Please fill in the following information for your NEW unit, carefully
read the instructions in this manual and file it for future reference.
MODEL NO.
SERIAL NO.
PURCHASED FROM
INSTALL DATE
1-800-523-7138
Continental Refrigerator
A Division of National Refrigeration
& Air Conditioning Products, Inc.
539 Dunksferry Road
Bensalem, PA 19020-5908
P 215-244-1400
F 215-244-9579
www.continentalrefrigerator.com
Page 2
TABLE OF CONTENTS
Page
Receiving Your New Model ............................................................................................................. 3
Uncrating Your New Model.............................................................................................................. 3
General Information and Important Operating Facts ................................................................................ 3
Serial Data Tag .......................................................................................................................................................3
Installation and Location ................................................................................................................ 4
Door Latch and Lid Lock .......................................................................................................................................7
Latch Adjustment and Lock Replacement ..............................................................................................................7
Dial Thermometer and Calibration .........................................................................................................................7
Cold Wall Refrigeration System and Adjustment ...................................................................................................8
Forced Air Refrigeration System and Adjustment ..................................................................................................8
Removal of Top Assembly .....................................................................................................................................9
General Preventative Maintenance .........................................................................................................................10
Care and Cleaning of Stainless Steel ................................................................................................ 11
Parts and Service ........................................................................................................................ 12
Placing a Service Call ............................................................................................................................................12
Obtaining Replacement Parts Under Warranty ......................................................................................................12
Obtaining Replacement Compressor Under Warranty ...........................................................................................12
Digital Thermometer and Calibration .....................................................................................................................13
Troubleshooting and Servicing Guide ................................................................................................ 14
Congratulations on your purchase of Continental Refrigerator’s
superior milk cooler! When your shipment arrives, thoroughly
examine the packaging for any punctures, dents, or signs of
rough handling. It is in your best interest to partially remove
or open the shipping container to examine the contents for
any missing accessories or concealed damage which may have
occurred during shipment. If the cabinet is damaged, it must
be noted on the carrier’s delivery slip or bill of lading. A Freight
Claim must be filed with the shipping company. FREIGHT
DAMAGE IS NOT COVERED UNDER WARRANTY.
UNCRATING YOUR NEW MODEL
The shipping carton should remain on your cabinet to protect
against dents or scratches while transporting to the actual
set-up location. Remove the shipping container only at the last
possible moment by using a pry bar to take out all the staples
from around the bottom of the crate. Slide the cardboard carton
up and off the unit, being careful not to rub against the cabinet.
Remove any accessories or boxes on the skid or in the cabinet.
Dispose of all packaging materials properly.
GENERAL INFORMATION AND
IMPORTANT OPERATING FACTS
This manual has been compiled to aid in the installation, operation and maintenance of your new equipment. Please take the
time to read it and familiarize yourself with your equipment and
its operation, to enjoy optimum performance.
Continental Refrigerator offers a variety of accessories for your
model (see “Optional Accessories” section towards the back of
this manual or contact your dealer for more information).
SERIAL DATA TAG
A serialized data tag is permanently attached to the inside righthand wall of your unit. (see Figure 1). In addition to identifying
the specific product, this label provides important information
regarding electrical requirements and refrigeration charge, as
well as agency listings and factory contacts.
FIGURE 1: Data Tag
Your milk cooler comes with the casters pre-installed. Two
(2) bolts secure the cabinet to the wooden skid. The bolts are
located at each end on the underside of the cabinet. Using a ¾”
socket or open end wrench, remove the bolts. You can now lift
the cabinet off the skid, or carefully knock the wood supports off
each end of the skid and roll your milk cooler off.
IMPORTANT NOTE: Do not under any circumstances, lay
your new model on its front or sides. For a brief period
of time, you may lay the cabinet on its back, but only
when it’s properly blocked so as not to crush the back
or end panels and also to allow provision for your hands,
in order to set it in its upright position without damaging
the cabinet. Do not plug in and operate model for at
least three (3) hours after cabinet is set upright from
being on its back as this can damage the compressor.
IMPORTANT NOTE: The model and serial number should
be noted on the front cover of this manual, in the spaces
provided. If parts or service are ever needed for your unit,
this information will be required to verify warranty status
and to properly identify any parts that may be needed.
All cabinets must be given sufficient time to reach normal
operating temperature before placing any pre-chilled milk inside
cabinet. Approximately 1 hour of operation is required to lower
the cabinet temperature to 38°F(4°C). During pull-down, doors
and lids should be kept closed(see “Operation” section for further information).
OPERATIONS MANUAL
3
Page 4
MILK COOLERS FORCED AIR & COLD WALL
IMPORTANT NOTE: It is strongly recommended that
top lids and doors be kept in the closed position when
the unit is not in use or between rush periods. This is
extremely important during the summer months and in
hot kitchens. Do not keep the top lids and doors open for
prolonged periods of time and never operate forced air
models for longer than four hours with lids and doors
open as evaporator coil can ice and may have to be
manually defrosted.
Prior to factory shipping, all products are performance-run
tested for a minimum of 12 hours providing a highly sophisticated temperature recording exclusive to each individual
cabinet. This recording is supplied within this manual packet. A
final evaluation, including analysis of cabinet performance, leak
check, vibration, noise level and visual examination is made by
a qualified quality control team to assure a superior product.
The carrier signs to this effect when they accept the product for
shipping. To insure the maximum in safety and sanitation, all
models are listed under the applicable standards of Underwriters
Laboratories and the National Sanitation Foundation.
INSTALLATION AND LOCATION
Before moving the cabinet to its final point of installation, measure all doorways or passages to assure sufficient clearance.
provided. Your model has been designed to operate only
with the casters supplied. Do not at any time obstruct the
area below the grill in the front or rear of the cabinet in
any way, and never place or store anything inside of the
cabinet machine compartment. These rules are essential
for maximum cooling capacity and long life of refrigeration parts.
FLOOR DRAINS AND LOADS
Your milk cooler should be located over top of, or close to, a
building floor drain. The floor should provide level positioning,
be free of vibration and strong enough to support the total combined weights of your new model plus the maximum product
load which might be placed into it. Keep in mind that all the
weight is concentrated at the casters.To estimate the possible
product weight, assume that each cubic foot of storage space
weighs approximately 35 pounds. Multiply 35 pounds by the
amount of cubic feet in the cabinet to obtain the product load
weight.
