hussman IGSV-ASCS-0303 User Manual
Manual
Installation
& Operation
/Chino
ASCS
REV.0303
DELI, MEAT, FISH SERVICE CASE
ASCS
DELI, MEAT, FISH
SERVICE CASE
P/N IGSV-ASCS-0303
INSTALLATION & OPERATION GUIDE
Ta b l e of Contents
IGSV-ASCS-0303
General Instructions
THIS BOOKLET CONTAINS INFORMATION ON:
General Instructions ................................................. 2
Cut & Plan Views ....................................................... 3
Installation ................................................................. 3
LEVELING.............................................................................................................. 4
Plumbing .................................................................... 6
WASTE OUTLET AND P-TRAP .............................................................................. 6
Manifold Flush System ............................................. 7
Humidity System ...................................................... 9
Refrigeration ............................................................. 10
T-STAT LOCATION.................................................................................................. 11
Electrical .................................................................... 12
WIRING COLOR CODE ......................................................................................... 12
ASHRAE COLOR CODE .......................................................................................... 12
Finishing Touches ...................................................... 13
JOINT TRIM........................................................................................................... 13
User Information ...................................................... 14
STOCKING.............................................................................................................. 14
CASE CLEANING.................................................................................................... 14
NON-GLARE GLASS ............................................................................................... 15
PLEXIGLASS and ACRYLIC CARE........................................................................... 15
REPLACING FLUORESCENT LAMPS ....................................................................... 16
Maintenance .............................................................. 16
TIPS and TROUBLESHOOTING .............................................................................. 16
LIFT UP GLASS ..................................................................................................... 17
Electrical and Refrigeration Specifications ............ 19
Electrical Schematics ............................................... 20
Appendices ................................................................ 35
APPENDIX A. – Temperature Guidelines ............................................................ 35
APPENDIX B. – Application Recommendations.................................................. 35
APPENDIX C. – Field Recommendations - ......................................................... 35
APPENDIX D. – Recommendations to user - .................................................... 36
ASCS refrigerated, service deli, meat, fish mechandiser
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 files 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
The Hussmann warranty is printed on the back
of this guide.
2
Rev.0303
Cut & Plan Views
1
6
/4"
3
8
/4"
"
1
3
0
3
/4"
"
8
"
/
1
3
2
0
2
1
1
/2"
1
Single Deck Refrigerated Service
1
9
2
/2"
5
4
"
ASCS
Scale = 1/2"
1
"
8
/
5
"
5
4
4
3
4
"
11"
1"
8"
MECHANICAL
STUB UP AREA
19" X 19"
DRAIN
CASE FRONT
(VARIABLE LENGTHS)
ASCS
Plan View
Scale = 1/4"
8'-2"
WATER, ELEC.
& REFRIG.
MECHANICAL
STUB UP AREA
19" X 19"
45"
1"
ASC with
22 1/2º Wedge
ASC with 22 1/2º Wedge
Installation
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 fixture as close to its permanent position as
possible. Keep in place, attached case until ready to set/
bolt to adjoining case.
TIGHTEN GLASS SCREWS
Tighten screws along clamshell located on the underside
of glass before placing unit into operation.
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 fixture.
SETTING AND JOINING
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 joint.
3
Installation (continued)
IGSV-ASCS-0303
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 all hinge operation and
glass alignment problems.
NOTE: A. To avoid removing concrete flooring, begin lineup
leveling from the highest point of the store floor.
B. When wedges are involved in a lineup, set them first.
All cases were leveled and joined prior to shipment to
insure the closest possible fit when cases are joined in the
field. When joining, use a carpenters level and adjust legs
accordingly. The legs on the ASCS are adjustable and do
not require shims. Simply screw the leg up or down to
adjust height.
1. Using case blueprints, measure off and mark on the
floor the exact dimensions of where the cases will sit.
Snap chalk line for front and back positions of base rail
or pedestal. Mark the location of each joint front and
back. Find the highest point throughout the lineup.
FLOORS ARE NORMALLY NOT LEVEL! Determine
the highest point of the floor; cases will be set off this
point. All cases in the entire lineup must be brought
up to the highest level of the case sitting at the highest
point in the lineup. This may be done a few different
ways. 1) Walk the floor looking for any mounds or dips.
2) Use a string level. 3) Use a transit. If a wedge is used
in the middle of a lineup, the wedge must be set on the
highest point on the floor FIRST, with the rest if the
lineup being leveled from it. The ASCS case has
adjustable legs to allow for leveling.
