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Service and Installation Manual Please read this manual completely before attempting to install or operate this equipment! Notify carrier of damage! Inspect all components immediately. See page 2. Air Curtain Refrigerator ACR-26S Effective September 1998 Contents Serial Number Information SERIAL NUMBER LOCATION . . . . . . . . . . . . . . . . . . . . . .2 RECEIVING AND INSPECTING . . . . . . . . . . . . . . . . . . . .2 MECHANICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 MCII Tempatrol® FUNCTION SETTINGS . . . . . . . . . . . . .4 BASIC OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 MCII TEMPATROL® Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Display functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Defrost settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Optional settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Self-diagnostic system . . . . . . . . . . . . . . . . . . . . . . . . . .10 REFERENCE CHARTS MCII Tempatrol® CHECK SYSTEM warnings . . . . . . .10 MCII Tempatrol® diagnostic codes . . . . . . . . . . . . . . . .11 MCII Tempatrol® display . . . . . . . . . . . . . . . . . . . . . . .11 MCII Tempatrol® troubleshooting . . . . . . . . . . . . . . . .12 WIRING DIAGRAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 REPLACEMENT PARTS LISTS . . . . . . . . . . . . . . . . . . . . .14 WARRANTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-17 AUTHORIZED PARTS DEPOTS . . . . . . . . . . . . . back cover To view the serial number of the ACR-26S refrigerator, open the door of the unit. The serial number is located on the inside back wall in the top left corner of the unit. Always have the serial number of your unit available when calling for parts or service. A complete list of authorized Delfield parts depots is shown on the back cover of this manual. ©1998 The Delfield Company. All rights reserved. Reproduction without written permission is prohibited. The starburst “1” symbol is a trademark and “Delfield” is a registered trademark of The Delfield Company. Receiving and Inspecting the Equipment Even though most equipment is shipped crated, care should be taken during unloading so the equipment is not damaged while being moved into the building. Carefully check for any visable signs of damage to cartons or containers. If evidence of damage exists, the package should be opened immediately and joint inventory and examination of the contents should be made by you and the driver. up the call in writing to protect your rights. You can only improve your position as a claimant by promptly reporting such loss or damage. You should also retain all cartons or containers, including packing material, until an inspection has been made or waived. Filing a claim Notation of loss or damage does not constitute the filing of a claim. You should file your claim in writing with the carrier immediately! Carriers will furnish the necessary form upon request. You should also request an inspection. If a claim is filed by phone, always follow up immediately in writing. Concealed damage If a concealed loss or damage is discovered after you have given the carrier a clear delivery receipt, notify the carrier in writing immediately or within 10 days from the delivery date. If you phone the carrier, you must follow Specifications DELFIELD PART NUMBER MODEL NUMBER VOLTS/HERTZ/ PHASE AMPS STORAGE CAPACITY 18" x 26" TRAY CAPACITY H.P. BTU/HR DOOR CLOSED BTU/HR SYSTEM CAP. SHIP WEIGHT NEMA PLUG 12.0 12.5 ft3 10 1/2 504 3300 592 lbs./266 kg. 5-15P Air Curtain Refrigerator 074-2900 ACR-26S 115V/60Hz/1ph 2 For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 Installation When the door is open, Delfield’s patented air curtain design directs cold air across the cabinet opening, keeping hot air out and cold air in for extended periods of time. The unit will maintain a maximum of 45°F box temperature at 70°F ambient with the door open during peak production times, quickly returning to a normal 36°F. With the door closed, a maximum 40°F at 100°F ambient is maintained (normal operation) while running only 15% in an 85° room. Location Be sure the location chosen has a floor strong enough to support the total weight of the cabinet and contents. Reinforce the floor if necessary to provide for maximum loading. Don’t pack the interior of the refrigerator so full that air cannot circulate. When operating open, keep trays pushed all the way in so that they do not disrupt the air curtain air flow. Avoid placing unit under air conditioning vents or other ventilation fans that may affect the air curtain when door is open. Leveling A level cabinet looks better and will perform better because the doors will line up with the door frames properly, the cabinet will not be subject to undue strain, and the contents of the cabinet will not move around on the shelves. Use a level to make sure the unit is level from front to back and side to side. Stabilizing The ACR-26S is supplied with casters for your convenience, ease of cleaning underneath and for mobility. Two locking casters allow you to stabilize the unit if you are loading or unloading product. Electrical connection Refer to the amperage data shown on page 1 of this manual, the serial tag and your local code or the National Electrical Code for proper wire sizes. All case wiring is labeled with the required voltage-be sure it is connected to the proper power source. A protected circuit of the correct voltage and amperage must be run for connection of the line cord or permanent connection to the unit. The power switch should be turned to the OFF position and the power cord disconnected whenever performing maintenance functions or cleaning the refrigerated cabinet area. Reversing the door hinging The following steps will allow you to reverse the side the door hinges on. 1. Open the door to 180° open position. 