For example, a 20 cubic foot refrigerator can hold approximately
700 pounds of product (35 x 20). Assuming the cabinet itself
weighs 300 pounds, the total combined weight of cabinet and
product is approximately 1000 pounds. Therefore, the floor in
this example must be able to support up to 1000 pounds.
VENTILATION
The final location site of your forced air or cold wall refrigerator
must provide a large quantity of cool, clean air. All refrigeration
systems operate most efficiently and trouble-free with cool,
dry air circulation. Avoid locations near heat and moisture
generating equipment including ovens, cooking ranges, fryers,
dishwashers, steam kettles, etc., or in direct sunlight (where
temperatures can exceed 100°F). Do not select a location in an
unheated room or area where temperatures may drop below
55°F. Air supply to the condensing unit is equally important.
Restricting the air places an excessive heat load on the condensing unit and adversely affects its operation.
IMPORTANT NOTE: To assure maximum operating
efficiency, your new cabinet should be located where an
unrestricted air supply can be circulated to the condensing unit. For optimum performance, a minimum clearance of 3” on each side and rear of the cabinet should be
CABINET CLEAN OUT DRAIN AND HOSE
All forced air and cold wall models contain a 1” diameter clean
out drain with a drain stopper and 3’ long ¾” ID drain hose. The
floor drain is located on the bottom right hand floor in the storage compartment. The external drain connection and hose are
accessible behind either the front or rear grill (see Figure 3 for location). A flexible hose, attached to the drain line under the
cabinet, is located behind the front grill, toward the right hand
side (see Figure 3). The clean out drain hose should be routed
directly to a building floor drain. Never place the hose in the condensate pan of your milk cooler. The hose must be positioned
safely so any liquid flows directly into the floor drain and does
not spill onto the floor, to avoid any tripping or slipping hazards.
4
OPERATIONS MANUAL
Page 5
MILK COOLERS FORCED AIR & COLD WALL
MILK COOLER COMPONENTS
[COLD-WALL MODEL SHOWN]
MILK COOLER COMPONENTS
[FORCED-AIR MODEL SHOWN]
IMPORTANT NOTE: It is very important that your milk
cooler is properly level during operation. If it is not level,
doors won’t close properly and gaskets won’t provide a
good seal, which will cause your unit to run excessively.
Excess ice will accumulate inside the cabinet, around the
door openings and on the forced air evaporator coil. If
allowed to continue, ice will eventually block the coil and
the refrigeration system won’t be able to maintain proper
temperature, resulting in loss of product stored inside. In
addition, a cabinet that is not level will allow condensation water to overflow the pan and spill into the storage
compartment.
FIGURE 2: Milk Cooler Components (Forced Air Models)
TOP ASSEMBLY
(REMOVED)
EVAPORATOR COIL
[FORCED-AIR ONLY]
TEMP. CONTROL
[FORCED-AIR]
HINGED LID
LATCH
LATCH
KEEPER
FANS
[FORCED-AIR]
LOCK
JOINING
STRIP
EVAPORATOR CONDENSATE REMOVAL
(Forced Air Models)
All forced air models have a built-in electric condensate vaporizer located on the underside of the cabinet (see Figure 3) and
are completely self-defrosting. To clean the vaporizer, disconnect the power by unplugging the cabinet power cord from the
supply. Remove the front grill by taking out the 2 screws at
each end. Gently pull the grill forward, away from the cabinet,
being careful not to damage the tubing from the thermometer
to the sensing bulb. The electric vaporizer is provided with a
cord, that must be securely plugged into the proper receptacle
on the control box.
IMPORTANT NOTE: It is extremely important to ensure
the condensate pan is plugged into the receptacle labeled
“vaporizer” and that the condensing unit is plugged into
the receptacle labeled “condensing unit.” DO NOT connect the floor drain to the condensate pan. The electric
vaporizer is provided to eliminate condensation moisture
only. Placing the floor drain hose in the electric vaporizer
will create unsanitary and unpleasant odors. Water from
the floor drain will also overflow the condensate pan and
spill onto the floor, creating unsafe conditions.
Prior to start-up and before placing any product inside of your
cabinet, the interior should be thoroughly cleaned. Washing
with a mild soap and warm water solution is recommended
for removing dirt and grime from the surfaces of your cabinet.
This should be followed by cleaning with a baking soda solution
(three (3) tablespoons of baking soda to each quart of warm
water). Rinse thoroughly with clear water and dry with a clean,
soft cloth.
IMPORTANT NOTE: Never use harsh detergents, cleaners, scouring powders or chemicals when cleaning your
model. Failure to dry the interior surfaces after cleaning
may result in a streaking or staining of the metal.
Complete cleaning procedures and precautions are listed in the
(“Periodic Cleaning Procedure” under “Maintenance”).
START-UP PROCEDURE
ELECTRICAL CONNECTIONS
To insure proper operation, your new model must be connected
to an individual circuit that can supply the full voltage as stated
on the cabinet serial data plate. For correct voltage, power draw,
and wire accommodations, check the data on the serial data
plate located on the inner right wall of your new model. Verify
that this information exactly matches the electrical characteristics at the installation location. An electrical wiring diagram,
located on the inside compressor compartment rear, next to
the electrical console box, should also be consulted during
connection. For reference, a copy of each electrical wiring diagram is located towards the back of this manual (see “Wiring Diagrams” section).
Refrigeration compressors are designed to operate within
+/-10% of the rated voltage indicated on the cabinet serial
plate. Excessively high or low supply power can burnout the
compressor. This can be easily detected and will void the factory warranty. Full voltage at the correct rating, on a separate,
designated circuit, not affected by the operation of other electrical appliances, must be available to the refrigeration unit at all
times. Extension cords should never be used on commercial
equipment, as they can overheat and/or result in low voltage.
