Hussmann SHM-4 Guide rapide

January 2006

HUSSMANN - GLOVERSVILLE

INSTALLATION & SERVICE

INSTRUCTIONS

FOR

SHM

Specialty Horizontal Merchandisers

P/N OII – SHM

January 2006

First Call for help (US and Canada):

1-800-922-1919

Soporte Tècnico y Asistencia (Mèxico):

01-800-522-1900

For a Service Network Locator and other

Information visit us at

www.hussmann.com

select Worldwide Locations

Page 2

TABLE OF CONTENTS

Page

Inspection 3

Location 3

Skid, Leveling, Drains, Legs 3 & 4

Cleaning Exterior, Interior 4

Cleaning Stainless Steel Surfaces 4

SerialPlate 5

Power Requirements 5

ElectricalBox 5

PowerSwitch 5

DefrostTimeClock 6

Temperature Control 7

CondensingUnit 8

Shelves 8

Thermometer 8

Refrigeration 9

Evaporator Fan Motors 9

Page 3

GENERAL, INSTALLATION, CARE and CLEANING

GENERAL –

The Hussmann Models SHM have

been carefully designed to offer versatility

in the display of food items such as pre-

made sandwiches, fresh fruit, and vegeta-

bles, cheeses, and deli items.

So that you can realize maximum

benefit from this fine piece of equipment

we urge both you and your installer to

carefully read and follow this brief set of

instructions prior to installation of the

equipment.

INSPECTION –

The equipment has been skidded

and crated prior to shipment from the fac-

tory. It is the carrier’s responsibility to de-

liver it to you in good condition until such

time as you sign for it. Upon receipt of the

cabinet, examine the packaging for dam-

age. If the packing is damaged, make spe-

cific notation on the delivery ticket as to the

location and extent of damage prior to sign-

ing for the piece.

Carefully remove packaging and

examine the cabinet for damage. If dam-

age is found, contact the delivering carrier

immediately and request that his agent pre-

pare an inspection report for the purpose

of filing a claim. THIS IS YOUR RE-

SPONSIBILITY NOT THE FACTORY’S.

Save all packaging materials and move the

cabinet as little as possible prior to inspec-

tion.

LOCATION –

Avoid locating the cabinet where di-

rect sunlight would shine into the fixture or

where drafts from air conditioning grills,

fans, and open doors could affect its opera-

tion. A minimum distance of two feet

should be allowed in the front of the case to

allow proper free air movement to and from

the condenser for maximum operating effi-

ciency.

SKID -

The skid should be left on the cabinet

until it is near its final location. The skid

provides protection for both case and floor.

The skid is removed by raising one end of

the case approx. 6”, block securely and re-

move the 2 skid bolts on the raised end and

screw back into the holes 2 leg levelers.

The procedure is repeated on the op-

posite end. When the leg levelers are in

place, the case may be slid off the skid and

placed in its final location.

LEVELING –

The cabinet must be leveled properly

to insure full drainage of condensate water

from the evaporator coil. Level the case

from front to rear and end to end. Optional

legs can be provided for this purpose.

DRAINS -

Remote draining is not required in

self-contained models. The condensate wa-

ter from the evaporator drains out

Page 4

through the bottom of the cabinet into the

condensing unit compartment to a heated

condensate pan.

The pan uses a thermistor to sense

the presence of water in the pan and ad-

justs the amount of heat required to evapo-

rate the water. Care should be taken to

insure the drain hose is properly trapped

and in the pan.

LEGS – (optional)

If required by Health Inspectors the

levelers can be removed and replaced with

NSF Approved legs to raise the case 6

inches for cleaning purposes. An optional

skirt kit can be provided to snap on the

legs.

CARE and CLEANING – EXTERIOR –

When cleaning the exterior of the

cabinet, use a soft cloth or sponges with wa-

ter and a mild detergent. Rinse and wipe

dry. Do not use an abrasive cleanser on the

painted surfaces as this will mar the finish.

For plexiglass surfaces, use an ap-

proved plexiglass cleaner such as Craftics

20/20 Plasti-Cleaner

To check the interior drain – SHUT

OFF POWER TO THE CABINET! This

may be accomplished by turning off the

cabinet power switch or by turning off the

breaker located in the store electrical

panel. Remove the product from the cabi-

net. Lift up and remove the stainless steel

shelves. The drain is located in the center

of the interior bottom directly behind the

evaporator coil. Remove any pricing

Labels, product wrappers, etc., that may be

found over the drain opening. When fin-

ished checking, assemble cabinet in reverse

order, turn back on the power and allow

cabinet to pull down to proper operating

temperatures before restocking.

INTERIOR –

For cleaning the interior of the prod-

uct compartment, remove the product, dis-

connect the electrical power, and allow cabi-

net to warm to room temperature.

Use a soft cloth or sponge with a mild

detergent to wash the interior. The drain-

age area and drain should be checked to in-

sure that they have not become clogged.