2. Lift up door and remove door from hinges in fully open position. 3. Remove pins from hinges. 4. Remove both hinges and relocate on the opposite side. Tighten hinges. 5. Unscrew the lock stop tab from the top of door and mount to the bottom in the holes provided. 6. Invert the door and mount it into the hinges in the fully open position. Magnetic door Open the ACR’s door completely and the magnetic strip built in to the frame allows the door to remain open while loading or unloading. Maintenance The interior and exterior can be cleaned using soap and warm water. If this is not sufficient, try ammonia and water or a nonabrasive liquid cleaner. When cleaning the exterior, always run with the “grain” of the stainless steel to avoid marring the finish. Do not use an abrasive cleaner because it will scratch the stainless steel and plastic. In order to maintain proper refrigeration performance, the condenser fins must be cleaned of dust, dirt and grease regularly. It is recommended that this be done at least every three months. If conditions are such that the condenser is totally blocked in three months, the frequency of cleaning should be increased. Clean the condenser with a vacuum cleaner or stiff brush. If extremely dirty, a commercially available condenser cleaner may be required. Door gaskets should be cleaned as required to maintain their ability to seal properly. Do not use sharp tools or knives to scrape the bellows as this may tear the gasket and eliminate its ability to seal. A bristle brush and solution of soap and water should be all this is required to keep the gaskets clean. Do not use full strength de-greasing agents on the gasket because they could cause the gasket to crack and become brittle. Customer service FAX (517) 773-3210 3 MCII Function Settings The MCII microprocessor has been preset at the factory for the following functions eliminating the need for programming when your unit arrives. These settings must be correct for your unit to operate properly. 1. Enter diagnostic . . . . . . . . . . Press down + time > temp 2. Enter Phase II . . . . . . . . . . . . . . . . . . . . . . . Press defrost 3. Scroll to “Basic function” . . . . . . Press up/down - go to “012”**** - set at 0:01 4. Scroll to temperature range. . . . . . Press up/down - go to “015” - set at 0:07 5. Scroll to defrost termination temp . . . . . Press up/down -go to “005” - set at 0.03 6. Press reset button 7. Press temp button. . . . . . . . . . . . . Temp should read 0°F 8. Scroll up or down . . . . . . . . . . . . . . . . Set at 36°F (2°C) ***Basic function (“012”) must be set first otherwise it will cancel out everything previously entered. Basic Operation - For Units Built With The MCII Tempatrol® After plugging the unit in and turning the power switch to ON, the unit will operate immediately upon start without any programming of the MCII Tempatrol® required. The freezer temperature is preset to 0°F and the refrigerator is preset to 37°F. NOTE: Freezer cabinets have a built-in differential; the actual interior temperature will be 0 to 3 degrees lower than the set point. When the unit is started, the digital display will flash, and will continue flashing if the interior cabinet temperature is over the set temperature range. When the cabinet is cooled to the set 4 temperature range, the display will stop flashing. When the unit is restarted after a power interruption, the digital display will flash only if the interior cabinet temperature is over the set temperature range. When the cabinet is cooled to the set temperature range, the display will stop flashing. Every time the unit is started or restarted, the clock must be set to the correct time of day if a custom defrost plan has been previously entered into the MCII Tempatrol. Otherwise, the clock will resume at the time when the power was interrupted. For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 MCII Tempatrol® Controls CHECK SYSTEM DEFROST AM PM DOOR AJAR ® CLEAN CONDENSER RESET RESET TIME DEFROST • Turns off alarms • Terminates the current defrost cycle • Returns display of cabinet temperature • Displays the current time (if set) • Allows setting the clock by pressing UP and DOWN buttons • Starts a manual defrost cycle when pressed simultaneously with DEFROST • Displays current defrost setting (A,3,4,6 or 8) • Allows setting defrost setting and times by pressing UP and DOWN buttons • Starts a manual defrost cycle when pressed simultaneously with TIME TEMP UP • Displays current tem- • When time is perature set point displayed, changes time forward • Allows modification of set point by press- • When defrost seting UP and DOWN ting is displayed, buttons moves forward through choices • When first defrost time is displayed, moves the hour forward • When set point is displayed, moves set point up one degree DOWN • When time is displayed, changes time backward • When defrost setting is