GFI/GFCI RECEPTACLES
Building codes in some areas may require certain 115 volt
receptacles to be protected by a Ground-Fault Circuit Interrupter
(GFCI or GFI). These devices are not recommended for most
commercial refrigerators and freezers, since nuisance trips can
occur (typically due to moisture) causing temporary loss of
power. This may result in intermittently high storage temperatures and potentially unsafe food product. If you decide to connect your equipment to a GFCI protected receptacle, a properly
sized, commercial grade circuit breaker should be used on a
separate, designated power supply. Alternatively, a qualified
electrician may be able to hard wire your equipment, eliminating the need for a GFCI device. Contact Continental’s Service
Department before making any modifications to your cabinet,
to avoid loss of warranty coverage.
NOTE: GFCI DEVICES ARE NOT RECOMMENDED.
PRODUCT LOSS AND/OR PROBLEMS RESULTING FROM
NUISANCE TRIPS OR CONNECTION TO A DEFECTIVE
OR IMPROPER POWER SUPPLY, ARE NOT COVERED
UNDER WARRANTY. UNAUTHORIZED MODIFICATIONS
TO YOUR EQUIPMENT OR THE POWER CORD CAN
CAUSE AN ELECTRICAL HAZARD AND WILL VOID THE
FACTORY WARRANTY.
115 VOLT, 60 HZ, 1 PHASE CONNECTION
All 115 volt models are provided with a factory
installed, UL approved 15-amp power cord and
NEMA 5-15P plug, or a 20-amp cord with a
NEMA 5-20P plug. To insure proper operation,
this equipment must be plugged into a NEMA
compatible, grounded receptacle that can supply the full voltage and amperage stated on the
serial plate (see Figure 1).
IMPORTANT NOTE: A SEPARATE, ISOLATED, PROPERLY
SIZED POWER SUPPLY MUST BE PROVIDED. GFCI
DEVICES AND/OR EXTENSION CORDS SHOULD NOT
BE USED. PRODUCT LOSS, AS WELL AS PROBLEMS
RESULTING FROM NUISANCE TRIPS OR HIGH/LOW
VOLTAGE, ARE NOT COVERED UNDER WARRANTY.
SPECIAL VOLTAGE CONNECTIONS
When models are ordered from the factory with special, optional
voltages, connections should be made as required on the
electrical wiring diagram provided on the inside compressor
compartment rear next to the electrical console box.
6
OPERATIONS MANUAL
Page 7
MILK COOLERS FORCED AIR & COLD WALL
DOOR LATCH & LID LOCK
MILK COOLER
START-UP CHECKLIST
After your unit has been installed and power connected in
accordance with this manual, please take time to check the following before loading product, to assure trouble-free operation:
Cabinet location suitable and unit is level
(see “Installation and Location”)
Seperate power supply with correct voltage
(see “Electrical Connections”)
Drain hose routed to floor drain
(see “Installation and Location”)
Vaporizer connected
(see “Evaporator Condensate Removal”)
Doors and lids close and seal properly
(see “Door Latch and Lid Lock”)
Cold Wall Models: Correct cabinet temperature
(see “Cold Wall Refrigeration System and Adjustment”)
Forced Air Models: Correct cabinet temperature
(see “Forced Air Refrigeration System and Adjustment”)
Refrigeration lines free of kinks and vibration
(see “Refrigeration System
All packaging discarded and cabinet cleaned
(see “Periodic Cleaning”)
The system should run smoothly and quietly in accordance with
generally accepted commercial standards. If any unusual noises
are heard, turn the unit off immediately and check for obstructions of the condenser or evaporator fans. Fan motors, blades,
and housings can be jarred out of position through rough handling in transit.
DOOR LATCH AND LID LOCK
To open your milk cooler, unlock the lid by turning the key so
the cam disengages from the keeper (see Figure 4). Lift the lid
and slowly rotate it back, so it rests against the bumpers. Locate
the door latch on the interior side wall. Lift up on the front of
the latch and rotate it back, to disengage it from the keeper.
The door will now freely rotate down. Lower it gently so it rests
against the front bumpers. To close, lift the door back into place
and rotate the latch to engage the keeper. Close the lid by rotating forward and lower it into place, so the clips engage into the
accepters at each end of the door.
NOTE: The lid clips and accepters secure the door, so
it cannot be opened until after the lid is unlocked and
opened. Always close the door before closing the lid.
FIGURE 4: Door Latch and Lid Lock
LID
LID
CLIP
NUT
CAM
SCREW
CLIP
ACCEPTER
KEY
LOCK
TUMBLER
CAUTION: IF POWER IS DISCONNECTED FOR ANY
REASON, ALLOW 5 MINUTES FOR THE SYSTEM TO
EQUALIZE BEFORE TURNING THE UNIT BACK ON.
DISREGARDING THIS PROCEDURE MAY CAUSE AN
OVERLOAD AND PREVENT THE UNIT FROM OPERATING!
OPERATION
All cabinets must be given sufficient time to reach normal
operating temperature before placing pre-chilled product inside.
Milk coolers are designed to maintain a cabinet temperature of
38° to 40°F (3.3° to 4.4°C). Approximately 1 hour of operation
is required to reach this temperature. During pull-down, doors
and lids should be kept closed. Due to the open design and use
of milk coolers, it is normal for condensation to periodically
form around the door and lid seams and hinges.
DOOR LATCH
RIGHT SIDE
LOCK KEEPER
DOOR
LATCH KEEPER
OF CABINET
LATCH ADJUSTMENT AND LOCK REPLACEMENT
If the lid or door does not close properly, check alignment of
the clips on underside of the lid and the accepters inside the
door (see Figure 4). To adjust, loosen the screws, move clip or
acceptor to position desired and retighten the screws. Use the
same method to adjust the latch keeper if needed. To remove
the lid lock, start on the inside. Use a large philips screwdriver
to turn the lock screw counter-clockwise to loosen it. Remove
the screw and cam. Use a large wrench to turn the nut counterclockwise and remove it. From outside the lid, pull the tumbler
out of the hole. To replace the lock, reverse the above steps.
OPERATIONS MANUAL
7
Page 8
MILK COOLERS FORCED AIR & COLD WALL
DIAL THERMOMETER AND CALIBRATION
Your NSF-approved dial thermometer has a remote sensing
bulb, located in the refrigerated compartment. The display
features a large 2” diameter face, with any easy to read scale
that shows the internal cabinet temperature in Fahrenheit (°F)
and Celsius (°C). Blue (safe) and red (caution) color bands
provide a quick, visual indication of the temperature inside your
refrigerator. The thermometer is pre-calibrated at the factory, to
accurately show the cabinet temperature.
