Instruction manual | Continental Refrigerator Refrigerators and Freezers Refrigerator User Manual

Operation, Installation and
Instruction Manual
for
Reach-In
Refrigerators and Freezers
Continental Scientific
A Division of National Refrigeration & Air Conditioning Products, Inc.
539 Dunksferry Road · Bensalem, PA 19020-5908
215-244-1400 · 1-800-523-7138 · Fax: 215-244-9579
Operators Manual
Table of Contents
Page
RECEIVING YOUR NEW MODEL........................................................................ 1
GENERAL INFORMATION AND IMPORTANT OPERATING FACTS ................. 1
UNCRATING YOUR NEW MODEL ...................................................................... 2
INSTALLATION AND LOCATION ........................................................................ 2
CLEARANCES........................................................................................... 2
VENTILATION ........................................................................................... 2
FLOOR LOADS.......................................................................................... 3
INSTALLING LEGS AND LEVELING REACH-IN MODELS ...................... 4
MOUNTING ROLL-IN MODELS IN PLACE AND LEVELING .................... 4
INSTALLING CASTERS AND LEVELING REACH-IN MODELS............... 5
INSTALLING CONDENSATE EVAPORATOR .......................................... 6
REMOVAL OF DOORS AND DOOR ADJUSTMENT ................................ 7
REMOVAL OF GRILL ................................................................................ 8
INITIAL CLEANING PROCEDURE ...................................................................... 8
START-UP PROCEDURE .................................................................................... 9
ELECTRICAL CONNECTIONS ................................................................. 9
115 VOLT, 60 HZ, 1 PHASE CONNECTION............................................. 9
208-230 VOLT, 60 HZ, 1 PHASE CONNECTION...................................... 9
SPECIAL VOLTAGE CONNECTIONS .................................................... 10
START-UP CHECKLIST .......................................................................... 10
REMOTE APPLICATIONS....................................................................... 10
OPERATION....................................................................................................... 11
THERMOMETER CALIBRATION ............................................................ 11
CALIBRATION CHECK ................................................................. 11
DIAL THERMOMETER ................................................................. 11
DIGITAL THERMOMETER ........................................................... 12
REFRIGERATOR SYSTEM AND ADJUSTMENT ................................... 13
FREEZER SYSTEM AND ADJUSTMENT ............................................... 14
DEFROST OPERATION ............................................................... 15
EVAPORATOR ASSEMBLY.................................................................... 16
LOW-PROFILE,CEILING-MOUNT EVAPORATOR
ASSEMBLY ........................................................................ 16
INTERIOR REACH-IN ACCESSORIES................................................... 17
SHELVING INSTALLATION.......................................................... 17
OPTIONAL INTERIOR ACCESSORIES ....................................... 18
SAFETY PRECAUTIONS ........................................................................ 19
MAINTENANCE.................................................................................................. 20
PERIODIC CLEANING PROCEDURE..................................................... 20
SLIDING AND HINGED GLASS .............................................................. 21
GENERAL PREVENTATIVE MAINTENANCE......................................... 21
PARTS AND SERVICE............................................................................ 22
TROUBLESHOOTING AND SERVICING GUIDE .............................................. 22
WIRING DIAGRAMS .......................................................................................... 26
RECEIVING YOUR NEW MODEL
Congratulations on your recent purchase of Continental Scientific superior
laboratory/pharmacy equipment products! When your shipment arrives, please
thoroughly examine the shipping crate for any punctures, dents, or signs of rough
handling. It is in your best interest to partially remove or open the shipping
container in order to examine the model for any concealed damages which may
have occurred during shipment. If the model is damaged, it must be noted on the
delivering carrier's delivery slip or bill of lading (see "filing a damage claim" under
warranty section).
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 all of the
material in order to become more familiar with your equipment and its operation,
and enjoy optimum performance.
Important Note: All automatic defrost freezers have an energy-saving fan
delay control to prevent the interior fans from operating until the evaporator coil
becomes chilled. Therefore, on initial start-up, the fans will not turn on immediately.
This is a normal mode of operation. Allow sufficient time for the evaporator coil
to reach its operating temperature (approximately 20 minutes).
No floor drains or plumbing connections are required since all models are
completely self-defrosting and use an automatic defrost condensate water
evaporating system (see "condensate evaporator installation" under installation
and location section).
All cabinets must be given sufficient time to reach normal operating temperature
before placing any product inside. For refrigerators, approximately 2 hours of
operation are required to lower the cabinet temperature to 4 degrees c. Freezers
require approximately 4 hours of operation to lower the cabinet temperature to -20
degrees c (see "operation" section for further information).
