termination, simply do not wire the termination thermostat.
Optional Refrigeration Thermostat Bulb
(1829 mm)
6 ft
Standard Defrost
Termination
Thermostat
12 in.
(1524 mm)
5 ft
(305 mm)
Optional Refrigeration Thermostat
Page 14
2-4 R
EFRIGERATION
/ ELECTRICAL
P/N 0378414G

MERCHANDISER ELECTRICAL DATA

Merchandiser data sheets are included 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.

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
B
ROWN ........FAN MOTORS RED ........DEFROST HEATERS 208V
G
REEN* .......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 15
Medium Temperature
P/N 0378414G 3-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

WASTE OUTLET AND WATER SEAL

The waste outlet is located in front of the fan plenum 6 ft (1829 mm) from the left-hand end of the merchandiser (facing case front). A water seal is supplied with each fixture. The water seal must be installed to the waste outlet to prevent air leakage and insect entrance into the fixture.
NOTE: Water seal outlet must clear front skid rail.
A Tee, adapter, plug and street ell are also sup­plied with each 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. 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.
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.
Splashguard brackets MUST be installed
before piping case.

DRIP PIPING AND SPLASHGUARDS

CAUTION
!
Page 16
3-2 DRIP PIPING AND SPLASHGUARDS
P/N 0378414G
See the case data sheet set for dimensions. Each waste outlet will be interconnected with factory installed drip piping. When a 6 ft (1829 mm) end merchandiser is ordered to be joined to a center case at the factory, its waste outlet can also be interconnected as shown. A drain piping connect kit is required.
Each merchandiser is supplied with a 2 in. (51 mm) water seal, an adapter, a plug and a street ell. The street ell and water seal must be installed to prevent air leakage and insect entrance into the merchandiser. They should be installed as shown below.
Produce / Meat Wide Island Merchandisers
End Case 6, 8 or 12 Ft Case
(1829, 2438 or 3658 mm Case)
Base
Cleanout Adapter and Plug Standard
Raceway
NOTE:
Water seal outlet must clear front skid rail.
Page 17
Medium Temperature
P/N 0378414G 3-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
INSTALLING SPLASHGUARDS & LOWER FRONT PANELS
The splashguard and lower front panel are 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 and lower front panel.
NOTE: Merchandisers with low bases do not have lower front panels and require only the installation of splashguards.
To Install Splashguards:
1. Check to be sure that all splashguard brackets are level with the floor.
2. Position top of splashguard over the top edge of the bracket as shown below.
3. Push the lower edge of the splashguard toward the bottom of the 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 below.
2. The tabs extending from the upper front panel assembly are designed to fit into the slots on the top of the lower front panel.
3. Once the top is positioned, lift the panel up and drop it into the grove at the top of the splashguard.

SEALING SPLASHGUARD TO FLOOR

I
F REQUIRED
by local sanitation codes, or if desired by the customer, plastic splashguards may be sealed to the floor using silicone type sealer. The amount needed will depend on how much the floor is out of level.
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 silicone type sealer along the
bottom of the splashguard. Sealant must be removed and replaced when servicing.
Silicone-type Sealer
Splashguard
Lower Front Panel
3.
Tab
Lower Front Panel
1. &
2.
3.
Splashguard
2.
Bracket
Base of Case
1.
Splashguard
Lower Front Panel
Bracket
Base of Case
Page 18
3-4 DRIP PIPING AND SPLASHGUARDS
P/N 0378414G

INSTALLING OPTIONAL STAINLESS STEEL SPLASHGUARDS

The O
PTIONAL S
tainless steel splashguard is also
shipped inside the merchandiser. A
FTER all the
merchandisers have been leveled and joined, and all drip piping, electrical and refrigeration work has been completed, install the O
PTIONAL Stain-
less steel splashguard and, if appropriate, the lower front panel.
To Install Splashguards:
1. Check to be sure that all splashguard brackets are level with the floor.
2. Position top of splashguard over the top edge of the bracket as shown below.
3. Push the lower edge of the splashguard toward the bottom of the 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 below.
2. The tabs extending from the upper front panel assembly are designed to fit into the slots on the top of the lower front panel.
3. Once the top is positioned, lift the panel up and drop it into the grove at the top of the splashguard.
OPTIONAL Stainless steel splashguards may be sealed to the floor using a vinyl cove base trim. The size of trim needed will depend on how much the floor is out of level.
To install the trim to the splashguard:
1. Remove all dirt, wax and grease from the area of the splashguard where adhesion will be necessary 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.
2.
Splashguard
3.
Splashguard
1. &
2.
Bracket
Tab
Lower Front Panel
Base of Case
3.
Splashguard
Cement
Cove Trim
Lower Front Panel
Lower Front Panel
Base of Case
Bracket
Page 19
Medium Temperature
P/N 0378414G 4-1
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

START UP

See the merchandiser's Data Sheet Set 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.
DO 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.

