Instruction/ maintenance manual of the product H5M Bunn
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H5M 10267.0000D 7/00 © 1988 BUNN-O-MATIC CORPORATION B UNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 BU N N ® OPERA TING .
2 CONTENTS Introduction ................................................. 2 Warranty ...................................................... 2 User Notices ................................................ 3 Electrical Requirements .....................
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4 ELECTRICAL REQUIREMENTS CAUTION - The dispenser must be disconnected from the power source until specified in Initial Set-Up. The H5M dispenser requires 2-wire, grounded service rated 120, 208, or 240 volts ac, 20 amp, single phase. The H5MA, 230V-CE dispenser requires 2-wire, grounded service rated 230 volts ac, 40 amp, single phase, 50/ 60Hz .
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 rotate the control thermostat knob fully counterclockwise to the “ OFF ” position and r eplace 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 source). 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 .
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12 SERVICE (cont.) Solenoid Valve Location: The solenoid valve is located inside the rear of the dis- penser on the right side near the bottom. 6. Check the solenoid valve for coil action.
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14 FIG. 10 THERMOSTAT WIRING BLU/BLK to Limit Thermostat BLK to T erminal Block P1782 SERVICE (cont.) Thermostat Location: The mechanical thermostat is located inside the upper rear panel. T o test the thermostat, access will also be needed to the terminal block located inside the bottom access panel.
15 SERVICE (cont.) Liquid Level Board Location: The liquid level board is located inside the lower panel. Test Procedure: 1. Disconnect the dispenser from the power sour ce. 2. Remove the blue wire from terminal 1 and the pink wire from terminal 4 of the circuit board.
16 15. Move the probe's flat end to the dispenser hous- ing. The indication must be 0. 16. Move the probe's flat end away from the dispenser housing. The indication should again be: a.) 100 to 120 volts ac for 100 to 120 volt models, b.) 200 to 240 volts ac for 200 to 240 volt models, c.
17 Location: The contactor is located on the component bracket inside the lower rear panel. T est Pr ocedures: 1. Disconnect the dispenser from the power sour ce. 2. Disconnect the black wire from the contactor coil to the limit thermostat and black wire from the red wire on the main harness on two wire 240V mod- els.
18 BLK to left Tank Heater RED to Terminal Block(L2) BLK to Terminal Block (L1) RED to Right Tank Heater BLK to Limit Thermostat RED from Main Harness P1725 FIG.14 CONTACTOR WIRING contactor . Removal and Replacement: 1. Disconnect all the wires from the contactor .
19 4 3 12 LIQUID LEVEL BOARD BLU/BLK TANK HEATER 120 VOLTS A C 2 WIRE SINGLE PHASE 10243.0000D 1/99 © 1987 BUNN-O-MATIC CORPORATION SCHEMATIC WIRING DIAGRAM H5M L1 N BLK BLK BLK SOL WHI GREEN BLU WHI.
20 WIRING DIAGRAMS 4 3 12 LIQUID LEVEL BOARD BLK SW& THERMOSTAT 10262.0001A 11/99 © 1999 BUNN-O-MATIC CORPORATION SCHEMATIC WIRING DIAGRAM H5MA, 230V CE L1 L2 BLK SOL GREEN BLU BLK BLK (PROBE) P N K RED RED RED BLU/BLK BLK RED-12 BLK-12 N.O. N.O.
An important point after buying a device Bunn H5M (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 H5M 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 H5M - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn H5M you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn H5M will certainly help you make a decision on the purchase.
If you already are a holder of Bunn H5M, 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 H5M.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn H5M. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn H5M 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