Never overload top shelf with product so as to block or restrict cabinet airflow.
Doing so will result in poor performance, decrease in efficiency and possible need
for service to de-ice evaporator.
Prior to factory shipping, all models are performance run tested for a minimum of
12 hours providing a highly sophisticated temperature analysis recording exclusive
to each individual cabinet. This recording is supplied within this manual packet. A
final leak check, vibration, noise level and visual examination is made by a
qualified quality control team to assure a quality product. The carrier signs to this
effect when he accepts the product for shipping. To insure the maximum in safety
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and sanitation, all models are listed under the reexamination service of
underwriter's laboratories.
UNCRATING YOUR NEW MODEL
The shipping container should remain on your model as protection against dents
or scratches while transporting it to the actual set-up location. Remove the
shipping container only at the last possible moment by following these simple
steps:
1. Using a pry bar, pry off and remove crate end bottom staples.
2. Pry off and remove crate front and rear bottom staples.
3. Slide crate upward and remove it, being careful not to rub against cabinet.
There are up to four (4) bolts securing the cabinet to the wooden skid. The bolts
are located at each end on the underside of the skid. In order to remove these
bolts it is advisable to tilt the cabinet backwards and place wooden blocks at each
end in order to hold it in its tilted position. Using a 3/4" socket or open end wrench,
remove the bolts and carefully slide the model off of the skid. After skid removal,
the cabinet should never be moved without dollies or rollers to avoid damage to
the cabinet bottom or floor.
Important Note: Do not under any circumstances lay your new model on its
front or sides. Only for a brief period, may you lay the model on its back and only
then, when its properly blocked so as not to crush the condensate drain tubing and
also to allow provision for your hands in order to set it in its upright position without
inflicting damage to 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 damage
could result to the compressor.
INSTALLATION AND LOCATION
CLEARANCES
Before moving the cabinet to its final point of installation, accurately measure all
doorways or passages to assure clearance. If additional clearance is needed,
cabinet doors and grill can be easily removed (see instructions outlined in "removal
of doors" and "removal of grill" sections).
VENTILATION
The final location site of your air cooled refrigerator or freezer must be able to
provide a large quantity of cool, clean air. The refrigeration system operates most
efficiently and trouble-free with cool, dry air circulation. Avoid locations near heat
and moisture generating equipment as well as direct sunlight where temperatures
can be in excess of 100 degrees f. Also, do not select a location in an unheated
room or area where temperatures may drop below 55 degrees f. Air supply to the
condensing unit is equally important. Restricting the air supply will place an
excessive heat load on the condensing unit and adversely effect its operating
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efficiency.
Important Note: To assure sufficient air supply and circulation to the
condensing unit, a minimum clearance of 12" above the grill and 3" on each
side and back of the cabinet must be provided (see figure 1). If necessary,
special venting or air supply ducts must be installed by the installer for this
purpose. Do not at any time obstruct the grill area in front of the cabinet in any
way, and never place or store anything on top of the cabinet machine
compartment. These rules are essential for maximum cooling capacity and long
life of refrigeration parts.
FIGURE 1
MINIMUM CLEARANCE DIMENSIONS
FLOOR LOADS
The floor at the final location site must be level, 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. A fully loaded reach-in or roll-in model
may reach 2,000 - 3,000 pounds. To estimate the possible product load 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 and obtain the
product load weight. For example, a 20 cubic foot refrigerator can hold
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approximately 700 pounds of product (35 x 20) and assuming the refrigerator itself
weighs 300 pounds, the total combined weight of cabinet and product is
approximately 1000 pounds. Therefore, the floor in this example must be capable
of supporting up to 1000 pounds.
INSTALLING LEGS AND LEVELING REACH-IN MODELS
Your new reach-in model is supplied with adjustable type legs for leveling
purposes. Each single and two section model has four leg mounting holes on its
case bottom, and three section models have six leg mounting holes. Legs are
packed in the accessory carton from which they must be removed and installed on
the cabinet case bottom (see figure 2). In order to install the legs, carefully tip the
cabinet rearward adding four (4) 2" wood blocks underneath and simply screw the
threaded leg studs into the case bottom front leg holes. Repeat this procedure by
tilting the cabinet in the opposite direction and install the remaining legs. Make
sure the legs are tightened extremely well or the entire model will sway or rock with
each opening or closing of the doors, possibly causing damage to the case
bottom. This procedure should be performed close to the final installation site and
allow access to the rear of the cabinet for condensate evaporator installation (see
"condensate evaporator installation" under installation and location section).
To assure your cabinet is level, all legs are equipped with bullet-type leveling bolts.
These bolts can be turned by hand or by wrench, clockwise or counterclockwise to
level the cabinet.
