REACH-IN REFRIGERATORS COR20RRTM, COR22RRTM, COR40RRTMD, COR48RRTMD, COR74RRTMT Service Manual Re
SERVICE MANUAL The products, technical information, and instructions contained in this manual are subject to change without notice. These instructions are not intended to cover all details or variations of the equipment, nor to provide for every possible contingency in the installation, operation or maintenance of this equipment. This manual assumes that the person(s) working on the equipment have been trained and are skilled in working with electrical, plumbing, pneumatic, and mechanical equipment.
Reach-In Refrigerator Service Manual TABLE OF CONTENTS Features of the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Cleaning and Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 How Your Cabinet Operates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Defrost water flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reach-In Refrigerator Service Manual Publication Number: 630460272SER - ii - © 2004, IMI Cornelius Inc.
Reach-In Refrigerator Service Manual FEATURES OF THE UNIT Heavy duty condensing unit located on top for easy-access maintenance. Control panel with temperature display, door ajar light, power indicator, condensate switch U.L. compliant electrical components Heavy duty hinges with self-closing mechanism Strong body with 2 1/2” thick walls injected with CFC-free polyurethane. Stainless steel front and exterior sides.
Reach-In Refrigerator Service Manual CLEANING AND PREVENTIVE MAINTENANCE Weekly or sooner, as required: 1. 2. 3. Disconnect the power source before cleaning. Remove all products and place in a proper cooler. Clean the interior and exterior with a mild soap or detergent solution and then rinse with a warm baking soda solution (one cup of baking soda to one gallon of warm water). Dry the interior completely before replacing products.
Reach-In Refrigerator Service Manual HOW YOUR CABINET OPERATES CAUTION - Make sure the power supply is turned off before making any electrical repairs. Defrost water flow Your new cabinet is completely self-defrosting. The frost that collects on the concealed coils is automatically removed at predetermined intervals. The defrost water on top-mounted condensing units flows into a thermostatically controlled electric vaporizer where it is dissipated into the atmosphere.
Reach-In Refrigerator Service Manual Temperature control If the condensing unit does not run after the power cord is plugged in, check that the temperature control is in the “on” position. This can be done with an ordinary screwdriver. After the system has operated for several hours, the temperature control may be adjusted to suit your needs. Turn it clockwise to make it colder and counterclockwise to make it warmer.
Reach-In Refrigerator Service Manual leads from the terminals and attach them to the new switch and snap it back in place. Make sure there are no breaks or bare wires to cause a short before putting the switch back. FIGURE 6 Lights The incandescent light bulb can be replaced by any 40 watt appliance bulb. Temperature controls CAUTION - Make sure the power supply is turned off before making any electrical repairs. To replace the temperature control: 1. Remove the two mounting screws.
Reach-In Refrigerator Service Manual 2. Pull the feeler bulb from the well which is usually located on the coil or header and pull the lead wires off the control terminals. FIGURE 7 3. If the temperature control is within the first year warranty and is to be returned for credit, be sure to coil the tubing neatly and do not kink it or damage the control in any way. No credit can be issued for any parts that arrive in a damaged condition.
Reach-In Refrigerator Service Manual FIGURE 8 When the coil temperature reaches the proper temperature, the fan(s) will automatically start and continue to run until it comes to the defrost cycle. The fan(s) may turn off if the doors are left open too long during a loading period and the coil becomes warm. Do not call for service until the freezer is given enough time to come down to the proper temperature.
Reach-In Refrigerator Service Manual Blower fan assembly To change the fan blade, remove the speed nut from the threaded shaft. If the fan motor must be changed: 1. Remove the fan blade and lay it carefully aside. Be careful not to bend or damage the blade or it will become out of balance. 2. Remove the four machine screws around the perimeter of the hole in the baffle. These hold the motor mounting bracket in place. The small rubber washers that eliminate vibration should be saved for reassembly.
Reach-In Refrigerator Service Manual 4. Install a new heater element. Be sure to use similar copper wire to install the new element tightly against the coil. Note that there is a bend in the heater element along the center rear. This must make good contact with the drain pan or baffle at the drain opening in order to work properly. If it does not make good contact, the drain line will freeze up and the defrost water will overflow into the food compartment during the defrost cycle.
