hussman FMSS-L User Manual 2
Manual
Installation
& Operation
REV. 0508
/CHINO
FMSS-L
CASE-FRONT SELF SERVICE
FMSS-L
CASE-FRONT SELF SERVICE REFRIGERATED MERCHANDISER
P/N IGSS-FMSS-L-0508
INSTALLATION & OPERATION GUIDE
General Instructions
This equipment is to be installed
to comply with the applicable
NEC, Federal, State , and Local
Plumbing and Construction
Code h a v in g ju r i s diction.
Table of Contents
General Instructions.....................................................2
Cut and Plan Views ......................................................3
Installation .....................................................................3
Location ..................................................................................... 3
Uncrating the Stand ................................................................... 3
Exterior Loading ......................................................................... 3
Setting and Joining .................................................................... 3
Leveling .....................................................................................3
Joint Trim ................................................................................... 4
Plumbing .......................................................................5
Waste Outlet and P-TRAP ......................................................... 5
Installing Condensate Drain....................................................... 5
Refrigeration .................................................................5
Refrigerant Type ........................................................................ 5
Refrigeration Lines ..................................................................... 5
Control Settings - Remote ......................................................... 5
Control Settings - Self Contained .............................................. 5
Access to TX Valves and Drain Lines ........................................ 5
Electronic Expansion Valve (Optional) ....................................... 5
Thermostatic Expansion Valve Location .................................... 6
Measuring the Operating Superheat.......................................... 6
T-STAT Location ........................................................................ 6
Ballast Location .........................................................................6
Electrical........................................................................7
Wiring Color Code ..................................................................... 7
Electrical Circuit Identication .................................................... 7
Electrical Service Receptacles (When Applicable) .................... 7
Field Wiring and Serial Plate Amperage .................................... 7
Ballast Location .........................................................................7
User Information ........................................................... 7
Stocking ..................................................................................... 7
Important Steps .........................................................................8
Case Cleaning ........................................................................... 8
Cleaning Glass and Mirrors ....................................................... 8
Plexiglass and Acrylic Care ....................................................... 8
Cleaning ..................................................................................... 8
Antistatic Coatings ..................................................................... 8
Maintenance .................................................................. 9
Replacing Fluorescent Lamps ................................................... 9
Evaporator Fans ........................................................................ 9
Copper Coils .............................................................................. 9
Tips and Troubleshooting .......................................................... 9
Electrical Wiring Diagrams .......................................... 9
Wiring Diagrams .........................................................10
Appendices .................................................................17
Appendix A. - Temperature Guidelines .................................... 17
Appendix B. - Application Recommendations .......................... 17
Appendix C. - Field Recommendations ................................... 17
Appendix D. - Recommendations to User ............................... 18
IGSS-FMSS-L-0508
This Booklet Contains Information on:
FMSS-L, FMSS-L-L-Remote
The FMSS-L, FMSS-L-L is a single-deck, refrigerated,
self-service merchandiser, which offers additional related
display when positioned in front of a “Parent” service case.
The FMSS-L, FMSS-L-L only ts under Hussmann Chino
Style cases.
Shipping Damage
All equipment should be thoroughly examined for shipping
damage before and during unloading.
This equipment has been carefully inspected at our factory
and the carrier has assumed responsibility for safe arrival.
If damaged, either apparent or concealed, claim must be
made to the carrier.
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. The carrier will
supply necessary claim forms.
Concealed Loss or Damage
When loss or damage is not apparent until after equipment
is uncrated, a claim for concealed damage is made. Make
request in writing to carrier for inspection within 15 days,
and retain all packaging. The carrier will supply inspection
report and required claim forms.
Shortages
Check your shipment for any possible shortages of
material. If a shortage should exist and is found to be the
responsibility of Hussmann Chino, notify Hussmann Chino.
If such a shortage involves the carrier, notify the carrier
immediately, and request an inspection. Hussmann Chino
will acknowledge shortages within ten days from receipt
of equipment.
