Hussmann CW2U-138GE Bedienungsanleitung

Shop Around

Medium Temperature

Dairy, Delicatessen and Produce

Merchandisers

Installation &

Operation Manual

Shipped With Case Data Sheets

P/N 428668A.

Impact Series

August, 2001

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Merchandisers

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 . . . . . . . . . . . . . . . . . . 1-3
Install Splashguard Brackets . . . . . . . . . . . . 1-4
Offsetting Bumpers and Top Rail . . . . . . . . 1-5
Installing Partitions . . . . . . . . . . . . . . . . . . . 1-6
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 . . . . . . . . . . . . . . . . 3-3
Sealing Splashguard to Floor . . . . . . . . . . . 3-4
START UP / OPERATION
Start Up . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Load Limits . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Stocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Load Limit Profile . . . . . . . . . . . . . . . . . . . 4-2
Shelf Alignment . . . . . . . . . . . . . . . . . . . . . 4-2
Multideck Shelf Configuration . . . . . . . . . . 4-2
Installing Lighted Shelves . . . . . . . . . . . . . . 4-2
Installing FDA/NSF Required Thermometer 4-4
MAINTENANCE
Care and Cleaning . . . . . . . . . . . . . . . . . . . 5-1
Cleaning Mirrors . . . . . . . . . . . . . . . . . . . . 5-2
Cleaning Honeycomb Assemblies . . . . . . . . 5-3
Removing Interior Back Panels . . . . . . . . . . 5-3
Cleaning Under Merchandiser . . . . . . . . . . 5-4
Removing Scratches from Bumper . . . . . . . 5-4
SERVICE
Replacing Fan Motors and Blades . . . . . . . . 6-1
Replacing Fluorescent Lamps . . . . . . . . . . . 6-3
Replacing Lamp Holder and End Cap . . . . . 6-3
Replacing Electronic Ballasts . . . . . . . . . . . 6-4
Replacing Damaged Drain Fitting . . . . . . . . 6-5
Repairing Aluminum Coils . . . . . . . . . . . . . 6-6
WARRANTY
REVISION A
1. Added Caution box, page 2-4.
2. Revised lighted shelf installation, pages 4-2 through 
4-4.
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards.
This merchandiser conforms to the
Commercial Refrigerator Manufacturers Association
Health and Sanitation Standard
CRS-S1-96.
12999 St. Charles Rock Road • Bridgeton, MO 63044 U.S.A. • (314) 291-2000 • FAX (314) 298-4767
TABLE OF CONTENTS
P/N 428668A
®

Medium Temperature

P/N 428668A 1-1

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Print d in 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 tempera-

ture 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 sun-

light, 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 merchan-

disers 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

1-2 INSTALLATION

P/N 428668A

EXTERIOR LOADING

Do NOT walk on top of merchandisers or

damage to the merchandisers and serious personal

injury could occur. THEY 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.

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 merchan-

disers at the same time using one shim.

NOTES:

•BEGIN LINEUP LEVELING FROM THE HIGHEST POINT OF

THE STORE FLOOR.

•If shimming two corners, check to see if a shim is

needed in the center of the 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.

WARNING

Rear

Levels

Front of Merchandiser

Serial Plate

NOTE: Do not place levels

on Display Pans or

on Shelves.

Medium Temperature

P/N 428668A 1-3

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Print d in U.S.A.)

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. Insert donut gasket into the end frame

horizontal recess across the bottom and up the

front of one merchandiser as shown.

2. Apply the 1/2in. (13 mm) gasket around the

perimeter 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 mer-

chandisers 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.

1/2 x1/2in. Gasket

Donut Gasket

CW2G and

CW2XG

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.

1-4 INSTALLATION

P/N 428668A

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.

INSTALL SPLASHGUARD BRACKETS

The splashguard and brackets are shipped inside

each case.

Install splashguard brackets before piping case.

Use two screws per bracket. Attach brackets every

4 feet at pre-drilled locations.

