January 2006
Specialty Horizontal Merchandisers
INSTALLATION & SERVICE
INSTRUCTIONS
FOR
SHM
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
HUSSMANN - GLOVERSVILLE
P/N OII – SHM
January 2006
TABLE OF CONTENTS
Page
Inspection 3
Location 3
Skid, Leveling, Drains, Legs 3 & 4
Cleaning Exterior, Interior 4
Cleaning Stainless Steel Surfaces 4
Serial Plate 5
Power Requirements 5
Electrical Box 5
Power Switch 5
Defrost Time Clock 6
Temperature Control 7
Condensing Unit 8
Shelves 8
Thermometer 8
Refrigeration 9
Evaporator Fan Motors 9
Page 2
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 premade sandwiches, fresh fruit, and vegetables, 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 factory. It is the carrier’s responsibility to deliver it to you in good condition until such
time as you sign for it. Upon receipt of the
cabinet, examine the packaging for damage. If the packing is damaged, make specific notation on the delivery ticket as to the
location and extent of damage prior to signing for the piece.
Carefully remove packaging and
examine the cabinet for damage. If damage is found, contact the delivering carrier
immediately and request that his agent prepare an inspection report for the purpose
of filing a claim. THIS IS YOUR RESPONSIBILITY NOT THE FACTORY’S.
Save all packaging materials and move the
cabinet as little as possible prior to inspection.
LOCATION –
Avoid locating the cabinet where direct sunlight would shine into the fixture or
where drafts from air conditioning grills,
fans, and open doors could affect its operation. 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 efficiency.
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 remove the 2 skid bolts on the raised end and
screw back into the holes 2 leg levelers.
The procedure is repeated on the opposite 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 water from the evaporator drains out
Page 3
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 adjusts the amount of heat required to evaporate 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 water 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 approved 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 cabinet. 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 finished 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 product compartment, remove the product, disconnect the electrical power, and allow cabinet to warm to room temperature.
Use a soft cloth or sponge with a mild
detergent to wash the interior. The drainage area and drain should be checked to insure that they have not become clogged.
If the condensate drain hose is removed from the electric condensate pan for
cleaning, it must be reinstalled prior to operating the case. Do not use an abrasive
cleanser on the painted surfaces as this will
mar the surface.
Wipe dry before restarting the cabinet. 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 sufficient for most cleanings when done often
and regularly.
Page 4
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 interior left wall of the cabinet. It contains all pertinent information such as model, cabinet serial 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 equipment 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.
If either a high or low voltage condition exists, 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 behind the louvered access panel covering the
condensing unit compartment on the customer side of the case.
This switch controls all power to the
case.
Temprature Control
Timer
Page 5
Power Switch
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 electrical 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 defrost 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 defrost 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 6
START UP AND OPERATION –
It is important that the four previous
sections of this installation booklet have
been read and followed carefully before attempting 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 connections or refrigeration lines rubbing or chafing.
Turn the power switch to the ON position. 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 loading instructions.
Air flows out of the honeycomb diffuser located above the product, across the
product, and into the return duct. The honeycomb can be removed for cleaning.
E
N
I
L
D
A
LO
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 located on top of the evaporator coil fins of
the left end of the evaporator.
PRIOR TO PERFORMING ANY
SERVICE OR CONTROL REPLACEMENT, DISCONNECT THE POWER TO
THE CABINET.
The dial face of the control is adjustable from –10 to +50º. The control is factory pre-set at between 26 and 28ºto maintain interior cabinet temperatures of 35 to
40º. The control also has an adjustable differential 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 evaporator 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.
Page 7
CONDENSING UNIT –
A regular program should be set up
for cleaning the fin-and-tube condenser.
Dust and dirt accumulation can cause serious efficiency loss.
Access is gained to the unit area by
removing the louvered grille. Before attempting to slide out condensing unit you
must first remove the screws holding the
condenser baffles with a phillips screw
driver.
Penn A19-AHA-2D
Differential
The unit slides forward to facilitate cleaning 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 removable 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
THE PRODUCT WILL BE IN THE DISCHARGE AIR FLOW AND ADVERSELY
AFFECT THE CABINETS PERFORMANCE
.
THERMOMETER –
A thermometer is provided that has
both Fahrenheit and Centigrade. The thermometer is located in the back interior corner.
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.
.
LOAD ABOVE THIS LINE AS
DO
Page 8
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 ret urne d an d proved to be defective by our Qu al -
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
of
charge, any compressor found to be defective
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.
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 serial plate.
EVAP. FAN
EVAP. FAN
EVAP. FAN
WIRE HARNESS
3 4
1 2
3-S-226
TIME CLOCK
T
2N
4
BLK
5 6
1
3
9 10
7 8
TEMP. CONTROL
X
RED
WHT
11 12
23 24
25 26
ELEC-TRO N
WHT
BLK
PROTECTOR
#1 RELAY
BLK
COMPRESSOR
C
2
1
COND.
FAN
GRD
115 V
60 Hz
1 Ph
POWER CORD
GRN
REV.