Reach-In Refrigerator Service Manual WIRING DIAGRAMS COR20RRTM WHITE COND. UNIT SPEAR LINE WHITE GREEN BLACK BLACK JUNCTION BOX WHITE WHITE BLACK WHITE LIGHT BULB BLACK BLACK WHITE BLACK RED BLACK BLACK PERIMETER HEATER WHITE TEMP. CONTROL WHITE BLACK FAN MOTOR BLACK RED RED PUSH BUTTOM FIGURE 11 Publication Number: 630460272SER - 10 - © 2004, IMI Cornelius Inc.
Reach-In Refrigerator Service Manual COR22RRTM BLACK WHITE BLACK WHITE GREY RED BLACK WHITE GREY RED BLACK WHITE HEATER SWITCH MULLION/CANOPY CONNECTION POWER DOOR AJAR G B W GREEN WHITE BLACK GREEN B PUSH BUTTOM LIGHT BULB FEED ELECT. BOX 4X4 WHITE BLACK GREEN HEATERS - FASCIA SWITCH EVAP. PAN COND. UNIT WHITE BLACK GREEN RED WHITE WHITE BLACK RED FAN MOTOR WHITE BLACK CONTROL RED BAFFLE CONNECTION BLACK FIGURE 12 © 2004, IMI Cornelius Inc.
Reach-In Refrigerator Service Manual COR40RRTMD WHITE COND. UNIT SPEAR LINE WHITE GREEN BLACK BLACK JUNCTION BOX WHITE WHITE BLACK WHITE PUSH BUTTOM LIGHT BULB BLACK BLACK BLACK WHITE BLACK BLACK RED BLACK BLACK PERIMETER HEATER WHITE TEMP. CONTROL WHITE BLACK FAN MOTOR BLACK RED RED PUSH BUTTOM FIGURE 13 Publication Number: 630460272SER - 12 - © 2004, IMI Cornelius Inc.
Reach-In Refrigerator Service Manual COR48RRTMD BLACK WHITE BLACK WHITE GREY RED BLACK WHITE GREY RED BLACK WHITE HEATER SWITCH MULLION/CANOPY CONNECTION POWER BLACK WHITE BLACK WHITE B G PUSH BUTTOM G B W B GREEN WHITE BLACK GREEN MULLION HEATERS DOOR AJAR PUSH BUTTOM LIGHT BULB FEED ELECT. BOX 4X4 WHITE BLACK GREEN HEATERS - FASCIA SWITCH EVAP. PAN COND.
Reach-In Refrigerator Service Manual COR74RRTMT BLACK WHITE BLACK WHITE GREY RED BLACK WHITE GREY RED BLACK WHITE HEATER SWITCH MULLION/CANOPY CONNECTION POWER BLACK WHITE BLACK WHITE B G PUSH BUTTOM G B LIGHT BULB W B PUSH BUTTOM G B W B GREEN WHITE BLACK GREEN MULLION HEATERS MULLION HEATERS DOOR AJAR PUSH BUTTOM LIGHT BULB FEED ELECT. BOX 4X4 WHITE BLACK GREEN HEATERS - FASCIA SWITCH EVAP. PAN COND.
Reach-In Refrigerator Service Manual TROUBLESHOOTING Possible causes and solutions PROBLEM COMPRESSOR WILL NOT START THE TEMPERATURE IS TOO COLD © 2004, IMI Cornelius Inc. POSSIBLE CAUSE SOLUTION No voltage in the electrical socket. Use a voltmeter to check the voltage. The electrical conductor or wires may be cut. Use an ohmmeter to check for continuity. Defective electrical components such as: thermostat, relay, thermal protector, etc. Replace defective components.
Reach-In Refrigerator Service Manual PROBLEM THE TEMPERATURE IS NOT COLD ENOUGH POSSIBLE CAUSE SOLUTION Thermostat knob is set at a very warm position. Set the thermostat knob to a colder position. Condenser is dirty. Clean the condenser. The refrigerator has been placed at an inadequate location. The unit must not be near stoves, walls that are exposed to the sun, or places that lack sufficient air flow. Compressor is inefficient or there is a high head pressure due to air in the system.
Reach-In Refrigerator Service Manual PROBLEM NOISE EXTREME CONDENSATION INSIDE THE REFRIGERATOR NO ILLUMINATION © 2004, IMI Cornelius Inc. POSSIBLE CAUSE SOLUTION The refrigerator is not properly leveled. Check if the noise goes away after you level the refrigerator. The condenser is not fastened correctly. Copper tubings are in contact with metal.
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