NOTE: The mock pedestal option supplies panels that
clamp on to adjustable legs.
2. Set first case over the highest part of the floor and
adjust legs so that case is level. Remove side and back
leg braces after case is set and joined.
3. Set second case within one foot (1’) of the first case,
and remove end shipping support. Keep the supports
along the length of the case and far end of case. Level
case to the first 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 first
case. Sealant area is shown using a dotted line in
illustration in Step 8. Apply heavy amount to cover
entire shaded area.
DO NOT USE PERMAGUM
Butyl
ASCS
Butyl Locations
Butyl
4
Rev.0303
Installation (continued)
It is the contractor's responsibility to install
case(s) according to local construction and
health codes.
6. Slide second case up to first case snugly. Then level
second case to the first case so glass front, bumper and
top are flush.
Do not use bolts to pull cases together!
7. To compress butyl 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 via the bolts pictured in the
illustration below.
1/4” Binding Post
5/16” Bolts
ASCS
Bolt Locations
9. Apply bead of butyl to top of bulkheads and slip on
stainless steel bulkhead cap. Also apply silicone to
seam between overhead light tubes.
10. Use finger 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 #4.
11. Remove front, back and end shipping braces.
INSIDE REFRIGERATED WEDGES
Line up taper pins with holes on adjoining case. Turn
camlock to lock in. Two camlocks are located at the rear
of the case behind the air discharge and behind the lower
electrical raceway access panel. Bolt the wedge into the
adjoining case in the front. If the adjoining case is
refrigerated, the bolt is located under the pans in the front.
When the adjoining case is a hot case, the cases are bolted
together by mans of a bracket located behind the front
panel. Remove the front panel by lifting it up and out..
COMMON END BETWEEN UNLIKE CASES
AND HOT CASES
Bolt the end onto the case using the bolts provided in
predrilled holes behind the front of the panel through the
bracket provided and in the rear behind the rear access
panel on the bottom Common ends between refrigerated
cases are also bolted together behind the air discharge
panel. Remove the discharge panel by lifting up and out.
Hot cases are only bolted in two places, in the rear of the
case, behind the access panel, and in the front of the case
behind the front panel.
OUTSIDE REFRIGERATED WEDGE:
Ta per pin and camlock locations are the same as a standard
case.
INSIDE DRY WEDGES
Bolt the wedge into the sides of the adjoining case. Use
the bolts provided
INSIDE PEDESTAL WEDGES
Set the wedge on adjoining case’s mounting brackets
located at the base of the unit, and bolt down. Drive screws
provided through the sides of the wedge (4 screws per
side), accessible through the back of the wedge.
1. Secure the joint backer located behind the cart
bumper support at the joints. To adjust the front panel.
Loosen the screws holding the bumper on the case on
either side the joint, and slide the extrusion to the
center of the joint.
2. Starting from a center case in a lineup or wedge, align
the front panels. Front panels can be loosened and
adjusted laterally by loosing the screws holding the
case bumper channel.
5
ARM STRUT
GUSSET
IGSV-ASCS-0303
Installation (cont.)
Corner wedges are attached via front and rear camlocks.
Use a 7mm Allen wrench to turn the locks. Do not
overtighten! Join the top by using a joint bracket (included
in joint kit) with 3/8" bolts.
WEDGE BRACKET
Plumbing
WASTE OUTLET AND P-TRAP
The waste outlet is located off the center of the case on
one side allowing drip piping to be run lengthwise under
the fixture.
A 1-1/2" P-trap and threaded adapter are supplied with
each fixture. The P-trap must be installed to prevent air
leakage and insect entrance into the fixture.
NOTE: PVC-DWV solvent cement is recommended.
Follow the Hussmann’s instructions.
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
floor 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 Ptraps in series will cause a lock and prevent draining.
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 flood rim of
the floor 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 nonabsorbent insulation material
such as Armstrong’s Armaflex.
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.
6
Rev.0303
Manifold Flush System
GENERAL DESCRIPTION
The flush system generates a high pressure water stream
meant to flush most residue buildup from the bottom of
the manifold chamber. This is the area that residue builds
and expands. Frequency of this periodic maintenance will
vary depending on water mineral content and sanitary
conditions.
MANUAL FLUSH SYSTEM
Water valve is located on the outside of the case, in the
rear, on the left hand side as viewed from the rear.