FIGURE 2
LEG INSTALLATION
MOUNTING ROLL-IN MODELS IN PLACE AND LEVELING
Your new roll-in model is designed and constructed to be mounted directly on the
floor without legs or casters. The floor must be level and the base of the cabinet
should be sealed to the floor around its entire perimeter. If the floor is not level, it
must be made level prior to mounting your roll-in model.
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Your roll-in model comes with one cart ramp per door opening. To install the
ramp(s), simply open the cabinet door and position the ramp slots onto the screws
located along the cabinet bottom front. If the door wiper rubs along the ramp to the
extreme where the door will not self-close, you will need to adjust the door (see
"door adjustment" section) or level the cabinet as explained above.
Important Note: It is extremely important that your new reach-in or roll-in
model is perfectly level for proper operation. If it is not level, the following
adverse conditions will become apparent:
1. The door(s) will not be properly aligned and consequently will not provide a
good seal. Roll-in door wiper(s) may bind.
2. Your model will run excessively due to improper door seal(s).
3. An excessive amount of ice will accumulate inside the cabinet, around the
door opening(s) and especially on the finned evaporator coil. If allowed to
continue, ice will eventually block the coil and the model will fail. This will result
in the loss of all product stored within the cabinet.
4. Defrost water will fail to drain properly and will overflow the evaporator coil
drain pan and into the cabinet of both refrigerator and freezer models.
INSTALLING CASTERS AND LEVELING REACH-IN MODELS
If you wish to install casters on your new reach-in model, follow the steps above for
"installing legs" to install the casters, making sure again that the casters are
tightened extremely well (see figure 3). If the casters are not installed tightly, the
cabinet will sway or rock with each opening or closing of the doors, possibly
causing damage to the case bottom.
To assure that your cabinet is level, caster cups must be installed under the
casters which need leveling. Caster cups are not provided with your new model but
can be purchased at most hardware or furniture stores. Do not attempt to level
casters by unscrewing them from the case bottom as this will cause damage
to the cabinet bottom and leg hole threads, voiding all warranties.
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FIGURE 3
CASTERS MUST BE TIGHT TO CABINET BOTTOM
INSTALLING CONDENSATE EVAPORATOR
No floor drains or plumbing connections are required since all models use an
automatic condensate water evaporating system. All models are supplied with an
electric condensate evaporator pan and mounting bracket packed in the accessory
carton. To install the condensate pan on models, remove both mounting screws
located on the bottom of the cabinet back and install the mounting bracket on the
case bottom as shown in figure 4. Slide the condensate pan onto the bracket,
install the drain tube into the pan making sure it is not blocked or kinked, and plug
the ten foot power cord into the receptacle labeled "vaporizer" located on the case
top electrical box.
Important Note: It is extremely important to be sure that the condensate
pan is plugged into its correct receptacle labeled "vaporizer" and that the
condensing unit is plugged into its correct receptacle labeled "condensing
unit".
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FIGURE 4
CONDENSATE EVAPORATOR INSTALLATION
REMOVAL OF DOORS AND DOOR ADJUSTMENT
During installation, it may become necessary to remove the cabinet doors to
facilitate passage through narrow doorways or hallways. To remove a door, pry off
all hinge covers using a sharp tool or knife (see figure 5). Swing the door to the
open-door position (90 degrees) and carefully lift the door upward, removing the
door from the hinge bodies. If it is necessary to remove the hinge bodies from the
cabinet face, be extremely careful not to lose the light switch pin located inside all
top hinge bodies. To reinstall the door, reverse the above procedure.
All doors have been aligned at the factory, however vibration during transportation
may cause doors to shift and realignment may be necessary. If the door(s)
require realignment, proceed as follows:
1. Pry off all hinge covers using a sharp tool or knife.
2. For each door, loosen the screws which secure the hinge bodies to the cabinet
face and slide the door into alignment. Hold the door firmly in place and tighten
all screws securely.
If the door gasket(s) do not seal properly to the cabinet face and there are
gaps between the gasket and the face on the hinge edge, proceed as
follows:
1. For each door, loosen all screws which are directed into the edge of the door
and push the door towards the cabinet eliminating the gap. Hold the door
firmly in place and tighten all screws securely.
2. Replace all snap-on hinge covers.
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FIGURE 5
DOOR ADJUSTMENT AND REMOVAL
REMOVAL OF GRILL
To remove the grill, loosen all four (4) grill mounting screws located on the
backside of the grill one or two turns. Simply lift grill up off of its mounting screws
and out. To replace the grill, line up the grill mounting screws with the keyhole slots
located on the cabinet body, push in on the grill and down.