BLK
XX/XX/XX
DATE
BLK
S1
POWER SWITCH
WHT
XXX
BY
CONDENSATE PAN
S3
NOTE: USE COPPER,COPPER CLAD ALUMINUM
OR ALUMINUM CONDUCTORS ONLY.
XXXX
E.C.N.
MATERIAL:
XXXXXX-XX
SIZE
XXXXXXXXXX
DIE NO.
XXXX-XXXX
SHEET
SIZE
B
TOLERANCES UNLESS
OTHERWISE SPECIFIED.
FRACTIONAL
ANGULAR
HOLE LOCATION
& SPACING
SCALE:
FINISH
1/32"
0.031"DECIMAL
1ü
1/64"
XXXXXXXXXX
Gloversville, N.Y. 12078
TITLE
WIRING DIAGRAM, SHM-5, SHM-6
DRAWN
TYPE
CODE
X
DATE
CHECKED
JLS
08/03/94
XXX
DWG. NUMBER
M100-1937
R
REV.
X
EVAP. FAN
WIRE HARNESS
TIME CLOCK
T
EVAP. FAN
EVAP. FAN
2N
3-S-226
3 4
1 2
1
TEMP. CONTROL
4
BLK
X
3
RED
WHT
WHT
#1 RELAY
BLK
COMPRESSOR
C
1
2
PROTECTOR
COND.
FAN
5 6
7 8
11 12
25 26
23 24
9 10
ELEC-TRON
BLK
GRD
CONDENSATE PAN
BLK
115 V
60 Hz
1 Ph
POWER CORD
GRN
BLK
S1
POWER SWITCH
WHT
S3
NOTE: USE COPPER,COPPER CLAD ALUMINUM
OR ALUMINUM CONDUCTORS ONLY.
REV EO # REV DATE REV BY
APPROVED BY
-
-
-
-
-
-
--
-
TOLERANCES UNLESS OTHERWISE SPECIFIED: FRACTIONAL 1/32"
DECIMAL 0.031" ANGULAR 1° HOLE LOCATION & SPACING 1/64"
EO NUMBER
DRAWN BY:
DATE DRAWN :
APPROVED BY:
-
JLS
SCALE
INCHES
SHEET #
8/3/1994
-
1 OF 1
GLOVERSVILLE, NY 12078
WIRING DIAGRAM SHM-3,4
M100-1871
WIRE HARNESS
TIME CLOCK
T
EVAP. FAN
EVAP. FAN
EVAP. FAN
2N
3-S-226
3 4
1 2
WHT
1
4
BLK
5 6
3
X
RED
WHT
WHT
11 12
7 8
9 10
23 24
25 26
ELEC-TRON
TEMP. CONTROL
HIGH PRESSURE
SWITCH
PROTECTOR
COMPRESSOR
C
S
S
1
R
R
2
BLK
CONDENSER
FAN
GRD
115 V
60 Hz
1 Ph
POWER CORD
BLK
GRN
BLK
S1
POWER SWITCH
WHT
CONDENSATE PAN
NOTE: USE COPPER,COPPER CLAD ALUMINUM
S3
OR ALUMINUM CONDUCTORS ONLY.
REV EO # REV DATE REV BY
-
APPROVED BY
-
-
-
-
-
--
-
TOLERANCES UNLESS OTHERWISE SPECIFIED: FRACTIONAL 1/32"
DECIMAL 0.031" ANGULAR 1° HOLE LOCATION & SPACING 1/64"
EO NUMBER
DRAWN BY:
DATE DRAWN :
APPROVED BY:
-
JHB
SCALE
INCHES
SHEET #
-
7/13/2000
1 OF 1
SHM-3
R-404A
GLOVERSVILLE, NY 12078
WIRING DIAGRAM
M100-2197
EVAP. FAN
EVAP. FAN
WIRE HARNESS
2
TIME CLOCK
BLK
N
T
1
34X
RED
RED
TEMP. CONTROL
RED
BLK
COMPRESSOR ELEC.
BOX
TERMINALS
C
1
2
EVAP. FAN
EVAP. FAN
EVAP. FAN
208/230V 60
Hz
1 Ph
20 AMP 250V
POWER CORD
NOTE: USE COPPER,COPPER CLAD ALUMINUM,
OR ALUMINUM CONDUCTORS ONLY.
3-S-226
PLUG END
DETAIL
COND.
FAN
1 2
3 4
5 6
7 8
9 10
11 12
23 24
25 26
ELEC-TRON
COND. FAN IN
FRONT OF
COMPRESSOR
BLK
GRD
RED
CONDENSATE PAN
BLK
BLK
S1 S3
GRN
WHT
S2 S4
POWER SWITCH
REV EO # REV DATE REV BY
-
APPROVED BY
-
-
-
-
-
-
TOLERANCES UNLESS OTHERWISE SPECIFIED: FRACTIONAL 1/32"
DECIMAL 0.031" ANGULAR 1° HOLE LOCATION & SPACING 1/64"
--
EO NUMBER
DATE DRAWN
DRAWN BY
APPROVED BY
-
2/19/98
JHB
-
UNIT
SHEET #
SHM-8
GLOVERSVILLE, NY 12078
SHM-8 WIRING DIAGRAM
INCHES
1 OF 1
M100-2133
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