Hussmann MD, MD-10, MD-14 Installation & Operation Manual
2402646
SERIES MD’s
Medium Temperature
Merchandisers
PLEASE READ THIS MANUAL BEFORE USING THE PRODUCT
Installation &
Operation Manual
P/N 2402646A
MD-10, MD-14
Agust 2005
HUSSMANN - CORPORATION
1331 Seamist Drive
Houston TX 77008
Phone (713) 861-9171
2402646
TABLE OF CONTENTS PAGE
INTRODUCTION, INSPECTION, LOCATION and CLEARANCE
SKID, LEVELING and SEALING
DRAINS
SERIAL PLATE
AIR DISTRIBUTION and PRODUCT LOADING
POWER REQUIREMENTS
ELECTRICAL BOX, POWER SWITCH, TIME CLOCK
CONNECTIONS
SPECIFICATIONS, DIMENSIONS, BTU CAPACITY
SHELVING, TEMPERATURE CONTROL,
CONDENSING UNIT
THERMOMETER
LIGHTING, LAMP SWITCH, BALLAST
NIGHT COVER, CLEANING EXTERIOR
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3
3
3
3
3
4
4
4
4
5
5
5
5
CLEANING INTERIOR
REFRIGERATION
LEAK TESTING AND EVACUATION
TROUBLE SHOOTING CHARTS
LIGHTING TROUBLESHOOTING
5
6
6
7
8
REPLACEMENT PARTS INFORMATION 8
WARRANTY. 9
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2402646
INTRODUCTION, INSPECTION, LOCA TION and
CLEARANCE SKID, LEVELING and SEALING and
DRAINS
Hussmann MD model cabinets offer maximum
versatility in the display of medium temperature
prechillded products such as prepared salads,
pizzas, fresh entrees, and dairy products.
INSPECTION
-
Upon receipt of the cabinet, carefully inspect the
crating and equipment for damage. If damage is found,
note on the delivery receipt where and how extensive
the damage before signing.
After removal of the crating, again inspect
the cabinet
for damage. If damage is found, contact the delivering
carrier and request for an inspection and inspection
report be made for the purpose of filing a claim. Save
as much as the crating as possible and move the
cabinet as little as possible until after the inspection.
Once the cabinet has been installed and properly
leveled,
it
should be sealed to the floor as shown in the
following drawing, utilizing a NSF approved material
such as General Electric RTV -102 silicone sealant or
equivalent.
DRAINS
-
Remote draining is not required on self -contained
models. The condensate water from the evaporator
drains out through the bottom of the cabinet, through a
hose trap located to the underside of the condensing
unit area, into an electrically heated condensate pan.
Until the trap gets filled with water; there may be a small
frost accumulation in the evaporator coil area. This frost
should disappear after the trap gets filled with water;
usually after the first defrost. The drains for the
condensate water are located in the front corners of the
evaporator coil area. These drains must be kept clear to
ensure proper drainage of the condensate water.
THIS IS YOUR RESPONSABILITY
LOCATION and CLEARANCE
-
It is very important that careful consideration be given to
the cabinet location in the store where direct sunlight
would shine into the cabinet, and locations where drafts
from air conditioning, open doors, and fans would blow
directly into the cabinet should be avoided.
The MD cabinets have front air intake and rear air
discharge for proper airflow over the condensing unit. A
minimum distance of two feet must be left open in front
of the cabinet so that air intake to the condensing unit is
not obstructed.
In addition, a minimum of five inches clearance behind
the case and eighteen inches above the case is
required to allow for proper discharge air flowing over
the condensing unit.
SKID-
The shipping skid should be left on the cabinet until it is
near its selected location in the store. The skid provides
protection for both the cabinet and floor. The skid can be
removed by backing out the screws that are run through
the front and rear base rails into the skid. Once these
screws are removed, the cabinet may be slid carefully
off the skid.
LEVELING
-
The cabinet must be properly leveled to ensure full
drainage of the water produced during the off and
defrost cycles. Level the cabinet from front to rear and
end-to-end.
SEALING
-
SERIAL PLATE-
The serial plate is located on the interior left hand end. It
contains all pertinent information such as model, cabinet
serial number, refrigerant type and amount etc. The
information on this plate is very helpful when servicing or
ordering replacement parts. This plate should never be
altered or removed for any reason
AIR DISTRIBUTION and PRODUCT LOADING
This cabinet has a forced-air circulation system. Air flows
through the perforations in the back wall over the
product on the shelves, as well as out the baffles located
above the product, across the face of the product and
into the return air grill.
WHEN LOADING THE PRODUCT DO NOT
PLACE IT SO THAT IT EXTENDS OVER THE
SHELF EDGES OR OVER THE RETURN AIR
GRILL. IT IS ALSO IMPORTANT NOT TO
PLACE THE PRODUCT TIGHT AGAINST THE
BACK PANEL. THIS WILL RESTRICT AIR
FROM FLOWING OUT OF THE
PERFORATIONS AND OVER THE PRODUCT.
POWER REQUIREMENTS
-
The MD-10 and MD-14 Comes equipped with a 15A
power cord, Under no circumstances should the
grounding prong on the cords be removed.
It is very important for the safety of both you and your
customer to have each circuit properly grounded. A
qualified electrician should perform all wiring in
accordance with the National Electrical Code and/or all
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