displayed, moves backward through choices • When first defrost time is displayed, moves the hour backward • When set point is displayed, moves set point down one degree MCII Tempatrol® Display Functions Normal display The normal display is the interior cabinet temperature in degrees Fahrenheit. (For details on changing the display to show the temperature in degrees Celsius, see page 10.) Pressing the RESET button always displays current temperature. By pressing TEMP, TEMP, you youcan canread readthe theset setpoint pointofofthe the interior cabinet. The display will automatically return to the current interior temperature after one minute. It is not unusual for the interior temperature to rise rapidly when a door is opened. The temperature displayed is usually the warmest temperature inside the unit. This is done purposely to make sure that the entire storage area is always represented by the display and assures that the refrigeration system is activated quickly to return the storage area to its correct temperature. Remember that the temperature displayed represents a precision measurement of the actual air temperature, not an average temperature. When a door is opened, the cold air literally “falls out” and warm air rushes in. What the display shows is real, and provides more accurate control. Normal display Flashing temperature disply A flashing The normaltemperature display is the display interior cancabinet be caused temperature by four situain degrees tions, and Fahrenheit. is the first(For signal details of a possible on changing problem: the display to show in degrees Celsius,after see page 1. Thethe unittemperature has been started, or restarted a 10.) Pressing the RESET button always displays curpower loss, and has not yet reached set temperarent temperature. By pressing TEMP, you can read ture. STEPS the set point of the interior cabinet. The display will 2. The interior cabinet is over temperature. This automatically return to the current interior temperaoccurs when a freezer reaches 32°F (0°C) or ture after one minute. when a refrigerator reaches 65°F (18°C). This It is not unusual for the interior temperature returns to rise condition will stop when the temperature rapidly when abelow door isthese opened. The temperature to a reading warning levels. displayed is usually the warmest temperature inside 3. Long duty cycle. The unit has been running the unit. This is done purposely to make sure that for one continuous hour without a door being the entire storage area is always represented by the opened. This condition will stop if RESET is display and assures that the refrigeration system is pressed, a door is opened, or if the compressor activated quickly to return the storage area to its corshuts off. rect temperature. 4. The door has been ajar for over one minute. This Remember that the temperature displayed represents condition will stop if the door is closed. a precision measurement of the actual air temperature, not an average temperature. When a door is Continued on the next page opened, the cold air literally “falls out” and warm air Customer service FAX (517) 773-3210 5 MCII Tempatrol® Display Functions (continued) Door ajar Check system The DOOR AJAR indicator light will come on when a CHECK SYSTEM DEFROST DOOR AJAR AM PM door is opened. If the door CLEAN remains open for more than CONDENSER one minute, the temperature display will begin to flash. After three minutes, a loud beep is emitted every three secRESET display and warning beep will stop when onds. The flashing RESET is pressed. If the door is not closed when RESET is pressed, the same cycle will repeat. The CHECK SYSTEM indicator light comes on when a CHECK SYSTEM DEFROST DOOR AJAR significant® malfunction of the AM PM CLEAN unit has occurred, such as an CONDENSER incomplete defrost, continuous compressor operation with accompanying over-temperature condition, or sensor RESET failure. After 2™ hours in this condition, a loud warning beep is emitted every second. The beep will stop if RESET is pressed. Clean condenser Clock display The CLEAN CONDENSER indicator light is a maintenance reminder that comes on every 90 days. It will go off when the RESET button is pressed. Defrost CHECK SYSTEM DEFROST AM PM DOOR AJAR CLEAN CONDENSER Setting the CLOCK is not CHECK SYSTEM DEFROST DOOR AJAR AM PM essential to operation unless CLEAN custom defrost times have ® CONDENSER been set on freezer units and while not in automatic (A) mode. If the power is interrupted, the clock may have to be RESET reset for correct custom defrost timing. RESET The DEFROST indicator light comes on during defrosting CHECK SYSTEM AM PM cycles. The defrost cycle may CLEAN be terminated by pressing the CONDENSER RESET button. Warmer interior cabinet temperatures are normal during and after defrosting. DEFROST DOOR AJAR ® RESET MCII Tempatrol® Programming Setting the clock To set the clock, perform the following steps: 1) Press RESET to clear the flashing display; this must be done to make the rest of the keypad functional. STEPS CHECK SYSTEM DEFROST AM PM DOOR AJAR ® CLEAN CONDENSER 3) Press UP or DOWN to set the correct time. Note the AM and PM indicators at the left of the clock display. 4) Press RESET to return to interior cabinet temperature display. If the defrost cycle starts while the clock is being set, stop pressing the UP or DOWN button and wait a couple of seconds before continuing. This will help to keep the time display advancing quickly. RESET 2) Press the TIME button to show current time (set to 12:00 a.m. when started or restarted). 