Hussmann Chino Product Control
The serial number and shipping date of all equipment
has been recorded in Hussmann’s les for warranty and
replacement part purposes. All correspondence pertaining
to warranty or parts ordering must include the serial number
of each piece of equipment involved, in order to provide
the customer with the correct parts.
Keep this booklet with the case at all times for future reference.
/CHINO
A publication of HUSSMANN® Chino
13770 Ramona Avenue • Chino, California 91710
(909) 628-8942 FAX
(909) 590-4910
(800) 395-9229
2
Rev. 0508
FMSS
Front-Mount Self-Service case. Can be ordered to mount in front
of ANY service case. Base height can be modified to match any
service case bumper height.
ASC
PARENT CASE
FMSS
Height Modified to
match the ASC case
20"
“Field” Close Off
FMSS-L
Self-Service
Remote (Self Contained)
Scale = 1"
16'' Remote
211/2" S.C.
*26
3
/
8
"
*Dimensions
adjust at theses
points to match
service case
height
13
1
/
2
"
113/4"
*10
1
/
2
"
6
1
/
8
"
26'' Remote
28
5
/
8
" S.C.
37/8" Remote
87/8" S.C.
F
a
n
4'
(VARIABLE LENGTHS)
3
1
/
2
"
41/2"
12
1
/
2
"
24"
9
7
/
8
"
16"
(21
1
/
2
"
S.C.)
25/8"
Ref. Drop In
Elec.
Drain
FMSS-L
Plan View
Scale = 1/2"
Cut and Plan Views
Location
The refrigerated merchandisers have been designed
for use only in air conditioned stores where temperature
and humidity are maintained at or below 75°F and 55%
relative humidity. DO NOT allow air conditioning, electric
fans, ovens, open doors or windows (etc.) to create air
currents around the merchandiser, as this will impair its
correct operation.
Product temperature should always be maintained at a
constant and 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 life of the product.
Uncrating the Stand
Place the xture as close to its permanent position as
possible. Remove the top of the crate. Detach the walls
from each other and remove from the skid. Unbolt the case
from the skid. The xture can now be lifted off the crate
skid. Lift only at base of stand!
Installation
Exterior Loading
These models have not been structurally designed to
support excessive external loading. Do not walk on their
tops; This could cause serious personal injury and damage
to the xture.
Setting and Joining
The case that the FMSS-L connects to (the parent case)
through the rear of the case must be leveled and set prior to
installing the FMSS-L. The sectional construction of these
models enable them to be joined in line - to give the effect of
one continuous display. A joint Trim Kit is supplied with each
case line to cosmetically “mask” the sectional joints.
Leveling
IMPORTANT! IT IS IMPERATIVE THAT CASES BE
LEVELED FROM FRONT TO BACK AND SIDE TO SIDE
PRIOR TO JOINING. A LEVEL CASE IS NECESSARY
TO INSURE PROPER OPERATION, WATER DRAINAGE,
GLASS ALIGNMENT, AND OPERATION OF THE HINGES
SUPPORTING THE GLASS. LEVELING THE CASE
CORRECTLY WILL SOLVE MOST HINGE OPERATION
PROBLEMS.
3
Fig. 2, #1
It is the contractor’s responsibility to install
case(s) according to local construction and
health codes.
Do not use the top bracket on the
rear mullion to pull the cases together.
Proper case-joint sealing is
extremely important to prevent
water leaks!
Installation (Cont'd)
NOTE: A. To avoid removing concrete ooring, begin lineup
leveling from the highest point of the store oor.
B. When wedges are involved in a lineup, set them rst.
All cases were leveled and joined prior to shipment to
insure the closest possible t when cases are joined in
the eld. When joining, use a carpenters level and shim
legs accordingly. Case must be raised correctly, under legs
where support is best, to prevent damage to case.
