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Dixie Narco 90 Series Service Manual

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DIXIE-NARCO
SERVICE MANUAL
SERIES 90
TWO/FOUR PRICE
VENDERS
(With Vend/Cam-Hold/By-Pass Switches)
Beginning Serial# 0001-6000CO
April 1997
803,902,620.01

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Summary of Contents for Dixie Narco 90 Series

  • Page 1 DIXIE-NARCO SERVICE MANUAL SERIES 90 TWO/FOUR PRICE VENDERS (With Vend/Cam-Hold/By-Pass Switches) Beginning Serial# 0001-6000CO April 1997 803,902,620.01...

  • Page 2: Table Of Contents

    INDEX General Information........................Page 3 Installation / Set-Up / General Maintenance ............Pages 4 through 11 Electrical Parts & Functions ...................Pages 12 through 19 Product Shimming ........................Page 20 Adjustments: Cams/Rear Spacers ................Pages 21 through 24 Sequence of Operation........................Page 25 Troubleshooting ......................Pages 26 and 27 Refrigeration Parts &...

  • Page 3: General Information

    GENERAL INFORMATION VENDER SAFETY PRECAUTIONS Please read this manual in its entirety. This service information is intended to be used by a qualified service technician, who is familiar with proper and safe procedures to be followed when repairing, replacing or adjusting any Dixie-Narco vender components.

  • Page 4: Installation / Set-Up / General Maintenance

    INSTALLATION / SET-UP / GENERAL MAINTENANCE SERIES 90 CAN & BOTTLE VENDER RECEIVING INSPECTION Upon receipt, inspect the vender for shipping damage. If there is any damage, have the driver note the damage on the Bill of Lading and notify Dixie-Narco. Although the terms of the vender sale require that the consignee originate shipping damage claims, Dixie-Narco will gladly help if you must file a claim.
  • Page 5 ELECTRIC POWER NEEDED Refer to the vender serial number plate to determine the proper voltage and frequency the machine requires (domestically this requirement is 115 Volts, 60 Hertz). Domestic venders will operate properly at +/- 10% of the specified voltage. For domestic models this is between 103 volts and 127 volts. Single phase, alternating current is required.
  • Page 6 PLACING THE VENDER ON LOCATION DO NOT TRANSPORT THE VENDER TO OR FROM THE CAUTION! LOCATION WHEN IT IS LOADED WITH PRODUCT; DAMAGE TO THE VENDER MAY RESULT. The vender must be located on a solid, flat, and level surface. The vender must be positioned close enough to an electrical outlet that an extension cord is not required.
  • Page 7 INSTALLING FLAVOR CARDS The flavor cards may be inserted one of two ways: 1) in the select buttons, or 2) in the flavor card carrier. Swing the coin changer mounting plate away from the outer door, exposing the back of the select buttons.
  • Page 8 CLEANING THE VENDER WHAT TO CLEAN DO NOT USE A WATER JET OR NOZZLE TO CLEAN THE VENDER. SIGN FACE The polycarbonate sign face requires proper cleaning to prolong the service life of this item. It is recommended that you periodically clean the sign face as follows: 1.
  • Page 9 LUBRICATING THE VENDER The vender refrigeration system does not require any field lubrication. The hermetic refrigeration system and fan motors are manufactured with lifetime lubrication. TIME COMPONENT LUBRICANT EXAMPLE Every 6 Months Main Door (or as needed) 1. Lock Bolt & Nut Retainer 2.
  • Page 10 TEMPERATURE CONTROL ADJUSTMENTS Adjustment #1 - Temperature Adjustment Turn the adjustment clockwise for colder product and counter-clockwise for warmer product. This will change the cut-out temperature only, the cut-in temperature remains constant. Adjustment #2 - Altitude Adjustment WARNING DISCONNECT POWER TO THE VENDING MACHINE BEFORE PROCEEDING WITH THIS ADJUSTMENT.
  • Page 11 CHECK IT OUT WHAT TO DO WHAT SHOULD HAPPEN Plug the power cord in. The compressor, condenser fan, and evaporator fan run, "Use Correct Change" window lights and "Sold Out" lamps light. The fluorescent tubes light. Load at least six beverages in each column. Sold out lights go off.