To check the accuracy of your thermometer, place a pre-calibrated
temperature sensing device in the
center of the refrigerated compartment and keep the door closed for at
least 10 minutes. The thermometer
should read the same temperature
as the sensing device, within +/-2°F
(+/- 1°C). If it does not, use a small
straight-blade screwdriver to carefully pry the clear lens cover from the
thermometer body as shown (see Photo A).
Place the screwdriver tip in the slotted center screw on the
thermometer face. Carefully hold the needle pointer and turn the
center screw clockwise to lower or counterclockwise to increase
the desired temperature, as shown (see Photo B). Replace the
lens cover and recheck the calibration.
COLD WALL REFRIGERATION SYSTEM
AND ADJUSTMENT
All self-contained “cold wall” milk cooler refrigerators are
designed and factory set to maintain an average cabinet temperature of 36°F. The temperature control is located behind the
front grill (see Figure 3). Remove the front grill by taking out
the 2 screws at each end. Gently pull the grill forward, away
from the cabinet, being careful not to damage the tubing from
the thermometer to the sensing bulb. . If an adjustment is
necessary to maintain the above temperature range only, place
a screwdriver into the bottom thermostat adjustment screw
(see Figure 5) labeled “Cut-In” and turn clockwise for a colder
cabinet temperature or counterclockwise for a warmer cabinet
temperature. Note that adjusting a cabinet too cold (below the
“Cut-In” setting of 30°F) could result in freezing your product
over long periods of time. Further adjustments out of the factory
design temperature range must be made by a qualified refrigeration mechanic only. The cold wall system operates by wall
temperatures reaching below freezing (approximate wall temperature is 20°F) and should periodically be manually defrosted
to minimize wall ice accumulation. To manually defrost your
milk cooler, unload all product and place it in a refrigerated storage unit. Keep the lids and doors open, and disconnect power
to the cabinet (by unplugging the power cord) for approximately
30 minutes allowing the frost to melt and drain to the floor drain.
Care should be taken not to scrape and potentially puncture the
wall since the refrigeration tubing is located behind the wall and
could be damaged.
IMPORTANT NOTE: During manual defrost, be sure to
connect your floor drain to a drainage destination.
FIGURE 5: Cold Wall Thermostat
DANFOSS
RANCO
CUT-IN
(Factory Set to 37°F)
DIFFERENTIAL
(Set to Min. Value)
FORCED AIR REFRIGERATION SYSTEM
AND ADJUSTMENT
All self-contained “forced air” milk cooler refrigerators are
designed and factory set to maintain an average cabinet temperature of 36°F. Due to the open-type design and use of milk coolers, it is normal for condensation to periodically form around
the door and lid seams and hinges, particularly if the temperature has been set too cold. If moisture becomes excessive
check, the control settings. The temperature control is located
inside the cabinet product compartment, on the interior top left
air distribution grill as shown in Figure 2. If an adjustment is
necessary to maintain the above temperature range only, place
a screwdriver into the thermostat slot and turn clockwise for a
colder cabinet temperature or counterclockwise for a warmer
cabinet temperature. PLEASE NOTE that turning the control
completely counterclockwise will turn “off” the refrigeration
compressor, as it is an “off” position. Further adjustments
out of the factory design temperature range must be made by a
qualified refrigeration mechanic only.
8
OPERATIONS MANUAL
Page 9
MILK COOLERS FORCED AIR & COLD WALL
TOP REMOVAL
(Double Service Model)
FORCED AIR MILK COOLER
REMOVAL OF TOP ASSEMBLY
(Forced Air Models Only)
The top assembly can be removed, by a qualified technician,
to access the evaporator coil, fans and related components
(see Figure 6). Removal and replacement will require a philips
screwdriver, razor knife, tube of NSF-approved silicone sealant and a silicone gun. To begin, open the front door and lid.
Remove the lid hinge screws from the top assembly. On single
access models, remove the joiner strip and screws from the
back of the cabinet (see Figure 3). For dual access models,
remove the screws from the hinges on the back Llid (see Figure 4). Set the lid(s), hinges and other parts aside. Use a
razor knife to carefully score the silicone seal around the base
of the top assembly. BE EXTREMELY CAREFUL to avoid cutting
yourself or scratching your milk cooler. From inside the storage
compartment, remove screws from the underside of the top
assembly. Gently lift the top assembly straight up and off the
cabinet. To reattach the top, clean all excess sealant, reverse the
above steps and use silicone to provide an airtight seal between
the top and cabinet.
FIGURE 6: Forced Air Top Removal
(Dual Access Model Shown)
BUMPER
HINGE
FRONT
LID
FRONT DOOR
(SHOWN
OPEN)
TOP ASSEMBLY
SILICONE
SEALANT
BACK LID
IMPORTANT NOTE: All refrigerators are designed with
an automatic, “off-cycle” defrost system. Defrosting
occurs automatically when the compressor is not operating during an off-cycle. Do not set the thermostat where
the cabinet temperature will fall below 34°F because the
evaporator will become blocked by ice since the compressor off-cycle will be considerably shortened. This
will result in loss of product stored within the cabinet and
require service to defrost the evaporator and re-adjust the
thermostat, which is not covered under warranty.
CAUTION: ON ALL “FORCED AIR” AND “COLD WALL”
MODELS, IT IS STRONGLY RECOMMENDED THAT TOP
LIDS AND DOORS BE KEPT CLOSED WHEN THE UNIT
IS NOT IN USE OR BETWEEN RUSH PERIODS. THIS
IS EXTREMELY IMPORTANT DURING THE SUMMER
MONTHS AND IN HOT KITCHENS. DO NOT KEEP THE TOP
LIDS AND DOORS OPEN FOR PROLONGED PERIODS OF
TIME AND NEVER OPERATE FORCED AIR MODELS FOR
LONGER THAN FOUR HOURS WITH LIDS AND DOORS
OPEN AS EVAPORATOR COIL CAN ICE AND MAY HAVE
TO BE MANUALLY DEFROSTED.