6 For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 ® MCII Tempatrol® Programming (continued) Setting defrost cycles Setting defrost cycles on freezer units is done via the MCII Tempatrol. The automatic defrost cycle is preprogrammed at “3” in the factory, and no adjustment is needed to use the unit with this setting. A custom defrost cycle for freezers can be programmed if desired. For information on how to determine the proper defrost setting for your application, see page 9. Refrigerators defrost automatically; no adjustment is needed. Follow these steps to set or change the defrost cycle: CHECK SYSTEM DEFROST AM PM CHECK SYSTEM DEFROST AM PM STEPS ® RESET however, the time of the first defrost is shown. 4) Press UP or DOWN to set the hour of the first defrost cycle. Other defrosts will then be spaced evenly over each 24-hour period, as determined by the number of cycles selected. 5) Press RESET to return display to interior temperature reading. DOOR AJAR ® CLEAN CONDENSER RESET DOOR AJAR CLEAN CONDENSER Setting the temperature set point 1) Press DEFROST. The current defrost setting (A, 3, 4, 6 or 8) will be displayed. “A” indicates the automatic “demand” defrost cycle; 3 through 8 indicate the number of defrost cycles per 24 hours. CHECK SYSTEM DEFROST AM PM DOOR AJAR Setting the temperature set point is also accomplished using the MCII Tempatrol. The recommended storage temperature for freezers is 0°F to –5°F (–18°C to –21°C); the set point is preprogrammed at the factory at 0°F (–18°C). The recommended storage temperature for refrigerators is 35°F to 40°F (2°C to 4°C); the set point is preprogrammed at the factory at 37°F (3°C). If other ranges are selected and set, they must be suitable for all products being stored in the unit. ® CLEAN CONDENSER STEPS RESET CHECK SYSTEM DEFROST AM PM DOOR AJAR ® CLEAN CONDENSER 2) Press UP or DOWN until desired setting appears in CHECK SYSTEM DEFROST AM PM RESET DOOR AJAR ® CLEAN CONDENSER 1) Press RESET to display interior cabinet temperature, if CHECK SYSTEM DEFROST AM PM RESET DOOR AJAR ® CLEAN CONDENSER the display. 3) Press DEFROST again. If you selected automatic (A) mode, the display will return to the interior temperature reading. If you selected 3, 4, 6 or 8, RESET not already shown. 2) Press TEMP to display the current set point. 3) Press UP or DOWN to select the desired new set point. Refrigerators are designed to maintain an interior temperature of 34°F to 45°F (1°C to 7°C); Customer service FAX (517) 773-3210 7 MCII Tempatrol® Defrost Settings Refrigerators Example Refrigerators automatically defrost, using a special defrost program in the MCII Tempatrol®. A refrigerator will defrost whenever the MCII Tempatrol detects poor unit efficiency. A refrigerator defrost will rarely occur. However, under certain conditions, a defrost may be needed to assure optimum performance. Defrost cycles will occur more frequently at interior temperature settings of 34°F (1°C) or less. Frequent defrosts may also occur when room temperatures are unusually high. Refrigerator defrosts cannot be adjusted; however, pressing the RESET button will terminate the current defrost cycle on either a refrigerator or a freezer. Matt’s Diner wants to avoid defrost cycles during the peak business hours around 7:00 a.m., noon and 5:00 p.m. The freezer is used heavily during these periods, but the rest of the day is “normal”. The humidity in the diner is high, however. Therefore, we estimate that four defrosts are needed each day, and they will occur every six hours. To avoid the 7:00 a.m. rush, the first defrost time will be set at 8:00 a.m. in this example. Subsequent defrosts then occur at 2:00 p.m., 8:00 p.m. and 2:00 a.m., thereby missing all the rush periods. The first defrost should be set to follow the period of heaviest usage during the day. For additional instructions on using the MCII Tempatrol to set a custom defrost cycle, see page 8. Freezers On freezers, an automatic (A) defrost cycle has been preset at the factory; custom defrost cycles may be set by the user. The last defrost program is always kept in the MCII Tempatrol’s memory, even if power is lost. Correct setting of the clock is essential if a custom defrost cycle is set. Custom defrost cycles When programming the custom defrost cycles, the display will offer a choice of A, 3, 4, 6 or 8. The following chart has guidelines on selecting the proper setting. DEFROST SETTINGS USAGE LEVEL FREQUENCY OF DOOR OPENINGS DEFROST TIMING A 3 variable varies during the day automatic; as needed light 8 to 10 times per day every 8 hours 4 6 average about once per hour every 6 hours heavy two or three times per hour every 4 hours 8 very heavy several times per hour every 3 hours More defrosts should be added in high humidity environments. Based on your selection, enter a time for the first defrost so that it, and all subsequent defrosts, occur at suitable times. Automatic defrost cycles If the automatic (A) or “demand” defrost mode is selected, the MCII Tempatrol will monitor usage and efficiency of the unit, and will then defrost automatically only when needed. This setting is recommended for all applications when the time of each defrost is not important. In automatic (A) mode, it is possible