  • Page 12: Electrical Parts & Functions

    ELECTRICAL PARTS AND FUNCTIONS CORRECT CHANGE LAMP Correct Change Lamp 804,700,540.21 Correct Change Lamp (125 VAC) 904,700,180.31 (English) The Correct Change Lamp is mounted in the Coin Insert Casting. The Correct Change Lamp is controlled by the Coin Changer and is "OFF" when coins are in the tubes of the coin changer.
  • Page 13 SOLD OUT SWITCHES (2 in a cluster) The Sold-Out Switch Cluster is located on the Front Mechanism Plate under the Vend Motor Cover. The Sold-Out Switches are the "snap-in" type. To install, place the switch in position over the opening, push in and at the same time slide to the right.
  • Page 14 SOLD OUT LAMPS Sold-Out Lamp 804,700,510.01 The Sold-Out Lamps (one for each vending circuit) are secured to the back or to the Select Buttons in the Selector Panel. The Sold-Out Lamp is turned on by the closing of the Normally Open contact of the Vend Sold-Out Switch. COIN CHANGER There are Coin Changers available which contain either two or four circuits to enable the vender to operate with two or four different priced items.
  • Page 15 VEND MOTOR For Wide Column For Narrow Column The Vend Motor (one for each vending stack) is mounted on a bracket on the Front Mechanism Plate. The Vend Motor is in the Vend Motor Coil Circuit. The Vend Motor runs when a select button is pushed. The Normally Open contact of the Select Switch closes and completes the Vend Motor Coil Circuit.
  • Page 16 CLUSTER (TRIPLE) SWITCH The Vend Motor, Cam-Hold, and the By-Pass Switches are secured together to make the Cluster (Triple) Switch. The Cluster (Triple) Switch, one per Vend Motor, is located on the Vend Motor Assembly and secured by two screws. Vend Motor Switch •...
  • Page 17 VEND RELAY The Vend Relay is not used in Two/Four Price venders. The Vend Relay Function is an integral part of the Coin Changer itself. SEQUENCE RELAY (Not on all Venders) The Sequence Relay, if used, is located on a bracket adjacent to the Vend Relay Socket on the main door and is secured with two screws.
  • Page 18 VEND MOTOR WIDE COLUMN Mounted on the Vender with the Cluster (Triple) Switch on the left side (See Fig. 3). The Linkage and Drive Arm assembly is used to connect the Vend Motor to the Oscillator. (See Fig. 4) Cluster (Triple) Switch 804,100,700.01 - 2/4 Price Vend Motor - Wide Column - 2/4 Price 491,170,100.13 - 1¼"...
  • Page 19 Nyliner (front stack) 901,804,230.01 Electrical Parts & Functions Page 19 of 39...
  • Page 20 Sold-Out Spring 901,700,740.01 Sold-Out Switch Assy. Snap In 804,100,680.51 - 2/4 Price (Insulator & Switch are one piece) Sold-Out Paddle Wide and Narrow 432,070,190.23 - Standard 432,070,270.03 - Large Product Special Use Only 609,070,190.03 - E-Model Special Use Only VEND MOTOR NARROW COLUMN Mounted on the Vender with the Cluster (Triple) Switches on the underside (See Fig.

  • Page 21: Product Shimming

    PRODUCT SHIMMING Refer to the appropriate Technical Bulletin for proper set-up and vending procedures. Listed are a few of the more widely used Technical Bulletins relating to shimming. TB 450 Miscellaneous Worldwide Can Shimming, Shimless Stack Series 90 TB 451 Miscellaneous Worldwide Plastic Bottle Shimming, T-Models TB452 Miscellaneous Worldwide Non-Returnable Bottle Shimming, T-Models...
  • Page 22 CAMS FOR VEND MOTORS Adjustable Cam For: Vending Cam For: Vending Cam For: DNCB 1¼" deeper wide DNCB T-models double or DNCB 1¼" deeper single column. depth wide column. triple depth wide column. DNCB T-models single, DNCB T-models single depth Color of Cam is Green.
  • Page 23 Adjustments: Cams/Rear Spacers Page 23 of 39...
  • Page 24 CAM INSTALLATION AND REMOVAL TO INSTALL A VENDING CAM: 1. Select the Vending Cam required (See page 21). 2. Locate the Hub at the center of the Cam (See Fig. 6). 3. With the Hub facing you, slowly slide the Cam on the front shaft of the Vend Motor while depressing the Lock Tab.
  • Page 25 TIMING TO SET THE TIMING OF A NARROW COLUMN VEND MOTOR: 1. Make sure the hole through the rear shaft is in a horizontal plane. (If a pin were inserted in the hole, the pin would be horizontal.) See Fig. 8. 2.