INTERIOR ACCESSORIES
The standard interior accessory package that is supplied from
the factory with your milk cooler model consists of an epoxycoated, steel wire floor rack (see Figure 2) which sits on the
interior stainless steel floor (MC5 models receive two) with the
legs facing down, as shown. A rubber stopper is also provided
for the floor drain.
BACK
DOOR
BUMPER
OPERATIONS MANUAL
9
Page 10
MILK COOLERS FORCED AIR & COLD WALL
MAINTENANCE
SAFETY PRECAUTIONS
WHEN OPERATING ANY APPLIANCES: DISCONNECT
THE POWER CORD BEFORE ATTEMPTING TO WORK
ON OR CLEAN EQUIPMENT. DO NOT ATTEMPT TO
REMOVE ANY COVERS OR PARTS YOURSELF, AS
THIS CAN EXPOSE DANGEROUS, HIGH VOLTAGE
WIRING. SERVICE SHOULD ONLY BE PERFORMED BY
A QUALIFIED TECHNICIAN. ALWAYS ROUTE POWER
CORDS AWAY FROM AREAS WHERE THEY CAN BE
WALKED ON OR DAMAGED BY OTHER EQUIPMENT.
NEVER USE EXTENSION CORDS OR PLUG MORE THAN
ONE APPLIANCE INTO THE SAME CIRCUIT. THIS CAN
OVERLOAD THE POWER AND RESULT IN ELECTRICAL
SHOCK OR FIRE. YOUR APPLIANCE IS EQUIPPED WITH
A POLARIZED, GROUNDED POWER PLUG. NEVER
ATTEMPT TO REMOVE THE GROUND POST OR USE
A NON-POLARIZED ADAPTER, WITHOUT PROPERLY
GROUNDING THE EQUIPMENT. IF A REPLACEMENT
PART IS REQUIRED, ALWAYS INSIST ON FACTORY
AUTHORIZED COMPONENTS.
PERIODIC CLEANING PROCEDURE
It is always best to clean your refrigerator or freezer when the
product load in your cabinet is as its lowest level. To clean the
interior or exterior cabinet surfaces, follow these procedures:
1. Disconnect your cabinet from its power supply, remove all
refrigerated product and temporarily move it to a walk-in or
other refrigerated storage unit.
2. Roll your milk cooler to a location over a floor drain, open
all doors and lids to allow the cabinet to reach room temp-
erature. Remove the floor racks and the drain plug stopper
from inside and wash them with a baking soda and warm
water solution, rinse thoroughly with clean water. Dry all
accessories completely with a soft clean cloth.
3. Once the cabinet has reached room temperature, wash all
inside and outside surfaces with a solution of warm water
and mild detergent. Pay particular attention to the face of
the cabinet, as any residue or debris can impair the door
seal. For slightly more difficult cleanups, ammonia or vin egar and warm water can be used. Rinse thoroughly with
clear water and dry with a soft clean cloth. Carefully wash
all door gaskets with clean water, dry them and check for
any damage, which may affect the seal. Failure to dry sur faces completely may cause water stains or streaking.
4. Replace the drain stopper, place the floor racks properly in
position and, reconnect the power. Wait at least 1 hour
before reloading product into your unit.
PRECAUTIONS
NEVER USE HARSH DETERGENTS, CLEANERS,
SCOURING POWDERS, OR CHEMICALS WITH BLEACH
WHEN CLEANING YOUR UNIT.
GENERAL PREVENTATIVE MAINTENANCE
The most important thing you can do to maintain any refrigerator or freezer and extend its life, is to keep the condenser clean.
Performance of the air-cooled condensing unit, located under
the cabinet, depends exclusively upon the amount of air passing
through the condenser fins. Your refrigerator or freezer will run
more efficiently, consume less energy, and provide a maximum
of trouble-free service throughout its lifetime if the condenser is
kept clean and an adequate supply of clean, cool air is provided
at all times. Periodically (at least once a month) inspect the
condenser coil, which is located directly behind the rear grill, to
check for debris or blockage (see Figure 3).
If the condenser coil is dirty or blocked, disconnect the cabinet
power supply and using a stiff brush, wipe away any dirt from
the condenser fins until the condenser is clear from any debris.
Using a vacuum cleaner with a brush attachment may aid in
this cleaning process. After cleaning, restore electrical service
to your model.
CAUTION: CONDENSER FIN PLATES ARE MADE FROM
THIN METAL AND HAVE SHARP EDGES. ALWAYS
WEAR GLOVES. USE CAUTION WHEN WORKING ON
OR AROUND THE CONDENSING UNIT TO PREVENT
CUTS AND AVOID DAMAGING FINS, TUBING AND
OTHER COMPONENTS. FAILURE TO PROPERLY CLEAN
THE CONDENSER REGULARLY WILL CAUSE EXESSIVE
COMPRESSOR LOAD, REDUCING THE PERFORMANCE
AND EFFICIENCY OF YOUR UNIT. THIS CAN RESULT IN
PREMATURE FAILURE AND VOID YOUR WARRANTY.
10
OPERATIONS MANUAL
Page 11
MILK COOLERS FORCED AIR & COLD WALL
CARE AND CLEANING OF STAINLESS STEEL*
*Some information and graphics for this section were obtained from “Stainless
Steel Equipment Care and Cleaning” brochure, published by the North American
Association of Food Equipment Manufacturers (NAFEM).
Contrary to popular beliefs, stainless steel can rust, if not properly cared for and maintained (That’s why it’s called stain-LESS
steel, not stain-PROOF steel.)
All steel is primarily made of
iron. Stainless steels contain
other metals, such as chromium and nickel, that provide
an invisible film on the surface of the steel that acts as
a shield against corrosion.
As long as this invisible layer
is intact and not broken or
contaminated, the metal will
retain its corrosion protection
and remain stain-less.
DO NOT USE: abrasive
cleaners, chemicals with
chlorides or muriatic
acid to clean your
equipment.
3. HARD WATER causes spots and stains on stainless steel
surfaces, particularly when it is heated. Find out the hardness of your water and treat it properly, if needed. Use a
water filter and softeners if you have hard water. Club soda
can be used to remove streaks or spots.
There are 3 basic things that can break down the protective
layer on your stainless steel, which must be avoided:
1. MECHANICAL ABRASION is caused by things that
scratch the surface of the metal. Only use soft cloths or
plastic scouring pads to clean and always scrub in the
same directions as the metal grain.
