Hussmann F-6 Service Manual
F-6 Multi-deck Frozen Food
Wall Merchandisers
IMPORTANT
Keep in store for
future reference!
Installation &
Service Manual
Shipped With Case Data Sheets
P/N 0518253_B
October 2013
English P/N 0518253
Spanish P/N 0538811
French P/N 0538812
INSTALLATION
NSF Certification . . . . . . . . . . . . . . . . . . . 1-1
Location . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Shipping Damage . . . . . . . . . . . . . . . . . . . 1-1
Shipping Braces . . . . . . . . . . . . . . . . . . . . . 1-2
Exterior Loading . . . . . . . . . . . . . . . . . . . . 1-2
Merchandisers Shipped
With End Installed . . . . . . . . . . . . . . . . . 1-2
Anchoring . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Joining Instructions . . . . . . . . . . . . . . . . . . 1-3
Offsetting Bumpers and Top Rails . . . . . . 1-3
Splashguard Bracket and Joint Support . 1-6
REFRIGERATION / ELECTRICAL
Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Refrigerant Piping . . . . . . . . . . . . . . . . . . . 2-1
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Refrigeration Thermostat . . . . . . . . . . . . . 2-2
Defrost Termination Thermostat . . . . . . . 2-2
Expansion Valve Adjustment . . . . . . . . . 2-2
CDA Sensor (Optional) . . . . . . . . . . . . . . 2-2
Merchandiser Electrical Data . . . . . . . . . 2-3
Field Wiring . . . . . . . . . . . . . . . . . . . . . . . 2-3
Electrical Connections . . . . . . . . . . . . . . . 2-3
Identification of Wiring . . . . . . . . . . . . . . 2-3
Wiring Color Code . . . . . . . . . . . . . . . . . . 2-3
DRIP PIPING AND SPLASHGUARDS
Waste Outlet and Water Seal . . . . . . . . . . 3-1
Installing Drip Piping . . . . . . . . . . . . . . . . 3-1
Installing Splashguards . . . . . . . . . . . . . . 3-2
Sealing Splashguard to Floor . . . . . . . . . . 3-3
START UP / OPERATION
Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Ambient Air Filters . . . . . . . . . . . . . . . . . 4-1
Stocking . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Shelf Size and Location . . . . . . . . . . . . . . 4-2
Standard Shelves . . . . . . . . . . . . . . . . . . 4-2
Mezzanine Shelf . . . . . . . . . . . . . . . . . . 4-2
Bottom Rack . . . . . . . . . . . . . . . . . . . . . 4-3
Shelf Maximum Weight Limits . . . . . . . . 4-3
Load Limits . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Load Limit Profiles . . . . . . . . . . . . . . . . . . 4-4
Installing FDA/NSF Required
Thermometer . . . . . . . . . . . . . . . . . . . . 4-4
MAINTENANCE
Care and Cleaning . . . . . . . . . . . . . . . . . . . 5-1
Cleaning Ambient Air Filter . . . . . . . . . . 5-2
Cleaning Honeycomb Assemblies . . . . . . 5-2
Removing Pans and Interior Panels . . . . . 5-4
Cleaning Stainless Steel rails . . . . . . . . . . 5-5
Cleaning Coils . . . . . . . . . . . . . . . . . . . . . 5-5
Maintaining Fluorescent Lamps . . . . . . . 5-5
Cleaning Under Merchandisers . . . . . . . . 5-6
Removing Scratches from Bumper . . . . . . 5-6
Table of Contents continued on the next page...
P/N 0518253_B iii
TABLE OF CONTENTS
IMPORTANT
KEEP IN STORE FOR FUTURE REFERENCE
Quality that sets industry standards!
12999 St. Charles Rock Road • Bridgeton, MO 63044-2483
U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-8900
www.hussmann.com
© 2013 Hussmann Corporation
®
SERVICE
General . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Replacing Fan Motors and Blades . . . . . . 6-1
Evaporator Fans . . . . . . . . . . . . . . . . . . 6-2
Non-refrigerated Fans . . . . . . . . . . . . . . 6-3
Ambient Air Muffin Fans . . . . . . . . . . . 6-4
Replacing Modular Electric
Defrost Heater . . . . . . . . . . . . . . . . . . . . . 6-5
Replacing Electric Defrost Heater . . . . . . 6-6
Replacing Return Air Heater . . . . . . . . . . 6-7
Replacing Main Anti-Sweat
(Honeycomb Divider) Heater . . . . . . . . . 6-8
Replacing Optional Handrail
Anti-Sweat Heater . . . . . . . . . . . . . . . . . . 6-9
Replacing Fluorescent Lamps . . . . . . . . 6-10
Replacing Lamp Holders and End Caps 6-10
Replacing Electronic Ballasts . . . . . . . . . 6-11
Replacing Damaged Drain Fitting . . . . . 6-11
Repairing Aluminum Coil . . . . . . . . . . . . 6-12
WARRANTY
REVISION HISTORY
REVISION B — October 2013
1. Added warning box, page 1-1.
2. Added Maintaining Fluorescent Lamps,
page 5-5.