AUTOMATIC FLUSH SYSTEM
Electrical components are located within the electrical
raceway. Electrical components in this area are 115V AC.
Step-down transformer is located in the wireway, and is
controlled by pump switch. Water flow for flush system is
rated at 0.25 GPM at 60 PSI water pressure. Flush nozzle
located in the rear of the case.
BASIC SYSTEM OPERATION:
1. Filtered water is supplied to the 115V solenoid valve.
2. At a time of day determined by you, the 115V time
clock will energize the solenoid for two (2) minutes.
PROGRAMMING THE TIMER
The circular keypads are positioned to provide a sequential
[at for programming. Starting the Prog. button to select a
program clockwise to ON/OFF, h for hour, m for minute,
and finally Day to select the day for days of the week you
wish the flush to operate on. If one of these selections is
omitted, the control will flash when the clock or program
key is depressed. The missing entry must be completed
before the programming can resume.
•A program consists of
1. ON/OFF
2. Hour and minute
3. Day or multiple days on which it is to occur.
• Res. is the reset key and will erase the current
program.
• The ±h key adjusts the set clock time for daylight
savings time.
•Military time (24 hr clock) or 12 hour clock may be
selected by pressing and holding the h key while
depressing the ±h key.
•A flashing light indicated a missing selection in the
program or a low battery. Check to make sure the
timeclock’s program is complete (ON/OFF, time, and
days)
NOTE: If the h and m keys are held down longer than 2
seconds, the numbers will advance rapidly. Press and hold
the (2) day during the following: (If Daylight Savings Time is
In effect, press ±1h first).
1. Press the Prog. key.
1 2 4 5 6 7
AM– –:– –
will appear in display.
2. Press the key between ON/OFF. The word ON will
appear.
3. Press h to select hour for initial system startup.
4. Press m to select the minute the system starts up (30
for 10:30)
5. Select the days desired with the Day key.
1. If the program is to occur every day of the week,
ignore Day and press Prog. key to advance to next
program.
2. If specific, 7 day time control is desired, press Day
and 1-5 will appear for Mon. - Fri. Pressing Day
again will display 6,7 for Sat. and Sun.
6. Press the key between ON/OFF to select the cycle
termination time. The word OFF will appear.
7. Press h to select hour the system terminates.
8. Press m to select the minute the system terminates.
9. Repeat with the days.
10. Press Prog. key and repeat steps 2 thru 11 for
additional defrost schedules.
11. After programming press clock key to enter run
mode.
NOTE: If the days are flashing, it indicates the day of the week was not set
when setting the time. The timer cannot be programmed unless the day of
the week is entered.
±
1
Off
h
r
.
Sa
Su
Fr
h
m
.
g
o
r
P
Ref.
On
Mo Tu We
GRÄSSLIN
Th
Day
START UP:
1. Manually move time clock to initiate a flush cycle.
2. Observe that flush nozzle is spraying down center of
manifold chamber.
3. Set clock to correct time of day.
4. Set trip pins to the “time of day system is to flush”
(NOTE: Two [2] flushes per day!)
7
These two components
are now assembly
NOZZLE - MONARCH
Model #: H-545-R2-0.72-360 303SS
# 225-01-2004-SS
NIPPLE (1/2) 3" LONG
304 SS PIPE
# 225-01-0602
USE WASHERS
(IF REQUIRED)
ELBOW 90°
1/4" NPT x 1/4" NPT
# 225-01-0336
WASHER # 038222
PERMAGUM SEAL
COMPRESSION FITTING
PVC - 1/4" NPT x 1/2" OD
# 225-01-1323
part # 225-01-0603
(HOCKEY-POCK SPACER)
POLYURETHANE COAT
INSULATION @
CENTER OF CASE
(FRONT TO BACK)
CASE BOTTOM LINER
(16 GA. GALV)
1/2" OD POLY TUBING
# 225-01-0003
Nozzle and Components with Part Numbers
1/2" OD POLY TUBING
# 225-01-0003
LEAVE AT LEAST 10'
FOR FIELD CONNECTION
WASHER / PIPE ASSEMBLY
304 STAINLESS
# 225-01-0603
NOZZLE - MONARCH
Model #: H-545-R2-0.72-360
303SS
# 225-01-2004-SS
ELBOW 90°- BRASS
1/4" NPT x 1/4" NPT
# 225-01-0336
COMPRESSION FITTING
PVC - 1/2" OD x 1/2" NPT
# 225-01-1322
SOLENOID VALVE
ALCO 222CB- B- B-AMS
# 225-01-1340
COMPRESSION FITTING
PVC - 1/2" OD x 1/2" FPT
# 225-01-1327
(FIELD CONNECTION)
HAND BALL VALVE
PVC - 1/2" FPT - FULL
BORE - # 225-01-2122
IGSV-ASCS-0303
Nozzle count to change
according to case length.
