Instruction/ maintenance manual of the product H5X Bunn
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BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 FAX: (217) 529-6644 www .bunnomatic.com H5E H5X 10420.
2 CONTENTS Introduction ................................................. 2 Warranty ...................................................... 2 User Notices ................................................ 3 Electrical Requirements .....................
3 12593.0000 00831.0000 10044.0000 USER NOTICES The notices on this dispenser should be kept in good condition. Replace unreadable or damaged labels. 00656.
4 ELECTRICAL REQUIREMENTS CAUTION - The dispenser must be disconnected from the power source until specified in Initial Set-Up. This dispenser requires 2-wire, grounded service rated 120, 208, or 240 volts ac, 20 amp, single phase. (Refer to the dispenser’s dataplate for exact voltage requirement.
5 INITIAL SET -UP CAUTION - The dispenser must be disconnected from the power source throughout the initial set-up, except when specified in the instructions. 1. Remove the upper rear panel and place the tank heater switch in the “OFF” position and replace the panel.
6 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 ech- nical Service Department.
7 TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Automatic refill will not operate after drawing hot water . Water flows into the tank con- tinuously (Dispenser discon- nected from power sour ce). Water flows into the tank con- tinuously (Dispenser connected to power source).
8 TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Water boils continuously . Dispenser is making unusual noises. Ready indicator will not light. (when temperature is within 4 ° of its selected setting.) 1. T emperature control 2. Lime build-up 1.
9 SERVICE This section provides procedures for testing and replacing various major components used in this dis- penser should service become necessar y .
10 SERVICE (cont.) Electronic Controls Location: The electronic control assembly is located inside the rear of the dispenser . Access will also be needed to the temperature sensor , over flow tube temperature sensor , and liquid level probe located on the tank lid and to the triac assembly located beneath the tank.
11 SERVICE (cont.) Electronic Controls (cont.) Liquid Level Control Test Procedure 1. Disconnect the dispenser from the power sour ce. 2. Check the voltage across terminals 3 & 4 of the electronic control assembly with a voltmeter . Con- nect the dispenser to the power sour ce.
12 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 necessary .
13 SERVICE (cont.) Electronic Controls (cont.) If the indicator was on or blinking, the temperature sen- sor is operating properly , proceed to #7. If the indicator was off, check the sensor connection on the electronic control cir cuit board and/or replace the temperature sensor and the electronic control as- sembly .
14 SERVICE (cont.) Electronic Controls (cont.) Electronic Controls Removal and Replacement NOTE - Each electronic control assembly is calibrated to a temperature sensor probe. Both components MUST be replaced as a set. 1. Remove all wires from the electronic control as- sembly terminals.
15 10420 060305 SERVICE (cont.) Electronic Controls (cont.) Adjustments The H5X dispenser holds the water temperature at the threshhold of boiling. It is not adjustable by the user . The H5E dispenser is factory calibrated for the tem- perature specified on the data plate.
16 SERVICE (cont.) Limit Thermostat Location: The limit thermostat is located on the tank lid. T o test the limit thermostat, access will also be needed to the terminal block located at the rear of the dispenser . If voltage was present as described, reconnect the black wire and proceed to #5.
17 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, access may also be needed by removing the two screws attaching the electronic control assembly to its mount- ing bracket.
18 SERVICE (cont.) Solenoid Valve Location: The solenoid valve is located inside the rear of the dis- penser on the right side near the bottom. T o test the solenoid valve, access will also be needed to the electronic control assembly . 7. Check the solenoid valve for coil action.
19 SERVICE (cont.) Tank Heater Location: The tank heater is located in the tank lid. Test Procedure: 1. Disconnect the dispenser from the power sour ce. 2. Check the voltage across the terminals of the tank heater with a voltmeter . Connect the dispenser to the power sour ce.
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22 TANK HEATER SW ELECTRONIC CONTROL ASSY 230 VOLTS A C 2 WIRE SINGLE PHASE LIMIT THERMOSTAT SCHEMATIC WIRING DIAGRAM H5XA, H5EA BLU BLU 10332.0001B 09/02 © 2002 BUNN-O-MATIC CORPORATION L1 N WHI/VIO.
An important point after buying a device Bunn H5X (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 H5X 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 H5X - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn H5X you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn H5X will certainly help you make a decision on the purchase.
If you already are a holder of Bunn H5X, 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 H5X.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn H5X. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn H5X 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