If the condensate drain hose is re-

moved from the electric condensate pan for

cleaning, it must be reinstalled prior to op-

erating the case. Do not use an abrasive

cleanser on the painted surfaces as this will

mar the surface.

Wipe dry before restarting the cabi-

net. The time clock (see Electrical section)

should be reset to the correct time of day.

Allow the cabinet to cool down to proper

temperature before reloading product.

CLEANING STAINLESS STEEL

Generally soap and water will be suf-

ficient for most cleanings when done often

and regularly.

Page 5

If either a high or low voltage condition ex-

ists, contact your electrician, local power

company, or equipment manufacturer.

ELECTRICAL BOX –

The electrical box is located behind

the louvered access panel. The box contains

the items described below. On remote units

the box is used to bring the field supply to.

There is a grounding lug provided on these

models for grounding purposes.

POWER SWITCH –

The main power switch is located be-

hind the louvered access panel covering the

condensing unit compartment on the cus-

tomer side of the case.

This switch controls all power to the

case.

When necessary several cleaning agents

can be used. Some of them are Comet, Bab-O,

Liquid NuSteel, Cooper’s Stainless Steel

Cleaner, Allen’s Stainless Steel Cleaner, etc.

SERIAL PLATE –

The serial plate is located on the inte-

rior left wall of the cabinet. It contains all per-

tinent information such as model, cabinet se-

rial number, amperage rating, refrigerant type

and charge. This information will be needed to

install, service, or order parts for this piece of

equipment.

POWER REQUIREMENTS –

The SHM –3, 4, 5 & 6 use a 115/60/1

power source, with the SHM-3 and –4 models

using a 15 amp cord and the SHM-5 and –6

using a 20 amp cord. The SHM-8 requires

208/230-60/1 power and uses a 20 amp plug. It

is very important for the safety of you and

your customers to have each circuit grounded

properly.

A qualified electrician should perform

all wiring in accordance with the National

Electrical Code and/or all local codes

Separate circuits are recommended for

each case in order to prevent product loss due

to overloading or malfunction of other equip-

ment on the same circuit. Fuses or circuit

breakers should be supplied for each circuit.

For proper operation of equipment, voltage as

measured at the compressor must not vary

more than 5% from the cabinet serial plate

rating.

Temprature Control

Power Switch

Timer

Page 6

The cabinet power switch must be in the

OFF position before starting any cleaning or

service work on the equipment.

DEFROST TIME CLOCK –

The time clock, located in the electri-

cal box, provides a definite off-time so that

the evaporator will clear itself of frost.

The clock is provided with pins to

initiate defrost. The failsafe setting sets the

length of defrost (from 2 minutes minimum

to 110 maximum).

The clock is factory preset for 1 de-

frost per day at 40 minutes, which should be

sufficient for most applications.

Additional defrost may be required

for cases located in high humidity or high

usage cases. If possible, avoid setting a de-

frost during the day or peak usage periods.

The clock time pointer should be set to the

correct time of day when the cabinet is

ready to be started.

SETTING THE TIMER – Extra pins

are provided with the timer.

a. Put pin in the hole in dial face for the

time you wish cabinet to defrost. Note

that there is an AM and PM section on

the dial face. Be sure the pin is tight.

b. Set the length of time for the defrost

(failsafe). Push down on the adjustment

and slide it to the length of time. (Do not

set the time longer than 60 minutes.

c. Set the time pointer to the proper time of

day and start cabinet.

Page 7

START UP AND OPERATION –

It is important that the four previous

sections of this installation booklet have

been read and followed carefully before at-

tempting to start up the equipment.

A thorough inspection should be

made prior to start up to assure that there

are no loose nuts, bolts, electrical connec-

tions or refrigeration lines rubbing or chaf-

ing.

Turn the power switch to the ON po-

sition. Allow the system to reach normal

operating temperature prior to loading any

product in it.

This cabinet has a forced-air curtain that

flows over the top of the product. See

Shelves under this section for special load-

ing instructions.

Air flows out of the honeycomb dif-

fuser located above the product, across the

product, and into the return duct. The hon-

eycomb can be removed for cleaning.

TEMPERATURE CONTROL –

Interior cabinet temperatures are

controlled through the use of a bulb and

capillary type temperature control.

The body portion of the control is

located in the electrical enclosure. Access

to the enclosure is gained by removing the

louvered panel on the front of the cabinet.

If you have a BW version of the SHM, the

electrical enclosure is located behind the

louvered panel on the rear of the cabinet.

The sensing element of the control is lo-

cated on top of the evaporator coil fins of

the left end of the evaporator.

PRIOR TO PERFORMING ANY

SERVICE OR CONTROL REPLACE-

MENT, DISCONNECT THE POWER TO

THE CABINET.

The dial face of the control is adjust-

able from –10 to +50º. The control is fac-

tory pre-set at between 26 and 28ºto main-

tain interior cabinet temperatures of 35 to

40º. The control also has an adjustable dif-

ferential that determines the cut-in and the

cut-out temperature. This is adjustable

from 5 to 20º. The factory setting is 9º to

insure proper off time to keep the evapora-

tor from icing.

