Instruction/ maintenance manual of the product CDS-3 Bunn
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OPERA TING & SER VICE MANU AL BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 www .bunnomatic.com 29793.0000D 02/07 ©1999 Bunn-O-Matic Corporation POWDER AUTO FILL ™ For CDS-2 & 3 T o obtain the Illustrated Parts Catalog, visit the Bunn-O-Matic website, at www .
2 INTRODUCTION This equipment supplies a liquid mix to the hoppers on the CDS-2 or 3 dispensers. It is for indoor use only on a sturdy counter or shelf.
3 00656.0000 00986.0000 USER NOTICES Carefully read and follow all notices on the equipment and in this manual. They were written for your protection. All notices are to be kept in good condition. Replace any unreadable or damaged labels. 29793 080102 10.
4 OPERA TING INSTRUCTIONS 1. On the CDS control panel, make the follo wing switch settings: a) POWER- “ON” b) DA Y/NIGHT - “DA Y” 2. Pull the Powder Auto-Fill fully forward on its sup- port rails and open the door .
5 ADJUSTMENTS When using the Powder Auto-Fill with a new powdered granita mix, follow the procedure outlined below to adjust the Powder Auto-Fill to produce the correct recipe.
6 Ejector Elbow Auger Auger Drive Shaft Auger Drive Bracket Retaining Clip Retaining Ring Wiper Blade Shaft Wiper Blade Wiper Drive Gear Hopper Base Slide Gate Mixing Chamber Whipper Chamber Frother D.
7 F AUL T LIST Door Lamp Fault ON Normal operation - Powder Auto-Fill ready to dispense Flashes ON/OFF at 50% duty cycle Low product level in Powder Auto-Fill hopper T wo flashes about every 2 second.
8 TROUBLESHOOTING A troubleshooting guide is provided to suggest probable causes and remedies for the most likely problems encountered. If the problem remains after exhausting the troubleshooting steps, contact the Bunn-O-Matic T echnical Service Department.
9 TROUBLESHOOTING (cont.) PROBABLE CAUSE REMEDY PROBLEM Product level in CDS is lower than level Probe - CDS running; Powder Auto-Fill door lamp flashes two times Product level in CDS is lower than l.
10 TROUBLESHOOTING (cont.) PROBABLE CAUSE REMEDY PROBLEM Powder Auto-Fill will not dispense product Dripping from dispense tip Water flows continuously 1. No water 2. No power or incorrect voltage to the dispenser . 3. Dispense Solenoid Valve 4. Control Board and Probe 5.
11 TROUBLESHOOTING (cont.) PROBABLE CAUSE REMEDY PROBLEM Product overflows CDS hopper Weak product Dispenser is making unusual nois- es Display not lit 1. Control Board and Probe 2. Dispense Solenoid Valve 1. Whipper Motor 2. Frother 3. Dispense Solenoid Valve 4.
12 SERVICE This section provides procedures for testing and replacing various major components used in this dispenser should service become necessar y .
13 SERVICE (cont.) FIG. 2 AUGER DRIVE COMPONENTS Location The auger drive component s are locate d in the bott om of the hopper assembly . Removal, Cleaning and Replacement 1. Open the dispenser door . 2. Lift the hopper assembly over the retainer plates (16) on hopper support plate (12) and slide hopper assembly out the front of the dispenser .
14 FIG. 4 AUGER MOTOR P1922 AUGER DRIVE MOTOR Location: The auger motor is located on the right rear of the motor assembly mounting panel. T est procedures: 1. Disconnect the dispenser from the power source. 2. Check the voltage across the positive (red wire) terminal and the negative (black wire) terminal on the auger motor with a voltm eter .
15 FROTHER AND MIXING/WHIPPER CHAMBER FIG. 6 FROTHER AND MIXING/WHIPPER CHAMBER P1923 Location: The frother is located behind the dispenser door , mounted on the front panel and inside the whipper chamber . Removal, Cleaning and Replacement: 1. Disconnect the dispenser from the power source.
16 SERVICE (cont.) WHIPPER MOTOR FIG. 8 WHIPPER MOTOR P1924 Location: The whipper motor is located on the back side of the whipper motor mounting panel. T est Procedure: 1. Disconnect the dispenser from the power source. 2. Disconnect the white/red and white/brown wires of the main wiring harness from the black leads of the whipper motor .
17 SERVICE (cont.) when reconnecting wires. 13. Slide the slinger onto the motor shaft flush against the front panel. 14. Wash whipper chamber components in a mild solution of dish detergent using a bristle brush. 15. Rinse thorou ghly and allow to dry befo re rein stalling in the dispenser .
18 SERVICE (cont.) CONTROL BOARD and LEVEL PROBE FIG. 11 CONTROL BOARD P1925 Location: The control board is located behind the rear panel, mounted on the back side of the hopper motor mount- ing panel. T est Procedure: Liquid Level Control 1. Disconnect the dispenser from the power source.