Important Note: If the model is provided with a digital or dial thermometer, the
front grill cannot be completely removed from the cabinet without first removing the
thermometer bulb from inside the cabinet. However, enough capillary tubing and/or
wiring cable has been provided to allow the grill to be laid across the top of the
cabinet after it has been removed. Take care not to damage the capillary tubing
when handling the grill.
If it is necessary to remove the thermometer bulb from inside of the cabinet, first
locate the thermometer bulb cover and remove the thumbscrews securing it in
place. The thermometer bulb cover is located on the interior top left corner towards
the front of the cabinet. Once the cover is removed, carefully grasp the bulb and
push it back through the cabinet hole. The thermometer bulb and grill can now be
removed from the cabinet. When reinstalling the thermometer bulb, be sure to
replace the permagum sealant around the hole after inserting the bulb.
INITIAL CLEANING PROCEDURE
Prior to start-up and before placing any product inside of your new reach-in or rollin laboratory model, the interior of the cabinet should be thoroughly cleaned.
Washing with a mild soap and warm water solution is recommended for cleaning
the aluminum and stainless steel 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
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cleaning may result in a streaking or staining of the metal.
Complete cleaning procedures and precautions are listed in the "periodic cleaning
procedure" under the maintenance section.
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 upper cabinet end panel next to the
electrical console box, should also be consulted during connection.
Important Note: The condensing unit supplied with all self-contained models is
designed to operate with a voltage fluctuation of + 10 % of the voltage indicated on
the cabinet serial data plate. Full voltage of the correct service, on an individual
line not affected by the operation of other electrical appliances, must be available
to the condensing unit at all times. Burnout of the compressor due to
exceeding the high or low voltage limits is easily detected and will
automatically void the factory warranty.
115 VOLT, 60 HZ, 1 PHASE CONNECTION
All 115 volt models are provided with a U.L. approved power cord and polarized
plug which is factory installed.
Warning: Any alterations to this cord and plug could cause an electrical
hazard and will void the factory warranty.
To insure proper operation, this equipment must be plugged into a NEMA 5-15R
compatible, grounded receptacle that can supply the full voltage as stated on the
serial data plate.
208-230 VOLT, 60 HZ, 1 PHASE CONNECTION
All 208-230 volt models are to be permanently connected and are provided with
four (4) field wiring leads which exit the electrical console box located in the
machine compartment behind the front grill. The cabinet circuitry is 115 volts and
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the condensing unit is 208-230 volts in which the wiring includes a neutral and a
mechanical ground. This wiring should be connected to the appropriate power
source by a qualified electrician and must conform to all local electrical codes.
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 upper cabinet end panel next to the electrical console box.
START-UP CHECKLIST
After your model has been installed, leveled, cleaned, and electrically connected in
accordance with this manual, please take the time before start-up to observe the
following precautions to assure troublefree operation:
1. Check that all exposed refrigeration lines are free of severe dents or kinks.
2. Check the condenser fan and evaporator fans for freedom to rotate without
any obstructions
3. Make sure that the cabinet is properly leveled (see "leveling" under
installation and location section).
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 any obstructions of the condenser or evaporator fans.
Fan motors, fan blades, or fan housings can be jarred out of position through
rough handling in transit or during installation.
Important Note: All freezer models have an energy-saving fan delay control to
prevent the interior fans from operating until the evaporator becomes chilled.
Therefore, on initial start-up, the fans will not turn immediately. This is a normal
mode of operation. Allow sufficient time for the evaporator coil to reach its
operating temperature (approximately 20 minutes).
Caution: If unit is unplugged or disconnected for any reason, allow several
minutes (5-6 minutes) before turning the unit back on to allow the system
pressures to equalize. Disregarding this procedure could cause an overload and
prevent the unit from operating.
REMOTE APPLICATIONS
All models are available for purchase as remote models in which case the
condensing unit is purchased separately and installed at the time of installation. All
remote models are equipped with an expansion valve located within the evaporator
coil housing, and both liquid and suction lines stubbed and extending out from the
cabinet case top behind the front grill. Installation of the refrigeration accessories,
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condensing unit, and electrical hook-up should be performed by qualified
refrigeration personnel of a competent refrigeration company only.
OPERATION
All cabinets must be given sufficient time to reach normal operating temperature
before placing any product inside. Refrigerators are designed to maintain an ideal
cabinet temperature of 3.3`c to 4.4`c (38`f to 40`f) and approximately 2 hours of
operation are required to reach this temperature. Standard freezers are designed
to maintain an ideal cabinet temperature of -18.9`c to -20.0`c (-2`f to -4`f) and
approximately 4 hours of operation are required to reach this temperature. Low
temperature freezers are designed to maintain an ideal cabinet temperature of 26.7`c to -27.8`c (-16`f to -18`f) and approximately 6 hours of operation are
required to reach this temperature.