3. Added Cleaning Coils, page 5-5
3. Revised Replacing Fluorescent Lamps,
page 6-9.
REVISION A — November 2010
Original Issue
Table of Contents (Continued)
* * * * * * * * * * * * * * * * * * * * * * * * * *
ANSI Z535.5 DEFINITIONS
• DANGER – Indicate[s] a hazardous
situation which, if not avoided, will
result in death or serious injury.
• WARNING – Indicate[s] a hazardous
situation which, if not avoided, could
result in death or serious injury.
• CAUTION – Indicate[s] a hazardous
situation which, if not avoided, could
result in minor or moderate injury.
• NOTICE – Not related to personal injury –
Indicates[s] situations, which if not avoided,
could result in damage to equipment.
iv
P/N 0518253 _B U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
!
!
!
Low Temperature
Multi-deck Frozen Food
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
P/N 0518253_B 1-1
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.
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
Exercise caution at all times when moving
merchandisers with “L” shaped riders.
They are top heavy and should
NEVER be left in the vertical position.
Do NOT walk on or store
flammable materials atop the unit.
WARNING
P/N 0518253_B U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
1-2 INSTALLATION
SHIPPING BRACES
Move the merchandiser as close as possible
to its permanent location and then remove
all pack aging. Check for damage before
discarding packaging. Remove all separately
packed accessories such as kits and shelves.
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. T
HEREFORE, BE
SURE TO REPLACE THESE BOLTS WITH THE
SHORTER BOLTS PROVIDED
.
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.
ANCHORING
Because of the merchandisers' forward projection, they must be anchored to the floor to
prevent them from tipping forward. Each
merchandiser should be lagged to the floor
through its rear skid. Anchors should be
placed approximately 8 to 12 in. (203 mm to
305 mm) from each end and in the center of
the rear skid. Some merchandisers have holes
in the rear skid for this purpose.
Once the merchandisers are properly anchored,
remove shipping braces.
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 12 in. (305 mm) long and 3 in.
(76 mm) wide so that you can level adjoining
merchandisers at the same time using one
shim.
Do NOT remove shipping braces until the
merchandisers are properly anchored to the
floor. Merchandisers are top heavy and
could tip over causing serious injury.
Merchandisers must be braced before
removing the lag bolts.
WARNING
Use Levels Here
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
merchan diser and the floor, a shim should be
placed in the center .
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. To join like fixtures, a
joint kit is required. To join unlike fixtures, or
fixtures of different temperature applications, an
insulated partition kit is required. Joint and
partition kits are shipped separately; instructions
are included with each kit.
ALL JOINTS MUST BE AIR-TIGHT TO PREVENT
FORMATION OF ICE OR CONDENSATION
.
Refer to separate Joint Instruction shipped with
case.
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 short 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
following drawing.
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.
Low Temperature
Multi-deck Frozen Food
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
P/N 0518253_B 1-3
Push
Push
Lift
Pull
Pull
Upper
Bumper
Internal
Joint Trim
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. Start at the right end of
the line-up for additional camouflage. There are no internal
joint trims on the lower
bumpers.
P/N 0518253_B U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
1-4 INSTALLATION
Internal
Joint Trims
Starter
Bumper
Splashguard
in place
Starter
Bumper at
Right End
Full
Length
Bumper
Full
Length
Bumper
Lower
Bumper
Upper
Bumper
Starter
Bumper
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.
Low Temperature
Multi-deck Frozen Food
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
P/N 0518253_B 1-5
Push
“Snap”
Lift
Bumper
Push
Push
“Snap”
Miter Box
SPLASHGUARD BRACKET
AND JOINT SUPPORT
Install Splashguard Bracket
Position splashguard brackets to the merchandiser and level to the floor. Each bracket has a
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 below. Fasten with sheet metal
screws.
P/N 0518253_B U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
1-6 INSTALLATION
Bracket
Base of Case
Screw
Joint Support
REFRIGERANT
The correct type of refrigerant will be
stamped on each merchandiser’s serial plate
located on the left-hand end of the interior
top liner. The case refrigeration piping is
leak tested, factory sealed and pressurized.
Before making refrigeration hookups,
depress Schrader 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
merchandiser to merchandiser D
O NOT RUN
REFRIGERANT LINES THROUGH MERCHANDISERS
THAT ARE NOT ON THE SAME REFRIGERATION
SYSTEM
or BRANCH as this may result in poor
refrigeration control and compressor failure.
Interconnecting piping inside the merchandiser
must be positioned to allow room for lifting
the hinged fan plenums and for clearance
beneath the display pans.
Line Sizing
Refrigerant lines should be sized as shown on
the refrigeration legend that is furnished for
the store or according to ASHRAE guidelines.
Note: If Koolgas defrost is used, the liquid
line will need to be increased two sizes larger
inside the merchandiser area. This is necessary to ensure even liquid drainage from all
evaporators during defrost.
