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Bunn H5X - page 1
OPERA TING & SER VICE MANUAL BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 T o ensure you have the latest revision of the manual or to obtain the illustrated parts catalog, please visit the Bunn-O-Matic website, at www .bunn.com. This is absolutely FREE, and the quick ...
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Bunn H5X - page 2
2 10420.1 012609 BUNN-O-MA TIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specified below: 2 years parts and 1 year labor . 2) Electronic circuit and/or control boards: parts and labor for 3 years. 3) Compressors on refrigeration equipment: 5 years pa ...
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Bunn H5X - page 3
3 CONTENTS Warranty .......................................................2 Introduction ..................................................3 User Notices .................................................3 Electrical Requirements ................................4 Plumbing Requirements ...............................5 Initial Set-Up ................ ...
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Bunn H5X - page 4
4 ELECTRICAL REQUIREMENTS WARNING - The dispenser must be disconnected from the power sour ce until specified in Initial Set-Up. Refer to Data Plate on the Brewer , and local/national electrical codes to determine circuit requirements. 10420.1 040309 208 & 240 volt ac models Note: This electrical service con- sists of 2 current carrying conduc ...
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Bunn H5X - page 5
5 INITIAL SET -UP CAUTION - The dispenser must be disconnected from the power sour ce throughout the initial set-up, except when specified in the instruc- tions. 1. Connect dispenser to the power source and turn on water supply . 2. Place master ON/OFF switch (if dispenser is equipped with a master switch) in the ON position. 3. Water will automat ...
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Bunn H5X - page 6
6 PROGRAMMING When power is applied to the dispenser , the display located on the bottom of the main circuit board will show the revision level of the software for 5 seconds, and then go to (-). While the tank is filling, the display will read (FIL). When the tank is full the display will return to (-). INITIAL PROGRAMMING OF THE CONTROL BOARD 1. ...
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Bunn H5X - page 7
7 LEVEL 2 PROGRAMMING F AHRENHEIT OR CENTIGRADE SELECTION, & RESTORING F ACTORY DEF AUL TS 1. T o enter Level 2 Programming, press and hold the center button until H2 appears on the display (approximately 6 seconds). Release the center button, The display will show either F AH (Degrees in Fahrenheit) or CEn (Degrees in Centigrade). 2. Press and ...
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Bunn H5X - page 8
8 DRAINING THE DISPENSER CAUTION - The dispenser must be disconnected from the power source throughout these steps. 1. Disconnect the dispenser from the power source. 2. Shut-off and disconnect the incoming water supply 3. Remove the 4-40 screws at the sides of the top panel. 4. Gently remove one of the grommets from the tank lid. 5. Insert a tube ...
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Bunn H5X - page 9
9 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 Ser vice Department. • Inspection, testing, and repairof electricalequipment should? ...
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Bunn H5X - page 10
10 TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Equipment will not operate (cont.) Automatic refill will not oper - ate after drawing hot water . Water flows into the tank con- tinuously (Dispenser discon- nected from power source). Water flows into the tank con- tinuously (Dispenser connect- ed to power source). Water is cold. 2. Safet ...
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Bunn H5X - page 11
11 TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Water boils continuously . Dispenser is making unusual noises. Ready indicator will not light. 1. T emperature control 2. Lime build-up 1. Plumbing lines 3. Water supply 1. T emperature control 2. Ready Indicator LED Refer to Service – electronic controls for testing pr ...
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Bunn H5X - page 12
12 SERVICE This section provides procedures for testing and replacing various major components used in this dispenser should ser vice become necessar y . Refer to T roubleshooting for assistance in determining the cause of any problem. Component Access WARNING – Disconnect the dispenser from the power source before the removal of any panel or the ...
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Bunn H5X - page 13
13 SERVICE (cont.) Electronic Controls Location: The electronic control board is located inside the rear of the dispenser . Access will also be needed to the temp eratur e senso r , overflo w tube temper ature senso r , and liquid level probe located on the tank lid. General: This system controls the liquid level and water temperature of the dispe ...
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Bunn H5X - page 14
14 SERVICE (cont.) Electronic Controls (cont.) Liquid Level Control T est Procedure 1. Disconnect the dispenser from the power source. 2. Check the voltage across terminals 3 & 4 of the electronic control board with a voltmeter . Connect the dispenser to the power source. The indication must be: a.) 100 to 120 volts ac for 100 to 120 volt model ...
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Bunn H5X - page 15
15 SERVICE (cont.) Electronic Controls (cont.) 7. Reconnect the pink wire to terminal 5 of the elec- tronic control assembly . 8. Loosen the compression fitting, remove the probe from the tank lid, and inspect it for mineral depos- its. Replace it if necessar y . Keep the exposed ends of the probe away from any metal sur face of the dispenser . 9. ...
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Bunn H5X - page 16
16 SERVICE (cont.) Electronic Controls (cont.) If voltage was present as described, the temperature control of the system is operating properly . If voltage was not present as described, contact Bunn- O-Matic to order an electronic control board and tem- perature sensor for evaluation and proceed to #9. 6. Replace the electronic control board. 7. C ...