THERMOMETER CALIBRATION
After your new model has been given sufficient time to pull down to the above
specified temperature range, the exterior thermometer located on the upper grill
must be checked for calibration accuracy. All thermometers are carefully
calibrated at the factory prior to shipping but may be vibrated out of calibration
through rough handling in transit, shipping vibration, or during installation.
CALIBRATION CHECK
To check calibration, an accurate, mercury thermometer (within the temperature
range of your model) must be placed inside of the cabinet on the center shelf for at
least 15 minutes without any door openings. At this time, note the temperature on
the exterior cabinet thermometer, quickly open the door and compare it to the
interior thermometer's temperature. Whatever the difference (if any) is the amount
the exterior thermometer must be adjusted.
The adjustment procedure varies depending on which thermometer is equipped
with your model (see figure 5).
DIAL THERMOMETER
For a dial thermometer, carefully pry the clear plastic lens cover from the
thermometer body using a slotted screwdriver. To adjust the needle, hold the
center hub stationary using a small slotted screw driver and very carefully grasp
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and turn the needle to the desired temperature using your fingers. Replace the
lens cover and recheck the calibration.
DIGITAL THERMOMETER
For a digital thermometer, note how many degrees the digital display needs to be
increased or decreased. Press twice directly on the mylar display towards the right
center using your finger. After pressing the first time, the display should read "cal"
indicating that you are in the calibration mode and after pressing the second time,
the display should read either zero or a positive number or a negative number (this
number is the point of origin for calibration). If your digital display needed to be
increased, you
Must advance the point of origin by that many degrees by pressing directly on the
mylar display towards the left top. If your digital display needed to be decreased,
you must decrease the point of origin by that many degrees by pressing directly on
the mylar display towards the left bottom. Once calibration is complete, return to
normal temperature mode by pressing once again on the mylar display towards
the right center. Now, recheck the calibration.
Example: the digital display reads 7`c and the internal thermometer reads 4`c so,
the digital display must be increased by 3`. Press the right center of the display
twice and the number -1 is displayed (this is the point of origin and could have
been any number). Now, press the top left of the display three times to make the 1 go to +2. Calibration is complete so press the right center of the display to return
to normal temperature mode.
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FIGURE 6
THERMOMETER CALIBRATION
REFRIGERATOR SYSTEM AND ADJUSTMENT
All self-contained refrigerators are designed and factory set to maintain an average
cabinet temperature of 4`c. The temperature control is accessible from the top of
the electrical console box located on the cabinet top behind the front grill (see
figure 6). 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.
Further adjustments out of the factory design temperature range must be made by
a qualified refrigeration mechanic only.
Important Note: All refrigerators are designed with an automatic, "off-cycle"
defrost system which means that defrosting occurs automatically when the
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compressor is not operating during an off-cycle. Do not set the thermostat too cold
where the cabinet temperature will fall below 2`c 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.
FIGURE 7
REFRIGERATOR AND FREEZER THERMOSTAT
FREEZER SYSTEM AND ADJUSTMENT
All self-contained standard freezers and low-temperature freezers are designed
and factory set to maintain an average cabinet temperature of -20`c and -28`c
respectively. All freezers are designed for the purpose of holding pre-frozen bulk
product and although they are capable of freezing small quantities of non-frozen
product, they are not to be used as fast or blast freezers. Do not attempt to freeze
bulk quantities of product. The temperature control is accessible from the top of
the electrical console box located on the cabinet top behind the front grill (see
figure 6).if an adjustment is necessary to maintain the above temperature range
only on standard freezers, place a screwdriver into the thermostat slot and turn
clockwise for a colder cabinet temperature or counterclockwise for a warmer
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cabinet temperature. On low-temperature freezers, place a screwdriver into the
right thermostat adjustment screw (do not turn the left differential adjustment
screw) and turn clockwise for a colder cabinet temperature or counterclockwise for
a warmer cabinet temperature. Further adjustments out of the factory design
temperature range must be made by a qualified refrigeration mechanic only.
DEFROST OPERATION
All freezer models are equipped with an automatic, electric defrost system
consisting of an electric evaporator coil and drain pan heater, automatic electric
defrost time clock, defrost high limit switch, and a fan delay switch. The defrost
system is time initiated by the time clock and temperature terminated by the high
limit switch. The time clock is factory preset for three (3) defrost periods per day at
eight (8) hour intervals and a fail safe cut-off time of 32 minutes. These settings
should be adequate for most conditions, however, depending upon use and
climate conditions a fourth defrost may be required.