DO NOT USE: steel pads, wire brushes, scrapers or
knives to clean your equipment.
2. CHLORIDES are found in water, salt, food and worst
of all, many cleaners. Only use chloride-free, alkalinebased, non-abrasive cleaners. Always rinse thoroughly
with cool, clean water and dry with a soft towel. A solution of 1 tablespoon baking soda mixed with 1 pint water
can be used to remove tough stains.
DO NOT USE: hot or hard water to clean stainless steel.
CLEAN YOUR STAINLESS STEEL REGULARLY using the proper
tools and cleaners. After cleaning, always rinse, rinse, rinse
thoroughly with cool, clean, clear water.
CHECK ALL OF YOUR EQUIPMENT PERIODICALLY. If you see
any signs of rust, clean the area immediately, with a plastic
scrubbing pad. If surface rust is removed promptly, permanent
corrosion, pits and cracks may be avoided. Special stainless
steel polishes, that can help restore the protective coating on
your equipment, are available from a variety of retailers.
IMPORTANT: If these recommendations are not followed,
the protective film on your stainless steel can break down
and your equipment may begin the long walk down the
dark road of corrosion.
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MILK COOLERS FORCED AIR & COLD WALL
PARTS AND SERVICE
Continental is committed to providing the best customer service
in the industry. All new units come with a Limited Extended
Protection Warranty (see “Warranty” section of this manual for
details). If a problem arises with your equipment, please contact
our Service Department at 1-800-523-7138 (extension 3301,
3302, or 3303). One of our Service Specialists will do everything
possible to solve the problem as quickly as possible.
ITEMS NOT COVERED UNDER WARRANTY INCLUDE, BUT ARE
NOT LIMITED TO:
• Preventative maintenance: cleaning condenser
coils and other components.
• Consumables: light bulbs, door gaskets, batteries.
General hardware adjustments: cabinet leveling,
casters/legs, doors/hinges.
• Problems due to: inadequate installation or supply
power; improper maintenance, operation, or abuse.
• Compressor failure due to: dirty condenser, insuffi-
cient clearance/ventilation, excessive temperatures.
• System adjustments and calibrations, including:
controls, thermometer and expansion valves.
OBTAINING REPLACEMENT
PARTS UNDER WARRANTY
If replacement parts are required for a unit under warranty,
contact Continental’s Service Department. New parts will be
sent from the factory and, when applicable, a Return Goods
Authorization (RGA) will be issued to return old parts. The RGA
number must appear on the packaging of any parts returned, or
they will not be accepted. If a service agent uses a part from their
stock, Continental will replace it with a factory part.
OBTAINING REPLACEMENT
COMPRESSOR UNDER WARRANTY
If the compressor should fail within the first twelve (12) months
of use, or within twenty (20) months from the date code on the
compressor, an “over-the-counter” exchange must be made
at an authorized Copeland, Danfoss, Embraco, or Tecumseh
wholesaler.
After the first year, the compressor motor is covered under an
extended “parts only” warranty. The customer is responsible for
any labor charges and any additional parts that may be required.
Contact the Service Department to obtain a replacement compressor through one of the following methods:
Consult the Table of Contents in the front of this manual for detailed information on the items listed above.
Contact Continental’s Service Department with any
additional questions.
PLACING A SERVICE CALL
In order to receive prompt service, always be prepared to provide your: cabinet model and serial number; cabinet location
name and date installed; contact name and phone number; plus
a description of the problem.
During normal business hours (Monday to Friday, 8am to 5pm
Eastern) contact the Service Department at: 1-800-523-7138
(extension 3301, 3302, or 3303) prior to any warranty service work being performed.
After normal business hours, or on weekends, notify our Service
Department by sending an email to: jcadwallader@nrac.com,
or leaving a voice message at: 1-800-523-7138 (extension
3301). Be sure to provide the information listed above. Contact
Continental the following business day, during normal business
hours, to verify the status of your call.
• Continental will supply a replacement compressor
at no charge and pay for regular freight. (If expedited freight is requested, the end user, dealer or
service agent is responsible for additional charges and must provide credit card information.
• A compressor can be purchased locally and
Continental will either replace the stock unit with
a new factory compressor, or offer an allowance
towards the purchase of a replacement compressor, up to: $100 for 1/5hp to 1/3hp; $250 for
1/2hp to 3/4hp; $350 for 1hp to 2hp.
The data tag from the defective compressor (or compressor model, serial number and date code, if the tag cannot be
removed) must be included with any reimbursement request.
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MILK COOLERS FORCED AIR & COLD WALL
OPTIONAL ACCESSORIES
Continental offers a variety of accessories for your unit.
DIGITAL THERMOMETER AND CALIBRATION
The optional digital thermometer has a remote sensing bulb,
located inside the cabinet on the left-hand wall. The easy to read
LED display is calibrated at the factory to accurately show temperature at the center of the refrigerated compartment. While in
transit, your cabinet will be subjected to more jarring and vibration than at any other time, and the thermometer may require
adjustment at start-up.
Milk coolers are designed to maintain 38° to 40°F (3.3° to
4.4°C). During periods of heavy use, when doors are opened
repeatedly or remain open for an extended period, or if warm
product is loaded into the cabinet, the temperature displayed
may temporarily exceed the “normal” range. This is common, as
warm air outside the cabinet mixes with cold air inside. If your
thermometer continues to display temperature above “normal”
range, close the doors, make sure they seal tight and keep them
closed for at least 30 minutes. If a high temperature is still
displayed, check the thermometer by placing a pre-calibrated
temperature sensing device in the center of the refrigerated
compartment and keep the doors closed for at least 15 minutes.
The thermometer display should read the same temperature as
the sensing device, within +/-2°F (+/-1°C). If it does not, follow
the instructions below to calibrate the thermometer display, by
adjusting the offset value as required.
Once you see this, press on the front lower left to decrease
temperature displayed, or on the upper left section to increase
temperature displayed. After adjusting the offset, press the right
center of the front display again to exit calibration mode. Wait 10
to 15 seconds for the cabinet temperature to appear and recheck
the display calibration.