COMPRESSION FITTING
PVC - 1/4" NPT x 1/2" OD
# 225-01-1323
Water Flush Fittings with Part Numbers
#5-32 SELF
TAP SCREW
COMPRESSION FITTING
PVC - 1/2" OD x 1/2" NPT
# 225-01-1322
SOLENOID VALVE BODY
ALCO 222CB- B# 225-01-1340
#5-32 SELF
TAP SCREW
UNION TEE COMPRESSION
PVC - 1/2" OD x 1/2" OD
# 225-01-1324
BRACKET
# 038244
COMPRESSION FITTING
PVC - 1/2" OD x 1/2" NPT
# 225-01-1322
BRACKET
# 038244
#5-32 SELF
TAP SCREW
#5-32 SELF
TAP SCREW
WATER PRESSURE
REGULATOR
SPRAY SYSTEMS CO. 6815-1/2
# 225-01-1403
IN-LINE STRAINER - CLEAR
BOWL - NYLON 1/2" MPT
TEEL 2P131 # 225-01-2133
SOLENOID COIL
ALCO- AMS
COMPRESSION FITTING
PVC - 1/2" OD x 1/2" NPT
# 225-01-1322
Solenoid Valve and Part Numbers
8
Rev.0303
Humidity System
GENERAL DESCRIPTION
One contributor to the spoilage of fresh meats is
dehydration, which causes loss in weight and volume
(shrinkage) and product discoloration. As the refrigeration
system removes heat from the case, it also removes critical
moisture from the air, and any unwrapped products in the
case. The Humidity System replaces the moisture in the
air, in order to compensate for the moisture taken by the
refrigeration system, and disposed of down the drain line.
The system is built into the discharge plenum, and mixes
moisture laden air with refrigerated air before the air is
passed through - and around the product.
The system is constructed almost entirely of PVC pipe,
and uses air that is subcooled to approximately the same
temperature as the case. The sub-cooling of air inhibits
the formation of growth found to be a problem in other
humidification systems. Maintenance is almost unnecessary
if you follow a few simple rules:
1. Keep the case clean.
2.Keep the water filter clean, and change it every six
to twelve months or sooner, depending on the kind of
water found in your area.
3. Flush the header every six (6) months, by loosening
the connecting “L”, then removing it from the case, and
flushing with a hose.
**IMPORTANT INFORMATION**
The ASCS is capable of maintaining superb product quality
with the installation of the proper controlling devices. These
devices should be set according to the Hussmann’s
specifications. The humidity system should be properly
maintained. Incorrect settings and failure to maintain the
humidity system will result in short product life. Below
are a few guidelines for optimum performance and product
life:
• Set thermostat to cut in at the discharge temperature
designated in the case specifications section of the
appropriate installation guide or spec. sheet. Maintain
the recommended product temperature for Deli,
Meat, and Fish. DO NOT set temperature too cold, as
this causes product dehydration.
•Temperatures should be achieved by means of a T-Stat
and Suction Solenoid at each case. DO NOT use EPR
valves, Liquid Line Solenoids, or electronic control
devices of any kind. These controls allow temperature
swings that cause dehydration and excessive energy
consumption.
• Set defrost cycles as listed in the Case Specifications
Data for your particular case. 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.
•Clean humidity system a minimum of every 90 days for
proper system operation.
•Work and rotate product - not to exceed a four (4)
hour period.
•At night, turn off case lights, and cover unwrapped
product with moistened cheesecloth or fabric towels.
•Keep meat holding box at 32°F.
•Keep meat prep room refrigerated at 55°F.
• Meat Bloom Box (if applicable) should be at 36°F.
• Meat must enter the case at 40°F or below. Product
deteriorates rapidly above 40°F.
•Clean, sanitary conditions are required throughout the
meat holding, prep, and work areas.
• Do not display product directly within the air
discharge
•Turn and rotate meat. The blood works down through
the meat over time, which causes the top surface to
discolor and dehydrate. Turn meat 3-4 times per day.