The defrost time clock is located in the electrical console box where a window
allows access to the timer dial. To set the time of day on the defrost time clock,
turn the knob on the center dial of timer face counterclockwise as the arrows
indicate until the correct time of day is lined up with the "time" arrow on the upper
left corner of the clock (see figure 7). It will be necessary to reset the time of day
on the timer if the freezer is turned off or has loss of power. To relocate and/or add
a defrost period, simply unscrew the defrost pins located around the outer dial and
screw them into the desired time slots (an additional pin is located in a storage slot
on the right side of the dial).
Important Note: All freezers have a unique, energy-saving defrost cycle. It is
time initiated, temperature terminated, with an automatic, auxiliary time cut-off
safety to minimize electrical consumption and provide for the shortest possible
heating cycle. This safety time cut-off is factory set at 32 minutes and should not
require any further adjustment.
After defrost, the fan delay control prevents the evaporator fans from operating
until the evaporator coil has reached a temperature of 0`c (approximately 20
minutes) thus, minimizing warm air circulation inside the cabinet. Therefore, during
initial start-up, and after each defrost cycle, the fans will not turn on immediately.
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FIGURE 8
DEFROST TIMER SETTING
EVAPORATOR ASSEMBLY
All refrigerators and freezers have an easily accessible, easily serviceable,
performance rated, forced-air evaporator assembly which utilizes a plasticized fin
coil for extended life (see figure 9).
LOW-PROFILE, CEILING-MOUNT EVAPORATOR ASSEMBLY
The low-profile evaporator system is comprised of a generous sized, evenly
matched evaporator and air circulating fans contained within an easily accessible,
low silhouette, interior ceiling mounted housing.
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FIGURE 9
LOW-PROFILE,CEILING-MOUNT EVAPORATOR ASSEMBLY
INTERIOR REACH-IN ACCESSORIES
The standard interior accessory package that is supplied from the factory with your
reach-in refrigerator or freezer consists of standard pilaster strips with pilaster clips
(four (4)clips per shelf), three (3) epoxy coated shelves per section, and four (4)
epoxy coated shelves per section on glass door models only.
SHELVING INSTALLATION
Pilaster strips which support the shelving are secured to the cabinet walls with
special pilaster screws which allow the strips to be readily removed for cleaning
without the use of tools. Shelf clips are easily installed by inserting them into the
pilasters at the desired shelf location and shelf installation is as simple as placing
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the shelf on the clips as shown in figure 10. The standard pilaster and clip are
shown in figure 10, and the optional heavy-duty pilaster and clip are shown in
figure 11.
Important Note: When loading shelves with product, allow space between
rows of product for proper air circulation, and do not load product to block back
wall (leave at least 2" of air space between product and back wall).
FIGURE 10
STANDARD PILASTER
OPTIONAL INTERIOR ACCESSORIES
In addition to the optional heavy-duty pilaster and clip as shown in figure 11,
aluminum and stainless steel angle pan slides and universal angle pan slides are
available and shown in figure 12. Please consult the price list for additional
interior and exterior options and accessories available from the factory for
your model.
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FIGURE 11
OPTIONAL HEAVY-DUTY PILASTER
FIGURE 12
OPTIONAL ANGLE PAN SLIDES
SAFETY PRECAUTIONS
The following safety precautions should be followed when operating any
appliances:
¬ Always disconnect the power cord before attempting to work on or clean
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any equipment.
¬ Disconnect the power cord when the appliance will be idled for a long
period of time.
¬ Do not attempt to service this unit yourself as removing any covers may
cause exposure to dangerous voltage.
¬ Always route the power cord so that it is not likely to be walked on or
pinched by other appliances. Never use extension cords.
¬ Do not overload outlets with more than one appliance. This can result in fire
or electrical shock.
¬ Your model is equipped with a grounded and polarized plug. Do not defeat
the purpose of this plug by removing the ground post or using a nonpolarized adapter without properly grounding the outlet.
¬ Never connect any appliance to a power source while standing in water or
with wet hands.
¬ When a replacement part is required, always insist on factory authorized
parts only.
MAINTENANCE
PERIODIC CLEANING PROCEDURE
It is best to clean your refrigerator or freezer when the product load is at its lowest
level inside your cabinet. To clean the interior or exterior cabinet surfaces, the
following procedure should be followed:
1. Disconnect your model from its power supply and remove all food product from
inside.
2. Open all doors and allow the cabinet to reach room temperature. Remove all
accessories (shelves, racks, pilasters, clips, etc.) from within the model, wash
with a baking soda and warm water solution, and rinse thoroughly with clear
water. Dry all of the accessories completely with a soft clean cloth.