for light duty units to operate for several days without defrosting. By eliminating unnecessary defrosting, significant energy savings can be realized, and fewer defrosts also lead to more constant temperature control and longer product life. The automatic defrost mode is not recommended when the number of door openings per hour exceeds three. For additional instructions on using the MCII Tempatrol to set the automatic (A) defrost cycle, see page 8. Manual defrost cycles A manual defrost cycle can be initiated at any time by pressing the DEFROST and TIME buttons simultaneously. The defrost can be terminated by pressing RESET. MCII Tempatrol® Optional Settings Changing the temperature The temperature display can read in degrees Fahrenheit (default setting) or Celsius (International System). To change scales, follow these steps: 1) Press the TIME and DOWN buttons simultaneously, then press the TEMP button. STEPS 2) Press the DEFROST button. The condensing unit will shut off, and the display will read 000. 8 For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 3) Hold the TIME button, and press UP or DOWN until the display shows C for Celsius, or F for Fahrenheit. 4) Release the TIME button. The display will blink to indicate the command has been executed. 5) Press RESET. The condensing unit will restart, and the display will return to the cabinet temperature, now displayed in the new temperature scale. MCII Tempatrol® Optional Settings (continued) Locking control settings You can lock the control settings so that they cannot be changed without knowing how to unlock them. This will prevent unsupervised changes to the set point or defrost cycles. 1) Press the TIME and DOWN buttons simultaneously, then press the TEMP button. STEPS 2) Press the DEFROST button. The condensing unit will shut off, and the display will read 000. 3) Press UP until the display reads 009. 4) Hold the TIME button, and press UP or DOWN until the display shows L for locked, or U for unlocked. 5) Release the TIME button. The display will blink to indicate the command has been executed. 6) Press RESET. The condensing unit will restart, and the display will return to the cabinet temperature. No control settings can be changed until the locking procedure is reversed. Over temperature alarms You can select when the over temperature alarm will sound. The following settings are available: 0:01 Alarm sounds when unit is over set point for 60 minutes (default setting) 0:02 Alarm sounds when the unit is 5°F (3°C) over set point. 0:03 Alarm sounds when the unit is 10°F (6°C) over set point. 0:04 Alarm sounds when the unit is 15°F (8°C) over set point. 1) Press the TIME and DOWN buttons simultaneously, then press press the TEMP button. STEPS 2) Press the DEFROST button. The condensing unit will shut off, and the display will read 000. 3) Press UP until the display reads 010. 4) Hold the TIME button, and press UP or DOWN until the display shows the desired setting from the chart above. 5) Release the TIME button. The display will blink to indicate the command has been executed. 6) Press RESET. The condensing unit will restart, and the display will return to the cabinet temperature. STEPS 1) Press the TIME and DOWN buttons simultaneously, then press the TEMP button. 2) Press the DEFROST button. The condensing unit will shut off, and the display will read 000. 3) Press UP until the display reads 011. 4) Hold the TIME button, and press UP or DOWN until the display shows the desired setting. 5) Release the TIME button. The display will blink to indicate the command has been executed. 6) Press RESET. The condensing unit will restart, and the display will return to the cabinet temperature. Set point differential tolerance The unit is set at the factory to hold the programmed set point to within plus or minus 3°F (2°C), which is default option 0:01. Depending on the alarm setting you have selected, the alarm will sound when the cabinet temperature is outside that range. You may change the differential tolerance to 2°F (1°C) by selecting option 0:02, or 1°F (0.5°C) by selecting option 0:03. 1) Press the TIME and DOWN buttons simultaneously, then press the TEMP button. STEPS 2) Press the DEFROST button. The condensing unit will shut off, and the display will read 000. 3) Press UP until the display reads 013. 4) Hold the TIME button, and press UP or DOWN until the display shows the desired setting. 5) Release the TIME button. The display will blink to indicate the command has been executed. 6) Press RESET. The condensing unit will restart, and the display will return to the cabinet temperature. Other programmable options There are many other options accessible through the MCII Tempatrol; these should be left to qualified service personnel, however. For information on accessing the MCII Tempatrol’s self-diagnostic mode, see the next section. Power up display When the unit is restarted, you can choose to have the normal temperature display appear (option 0:01), a flashing temperature display for 3 seconds (option 0:02) or a flashing clock display for 3 seconds (option 0:03). The flashing displays may help remind you to check the defrost, set point or clock settings after a power interruption. Customer service FAX (517) 773-3210 9 MCII Tempatrol® Self-Diagnostic System Check system indications Whenever a CHECK SYSTEM indication appears, a potentially serious problem has occurred. Appropriate action should be taken CAUTION immediately to ensure proper product temperature is maintained. A qualified service agent should be called whenever a serious problem has occurred. You may be able to speed up the repair process, however, by noting the diagnostic codes provided on the digital display by the MCII when a problem occurs. Using the diagnostic mode Using the following instructions, enter the diagnostic mode and write down the codes to give to your service agent. 