1. Check level of oor where cases are to be set.
Determine the highest point of the oor; cases will
be set off this point.
2. Level and set the rst case, carefully guiding the
electrical, refrigeration and drain lines through the
parent case. Case must be raised under legs where
support is best to prevent damage to case. Internal
bracing may be removed at this time.
3. Set second case as close as possible to the rst
case carefully guiding its electrical, refrigeration and
drain lines through the parent case, and level case
to the rst using the instructions in step one.
4. Apply masking tape 1/8” in from end of case on inside
and outside rear mullion on both cases to be joined.
5. Apply liberal bead of case joint sealant (butyl) to
(dotted area shown in gure) rst case. Apply heavy
amount to cover entire shaded area.
DO NOT USE PERMAGUM!
IGSS-FMSS-L-0508
6. Slide second case up to rst case snugly. Then level
second case to the rst case so glass front, bumper
and top are ush.
7. To compress silicone at joint, use two Jurgenson
wood clamps. Make sure case is level from front to
back and side to side on inside bulkheads at joint.
8. Attach sections together with the two 3/8” bolts
provided, below the deck at the mullion towards the
rear of the FMSS-L. Remove clamps.
9. Apply bead of silicone to top of bulkheads and slip
on stainless steel bulkhead cap. Also apply silicone
to seam between overhead light tubes.
10. VERY IMPORTANT! Apply liberal amounts of black
silicone to ll all voids down to bulkhead.
11. Use nger to smooth silicone as thin as possible at
masking tape on inside and outside of rear mullion
(apply additional silicone if necessary). Remove
tape applied on line #3.
Joint Trim
After cases have been leveled and joined, and refrigeration,
electrical, and wasted piping work completed, install the
splashguards. Fasten along the top edge, or center, with
#10 X 3/3” sheet metal screws.
DO NOT SEAL JOINT TRIM TO FLOOR!
4
Rev. 0508
Plumbing
Waste Outlet and P-TRAP
The waste outlet is located at the left hand end of these
xtures allowing drip piping to be run under the xture
lengthwise.
A 1” P-TRAP and threaded adapter are supplied with each
xture. The P-TRAP must be installed to prevent air leakage
and insect entrance into the xture.
Installing Condensate Drain
Poorly or improperly installed condensate drains can
seriously interfere with the operation of this refrigerator, and
result in costly maintenance and product losses. Please
follow the recommendations listed below when installing
condensate drains to insure a proper installation:
1. Never use pipe for condensate drains smaller
than the nominal diameter of the pipe or P-TRAP
supplied with the case.
2. When connecting condensate drains, the P-TRAP
must be used as part of the condensate drain
to prevent air leakage or insect entrance. Store
plumbing system oor drains should be at least 14”
off the center of the case to allow use of the P-TRAP
pipe section. Never use two water seals in series in
any one line. Double P-TRAPS in series will cause a
lock and prevent draining.
Refrigeration
Refrigerant Type
The standard refrigerant will be R-404 unless otherwise
specied on the customer order. Check the serial plate on
the case for information.
Piping for more than one case on a condensing unit is run
underground with either common suction and liquid lines
from the machine room or individual suction and liquid lines
joined together in the machine room.
Refrigeration Lines
Liquid Suction
3/8” O.D. 5/8” O.D.
NOTE: The standard coil is piped at 5/8” (suction); however,
the store tie-in may vary depending on the number of
coils and the draw the case has. Depending on the case
setup, the connecting point in the store may be 5/8”, 7/8”,
or 11/8”. Refer to the particular case you are hooking up.
Refrigerant lines should be sized as shown on the
refrigeration legend furnished by the store.
Install P-TRAPS (oil traps) at the base of all suction line
vertical risers.
Pressure drop can rob the system of capacity. To keep the
pressure drop to a minimum, keep refrigerant line run as
short as possible, using the minimum number of elbows.
Where elbows are required, use long radius elbows only.