3. Once the cabinet has reached room temperature, wash the entire cabinet
inside and out with a baking soda and warm water solution. For slightly more
difficult cleanups, ammonia or vinegar in warm water can be used. Rinse
thoroughly with clear water and dry with a soft clean cloth. Failure to dry all
surfaces completely may cause water stains or streaking on the aluminum or
stainless steel finish.
4. Return all accessories to their respective positions and return electric supply
power to the model.
PRECAUTIONS
1. Never use harsh detergents, cleaners, scouring powders, or chemicals
when cleaning your model.
2. Strong bleaches tend to corrode many materials and should never come in
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contact with stainless steel.
3. Tincture of iodine, or iron should not come in contact with stainless steel.
These solutions, which cause stainless steel to discolor, should be rinsed
off immediately if contact occurs.
4. Gritty, hard abrasives will mar the finish of stainless steel and aluminum and
are not recommended.
SLIDING AND HINGED GLASS
All glass doors whether sliding or hinged are easily removable for cleaning.
Removal of a hinged glass door is the same as a solid door (see "removal of doors
and door adjustment" in installation and location section). To remove a sliding
door, slide it open about half way, grasp the door on both sides and lift up to clear
the bottom door track. Tilt the door out at the bottom. Use the top of the door to
ease the spring-loaded closing mechanism back to the closed position. Now, bring
the door down out of the top track. Caution should be taken so that the closing
mechanism is not allowed to spring back from the half-open position since the
spring will go past the closed position and may pop out of the top track. Should this
happen, move the closing mechanism back to the closed position.
To replace the sliding glass door, insert the door in the top track and use it to slide
the closing mechanism to the half-open position. Lift the door so it clears the
bottom track, push in to align the door with the track, and let the door down into the
track.
Important Note: The glass used in sliding or hinged glass doors is of special
sealed pane design and cannot be replaced with ordinary window or plate glass. If
it becomes necessary to replace the glass, it can be obtained directly from the
factory.
GENERAL PREVENTATIVE MAINTENANCE
Performance of the air cooled condensing unit located on the top of your new
model, depends exclusively upon the amount of air passing through the condenser
fins. Your refrigerator or freezer will run more efficiently, consume less current, 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 front top grill, to check for debris or blockage.
If the condenser coil is dirty or blocked, disconnect the power supply to your model
and using a stiff brush, brush the dirt from the condenser fins until the condenser is
clear from any debris. Using a vacuum cleaner with a brush attachment may aid in
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this cleaning process. After cleaning, restore electrical service to your model.
PARTS AND SERVICE
Always provide the cabinet model and serial number (located on the data plate on
the inside right wall of the cabinet) whenever contacting the factory or your dealer
regarding questions or when ordering parts.
MODEL #
_____________________
SERIAL #
Notes:
TROUBLESHOOTING AND SERVICING GUIDE
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PROBLEM
PROBABLE CAUSE
CORRECTION
Condensing unit will
not start - no hum.
1.LINE DISCONNECTED, SWITCH OPEN.
1.CLOSE START OR DISCONNECT
SWITCH.
2.REPLACE FUSE.
3.DETERMINE REASON AND
CORRECT/REPLACE
4.RELOCATE CONTROL.
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.
Condensing unit will
not start - hums but
trips on overload
protector.
Condensing unit starts
and runs, but short
cycles on over-load
protector.
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.
1.CHECK WIRING AGAINST DIAGRAM.
2.DETERMINE REASON AND CORRECT.
3.DETERMINE REASON AND REPLACE.
4.DETERMINE REASON AND REPLACE.
5.REPLACE COMPRESSOR.
7. INSUFFICIENT AIR SUPPLY
7. CLEAR CONDENSER & ALLOW
COMPRESSOR TO COOL DOWN
1.ADDITIONAL CURRENT PASSING THROUGH
OVERLOAD PROTECTOR.
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 & ALLOW
COMPRESSOR TO COOL DOWN
2.LOW VOLTAGE TO UNIT.
3.OVERLOAD PROTECTOR DEFECTIVE.
4.RUN CAPACITOR DEFECTIVE.
5.EXCESSIVE DISCHARGE PRESSURE.
6.EXCESSIVE SUCTION PRESSURE.
7.INSUFFICIENT AIR SUPPLY
Condensing unit
starts, but fails to
switch off of "start"
winding.
5.REPAIR OR REPLACE CONTROL.
6.CHECK WIRING AGAINST DIAGRAM.
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.
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6.REPLACE COMPRESSOR.
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.