19 SERVICE (cont.) CONTROL BOARD and LEVEL PROBE (cont.) T est Procedure: Low Product Detect 1. Disconnect the dispenser from the power source. 2. Disconnect the twelve pin connector (J1) from the control board. 3. Check the voltage across pins 2 & 3 of the twelve pin connector on the wiring harness with a voltmeter .
20 SERVICE (cont.) CONTROL BOARD and LEVEL PROBE (cont.) Removal and Replacement: 1. Disconnect the dispenser from the power source. 2. Remove the two plugs (J1 and J7) from the main wiring harness, the potentiometer plug (J3), the photo transistor plug (J6), and the photo LED plug (J2) from the control board.
21 SERVICE (cont.) TEST/SERVICE SWITCH FIG. 13 TEST/SERVICE SWITCH P1923 Location: The TEST/SERVICE switch is located on the left front of the whipper motor mounting panel. T est Procedure: 1 . Disconnect the dispenser from the power source. 2. Disconnect the wires from the switch terminals.
22 SERVICE (cont.) FIG. 15 MAIN POWER ON/OFF SWITCH MAIN POWER ON/OFF SWITCH P1923 Location: The main power switch is located inside the dis- penser on the right of the whipper motor mounting panel. T est Procedure: 1. Disconnect the dispenser from the power source.
23 SERVICE (cont.) LAMP CORD ASSEMBL Y FIG. 17 LAMP CORD ASSY P1891 Location: The lamp cord assembly is located in the top of the dispenser . T est Procedures: 1. Disconnect the dispenser from the power source. 2. Unplug the lamp cord assembly from lamp cord connector assembly .
24 SERVICE (cont.) LAMP CORD CONNECTOR If continuity is present as described, the lamp cord connector is operating properly . If continuity is not present as described, replace the lamp cord connector . Removal and Replacement: 1. Disconnect the lamp cord assembly from the lamp cord connector .
25 SERVICE (cont.) If continuity is present as described, the lamp is op- erating properly . If continuity is not present as described, replace the lamp. Removal and Replacement: 1. Disconnect the lamp cord assembly from the lamp cord connector assembly in the top of the dispenser .
26 SERVICE (cont.) TRANSFORMER FIG. 23 TRANSFORMER P1930 Location: The tran sforme r is locate d unde r the hopp er sup port panel mounted to the left of the whipper motor .
27 SERVICE (cont.) POTENTIOMETER FIG. 24 POTENTIOMETER P1931 Location: The potentiometer is located under the hopper sup- port panel mounted to the left of the whipper motor and mounted on a bracket. Adjustments can be made by removing the 0.50” plug located on the whipper motor mounting panel.
28 SERVICE (cont.) HOPPER LEVEL INDICA TOR FIG. 25 HOPPER LEVEL INDICA TOR P1932 Location: The photo transistor and LED are located on the hopper side panels mounted just below the hopper guide rails. T est Procedures: Refer to the section CONTROL BOARD and LEVEL PROBE for test procedures.
29 SERVICE (cont.) HOPPER SWITCH FIG. 26 HOPPER SWITCH P1933 Location: The hopper switch is located under the hopper support panel. T est Procedures: 1. Disconnect the dispenser from the power source. 2. Open the dispenser door and remove the hopper .
30 SERVICE (cont.) DOOR SWITCH FIG. 28 DOOR SWITCH P1934 Location: The door switch is located on the right side panel under the housing top cover . T est Procedures: 1. Disconnect the dispenser from the power source. 2. Disconnect the twelve pin connector (J1) from the control board.
31 SERVICE (cont.) PRESSURE REGULA TOR and NEEDLE V AL VE FIG. 30 PRESSURE REGULA TOR and NEEDLE V AL VE P1935 Location: The pressure regulator and needle valve are located inside the rear panel at the bottom of the dispenser .
32 SERVICE (cont.) FIG. 31 DISPENSE SOLENOID V AL VE P1935 DISPENSE SOLENOID V AL VE Location: The dispense solenoid valve is located on the left side of the dispenser base inside of the rear cover . T est Procedures: 1. Disconnect the dispenser from the power source.
33 WIRING DIAGRAMS 29793 022007 120 VOL TS AC - 2 WIRE SINGLE PHASE, 60 HZ M BLK RED WHI/BRN BLK VIO J7 J1 J6 PNK C O N T R O L P C B O A R D WHI/RED WHI GRN GRN ORN ORN WHI BLK WHI/BLK WHI/GRN BLU/BL.
34 29793 022007 WIRING DIAGRAMS 230 VOL TS AC - 2 WIRE SINGLE PHASE, 50 HZ M BLK RED WHI/BRN BLK VIO J7 J1 J6 PNK C O N T R O L P C B O A R D WHI/RED WHI GRN GRN ORN ORN WHI BLK WHI/BLK WHI/GRN BLU/BL.
An important point after buying a device Bunn CDS-3 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Bunn CDS-3 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Bunn CDS-3 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn CDS-3 you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn CDS-3 will certainly help you make a decision on the purchase.
If you already are a holder of Bunn CDS-3, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Bunn CDS-3.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn CDS-3. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn CDS-3 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