Install splashguard brackets on faceted end in

locations shown.

After merchandisers have been leveled and joined,

and all drip piping, electrical and refrigeration

work has been completed, install the splashguards

as described in Section 3.

Butyl Tape

Splashguard

Bracket

Splashguard

(for reference)

Front of CW2U-138

Two

screws

per

bracket Bracket

at 4 ft

interval

Medium Temperature

P/N 428668A 1-5

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Print d in U.S.A.)

Optional flat end: The flat end splashguard retain-

er is installed last, as shown.

OFFSETTING BUMPERS AND TOP RAIL

Offsetting the bumpers and top rails helps to

disguise the joint locations, giving the lineup a

smoother look.

1. Do not remove factory-installed faceted

bumpers or top rails on the CW2 family. Do

not expose bumpers or top rails to excessive

heat or direct sun as this may cause distortion

of the material.

2. Remove full-length 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 lift-

ing the top edge with the other hand. A flat

screwdriver may be used carefully as a pry.

(Refer to preceding drawing.)

b. Starting at one end, carefully peel bottom

of top rail free of the retainer and set the

rail inside the case.

c. Remove bumpers by pulling bumper away

from bumper retainers.

There are no starter bumpers in the CW2 family.

Full-length bumpers and top rails are installed

without internal trim or fasteners.

3. Starting at the left end of the line up, install the

first full-length bumper by pushing it into

place, touching the faceted bumper. Make sure

that no gaps exist between sections. Continue

installing the 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. Return to the left end of the line up and posi-

tion the top rail as shown on next page.

5. Push the bottom portion of the top rail section

into the retainer. 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 as shown.

Optional Flat End

Splash-guard Attachment

Attach retainer

before attaching end

1-6 INSTALLATION

P/N 428668A

6. Continue installing the top rails the length of

the line up. Do NOT install last section at this

time.

7. Once all except the last sections of the bumper

and top rail have been installed refrigerate the

case line up for at least six (6) hours. The last

sections of 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.

8. Go to the right end of the line up and tap the

top rail and bumpers to close any gaps.

9. Measure and cut last sections of top rail and

bumpers. Use a miter box and fine-tooth 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

Step 5. Trying to re-install only the popped part

may not secure the top rail, and may damage the

top rail, color panel and light channel.

10. Slide alignment strips between front glass

sections at each joint.

CW2 End Case Only

Install the base plate as shown below when joining

a CW2 end case to the lineup.

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 11/2in. (38 mm) parti-

tion kit is required. Instructions for installing the

partitions are included with the kit.

Miter Box

Bumper

Joint Base Plate

End Case

Medium Temperature

P/N 428668A 2-1

HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 (Print d in U.S.A.)

REFRIGERANT

The correct type of refrigerant will be stamped

on each merchandiser’s serial plate. The case

refrigeration piping is pressurized, leak tested

and factory sealed. Before making refrigera-

tion 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 right-

hand 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 merchandis-

er 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 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 pip-

ing of Hussmann Equipment.

Oil Traps

P-traps (oil traps) must be

installed at the base of all

suction line vertical risers.

REFRIGERATION / ELECTRICAL

Refrigeration lines are under pressure and

should be depressurized before attempting

to make any connections.

WARNING

Pan

Piping Locations

Fan

Plenum

Fan

Plenum

Pan

Front Rear

Pod

Piping Locations

2-2 REFRIGERATION / ELECTRICAL

P/N 428668A

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.

INSULATION

The suction and liquid lines should be clamped or

taped together and insulated for a minimum of

30 feet from the merchandiser. Additional insula-

tion 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 evapo-

rator take-off.

(Minimum 3 in.

(76 mm) loop.)

Suction Line Return

Minimum Loop

3-in. (76 mm)

Liquid Line Take Off

Offtime Defrost

Liquid Line

Suction Line

8 Ft Case

(2438 mm) 12 Ft Case

(3658 mm) 8 Ft Case

(2438 mm) 12 Ft Case

(3658 mm)

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