1) To enter the diagnostic mode, press DOWN and TIME simultaneously, then press TEMP. STEPS 2) The diagnostic code numbers and CHECK SYSTEM indicator should appear. If there is more than one code number, the unit will display them one after another, repeating the sequence continuously. By using the chart provided on page 12, you can determine the problem area or areas to check. 3) To exit the diagnostic mode, press RESET. The CHECK SYSTEM indicator will go out unless there is a sensor problem. The CHECK SYSTEM indication will reappear in one hour if an over-temperature condition still exists. The diagnostic codes are provided for information only; service should be left to qualified service agents only! Clearing error codes After the unit is repaired, the error code or codes must be erased from the MCII. Otherwise, they will be stored and any new errors will be added to the old list, making diagnosis of potential future problems difficult. Follow these steps to erase all error codes from the MCII: 1) Press the TIME and DOWN buttons simultaneously, then press the TEMP button. STEPS 2) Press the DEFROST button. The condensing unit will shut off, and the display will read 000. 3) Press UP until the display reads 08. 4) Press the TIME button. The display will blink to indicate the command has been executed. 5) Press RESET. The condensing unit will restart, and the display will return to the cabinet temperature. MCII Tempatrol® Check System Warnings 10 For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 (Reference Chart) MCII Tempatrol® Diagnostic Codes (Reference Chart) DISCONNECT ALL POWER TO YOUR DELFIELD UNIT BEFORE REPAIRING OR REPLACING THE MICROPROCESSOR OR ANY OTHER MAINTENANCE OR REPAIR FUNCTION MCII Tempatrol® Display (Reference Chart) Customer service FAX (517) 773-3210 11 MCII Tempatrol® Troubleshooting 12 For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 (Reference Chart) ACR-26S Wiring Diagram N L1 AC SERIES REFRIGERATORS WIRING FOR 115V MODELS MAIN WIRING #14 AWG PSS PM TRANSFORMER EVAPORATOR 115V POWER CORD PROVIDED ON SELF-CONTAINED MODELS PMR2 CONDENSING UNIT CABINET WIRING FRAME HEATERS GLASS DOOR HEATERS ON - G MODEL ONLY CONDENSATE EVAPORATOR (OPTIONAL) PM: POWER MODULE PMR: POWER MODULE RELAY Customer service FAX (517) 773-3210 13 Replacement Parts Lists Bumper, round, gray ........................................................................................ 323-4223 Caster, 4" diameter, plate w/brakes ................................................................... 323-4221 Coil, evaporator................................................................................................. 351-6085 Control, MCII display ........................................................................................ 219-3967 Condensing unit, 1/2 HP, med, 404A ................................................................ 352-6731 Control, pressure, high ..................................................................................... 351-6247 Cord/plug assembly 5-15P ............................................................................... 218-3348 Door assembly .................................................................................................. 034-0011 Fan assembly, 8" diameter ................................................................................ 216-2687 Gasket, door ..................................................................................................... 170-1147 Handle assembly, rear....................................................................................... 034-0021 Hinge, bottom half (2) ...................................................................................... 005-5292 Hinge, top half (2)............................................................................................. 005-5291 Lock .................................................................................................................. 323-4416 Louver, back ..................................................................................................... 005-5158 Louver, front ..................................................................................................... 005-5157 Module, power, MCII ........................................................................................ 219-3987 Switch, rocker ................................................................................................... 219-0154 Valve, expansion, 404A ..................................................................................... 