• It is not required to remove product from case
overnight. Turn off case lights, and cover product with
moistened cheesecloth or fabric towel. This helps slow
down product dehydration, by taking moisture from
the cloth and not the product. This is an old method
used by meat shops for many years, as it extends
product life.
• Cold coils remove heat and moisture from the case
and deposit this as frost onto the coil. Thus a defrost
is required to remove this frost. Our humidity system
induces moisture into the case, and helps slow down
the dehydration process. The only other moisture in
the case is that which is in the product. A single level
of meat will dry out faster than a fully loaded case with
3-4 levels of meat.
• The colder the case, the faster the product loses its
moisture and shelf life. It is very important to maintain
a constant, even, correct, product temperature.
HUMIDIFICATION SYSTEM HOOKUPS
Remove the raceway panel on the lower back of the case.
The pre-piped water shut-off valve and the water filter
are located on the left hand side of the case. The water
line (which is a 1/4" OD copper fitting) can be connected
to the ball shut-off valve, by means of a compression fitting
(supplied). The line should be one size larger than the supply
line. The line can then be run from one case to another
from within the raceway(s) using Tee connectors. Before
connecting the water to the humidity system, it is best to
9
Humidity System (cont.)
purge the line to flush any debris that may clog the water
filter. If the water line requires purging after the cases are
hooked together, it is not necessary to check each one.
Simply shut ball valves to each humidity system, remove
the water line from the last case in the flow, and purge. By
doing this as a precautionary measure, you may avoid
problems and repeat servicing.
START-UP
Turn on the fan circuit. Check to see if the fan for the
humidity system is running. Remove the right hand bottom
pan (when facing the front of the case), then the TXV cover.
The fan is located up against the right hand side of the
case, as viewed from the front, under the fan plenum (see
diagram). View the blade, and make sure the fan rotation
agrees with the air flow arrows. Turn on the water, by
turning the ball valve in the direction of the flow (OFF is
at 90° to the direction of flow).
After a few minutes, check the spray header by sliding the
honeycomb to the left to expose the discharge tube located
on the right hand side of the case (when viewed from the
rear), by lifting the 4'-0" section of honeycomb with both
ends, until the bottom clears. Pull up and set aside. The
spray header will be exposed. Grasp the header and pull it
loose from the 90° “L” until you see the misting nozzle,
which should be spraying. If not, check the following:
1. Make sure the water is feeding the nozzle.
2. Remove the nozzle, and purge the water.
IGSV-ASCS-0303
3. Check strainer at entrance to nozzle.
Reinsert the header into the 90° “L”, making sure that the
nozzle is in the center of the pipe when totally inserted,
and the holes in the header are facing the front of the case
at a level angle.
The discharge tube can easily be pulled to service.
MAINTENANCE
•Clean humidity system a minimum of every 90 days for
proper system operation.
1/8" 100 X 1/8FPT
SW ADAPTER
225-01-3220
SPRAY HEADER
RUNS LENGTH OF CASE
REAR INTERIOR WALL OF CASE
VIEWED FROM FRONT
WATER
SUPPLY
1/4"MPT X 1/4" OD
COMP ADAPTER
225-01-1312
BALL VALVE
HAMMON
225-01-2026
HAGO-M1 NOZZLE
225-01-3221
1/4"MPT X 1/4" COMP PVC ADAPTER
225-01-2026
WATER FILTER
3 STAGE #00015
225-01-2026
HUMIDITY SYSTEM as viewed from the front.
Note: The axial fans included in the humidity system must be
replaced as a unit.
1/4" 100 X 1/8FPT
SW ADAPTER
225-01-2089A
2ND FAN USED
IN 12' CASE
1/4" OD X 1/8" FPT
SW ADAPTER
225-01-3059
1/8" MPT X 1/4" COMP
PVC ADAPTER
225-01-3059
PAN AND ACCESS PANEL
3" AXIAL FAN
225-01-2026
Refrigeration
REFRIGERANT TYPE
The standard refrigerant will be R-22 unless otherwise
specified on the customer order. Check the serial plate
on the case for information.
PIPING
The refrigerant line outlets are located under the case.
Locate first the electrical box, the outlets are then on the
same side of the case, but at the opposite end. Insulate
suction lines to prevent condensation drippage.
REFRIGERATION LINES
LIQUID SUCTION
1/2" 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.
P-traps (oil traps) at the base of all suction line vertical
Install
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.