When replacing the control, make

sure to reseal the penetration in the cabinet

bottom to prevent moisture from leaking

through.

A picture of this control is on the

next page.

LOADLINE

Page 8

CONDENSING UNIT –

A regular program should be set up

for cleaning the fin-and-tube condenser.

Dust and dirt accumulation can cause seri-

ous efficiency loss.

Access is gained to the unit area by

removing the louvered grille. Before at-

tempting to slide out condensing unit you

must first remove the screws holding the

condenser baffles with a phillips screw

driver.

The unit slides forward to facilitate clean-

ing and for service. Care should be taken

when pushing the unit back in to insure

that the pullout coil does not become

kinked or damaged in some way. Double

check to make sure the drain hose is in the

drain pan before putting the access grille

back on. The rear access panel is also re-

movable if it is necessary to work at the

back of the case.

SHELVES –

The cabinet is equipped with shelves

for the display of your product. THERE IS

A 'LOAD LINE' LABEL ON THE BACK

WALL OF THE INNER LINER.

NOT

LOAD ABOVE THIS LINE AS

THE PRODUCT WILL BE IN THE DIS-

CHARGE AIR FLOW AND ADVERSELY

AFFECT THE CABINETS PERFORM-

ANCE

THERMOMETER –

A thermometer is provided that has

both Fahrenheit and Centigrade. The ther-

mometer is located in the back interior cor-

ner.

Its reading will be 5º to 7ºF warmer

than the discharge air off the honeycomb.

A solar powered thermometer is

provided with each cabinet. Temperature

display in Fahrenheit degrees is standard.

Celsius display is available as an option.

The thermometer is located in the cabinet

interior in the top left hand rear corner.

Differential

Penn A19-AHA-2D

To replace the thermometer, remove the two screws holding the thermometer to its

mounting bracket. Remove the sensing element from its clip. Install the

replacement thermometer in reverse order.

To clean the sensing element of the thermometer, follow replacement

procedure. Clean the element with a water and mild detergent solution. Make sure

the sensing element is wiped clean of any residue to ensure proper temperature

readings

REFRIGERATION –

The SHM 3, 4, 6 models use a R-134a refrigerant and the SHM-5 and –8

models use R-404A refrigerant. All models use a hermetic compressor.

The systems employ capillary tubes for refrigerant flow control. The

capillary tube is soldered to the suction line pull-out coil for proper heat exchange.

If the capillary should be come plugged or damaged for some reason IT IS BEST

TO REPLACE THE WHOLE HEAT EXCHANGER WITH A NEW ONE.

Consult the factory for the proper replacement.

Listed below are BTU requirements for the SHM series cabinets at a +20º F

evaporator and 110º F condenser temperature.

SHM-3 2900

SHM-4 3000

SHM-5 4400

SHM-6 5400

SHM-8 6400

The following pressures are optimum when the case is in a 75º to 80ºF ambient and

is running from 35º to 40ºF cabinet temperature and are for reference only:

SHM-3,4,6 SHM-5 –8

Head Pressure 110-120 psig Head Pressure 280-290 psig

Suction Pressure 15-20 psig Suction Pressure 36-40 psig

Consult the serial plate for the correct refrigerant charge. This charge is critical

and should be weighed in.

EVAPORATOR FAN MOTORS –

To replace an evaporator fan motor, the product must be removed from the

cabinet and the step shelves also removed. The shelves are only set in place.

Next, remove the plate covering the fans by removing the two screws holding

this in place. The fans are now accessible.

Page 9

WARRANTY

–

Please read carefully to assure prompt and

accurate service

Ordering Replacement Parts –

•

Contact your nearest

Hussmann Distributor.

•

Always specify model and serial number of cabinet.

•

If correct part number is not known, give a

clear description of part itself and its

function in the cabinet or remote unit.

Warranty Parts Procedure –

•

Same as items above

•

Give original installation date of cabinet and, if possible, forward a copy of the origi-

nal invoice or delivery receipt.

•

All shipments of in-warranty replacement parts

will be invoiced

from the factory un-

til such time as the defective part is returned and proved to be defective by our Qual-

ity Control Department.

•

Contact your Hussmann Distributor for instructions on returning in-warranty parts.

•

Warranty parts must be returned to the factory

within 30 days of date of failure to

assure proper disposition.

•

Lack of any of the above information may

result in the shipment of the wrong part,

or a delay in shipment.

Compressor Replacement Procedure –

•

Replacement compressors will not be shipped from the Hussmann factory. They

may be obtained from your nearest Copeland Wholesaler.

•

Your wholesaler will replace,

free

charge, any compressor found to be defective

within twelve months of installation, not to exceed twenty months from the date of

manufacture, as determined by the compressor serial number on the compressor se-

rial plate.

Page 10

•

For any defective compressor beyond the twelve or twenty month time period, a sal-

vage value credit

will

be given too partially

offset the invoice for the replacement.

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