351-6084 14 For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 Notes: Customer service FAX (517) 773-3210 15 Standard 1 Year Limited Warranty The Delfield Company (“Delfield”) warrants to the Original Purchaser of the Delfield product (herein called the “Unit”) that such Unit, and all parts thereof, will be free from defects in material and workmanship under normal use and service for a period of one (1) year from the date of shipment of the Unit to the Original Purchaser or, if the Original Purchaser returns the warranty card completely filled out including the date of installation within thirty (30) days of receipt of the Unit, one (1) year from the date of installation. During this one year warranty period, Delfield will repair or replace any defective part or portion thereof returned to Delfield by the Original Purchaser which Delfield determines was defective due to faulty material or workmanship. The Original Purchaser will pay all labor, crating, freight and related costs incurred in the removal of the Unit or defective component and shipment to Delfield, except that during a period of either ninety (90) days from the date of shipment of the Unit to the Original Purchaser or, if the Original Purchaser returns the warranty card completely filled out including the date of installation within thirty (30) days of receipt of the Unit, ninety (90) days from the date of installation Delfield will pay all related labor costs. Delfield will pay the return costs if the Unit or part thereof was defective. The term “Original Purchaser” as used herein means that person, firm, association, or corporation for whom the Unit was originally installed. This Warranty does not apply to any Unit or part thereof that has been subjected to misuse, neglect, alteration, or accident, such as accidental damage to the exterior finish; operated contrary to the recommendations specified by Delfield; or repaired or altered by anyone other than Delfield in any way so as to, in Delfield’s sole judgment, affect its quality or efficiency. This Warranty does not apply to any Unit that has been moved from the location where it was originally installed. This Warranty also does not cover the refrigerator drier or the light bulbs used in the Unit. The warranty is subject to the user’s normal maintenance and care responsibility as set forth in the Service and Installation Manual, such as cleaning the condenser coil, and is in lieu of all other obligations of Delfield. Delfield neither assumes, nor authorizes any other person to assume for Delfield, any other liability in connection with Delfield’s products. Removal or defacement of the original Serial Number or Model Number from any Unit shall be deemed to release Delfield from all obligations hereunder or any other obligations, express or implied. Parts furnished by suppliers to Delfield are guaranteed by Delfield only to the extent of the original manufacturer’s express warranty to Delfield. Failure of the Original Purchaser to receive such manufacturer’s warranty shall in no way create any warranty, express or implied, or any other obligation or liability on Delfield’s part in respect thereof. 16 — 1 year parts, 90 days labor If shipment of a replacement part is requested prior to the arrival in the Delfield factory of the part claimed to be defective, the Original Purchaser must accept delivery of the replacement part on a C.O.D. basis, with credit being issued after the part has been received and inspected at Delfield’s plant and determined by Delfield to be within this Warranty. Under no condition does this Warranty give the Original Purchaser the right to replace the defective Unit with a complete Unit of the same manufacturer or of another make. Unless authorized by Delfield in writing, this Warranty does not permit the replacement of any part, including the motor-compressor, to be made with the part of another make or manufacturer. No claims can be made under this Warranty for spoilage of products for any reason, including system failure. The installation contractor shall be responsible for building access, entrance and field conditions to insure sufficient clearance to allow any hood(s), vent(s) or Unit(s), if necessary, to be brought into the building. Delfield will not be responsible for structural changes or damages incurred during installation of the Unit or any exhaust system. Delfield shall not be liable in any manner for any default or delay in performance hereunder caused by or resulting from any contingency beyond Delfield’s control, including, but not limited to, war, governmental restrictions or restraints, strikes, lockouts, injunctions, fire, floods, acts of nature, short or reduced supply of raw materials, or discontinuance of the parts by the original part manufacturer. Except as provided in any Additional Four Year Protection Plan, if applicable, and the Service Labor Contract, if applicable, the foregoing is exclusive and in lieu of all other warranties, whether written or oral, express or implied. This Warranty supersedes and excludes any prior oral or written representations or warranties. Delfield expressly disclaims any implied warranties of merchantability, fitness for a particular purpose or compliance with any law, treaty, rule or regulation relating to the discharge of substances into the environment. The sole and exclusive remedies of any person relating to the Unit, and the full liability of Delfield for any breach of this Warranty, will be as provided in this Warranty. Other than this Delfield Standard One Year Limited Warranty, any applicable Delfield Additional Four Year Protection Plan or applicable Delfield Service Labor Contract, the Original Purchaser agrees and acknowledges that no other warranties are