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Bunn H5X - page 17
17 T his equipment is to be instal le d to co mp ly with the Basic Plumbing Code of the Building Offic ia ls and Code Administrato rs International, Inc. (B OCA) and the Food Service Sanitation Manual of the Food and Drug Administr atio n (FDA ). SERVICE (cont.) Limit Thermostat Location: The limit thermostat is located on the tank lid. T o test th ...
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Bunn H5X - page 18
18 SERVICE (cont.) Safety Overflow Switch Location: The safety overflow switch is located inside the rear of the dispenser inside the copper overflow cup. For testing or removal of the safety overflow switch, acc ess may als o be need ed by rem ovin g the two scr ews attaching the electronic control assembly to its mount - ing bracket. T est Pr ...
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Bunn H5X - page 19
19 SERVICE (cont.) Solenoid Valve Location: The solenoid valve is located inside the rear of the dispenser on the right side near the bottom. T o test the solenoid valve, access will also be needed to the electronic control board. 7. Check the solenoid valve for coil action. Connect the dispenser to the power source. Listen carefully in the vicinit ...
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Bunn H5X - page 20
20 SERVICE (cont.) T ank Heater Location: The tank heater is located in the tank lid. T est Procedure: 1. Disconnect the dispenser from the power source. 2. Check the voltage across the terminals of the tank heater with a voltmeter . Connect the dispenser to the power source. The indication must be: a.) 100 to 120 volts ac for 100 to 120 volt model ...
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Bunn H5X - page 21
21 10420.1 040309 GRN BLK RED RED 100-120 VOL TS AC 2 WIRE + GND SINGLE PHASE 40708.0000A 04/08 © 2008 BUNN-O-MA TIC CORPORATION SOL SCHEMA TIC WIRING DIAGRAM H5E GRN REFILL PROBE PNK MAIN RELA Y CONTROL BOARD WHI WHI/BLU BLK OVERFLOW PROTECTION SWITCH 3 1 5 4 2 WHI/VIO WHI/VIO BLK BLU T ANK HEA TER BLK WHI WHI BLK TEMP . SENSOR LIMIT THERMOS TAT ...
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Bunn H5X - page 22
22 10420.1 040309 GRN BLK RED RED 100-120 VOL TS AC 2 WIRE + GND SINGLE PHASE 40709.0000A 04/08 © 2008 BUNN-O-MA TIC CORPORATION SOL SCHEMA TIC WIRING DIAGRAM H5X GRN REFILL PROBE PNK MAIN RELA Y CONTROL BOARD WHI WHI/BLU BLK OVERFLOW PROTECTION SWITCH 3 1 5 4 2 WHI/VIO WHI/VIO BLK BLU T ANK HEA TER BLK WHI WHI BLK GRY GRY t ° STEAM SENSOR TEMP . ...
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Bunn H5X - page 23
23 10420.1 040309 GRN BLK RED RED 200-240 VOL TS AC 2 WIRE + GND SINGLE PHASE 40710.0000A 04/08 © 2008 BUNN-O-MA TIC CORPORATION SOL SCHEMA TIC WIRING DIAGRAM H5E GRN REFILL PROBE PNK MAIN RELA Y CONTROL BOARD RED WHI/BLU BLK OVERFLOW PROTECTION SWITCH 3 1 5 4 2 WHI/VIO WHI/VIO BLK BLU T ANK HEA TER BLK RED WHI BLK TEMP . SENSOR LIMIT THERMOS TAT ...
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Bunn H5X - page 24
24 GRN BLK RED RED 200-240 VOL TS AC 2 WIRE + GND SINGLE PHASE 40711.0000A 04/08 © 2008 BUNN-O-MA TIC CORPORATION SOL SCHEMA TIC WIRING DIAGRAM H5X GRN REFILL PROBE PNK MAIN RELA Y CONTROL BOARD RED WHI/BLU BLK OVERFLOW PROTECTION SWITCH 3 1 5 4 2 WHI/VIO WHI/VIO BLK BLU T ANK HEA TER BLK RED WHI BLK GRY GRY t ° STEAM SENSOR TEMP . SENSOR LIMIT T ...
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Bunn H5X - page 25
25 GRN BLK BLK BLK RED RED RED RED 230 VOL TS AC 2 WIRE + GND SINGLE PHASE 40712.0000D 04/09 © 2008 BUNN-O-MA TIC CORPORATION SOL SCHEMA TIC WIRING DIAGRAM H5XA, H5EA GRN/YEL REFILL H5XA only PROBE PNK RELA Y RED WHI/BLU BLK OVERFLOW PROTECTION SWITCH 3 1 5 4 2 WHI/VIO WHI/VIO BLU T ANK HEA TER BLK RED WHI BLK GRY GRY t ° STEAM SENSOR TEMP . SENS ...
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