Bunn G9-2 HD-S - Manuals - manualsarea.com

Page 2 - The grind is preset at the factory to; fine; B U N N - O - M AT I C C O M M E R C I A L G R I N D E R WA R R A N T Y; Bunn shall not be liable for

2 CONTENTS Introduction .............................................................................. 2Warranty ................................................................................... 2User Notices .............................................................................. 3Electrica...

Page 3 - USER NOTICES; DISPLAY; Increase; HAZARDOUS VOLTAGE; An extension cord, when used, must be shorter; WARNING; DISPENSE TIME; W A R N I N G; HAZARDOUS VOLTAGE; PERSONAL INJURY; CAUTION

3 USER NOTICES Carefully read and follow all notices on the grinder and in this manual. They were written for your protection. All notices on the grinder are to be kept in good condition. Replace any unreadable or damaged labels. #05942.0000 DISPENSE TIME (Seconds) DISPLAY Increase Decrease Readout ...

Page 5 - Insert the funnel into the funnel rails and push until it stops.

5 CLEANING The use of a damp cloth rinsed in any mild, non-abrasive, liquid detergent is recommended for cleaning all surfaces on Bunn-O-Matic equipment. Care should be taken not to scratch the hopper or windows with anyabrasive material. Regular cleaning will keep your grinder looking new for years...

Page 6 - ADJUSTMENTS; B U N N

6 ADJUSTMENTS The grind can be set from very fine to very coarse. The amount may be adjusted for use in most commer- cial coffee brewers. The following procedures should be used to make adjustments. A change in the burr adjust-ment will also change the amount dispensed. Any adjustment of the burrs s...

Page 7 - TROUBLESHOOTING; Exercise extreme caution when servicing electrical equipment.; APPROXIMATE TIMER SETTINGS IN SECONDS; Weight; Repeat steps 4 thru 7 for the other hopper.

7 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 Tech-nical Service Department. • Inspection, testing, and repair of elec...

Page 9 - Probable Cause; Bottoms of hoppers; Remedy; Refer to

9 Probable Cause 3. Relay 1. Hoppers 2. Bottoms of hoppers Remedy Refer to Service - Relay for testing procedures. See page 14. Begin each grind cycle by visuallyinspecting the hoppers for amplesupplies of whole bean coffee. Foreign materials must not block theopenings at the bottom of the hoppers. ...

Page 10 - Contents; SERVICE

1 0 The rear panel is attached with eight 8-32 slot- ted head screws. The hopper assembly is attached with four 6- 32 slotted head screws with locking nuts located onthe sides of the housing near the center and rear.Removal of the hopper will also require disconnec-tion of the solenoid wires from th...

Page 12 - Motor

1 2 SERVICE (cont.) Motor Location: The motor is located in the upper wrapper. Test Procedure:1. Remove the cover plate located on the right sideof the housing. Press the red “Reset” button vis-ible through the opening. Listen carefully for a“click”. This resets the motor protection circuitand may i...

Page 13 - Remove and inspect the stationary burr for wear.; Replace if excessively worn or damaged.; Refer to the; GRN to Chasis Ground

1 3 SERVICE (cont.) Motor (cont.) Removal and Replacement - GRIND CHAMBER1. Remove the two 1/4"-20 screws holding the frontcover to the burr housing. Carefully remove theburr housing front cover. Inspect the adjustingscrew to see if the thrust plug is worn. Replace if excessively worn or damaged...

Page 14 - Relay

1 4 SERVICE (cont.) Relay Location: The relay is located on the timer bracket in the grinder base. The bracket can be removed by loosen-ing the two 8-32 slotted head screws beneath the timerdial. Test Procedure:1. Unplug the grinder. 2. Check the voltage across the red/black andwhite/green wires of ...

Page 15 - The slide plates are located on the solenoid; The slide plates must always remain flat for; With the solenoid mounting plate attached to; Remove the hopper from the grinder.

1 5 SERVICE (cont.) Slide Plate(s) Location: The slide plates are located on the solenoid mounting plate immediately beneath the hopper open-ings. The slide plates must always remain flat for proper operation. Test Procedure: With the solenoid mounting plate attached to the hopper, push the solenoid...

Page 16 - Snubber

1 6 SERVICE (cont.) Snubber Location: The snubber is located at the back of the motor attached to the right side of the wiring harness. Removal and Replacement:1. Remove the snubber wires from the motor ter-minals. 2. Cut the ties holding the snubber to the wiringharness. 3. Refer to the following i...

Page 17 - Timer; Left

1 7 Timer Location: The timer is located in the grinder base. Test Procedure:1. Unplug the grinder. 2. Check the voltage across contacts 1 & 2 of thelarger connector on the timer board with a volt-meter whenever the grinder is plugged-in. Plug-in the grinder. The indication must be 120 voltsac. ...

Page 19 - Digital Timer

1 9 P614 1 8 P4 P1 1 8 3 1 P2 P3 1 11 BLK to CordsetBLK to Off/On/Start SwitchWHI/BLK to CordsetWHI/GRN to Relay CoilWHI/ORN to Left Solenoid WHI/YEL to Right SolenoidWHI/RED to Off/On/Start SwitchWHI/RED to Relay ContactRED/BLK to Relay CoilRED/BLK to Left Solenoid (P1-8) BLU to Off/On/Start Switch...

Page 20 - SINGLE PHASE

2 0 BLU V I O Y E L G R YT A NO R A W H I / B L K RED/BLK W H I / G R NW H I / O R A W H I / Y E L W H I / R E D W H I / B L K BLK W H I / R E D W H I / B L U M K1 SOL 1 RT SOL 2 LT SNUBBER L2 L1 W H I / B L U W H I / B L K Y E L 120 VOLTS AC 2 WIRE SINGLE PHASE 60 HZ 10756.0000G 3/97 © 1993 BUNN-O-...