offered or provided in connection with or for the Unit or any part thereof. In no event will Delfield be liable for special, incidental or consequential damages, or for damages in the nature of penalties. For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 Additional 4 Year Protection Plan Delfield Model# Serial# Installation Date In addition to the Standard One Year Warranty on the MotorCompressor contained in the above listed Delfield product (the “Unit”), The Delfield Company (“Delfield”) also agrees to repair, or exchange with similar or interchangeable parts in design and capacity at Delfield’s option, the defective Motor-Compressor contained in the Unit (the “Motor-Compressor”), or any part thereof, for the Original Purchaser only, at any time during the four (4) years following the initial one (1) year period commencing on the date of installation for the Original Purchaser. Failure of the Original Purchaser to register the registration card containing the Original Purchaser’s name, address, date of installation, model number and serial number of the Unit containing the Motor-Compressor within 30 days from the date of installation shall void this Warranty. This additional Warranty is only available if the Motor-Compressor is inoperative due to defects in material or factory workmanship, as determined by Delfield in its sole judgment and discretion. The Original Purchaser shall be responsible for returning the defective Motor-Compressor to Delfield prepaid, F.O.B. at the address shown on the back cover of this manual. The term “Original Purchaser” as used herein shall be deemed to mean that person, firm, association, or corporation for whom the equipment was originally installed. The term “Motor-Compressor” as used herein does not include unit base, air or water cooled condenser, receiver, electrical accessories such as relay, capacitors, refrigerant controls, or condenser fan/motor assembly. This warranty does not cover labor charges incidental to the replacement of parts. This warranty further does not include any equipment to which said condensing unit is connected, such as cooling coils, temperature controls or refrigerant metering devices. This warranty shall be void if the Motor-Compressor, in Delfield’s sole judgment, has been subjected to misuse, neglect, alteration or accident, operated contrary to the recommendations specified by the Unit manufacturer, repaired or altered by anyone other than Delfield in any way so as, in Delfield’s sole judgment, to affect its quality or efficiency or if the serial number has been altered, defaced or removed. This Warranty does not apply to a Motor-Compressor in any Unit that has been moved from the location where it was originally installed. The addition of methyl chloride to the condensing unit or refrigeration system shall void this warranty. General Conditions — for motor-compressor only Delfield shall not be liable in any manner for any default or delay in performance thereunder caused by or resulting from any contingency beyond Delfield’s control including, but not limited to, war, governmental restrictions or restraints, strikes, lockouts, injunctions, fire, floods, acts of nature, short or reduced supply of raw material or discontinuance of any part or the Motor-Compressor by the unit manufacturer. Replacement of a defective Motor-Compressor is limited to one (1) Motor-Compressor by us during the four (4) year period. Delfield shall replace the Motor-Compressor at no charge. This Warranty does not give the Original Purchaser of the Motor-Compressor the right to purchase a complete replacement Motor-Compressor of the same make or of another make. It further does not permit the replacement to be made with a MotorCompressor of another kind unless authorized by Delfield. In the event Delfield authorizes the Original Purchaser to purchase a replacement Motor-Compressor locally, only the wholesale cost of the Motor-Compressor is refundable. Expressly excluded from this warranty are damages resulting from spoilage of goods. Except as provided in any applicable Standard One Year Limited Warranty or applicable Service Labor Contract, the foregoing is exclusive and in lieu of all other warranties, whether written or oral, express or implied. This Warranty supersedes and excludes any prior oral or written representations or warranties. Delfield expressly disclaims any implied warranties of merchantability, fitness for a particular purpose or compliance with any law, treaty, rule or regulation relating to the discharge of substances into the environment. The sole and exclusive remedies of any person relating to the Motor-Compressor, and the full liability of Delfield for any breach of this Warranty, will be as provided in this Warranty. Other than any applicable Delfield Standard One Year Limited Warranty, this Delfield Additional Four Year Protection Plan and any applicable Delfield Service Labor Contract, the Original Purchaser agrees and acknowledges that no other warranties are offered or provided in connection with or for the MotorCompressor or any part thereof. In no event will Delfield be liable for special, incidental or consequential damages, or for damages in the nature of penalties. Customer service FAX (517) 773-3210 17 Notes: 18 For customer service, call (800) 733-8829, (800) 733-8821 or (517) 773-7981 DMACR 9/98
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