For example, if sensing device in the cabinet reads 38° and
thermometer displays 41°, press on the front right of the display
twice to show the current offset value. Then press the lower left
of the display three times to decrease offset by 3°. (If the original
offset value displayed was “0”, then “-3” will appear.)
NOTE: The buttons need to be pressed without delay
between actions. Contact the factory with any questions.
IMPORTANT NOTE: It is extremely important to ensure
the condensate pan is plugged into the receptacle labeled
“vaporizer” and that the condensing unit is plugged into
the receptacle labeled “condensing unit.”
To calibrate, press on the right center of the front display twice
(see photo). After the first press, “CAL” will appear (unit is in
Calibration mode). After the second press, the temperature offset value (-30 to 30) will appear.
Press here for
calibration modePress here to increase temp.
Press here to decrease temp.
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TROUBLESHOOTING GUIDE
PROBLEMPROBABLE CAUSECORRECTION
Condensing unit will not
start - no hum.
Condensing unit will not
start - hums but trips on
overload protector.
Condensing unit starts
and runs, but short
cycles on overload
protector.
Condensing unit starts,
but fails to switch off of
“start” winding.
Condensing unit runs,
but short cycles on:
Condensing unit runs,
but for prolonged periods or continuous.
1. Line disconnected, switch open.
2. Fuse removed or blown.
3. Overload protector blown.
4. Control “Off” due to cold location.
5. Control stuck in open position.
6. Wiring improper or loose.
1. Improperly wired.
2. Low voltage to unit.
3. Starting capacitor defective.
4. Relay failing to close.
5. Compressor motor has a shorted or open
winding.
6. Internal mechanical trouble in compressor.
7. Insufficient air supply.
1. Additional current passing through overload
protector.
2. Low voltage unit.
3. Overload protector defective.
4. Run capacitor defective.
5. Excessive discharge pressure.
6. Excessive suction pressure.
7. Insufficient air supply.
1. Improperly wired.
2. Low voltage to unit.
3. Relay failing to open.
4. Run capacitor defective.
5. Excessively high discharge pressure.
6. Compressor motor has a shorted or open
winding.
7. Internal mechanical trouble in compressor.
1. Overload protector.
2. Thermostat.
3. High pressure cut-out due to:
(a) Insufficient air supply.
(b) Overcharge.
(c) Air in system.
4. Low pressure cut-out due to:
(a) Valve leak.
(b) Undercharge.
(c) Restriction in expansion device.
1. Shortage of refrigerant.
2. Control contacts stuck closed.
3. Excessive heat load placed into cabinet.
4. Prolonged or too frequent door openings.
5. Evaporator coil iced.
6. Restriction in refrigeration system.
7. Dirty condenser.
8. Filter drier clogged.
MILK COOLERS FORCED AIR & COLD WALL
1. Close start or disconnect switch.
2. Replace Fuse.
3. Determine reason and correct/replace.
4. Relocate control.
5. Repair or replace control.
6. Check wiring against diagram.
1. Check wiring against diagram.
2. Determine reason and correct.
3. Determine reason and replace.
4. Determine reason and replace.
5. Replace compressor.
6. Replace compressor.
7. Clear condenser and allow compressor
to cool down.
1. Check wire diagram. Check for added
components connected to wrong side of
overload protector.
2. Determine reason and correct.
3. Check current, replace protector.
4. Determine reason and replace.
5. Check ventilation, restrictions in cooling
medium or refrig. system.
6. Check for misapplication.
7. Clear condenser and allow compressor
to cool down.
1. Check wiring against diagram.
2. Determine reason and correct.
3. Determine reason and replace.
4. Determine reason and replace.
5. Check discharge shut-off valve, possible
overcharge.
6. Replace compressor.
7. Replace compressor.
1. Check current, replace protector.
2. Differential setting must be widened.
3.
(a) Check air supply to condenser.
(b) Evacuate and re-charge.
(c) Evacuate and re-charge.
4.
(a) Replace, evecuate and re-charge.
(b) Evacuate and re-charge.
(c) Replace expansion device.
1. Fix leak, evacuate and re-charge.
2. Clean contacts or replace control.
3. Allow unit sufficient time for removal of latent
heat.
4. Plan or organize schedule to correct condition.
5. Defrost evaporator coil.
6. Determine location and remove.
7. Clean condenser coil.
8. Replace, evacuate and re-charge.
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MILK COOLERS FORCED AIR & COLD WALL
TROUBLESHOOTING GUIDE
PROBLEMPROBABLE CAUSECORRECTION
Start capacitor open,
shorted or blown.
Run capacitor open,
shorted or blown.
Relay defective or blown
out.
Product zone
temperature too high.
Suction line frosted or
sweating.
Liquid line frosted, cold
or sweating.
Noisy condensing unit.1. Loose parts or mounting.
Thermometer reads
different than actual
temperature.
Water leak inside unit.1. Condensate drain pan not installed properly.
Doors misaligned.1. Shifted during shipping.1. Refer to Operation Manual for hinge
1. Relay contact not opening properly.
2. Prolonged operation on start cycle:
(a) Low voltage to unit.
(b) Improper relay.
(c) Starting load too high.
3. Excessive short cycling.
4. Improper capacitor.
1. Improper capacitor.
2. Excessively high line voltage, over 110%
of rated maximum.
1. Incorrect Relay.
2. Incorrect mounting angle.
3. Voltage too low or too high.
4. Excessive short cycling.
5. Loose or vibrating mounting position.
6. Incorrect run capacitor.
7. Loose wiring on relay or overload.
1. Control setting too high.
2. Inadequate air circulation.
3. Dirty condenser.
1. Overcharge of refrigerant.
2. Evaporator fan not running.
3. Expansion valve stuck open.
4. Expansion valve superheat too low.
1. Restriction in drier strainer.
2. Liquid line service valve partially closed.
2. Tubing rattle or vibration.
3. Bent fan blade causing excessive vibration.
4. Fan bearings worn.
1. Calibration.
2. Defective.
2. Unit not level.
3. Drain pan misaligned.
4. Defective drain pan.
1. Clean contacts or replace relay.
2.
(a) Determine reason and correct.
(b) Replace with correct relay.
(c) Correct by using pump down.
