Instruction/ maintenance manual of the product H5E Bunn
Go to page of 24
H10X/H5X H5E/DV PC H5 ELEMENT With Digital Control Board SER VICE MANU AL BUNN-O-MA TIC CORPORA TION POST OFFICE BO X 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 .
2 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 specifi ed below: 2 years parts and 1 year labor . 2) Electronic circuit and/or control boards: parts and labor for 3 years.
3 WARNING - Inspection, testing, and repair of electrical equipment should be performed only by qualifi ed ser vice personnel. Disconnect the dispenser fromthe power source when servicing, except when electrical tests are required and the test procedure specifi cally states to connect the dispenser to the power sour ce.
4 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.
5 TROUBLESHOOTING (cont.) Problem Probable Cause Remedy Equipment will not operate (cont.) Automatic refi ll will not oper - ate after drawing hot water . Water fl ows into the tank con- tinuously (Dispenser discon- nected from power source). Water fl ows into the tank con- tinuously (Dispenser connect- ed to power source).
6 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.
7 Faceplate Removal - H5 ELEMENT : After removing top cover , remove the two upper screws securing the faceplate. Carefully lift faceplate straight up until the three lower screws clear the key holes.
8 SERVICE Electronic Controls FIG. 8a ELECTRONIC CONTROL P4093.35 V oltage present at Solenoid V alve ? V oltage present at Solenoid V alve ? Overflow Cup Full ? Remove Power Disconnect Level Probe Re.
9 SERVICE (cont.) Electronic Controls (cont.) Liquid Level Control T est Procedure 1. Disconnect the dispenser from the power sour ce. 2. Check the voltage across terminals 3 & 4 of the electronic control board with a voltmeter . Connect the dispenser to the power source.
10 Electronic Controls (cont.) 7. Reconnect the pink wire to terminal 5 of the elec- tronic control assembly . 8. Loosen the compression fi tting, remove the probe from the tank lid, and inspect it for mineral depos- its. Replace it if necessary . Keep the exposed ends of the probe away from any metal surface of the dispenser .
11 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 temperature sensor for evaluation and proceed to #9.
12 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.
13 SERVICE (cont.) Safety Overfl ow Switch Location: The safety overfl ow switch is located inside the rear of the dispenser inside the copper overfl ow cup. For testing or removal of the safety overfl ow switch, access may also be needed by removing the two screws attaching the electronic control assembly to its mount- ing bracket.
14 SERVICE (cont.) Solenoid Valve (Late Models) 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. sound after approximately 5 seconds, as the coil magnet attracts the plunger .
15 Solenoid Valve (Early Models) Location: The solenoid valve is located behind the large access panel on the left side of the dispenser . T o test the solenoid valve, access will also be needed to the electronic control board. BUNN 90 psig max operating pressure Strainer/Flow Control # 22300.
16 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 sour ce. 2. Check the voltage across the terminals of the tank heater with a voltmeter . Connect the dispenser to the power source.
Steam Sensor (Thermistor) Location: The thermistor is located on the end of the overfl ow tube above the overfl ow cup. T o test the thermistor , access will also be needed to the electronic control board. SERVICE (cont.) P1993 FIG. 17b LOCA TION H 10X P1993 FIG.
SERVICE (cont.) Dispense Valve (PC Only) Location: The Dispense Valve is located behind control panel. T est Procedures: 1. Check the valve for coil action. T urn on the valve with the dispense button. Listen carefully in the vicinity of the dispense valve for a click as the coil pulls the plunger in.
42311 071310 19 RELA Y N.O. COM 3 1 5 4 2 F ACTORY J1-1 J1-5 H5-PC NO JUMPER Early H5E, H5X, H10X Install jumper thru ver . 1.04 J3-1 J3-5 J5-1 J4-1 J6-1 NO TE: no jumper used on an y Model star ting with ver .
42311 071310 20 230V AC 2 WIRE + GND SINGLE PHASE RELA Y N.O. COM 3 1 5 4 2 F ACTORY J1-1 J1-5 H5-PC NO JUMPER Early H5E, H5X, H10X Install jumper thru ver . 1.04 J3-1 J3-5 J5-1 J4-1 J6-1 NO TE: no jumper used on an y Model star ting with ver . 1.08 J2 J7 MAIN CONTROL BOARD 1 2 3 4 + - + - USED ON H5X ONL Y PINK-22 BLK-24 WHI-24 T ANK t° 39333.
42311 071310 21 BLU-14 BLK-14 BLK-14 T ANK HEA TER BLK-14 LIMIT THERMOST A T 200-240 VOL TS AC 2 WIRE + GND SINGLE PHASE USED ON H5X ONL Y RELA Y N.O. COM 3 1 5 4 2 F ACT ORY J1-1 J1-5 H5-PC NO JUMPER Early H5E, H5X, H10X Install jumper thru ver . 1.04 J3-1 J3-5 J5-1 J4-1 J6-1 NO TE: no jumper used on any Model star ting with ver .
42311 071310 22 USED ON H5X ONL Y RELA Y N.O. COM 3 1 5 4 2 F ACTORY J1-1 J1-5 H5-PC NO JUMPER Early H5E, H5X, H10X Install jumper thru ver . 1.04 J3-1 J3-5 J5-1 J4-1 J6-1 NO TE: no jumper used on any Model star ting with ver .
42311 050511 23 RELA Y 3 1 5 4 2 J1-1 J1-5 J3-1 J3-5 J5-1 J4-1 J6-1 J7 PINK-22 GRN-18 WHI/BLU-18 T ANK t° MAIN CONTROL BOARD 1 2 3 4 0-13.8V AC 0-3.3VDC 0-3.
42311 050511 24 RELA Y J1-1 J1-5 J3-1 J2-1 J4-1 J2 MAIN CONTROL BOARD 1 2 3 4 + - + - USED ON H5X ONL Y 100-240V AC 2 WIRE + GND SINGLE PHASE PINK BLK WHI T ANK t° 44657.
An important point after buying a device Bunn H5E (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 H5E 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 H5E - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Bunn H5E you will learn all the available features of the product, as well as information on its operation. The information that you get Bunn H5E will certainly help you make a decision on the purchase.
If you already are a holder of Bunn H5E, 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 H5E.
However, one of the most important roles played by the user manual is to help in solving problems with Bunn H5E. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Bunn H5E 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