For refrigerators with KOOLGAS defrost, suction, and
liquid lines should not contact each other and should
be insulated for a minimum of 30’ from the refrigerator.
Additional insulation for the balance of liquid and
suction lines is recommended and required wherever
condensation and dripping would be objectionable.
3. Always provide as much down hill slope (“fall”) as
possible; 1/8” per foot is the preferred minimum.
PVC pipe, when used, must be supported to
maintain the 1/8” pitch and to prevent warping.
4. Avoid long runs of condensate drains. Long runs
make it impossible to provide the “fall” necessary for
good drainage.
5. Provide a suitable air break between the ood rim of
the oor drain and outlet of condensate drain. 1” is
ideal.
6. Prevent condensate drains from freezing:
a. Do not install condensate drains in contact with
non-insulated suction lines. Suction lines should
be insulated with a non-absorbent insulation
material such as Armstrong’s Armaex.
b. Where condensate drains are located in dead
air spaces (between refrigerators or between a
refrigerator and a wall), provide means to prevent
freezing. The water seal should be insulated to
prevent condensation.
Control Settings - Remote
See FMSS-L technical data sheet for the appropriate
settings for your merchandiser. Maintain these parameters
to achieve near constant product temperatures. Product
temperature should be measured rst thing in the morning,
after having been refrigerated overnight. Defrost times
should be as directed in the FMSS-L technical data sheet.
The number of defrosts per day should never change.
The duration of the defrost cycle may be adjusted to meet
conditions present at your location.
Control Settings - Self Contained
On Self Contained cases all functions, defrost, fans,
temperature are controlled by Pagon ERC-2 controller. See
case specs for proper temperature and defrost settings.
Access to TX Valves and Drain Lines
Mechanical - Remove product from end of case. Remove
product racks. Remove refrigeration and drain access
panels (labeled). TX valve (mechanical only) and drain are
located under each access panel at end of the case.
Electronic - The Electronic Expansion valve master and
slave cylinder(s) are located within the electrical access
panel(s).
Electronic Expansion Valve (Optional)
A wide variety of electronic expansion valves and case
controllers can be utilized. Please refer to EEV and
controller manufacturers information sheet. Sensors for
electronic expansion valves will be installed on the coil inlet,
coil outlet, and in the discharge air. (Some supermarkets
require a 4th sensor in the return air). Case controllers will
be located in the electrical raceway or under the case.
5
Front of Case
It is the contractor’s responsibility to install
case(s) according to local construction and
health codes.
Refrigeration (Cont'd)
Thermostatic Expansion Valve Location
This device is located on the same side as the refrigeration
stub. An Alco balanced port expansion valve model
is furnished as standard equipment, unless otherwise
specied by customer.
Expansion Valve Adjustment
Expansion valves must be adjusted to fully feed the
evaporator. Before attempting any adjustments, make
sure the evaporator is either clear or very lightly covered
with frost, and that the xture is within 10°F of its expected
operating temperature.
Measuring the Operating Superheat
1. Determine the suction pressure with an accurate
pressure gauge at the evaporator outlet.
2. From a refrigerant pressure temperature chart,
determine the saturation temperature at the
observed suction pressure.
3. Measure the temperature of the suction gas at the
thermostatic remote bulb location.
4. Subtract the saturation temperature obtained in step
No. 2 from the temperature measured in step No. 3.
5. The difference is superheat.
6. Set the superheat for 5°F - 7°F.
T-STAT Location
Thermostats are located within the electrical raceway.
The raceway location is dependent on the style of the
front panel and whether the case is going to be pushed
up against a wall.
IGSS-FMSS-L-0508
Ballast Location
Ballast and T-stat are located in the front right hand area
of the case, viewed from customer angle.
In all cases, the thermostat is located on the same side of
the case. If you are looking at the case from the front, it is
the right-hand side. If you are looking at the case from the
back, it is the left-hand side.
6
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