  • Page 26: Adjustments: Cams/Rear Spacers

    REAR SPACER The Rear Spacer, one for each column, is located vertically at the rear of the column. The Springs, adjustable by hand, slide into the holes in the column wall for cans and other package settings. 491,072,050.23 - Wide 79" Standard Rear Spacer Assemblies 492,070,700.23 - Wide 72"...

  • Page 27: Sequence Of Operation

    SEQUENCE OF OPERATION VEND CYCLE - TWO/FOUR PRICE Refer to the Wiring Diagrams on pages 38 and 39. A) Insert a coin to equal the vend price established for price line #1. B) Coin travels in the Coin Changer. A) The coin... B) activates the Coin Switch or Coin Sensor in the Coin Changer and...

  • Page 28: Troubleshooting

    TROUBLESHOOTING COMMON VENDING PROBLEMS TWO/FOUR PRICE VENDERS Control Panel: Select Buttons and Select Switch locations are the same as Single Price Venders. It is important to remember the wiring and power to these Select Switches will be different because of the Four or Two different priced items available from these Select Switches. Refer to the Wiring Diagram on the inner door of the Vending Machine to determine the wiring of your vender.
  • Page 29 4. Problem: The Vend Motor drifts, both switch arms drop in the notch and the Vend Motor keeps running. Troubleshooting: A. Check the Vend Motor switch. Replace the switch if it is defective. B. Check the Vend Motor Switch Arm's relationship to the cam. If the arm is too close to the cam, bend the arm away from the cam slightly or replace the switch.

  • Page 30: Refrigeration

    REFRIGERATION PARTS AND FUNCTIONS MECHANICAL PARTS COMPRESSOR MOTOR The compressor motor (sealed in the compressor housing) drives the compressor with a shaft that is shared by both parts. It is started by the temperature control switch and the starting relay. It is stopped by the temperature control switch, and, if overloaded, by the thermal overload switch.
  • Page 31 The condensate pan (located in the compressor compartment) collects the water which runs from the evaporator. The water is evaporated into the surrounding air by means of soakers. The soakers extend down into the pan to absorb the water. Exposure to the surrounding air evaporates the water in the soakers.
  • Page 32 ELECTRICAL OPERATION WHAT DOES IT WHAT HAPPENS WHEN THE VENDER TEMPERATURE GETS UP TO THE CUT-IN SETTING: The temperature control switch closes the run winding circuit of the compressor motor. closes the start relay coil circuit. closes in the condenser fan motor circuit. THE HEAVY CURRENT, DRAWN BY THE RUN WINDING, ALSO FLOWS IN THE START RELAY COIL, AND: The start relay coil closes the start relay contacts and completes the start winding...
  • Page 33 REFRIGERATION CIRCUIT DIAGRAMS Tecumseh Embraco Page 33 of 39...

  • Page 34: Refrigeration Cycle

    REFRIGERATION CYCLE WHAT DOES IT WHAT HAPPENS The rising temperature in the vender warms the temperature control bulb & the charge in it. The charge in the control bulb expands in the control tube and stretches the temperature control bellows. The bellows activates the temperature control switch.

  • Page 35: Product Hot - Miscellaneous

    PRODUCT HOT Possible Cause: Compressor will not run. WHAT TO CHECK SOLUTION 1. Is the vender plugged in? 1. NO, plug it in. 2. Is the compressor power cord plugged in? 2. NO, plug it in. 3. Is the temperature control on? 3.
  • Page 36 PRODUCT HOT Possible Cause: Compressor starts, but will not keep running. WHAT TO CHECK SOLUTION 1. Is the temperature control knob set on its highest setting? 1. NO, adjust the knob to a higher setting. 2. Domestically, is the voltage supply between +/- 10% of rating on the 2.
  • Page 37 PRODUCT COLD BUT NOT COLD ENOUGH Possible Cause: Compressor runs, but won't cool product. WHAT TO CHECK SOLUTION 1. Is the temperature control knob set properly? 1. NO, set properly. 2. Domestically, is the voltage supply between 103V and 127V? 2.

  • Page 38: Noisy Refrigeration Unit

    PRODUCT TOO COLD OR FROZEN Possible Cause: Compressor runs too long or continuously WHAT TO CHECK SOLUTION 1. Is the temperature control knob set properly? 1. NO, set properly. 2. Is the temperature control bulb located properly? 2. NO, correct. 3.

  • Page 39: Excessive Condensate

    EXCESSIVE CONDENSATE POSSIBLE CAUSES SOLUTION 1. Is the door sealed properly? (This can be checked by inserting a piece 1. YES, see step 4. of paper, thin plastic or paper currency between the cabinet and the door seal when the NO, Ensure the door is closed tightly.

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