3. See “Condensing Unit Short Cycles” above.
4. Determine correct size and replace.
1. Check size and replace.
2. Determine reason and correct.
1. Check relay and replace.
2. Remount relay in correct position.
3. Determine reason and correct.
4. See “Condensing Unit Short Cycles” above.
5. Remount rigidly.
6. Replace with proper capacitor.
7. Tighten all wiring screws.
1. Adjust T-stat.
2. Rearrange product load to improve air
circulation.
3. Clean condenser coil.
1. Evacuate and re-charge.
2. Determine reason and correct.
3. Clean valve, evacuate and re-charge.
4. Adjust superheat to required setting.
1. Replace drier, evacuate and re-charge.
2. Open valve fully or replace if necessary.
1. Tighten all mounting parts and shroud cover.
2. Reform tubing to be free of contact.
3. Replace fan blade.
4. Replace fan motor.
1. Consult Operations Manual and calibrate.
2. Replace.
1. Consult Operations Manual for install
instructions.
2. Make sure unit is level or pitched back slightly.
3. Make sure drain pan is aligned properly.
4. Replace.
adjustment.
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MILK COOLERS FORCED AIR & COLD WALL
MILK COOLERS (FORCED AIR & COLD WALL MODELS)
WD-R5 WIRING DIAGRAM 115/60/1
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MILK COOLERS FORCED AIR & COLD WALL
THREE (3) YEAR PARTS AND LABOR WARRANTY
Continental Refrigerator warrants to the original purchaser of every new Continental Refrigerator self contained unit, including all parts thereof, that such equipment is
free from defects in material and workmanship, under normal use, proper maintenance and service as indicated by Continental Refrigerator installation and operation
manual, for a period of three (3) years from the date of installation, or thirty-nine (39) months from the date of shipment from the manufacturer, whichever comes
first. Normal wear type parts, such as light bulbs/lamps and gaskets are not covered by this warranty. For the purpose of this warranty, the original purchaser shall be
deemed to mean the individual or company for whom the product was originally installed.
Continental Refrigerators obligation under this warranty shall be limited to repairing or replacing, including labor, any part of such product which proves thus defective.
Continental Refrigerator reserves the right to examine any product claimed to be defective. The labor warranty shall be for self-contained units only and for standard
straight time, which is defined as normal service rate time, for service performed during normal working hours. Any service requested outside of a servicer’s normal
working hours will be covered under this warranty for the normal rate and any additional overtime rate will be the responsibility of the equipment purchaser.
Any part determined to be defective in the product should be returned to the company within thirty (30) days under the terms of this warranty and must be accompanied
by the cabinet model, serial number, and identified with a return material authorization number, issued by the manufacturer.
Special installation/applications, including remote locations, are limited in coverage by this warranty. Any installation that requires extra work, and/or travel, to gain
access to the unit for service is the sole responsibility of the equipment purchaser.
Improper operation resulting from factors, including but not limited to, improper or negligent cleaning and maintenance, low voltage conditions, inadequate wiring, and
accidental damage are not manufacturing defects and are strictly the responsibility of the purchaser.
Condenser coils must be cleaned at regular intervals. Failure to do so can cause compressor malfunction and will void warranty. Continental Refrigerator recommends
a minimum monthly cleaning, as stated in the installation and operation manual.
ADDITIONAL TWO (2) YEAR COMPRESSOR PART WARRANTY
In addition to the warranty set forth above, Continental Refrigerator warrants the hermetically/semi-hermetically sealed compressor (part only) for an additional two (2)
years beyond the first three (3) year warranty period; not to exceed sixty-three (63) months from the date of shipment from Continental Refrigerator, provided upon
receipt of the compressor, manufacturer examination shows the sealed compressor to be defective. This extended warranty does not cover freight for the replacement
compressor or freight for return of the failed compressor. Also, this extended compressor-part only warranty does not apply to any electrical controls, condenser,
evaporator, fan motors, overload switch, starting relay, capacitors, temperature control, filter/drier, accumulator, refrigeration tubing, wiring harness, labor charges, or
supplies which are covered by the standard warranty above.
THE FOREGOING WARRANTIES ARE EXPRESSLY GIVEN IN LIEU OF ALL OTHER WARRANTIES, EXPRESS, IMPLIED, OR STATUTORY, INCLUDING THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, WHICH ARE HEREBY DISCLAIMED, ALONG WITH ALL OTHER OBLIGATIONS OR
LIABILITIES ON OUR PART. AND WE NEITHER ASSUME, NOR AUTHORIZE ANY OTHER PERSON TO ASSUME FOR US, ANY OBLIGATION OR LIABILITY IN CONNECTION WITH THE SALE OF SAID REFRIGERATION UNITS OR ANY PARTS THEREOF.
This warranty shall not be assignable and shall be honored only in so far as the original purchaser.
This warranty does not apply outside the limits of the United States of America and Canada, nor does it apply to any part that has been subject to misuse, neglect,
alteration, accident, or to any damage caused by transportation, flood, fire, acts of terrorism, or acts of God.
IN NO EVENT SHALL CONTINENTAL REFRIGERATOR BE LIABLE FOR CONSEQUENTIAL, SPECIAL OR PUNITIVE DAMAGES. THE REMEDIES OF PURCHASER SET
FORTH HEREIN ARE EXCLUSIVE AND THE TOTAL LIABILITY OF CONTINENTAL REFRIGERATOR, WHETHER BASED ON CONTRACT, WARRANTY, NEGLIGENCE, INDEMNIFICATION, STRICT LIABILITY, TORT, OR OTHERWISE, SHALL NOT EXCEED THE PURCHASE PRICE OF THE COMPONENT UPON WHICH LIABILITY IS BASED.
CONTINENTAL REFRIGERATOR SHALL HAVE NO OBLIGATION OR LIABILITY FOR CONSEQUENTIAL OR SPECIAL DAMAGES, INCLUDING BUT NOT LIMITED TO
INDIRECT, PUNITIVE DAMAGES, LOSS OF USE, LOSS OF PRODUCT, DOWNTIME OR LOST PROFITS, ARISING OUT OR, RELATED TO OR CONNECTED IN ANY WAY
WITH THE PRODUCT OR ITS USE.
A Division of National Refrigeration & Air Conditioning Products, Inc.