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- Page 1 ® REACH-IN REFRIGERATORS COR20RRTM, COR22RRTM, COR40RRTMD, COR48RRTMD, COR74RRTMT Service Manual Release Date: June 16, 2004 Publication Number: 630460252SER Revision Date: NA Revision: A Visit the IMI Cornelius web site at www.cornelius.com for all your Literature needs.
- Page 2 Cornelius product contact: www.cornelius.com 800-238-3600 Trademarks and copyrights: Aurora, Cornelius, Decade, Hydro Boost, Sitco, Spirit, UF-1, Vanguard, Venture, Olympus, and Vista are registered trademarks of IMI Cornelius Inc. Optifill trademark is pending. This document contains proprietary information and it may not be reproduced in any way without permission from Cornelius.
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Page 3: Table Of Contents
COR20RRTM ........ - Page 4 Reach-In Refrigerator Service Manual Publication Number: 630460272SER - ii - © 2004, IMI Cornelius Inc.
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Page 5: Features Of The Unit
EATURES OF THE Heavy duty condensing unit located on top for easy-access maintenance. COR48RRTMD © 2004, IMI Cornelius Inc. Reach-In Refrigerator Service Manual 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”... -
Page 6: Cleaning And Preventive Maintenance
Empty out and clean drain pan located next to the condensing unit as required. Check regularly for excessive water accumulation. Plug in the cabinet and wait until the proper temperature is achieved before reloading the cabinet with product. Publication Number: 630460272SER AINTENANCE FIGURE 2 - 2 - © 2004, IMI Cornelius Inc. -
Page 7: How Your Cabinet Operates
When the doors are closed again, the recovery is very rapid unless a large quantity of warm product is put in at one time. © 2004, IMI Cornelius Inc. Reach-In Refrigerator Service Manual FIGURE 3... -
Page 8: Temperature Control
Place a knife blade or similar tool behind the switch flange and pry it out. To replace the switch, disconnect the Publication Number: 630460272SER FIGURE 5 F to 42 - 4 - F, all refrigerators © 2004, IMI Cornelius Inc. -
Page 9: Lights
CAUTION - Make sure the power supply is turned off before making any electrical repairs. To replace the temperature control: Remove the two mounting screws. © 2004, IMI Cornelius Inc. Reach-In Refrigerator Service Manual FIGURE 6 - 5 - Publication Number: 630460272SER... -
Page 10: Time Clocks
As soon as the power is turned on, if the temperature control is in the “on” position, the time clock and condensing unit will start. Publication Number: 630460272SER FIGURE 7 - 6 - © 2004, IMI Cornelius Inc. - Page 11 Before you make changes to the length of the fail safe or the number of defrost periods, a competent service engineer should make a complete study of all the contributing factors. © 2004, IMI Cornelius Inc. - 7 - Publication Number: 630460272SER...
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Page 12: Blower Fan Assembly
Use a pair of side cutters or diagonal pliers to snip off all of the copper wires holding the heater element to the coil. Disconnect the element from the cabinet leads. Publication Number: 630460272SER FIGURE 9 FIGURE 10 - 8 - © 2004, IMI Cornelius Inc. -
Page 13: Condensing Unit
After the cabinet has run for several hours, it should be rechecked to be sure the gas charge is correct and the system is balanced. © 2004, IMI Cornelius Inc. Reach-In Refrigerator Service Manual - 9 -... -
Page 14: Wiring Diagrams
Reach-In Refrigerator Service Manual IRING IAGRAMS COR20RRTM COND. UNIT WHITE FAN MOTOR TEMP. CONTROL BLACK Publication Number: 630460272SER WHITE BLACK JUNCTION WHITE BLACK PERIMETER HEATER PUSH LIGHT BUTTOM BULB FIGURE 11 - 10 - SPEAR LINE © 2004, IMI Cornelius Inc. -
Page 15: Cor22Rrtm
COR22RRTM MULLION/CANOPY CONNECTION BLACK GREY WHITE BLACK BLACK WHITE WHITE PUSH BUTTOM HEATERS - FASCIA © 2004, IMI Cornelius Inc. LIGHT BULB WHITE FEED BLACK GREEN SWITCH EVAP. WHITE BLACK GREEN COND. UNIT WHITE FAN MOTOR WHITE BLACK BAFFLE CONNECTION... -
Page 16: Cor40Rrtmd
Reach-In Refrigerator Service Manual COR40RRTMD COND. UNIT WHITE FAN MOTOR TEMP. CONTROL BLACK Publication Number: 630460272SER WHITE BLACK JUNCTION WHITE BLACK PERIMETER HEATER PUSH PUSH BUTTOM LIGHT BUTTOM BULB FIGURE 13 - 12 - SPEAR LINE © 2004, IMI Cornelius Inc. -
Page 17: Cor48Rrtmd
COR48RRTMD MULLION/CANOPY CONNECTION BLACK WHITE BLACK WHITE BLACK WHITE BLACK WHITE PUSH BUTTOM LIGHT BULB HEATERS - FASCIA © 2004, IMI Cornelius Inc. GREY BLACK WHITE PUSH BUTTOM WHITE FEED BLACK GREEN SWITCH EVAP. WHITE BLACK GREEN COND. UNIT WHITE... -
Page 18: Cor74Rrtmt
BLACK GREEN SWITCH EVAP. WHITE BLACK GREEN COND. UNIT WHITE FAN MOTOR WHITE BLACK BAFFLE CONNECTION FIGURE 15 - 14 - GREY POWER BLACK WHITE DOOR AJAR GREEN ELECT. BOX 4 X 4 CONTROL BLACK © 2004, IMI Cornelius Inc. -
Page 19: Troubleshooting
ROUBLESHOOTING Possible causes and solutions PROBLEM COMPRESSOR WILL NOT START THE TEMPERATURE IS TOO COLD © 2004, IMI Cornelius Inc. Reach-In Refrigerator Service Manual POSSIBLE CAUSE No voltage in the electrical socket. The electrical conductor or wires may be cut. - Page 20 Replace the fan motor if it doesn’t work. Use a voltage regulator if the voltage is lower than 103 volts. Check for appropriate insulation on the connections of each electrical component. © 2004, IMI Cornelius Inc.
- Page 21 PROBLEM NOISE EXTREME CONDENSATION INSIDE THE REFRIGERATOR NO ILLUMINATION © 2004, IMI Cornelius Inc. Reach-In Refrigerator Service Manual POSSIBLE CAUSE The refrigerator is not properly leveled. The condenser is not fastened correctly. Copper tubings are in contact with metal. The evaporator and/or condenser fans are loose.
- Page 22 IMI Cornelius Inc. www.cornelius.com...