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Table of Contents
Summary of Contents for Continental Scientific Refrigerators and Freezers
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Page 1: Refrigerators And Freezers
Operation, Installation and Instruction Manual 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... -
Page 2: Table Of Contents
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... - Page 3 TROUBLESHOOTING AND SERVICING GUIDE ... 22 WIRING DIAGRAMS ... 26...
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Page 4: Receiving Your New Model
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. -
Page 5: Uncrating Your New Model
"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. -
Page 6: Floor Loads
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 - 3 -... -
Page 7: Installing Legs And Leveling Reach-In Models
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. -
Page 8: Installing Casters And Leveling Reach-In Models
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"... -
Page 9: Installing Condensate Evaporator
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. -
Page 10: Removal Of Doors And Door Adjustment
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. -
Page 11: Removal Of Grill
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. -
Page 12: Start-Up Procedure
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. -
Page 13: Special Voltage Connections
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. -
Page 14: Operation
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. -
Page 15: Digital Thermometer
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. -
Page 16: Refrigerator System And Adjustment
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). -
Page 17: Freezer System And Adjustment
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. -
Page 18: Defrost Operation
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. -
Page 19: Evaporator Assembly
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. -
Page 20: Interior Reach-In Accessories
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. -
Page 21: Optional Interior Accessories
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"... -
Page 22: Safety Precautions
OPTIONAL HEAVY-DUTY PILASTER 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 FIGURE 11 FIGURE 12 - 19 -... -
Page 23: Maintenance
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. -
Page 24: Sliding And Hinged Glass
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. -
Page 25: Parts And Service
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. - Page 26 PROBLEM PROBABLE CAUSE Condensing unit will 1.LINE DISCONNECTED, SWITCH OPEN. not start - no hum. 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 1.IMPROPERLY WIRED.
- Page 27 PROBLEM PROBABLE CAUSE Condensing unit runs, 1.OVERLOAD PROTECTOR. 2.THERMOSTAT. but short cycles on: 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. Condensing unit runs, 1.SHORTAGE OF REFRIGERANT.
- Page 28 PROBLEM PROBABLE CAUSE Product zone 1.CONTROL SETTING TOO HIGH. 2.INADEQUATE AIR CIRCULATION. temperature too high. 3.DIRTY CONDENSER Suction line frosted or 1.OVERCHARGE OF REFRIGERANT. 2.EVAPORATOR FAN NOT RUNNING. sweating. 3.EXPANSION VALVE STUCK OPEN. 4.EXPANSION VALVE SUPERHEAT TOO LOW. Liquid line frosted, 1.RESTRICTION IN DRIER STRAINER.
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Page 29: Wiring Diagrams
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