Hussmann MWG, MWGE, PWI, PWIC, PWW Installation And Operation Manual
...
Medium Temperature
Meat, Delicatessen, Dairy and Produce
Merchandisers
Installation &
Operation Manual
Shipped With Case Data Sheets
P/N 0378414G
Impact Series
August 2004
IIMMPPOORRTTAANNTT
Keep in store for
future reference!
®
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 . . . . . . . . . . . . . . . . . . . 1-4
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
®
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
!
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
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
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
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
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
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
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
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