CONTROL SETTINGS
See the “Case Specs” section of this guidebook for the
appropriate settings for your merchandiser. Maintain these
parameters to achieve near constant product
temperatures. Product temperature should first be
measured in the morning, after having been refrigerated
overnight. For all multiplexing, defrost should be time
terminated. Defrost length and frequency should as
directed in the Case Specifications section of this guide.
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.
10
Rev.0303
ACCESS TO TX VALVES AND DRAIN LINES
MECHANICAL - Remove product from case. Remove pans.
TX valve (mechanical only) and drain are located under the
pans within the case.
ELECTRONIC - The electronic expansion valve master and
slave cylinder(s) are located within the electrical access
panel(s) in the rear of case. Rear panels lift up and out.
NOTE: Duplex receptacles must be detached before
removing rear panels.
ELECTRONIC EXPANSION VALVE (OPTIONAL)
A wide variety of electronic expansion valves and case
controllers can be utilized. Please refer to EEV and
controller Hussmann’s 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.
THREE THERMOSTATIC EXPANSION VALVES
ALCO balanced port expansion valves are furnished as
standard equipment, unless otherwise specified 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 fixture is within 10°F of its expected
operating temperature.
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.
3. The difference is superheat.
5. Set the superheat for 5°F - 7°F.
T-STAT LOCATION
T- Stats are located in the electrical section; behind the rear
panel, on the right-hand side of the case (facing the back of
the case).
T-Stat
Electrical Raceway
After case has been brought to
running temperature, tighten glass screws
along clamshell.
MEASURING THE OPERATING SUPERHEAT
1. Determine the suction pressure with an accurate
11
Electrical
WIRING COLOR CODE
GREEN GROUND
PURPLE ANTI-SWEAT
ORANGE LIGHTS
YELLOW RECEPTACLE
RED / BLACK T-STAT /SOLENOID230V
BLACK / WHITET-STAT / SOLENOID 115V
BROWN FAN MOTORS
CASE MUST BE GROUNDED
NOTE: Refer to label affixed to case to determine the actual
configuration as checked in the “TYPE INSTALLED” boxes.
ELECTRICAL CIRCUIT IDENTIFICATION
Standard lighting for all models will be full length fluorescent
lamps located within the case at the top.
The switch controlling the lights, the plug provided for digital
scale, and the thermometer are located at the rear of the case
mullion.
The receptacle that is provided on the exterior back of these
models is intended for computerized scales with a five amp
maximum load, not for large motors or other high wattage
appliances. It should be wired to a dedicated circuit.
CASE-TO CASE CONNECTORS
HUSSMANN/CHINO now provides “CASE-TO-CASE”
locking electrical connector fittings on the ASCS service cases.
These connectors greatly simplify field installation thereby saving
time and electrical installation costs.
NOTE: The total case electrical draw must not exceed
30 Amps ampacity at 115V in one connected lineup.
IGSV-ASCS-0303
BEFORE SERVICING
Always Disconnect Electrical
Power at the Main Disconnect
when servicing or replacing any
electrical component.
This includes (but not limited to) Fans, Heaters,
Thermostats, and Lights.
FIELD WIRING AND SERIAL PLATE AMPERAGE
Field wiring must be sized for component amperes printed
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 refrigeration
thermostats. Most component amperes are listed in the
“Case Specs” section, but always check the serial plate.
BALLAST LOCATION
Ballasts are located within the access panel that runs the
length of the rear of the case. Refer to diagram on page 6.
WIRING AND SERIAL PLATE AMPERAGE
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 refrigeration thermostats.
Most component amperes are listed in the "Case Specs" section,
but always check the serial plate.
ELECTRICAL SERVICE RECEPTACLES
(WHEN APPLICABLE)
The receptacles located on the exterior of the
merchandiser are intended for scales and lighted displays.
They are not intended nor suitable for large motors or
other external appliances.
ASHRAE COLOR CODE
NOTE: All other manufacturers; no known sensor codes
Case Control Systems
Manufacturer ® > EIL CPC
Location
Coil Inlet
Coil Outlet
Discharge Air
Return Air
Defrost Term.
Liquid Line
SENSOR COLORS
Color
Part#
Color
Part#
Color
Part#
Color
Part#
Color
Part#
Color
Part#
Blue Blue
225-01-1755 225-01-3255
Red Red
225-01-1757 225-01-3123
Green Green
225-01-1756 225-01-3260
Purple Green
225-01-1758 225-01-3260
White Orange
225-01-0650 225-01-3254
White Blue
225-01-0650 225-01-3255
12
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