LOAD LIMITS

Each merchandiser has a load limit decal. Shelf life of perishables will be short if load limit is violated. A
T NO TIME SHOULD MERCHANDISERS BE
STOCKED BEYOND THE LOAD LIMITS INDICATED.
D
O NOT BLOCK HONEYCOMB.

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.
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.

START UP / OPERATION

REMOVAL OF THE TEV CAP WILL RESULT IN
REFRIGERANT LOSS UNLESS THE SYSTEM IS FIRST
ISOLATED AND THE REFRIGERANT RECOVERED
.
CAUTION
!
Honeycomb
LOAD LIMIT
Return Air
Load Limit
Honeycomb
Return Air
Load Limit
Page 20

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
Shelf lighting uses parallel wiring. Please follow these instructions to ensure good contact between male and female connectors.
1. SHUT OFF POWER TO CASE. REMOVE
ALL SHELVES.
4-2 START UP / OPERATION
P/N 378414F
Shelf Alignment Strip
5/8 x 6 in. – 16 x 32 mm)
2-Position 3-Position 4-Position
Shelf A l i gnment Stri p
5
/8 x 6 in.16 x 152 mm)
(
Page 21
Medium Temperature
P/N 0378414G 4-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
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 D5, C5, and D6 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.
6. Remove the cap from the rear wall socket and insert the shelf plug in the socket. Secure cord under clip.
Push in clip
Socket with Cap Installed
10 Sockets in
8-ft Case
15 Sockets in
12-ft Case
Always work Left to Right,
and Bottom to Top
X-1
X-4
X-7
X-10
X-13
X-2
X-5
X-8
X-11
X-14
X-3
X-6
X-9
X-12
X-15
Light Switch Location
R
I G H T
W
R O N G
Page 22
4-4 START UP / OPERATION
P/N 0378414G
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 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.
If lights do not operate after checking the items listed above, contact the installation
contractor.
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.
Important
If a shelf is plugged in and the lamp does not work, verify:
A. the case light switch is “ON” and B. that the shelf lamp is properly engaged in the
shelf lamp holders.
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 23
Medium Temperature
P/N 0378414G 4-5
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
This is an NSF-7 &
1999 FDA Food Code
Required
Thermometer
Thermometer — Hussmann P/N 430108
Double Stick Tape
— Inside End Panel
— Shelf Price Tag Molding
— Return Air Grille
Suggested Mounting Locations
in Multi-deck Merchandisers
Suggested Mounting Locations
in Single Deck Glass Front
Impact Merchandisers
Flexible Plastic Fits in Price Tag Moldings
— Acrylic Package Guard, Facing Out
Page 24
4-6 START UP / OPERATION
P/N 0378414G
Excerpt from ANSI / NSF-7:
5.30 Temperature indicating devices
5.30.1 Each refrigerated storage compartment and cabinet
shall have at least one securely mounted temperature indicat­ing device that clearly displays the air temperature in the compartment. Atemperature indicating device shall not be required in beverage coolers or units intended solely for the storage and/or display of ice cream and other frozen deserts.
5.30.2 The temperature display of a temperature indicating device shall be visible immediately upon opening a door to the refrigerated compartment or shall be visible from the equipment exterior without opening a door to the compart­ment. The sensing element of the device shall be easily cleanable and located to reflect the temperature in the warmest part of the food storage compartment.
Open display refrigerators shall have a temperature indicating device that is easily cleanable and located to reflect the warmest part of the food storage compartment. Open display refrigerators shall include a thermometer and installation instructions for installing the thermometer in the warmest part of the food storage compartment, as determined by the manufacturer.
Excerpt from 1999 FDA Food Code:
4-204.112 Temperature Measuring Devices.
(A) In a mechanically refrigerated or hot sensor of a measure the air temperature in the warmest part of a mechan­ically refrigerated unit and in the coolest part of a hot storage unit.
(B) Except as specified in ¶(C) of this section, cold or hot holding be designed to include and shall be equipped with at least one integral or permanently affixed
DEVICE
temperature display.
(C) Paragraph (B) of this section does not apply to for which the placement of a TEMPERATURE MEASURING DEVICE is not a practical means for measuring the ambient air surround­ing the
EQUIPMENT, such as calrod units, heat lamps, cold plates,
bainmaries, steam tables, insulated and salad bars.
TEMPERATURE MEASURING DEVICE shall be located to
EQUIPMENT
that is located to allow easy viewing of the device’s
FOOD because of the design, type, and use of the
used for POTENTIALLY HAZARDOUS FOOD shall
FOOD storage unit, the
FOOD
TEMPERATURE MEASURING
EQUIPMENT
FOOD transport containers,
Important – Please read!
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 loca­tions 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.
Hussmann P/N 429971A 11/2000
Page 25
Medium Temperature
P/N 0378414G 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 Front Shelf Support and Return Air Grille

The front shelf support may be removed to facilitate cleaning. Simply lift a four foot section up and out as shown below.