Oil Traps
P-traps (oil traps) must be installed at the base
of all suction line vertical risers.
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.
Low Temperature
Multi-deck Frozen Food
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
P/N 0518253_B 2-1
REFRIGERATION / ELECTRICAL
Splashguard brackets MUST be installed
before piping case.
Refrigeration lines are under pressure and
should be depressurized before attempting
to make any connections.
WARNING
CAUTION
INSULATION
With GAS Defrost
The suction and liquid lines should NOT
contact each other and should be insulated
separately for a minimum of 30 ft (9144 mm)
from the merchandiser.
With OTHER Than Gas Defrost
The suction and liquid lines should be clamped
or taped together and insulated for a minimum
of 30 ft (9144 mm) from the merchandiser.
With EITHER of Above
Additional insulation for the balance of the
liquid and suction lines is recommended wherever condensation drippage is objectionable or
the lines are exposed to ambient conditions.
REFRIGERATION THERMOSTAT
The refrigeration thermostat body is located in
the electrical wireway. The bulb, when factory
installed, is located in the discharge flue.
DEFROST TERMINATION THERMOSTAT
The standard disc type defrost termination
thermostat is not adjustable. This thermostat is clamped to the coil inlet tube.
EXPANSION VALVE ADJUSTMENT
Expansion valves must be adjusted to fully
feed the evaporator. Before attempting to
adjust valves, make sure the evaporator is
either clear or only lightly covered with frost,
and that the fixture is within 10°F of its
expected operating temperature. Adjust valves
as follows.
Attach two (2) sensing probes (either thermocouple or thermistor) to the evaporator. Put
one under the clamp holding the expansion
valve bulb and securely tape the other to the
coil inlet line.
Some “hunting” of the expansion valve is
normal. The valve should be adjusted so that
during the hunting the greatest difference
between the two probes is 3–5°F (1.7–2.7°C).
With this adjustment, during a portion of the
hunting, the temperature difference between
the probes will be less than 3°F (1.7°C). Make
adjustments of no more than one-half (
1
/2)
turn of the valve stem at a time and wait for at
least 15 minutes before rechecking the probe
temperature and making further adjustments.
CDA SENSOR (OPTIONAL)
Factory installed optional CDA sensor is located
where the thermostat bulb would normally be
located. Its leads will be routed through the
electrical wireway and to the rack control
panel. Leads are tagged in the wireway.
2-2 REFRIGERATION / ELECTRICAL
P/N 0518253_B U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
MERCHANDISER ELECTRICAL DATA
Merchandiser data sheets for specific models
are shipped with this manual. The data sheets
provide case electrical data, electrical schematics,
parts lists and performance data. Refer to the
merchandiser data sheets and case serial plate
for electrical infor mation.
FIELD WIRING
Field wiring must be sized for component
amperes stamped on the serial plate. Actual
ampere draw may be less than specified. Field
wiring from the refrigeration control panel to
the merchandisers is required for defrost termination thermostats and for optional refrigeration
thermostats. When multiple merchan disers are
on the same defrost circuit, the defrost termination
thermostats are wired in series.
ALWAYS CHECK THE SERIAL PLATE FOR
COMPONENT AMPERES
.
ELECTRICAL CONNECTIONS
All wiring must be in compliance with NEC
and local codes. All electrical connections are
to be made in the electrical wireway on the
serial plate side of the case (front).
IDENTIFICATION OF WIRING
Leads for all electrical circuits are identified by
wire insulation color or colored plastic bands.
These bands correspond to the color code
sticker (shown below) located inside the
merchandiser’s wireway.
Low Temperature
Multi-deck Frozen Food
HUSSMANN CORPORATION, Bridgeton, MO 63044-2483 U.S.A.
P/N 0518253_B 2-3
WIRING COLOR CODE
Leads for all electrical circuits are identified by a colored plastic band: neutral
wire for each circuit has either White insulation or a White plastic sleeve in
addition to the color band.
P
INK ............REFRIG. THERMOSTAT LOW TEMP.ORANGE OR
LIGHT BLUE ..REFRIG. THERMOSTAT NORM TEMP.TAN ..........LIGHTS
DARK BLUE ..DEFROST TERM. THERMOSTAT MAROON...RECEPTACLES
PURPLE........CONDENSATE HEATERS YELLOW ....DEFROST HEATERS 120V
BROWN ........FAN MOTORS RED ........DEFROST HEATERS 208V
G
REEN* .......GROUND *EITHER COLORED SLEEVE OR COLORED INSULATION
ELECTRICIAN NOTE: Use copper conductor wire only.
MERCHANDISER MUST BE GROUNDED
THESE ARE MARKER COLORS WIRES MAY VARY.
NOTES
2-4 REFRIGERATION / ELECTRICAL
P/N 0518253_B U.S. & Canada 1-800-922-1919 • Mexico 1-800-890-2900 • www.hussmann.com
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