PROBLEM
PROBABLE CAUSE
CORRECTION
Condensing unit runs,
but short cycles on:
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.
1.SEE PROBLEM # 3.
2.DIFFERENTIAL MUST BE WIDENED.
3.
(a) CHECK AIR SUPPLY TO CONDENSER.
(b) EVACUATE AND RE-CHARGE.
(c) EVACUATE AND RE-CHARGE.
4.
(a) REPLACE, EVACUATE AND RECHARGE.
(b) EVACUATE AND RE-CHARGE.
(c) REPLACE EXPANSION DEVICE.
(b) UNDERCHARGE.
(c) RESTRICTION IN EXPANSION DEVICE.
Condensing unit runs,
but for prolonged
periods or continuous.
1.SHORTAGE OF REFRIGERANT.
2.CONTROL CONTACTS STUCK CLOSED.
Start capacitor open,
shorted or blown.
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.
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.
4.IMPROPER CAPACITOR.
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.
1.CLEAN CONTACTS OR REPLACE RELAY.
2.
(a) DETERMINE REASON AND CORRECT.
(b) REPLACE WITH CORRECT RELAY.
(c) CORRECT BY USING PUMP DOWN.
3.DETERMINE REASON FOR SHORT
CYCLE,
(SEE PROBLEM #5) AND
CORRECT.
4.DETERMINE CORRECT SIZE AND
REPLACE.
Run capacitor open,
shorted or blown.
1.IMPROPER CAPACITOR.
2.EXCESSIVELY HIGH LINE VOLTAGE, OVER
110% OF RATED MAXIMUM.
1.CHECK SIZE AND REPLACE.
2.DETERMINE REASON AND CORRECT.
Relay defective or
blown out.
1.INCORRECT RELAY.
2.INCORRECT MOUNTING ANGLE.
1.CHECK RELAY AND REPLACE.
2.REMOUNT RELAY IN CORRECT
POSITION.
3.DETERMINE REASON AND CORRECT.
4.DETERMINE REASON AND CORRECT
(SEE PROBLEM # 5).
5.REMOUNT RIGIDLY.
6.REPLACE WITH PROPER CAPACITOR.
7.TIGHTEN ALL WIRING SCREWS.
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.
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PROBLEM
PROBABLE CAUSE
CORRECTION
Product zone
temperature too high.
1.CONTROL SETTING TOO HIGH.
2.INADEQUATE AIR CIRCULATION.
1.ADJUST T-STAT
2.REARRANGE PRODUCT LOAD TO
IMPROVE AIR CIRCULATION.
3.CLEAN CONDENSER COIL
3.DIRTY CONDENSER
Suction line frosted or
sweating.
1.OVERCHARGE OF REFRIGERANT.
2.EVAPORATOR FAN NOT RUNNING.
3.EXPANSION VALVE STUCK OPEN.
4.EXPANSION VALVE SUPERHEAT TOO LOW.
Liquid line frosted,
cold, or sweating.
1.RESTRICTION IN DRIER STRAINER.
2.LIQUID LINE SERVICE VALVE PARTIALLY
CLOSED.
Noisy condensing unit.
1.LOOSE PARTS OR MOUNTINGS.
2.TUBING RATTLE OR VIBRATION.
3.BENT FAN BLADE CAUSING EXCESSIVE
VIBRATION.
4.FAN MOTOR BEARINGS WORN.
1.EVACUATE AND RE-CHARGE.
2.DETERMINE REASON AND CORRECT.
3.CLEAN VALVE,EVACUATE AND RECHARGE.
4.ADJUST SUPERHEAT TO REQUIRED
SETTING
1.REPLACE DRIER,EVACUATE AND RECHARGE
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.
THERMOMETER READS
DIFFERENT THAN ACTUAL
TEMPERATURE
1.CALIBRATION
1.CONSULT OPERATIONS MANUAL AND
CALIBRATE
WATER LEAK INSIDE UNIT
1.CONDENSATE DRAIN PAN NOT INSTALLED
PROPERLY
1.CONSULT OPERATION MANUAL FOR
INSTALL INSTRUCTION
2.UNIT NOT LEVEL
2.MAKE SURE UNIT IS LEVEL OR PITCHED
BACK SLIGHTLY
2.REPLACE
2.DEFECTIVE
3.DRAIN PAN MISALIGNED
4.DFECTIVE DRAIN PAN
DOORS MISALIGNED
3.MAKE SURE DRAIN PAN IS ALIGNED
PROPERLY
4.REPLACE
1.SHIFTED DURING SHIPPING
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1.REFER TO OPERATION MANUAL FOR
HINGE ADJUSTMENT
WIRING DIAGRAMS
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