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.
Do NOT Use:
•Abrasive cleansers and scouring pads, as these will mar the finish.
•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.

MAINTENANCE

Do NOT use HOT water on COLD glass
surfaces. This can cause the glass to shat-
ter 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.
Removable Front Shelf Supports
Removable Return Air Grilles
!
WARNING
!
WARNING
!
WARNING
Page 26
5-2 MAINTENANCE
P/N 0378414G
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.
NEVER 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 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.

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 (Windex, Solox or a weak solution of vinegar and water).
•Do NOT spray liquids on the mirrors. 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.
Page 27
Medium Temperature
P/N 0378414G 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.
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.
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 and to the right.
Damaged honeycomb must be replaced.
Honeycomb
Retainer
Screw
Retainer
Honeycomb
Page 28
5-4 MAINTENANCE
P/N 0378414G

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 or top rail.
2. Clean area.
3. Apply vinyl or car wax and polish surface for a smooth glossy finish.
Page 29
Medium Temperature
P/N 0378414G 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. 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 these fans:
1. Turn off power.
2. Remove bottom display pans.
3. Disconnect fan from wiring harness.
4. Remove fan blade.
5. Lift fan plenum and remove screws holding bottom of motor to fan basket.
6. Replace fan motor and blade.
7. Lower fan plenum.
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
Hook to Back Panel
Remove Screws
Page 30
6-2 SERVICE
P/N 0378414G

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 operates both the canopy and the shelf lamps. The rail lamp switch is located on the rail.

REPLACING LAMP HOLDERS AND END CAPS

The 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.
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.
Groove
Nub
Impact End-Cap
Impact Lamp Holder
Plastic Shield
End Cap
Fluorescent Lamp
Page 31
Medium Temperature
P/N 0378414G 6-3
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.

REPLACING ELECTRONIC BALLASTS

Rail Lamp Ballast

The rail lamp ballast is located in the raceway, behind the lower front panel at the left-hand end of the merchandiser. NOTE: The switch for the rail lamp is separate from the canopy and shelf lighting. The rail lamp switch is located on the rail.
To gain access:
1. DISCONNECT THE ELECTRICAL POWER TO THE
MERCHANDISER
.
2. Remove the lower front panel by lifting it up and out.
3. Remove screws attaching the raceway cover, then remove cover.
4. Service or replace ballast as required. Reassemble items as they were originally installed.
5. Reconnect the electrical power.
Canopy and Shelf Lamp Ballasts
These ballast are located at the top of the merchandiser inside the canopy. The switch in the canopy operates both the canopy and the shelf lamps. The rail lamp has a separate switch.
1. D
ISCONNECT POWER TO THE MERCHANDISER
.
2. Remove fluorescent lamps from the canopy.
3. Remove the screws that secure the lamp panel.
4. Grasping the light panel at the area where the top of the panel and the top of the merchandiser meet, pull back and down until the panel swings freely.
5. Replace ballast and reassemble parts in reverse order.
6. Reconnect the electrical power.
NOTE:
The ballast are in sequence from the left-hand end
of the merchandiser (facing front) as follows:
Farthest left, bottom shelf ballast, then center shelf
or shelves, top shelf, first row canopy and
last is second row canopy.
The rail lamp ballast is located in the raceway.
Canopy and Shelf Lamp Ballasts
Screw
Lower Front Panel
Ballast located inside raceway
Page 32
6-4 SERVICE
P/N 0378414G
REPLACING DAMAGED
DRAIN FITTING
The following procedure is for the field repair of a broken drain fitting.
1. Use a drill with a 2 in. (51 mm) hole saw to drill out the bottom of the drain fitting. Be sure to drill completely through fitting and
bottom liner.
2. Apply an ABS and PVC compatible primer­sealer to outside of PVC coupling and inside of drain. Insert coupling into drain fitting.
3. Install a PVC adapter on the drip trap. Apply primer-sealer to a stub piece of PVC pipe and insert between coupling and adapter.

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.
Drain Fitting
Viewed from Inside Merchandiser
Foam Bottom Assembly
Modified Drain Fitting
PVC Adapter
1
/2 x 1 1/4 in.
Stub Pipe
PVC Coupling slip fit, 2 in. OD (51mm)
1
/4 in. ID (32 mm)
1 (obtained at local
building supply store)
1 (38 x 32 mm)
(obtained at local building supply store)
Drip Trap
Page 33
®
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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