background image

Page 17

SERVICE (cont.)

ON/OFF SWITCH

FIG. 6 ON/OFF SWITCH

P1187.40

Location:

The ON/OFF switch is located in the front of the

hood, above and to the left of the brew funnel.

Test Procedure:
1. Disconnect the brewer from the power source.
2. Remove the black and white/violet wires from the

switch terminals.

3. With a voltmeter, check the voltage across the

black wire removed from the ON/OFF switch and
the white wire remaining on the switch terminal.

4. Connect the brewer to the power source. The in-

dication must be 120 volts ac for two wire 120
volt models.

5. Disconnect the brewer from the power source.

If voltage is present as described, proceed to #6.
If voltage is not present as described, refer to the 

Wir-

ing Diagrams and check the wiring harness.

6. Check for continuity across the center and end

terminals of the top row when the switch is in the
“ON” position.

If continuity is present as described, replace the wires,
the switch is operating properly.
If continuity is not present as described, replace the
switch.

Removal and Replacement:
1. Remove the wires from the switch terminals.
2. Compress the clips inside the hood and gently

push the switch through the opening.

3. Push the new switch into the opening and spread

the clips to hold the switch captive in the hood.

4. Refer to FIG. 7 when reconnecting the wires.

FIG.7 ON/OFF SWITCH TERMINALS

P1801

BLK to Power Cord

WHI to Power Cord

WHI/VIO to
Control Board J1-8

29460  061599

Содержание TU3Q-EZ

Страница 1: ...UNN BUNN O MATIC CORPORATION TU3Q EZ POST OFFICE BOX 3227 SPRINGFIELD ILLINOIS 62708 3227 TELEPHONE 217 529 6601 FAX 217 529 6644 29460 0000C 8 00 1999 Bunn O Matic Corporation OPERATING SERVICE MANUA...

Страница 2: ...s of Bunn are not authorized to make modifications to this warranty or to make additional warranties that are binding on Bunn Accordingly statements by such individuals whether oral or written do not...

Страница 3: ...0000 USER NOTICES Carefully read and follow all notices on the equipment and in this manual They were written for your protec tion All notices on the equipment should be kept in good condition Replace...

Страница 4: ...pressure between 20 138 and 90 psi 620 kPa from a 1 2 or larger supply line A shut off valve should be installed in the line before the brewer Install a regulator in the line when pressure is greater...

Страница 5: ...and momentarily press the START switch 5 Water will flow into the tank and dispenser for approximately three and one half minutes Empty the dis penser when the first cycle stops and press the START sw...

Страница 6: ...he sprayhead The holes must be open and clear of any mineral deposits Wipe the sprayhead panel clean with a damp cloth 3 Insert the deliming spring into the sprayhead fitting until no more than two in...

Страница 7: ...lace the ON OFF switch in the ON upper position Press and hold the START switch until you hear the solenoid click on and off three times approximately 5 seconds then release the START switch immediate...

Страница 8: ...water The use of two wrenches is recommended whenever plumbing fittings are tightened or loosened This will help to avoid twists and kinks in the tubing Make certain that all plumbing connections are...

Страница 9: ...block The indicator lamp must be lit Refer to Service Start Switch for testing procedures See page 18 Allow brewer to heat until ready lamp is lit or disable the brew lock out feature See page 7 Refe...

Страница 10: ...posits Delime as required Refer to Service Brew Solenoid Valve for testing procedures See page 15 A Direction of flow arrow must be pointing towards brewer B Remove strainer flow control and check fo...

Страница 11: ...ing must not be less than 5 F 3 C below set temperature Ad just the temperature setting to in crease the water temperature Re fer to Adjustments and Optional Settings See page 7 BUNN paper filters mus...

Страница 12: ...Water must be within one inch from top of tank Refer to Service Temperature Probe for testing procedures See page 20 Refer to Service Limit Thermostat for testing procedures See page 16 Refer to Serv...

Страница 13: ...t off Level probe dry for 7 minutes after fill valve is energized Shorting pin on J6 connector of control board not on correct set of pins See page 7 Level probe wiring Temperature probe wiring Fill v...

Страница 14: ...COMPONENT ACCESS WARNING Disconnect the brewer from the power source before the removal of any panel or the replace ment of any component All components are accessible by the removal of the top cover...

Страница 15: ...the power source With ON OFF switch in the ON upper position press start switch and listen carefully in the vicinity of the solenoid valve for a clicking sound as the coil magnet attracts 7 Disconnect...

Страница 16: ...ring harness 4 Remove the black wire from the limit thermostat 5 With a voltmeter check the voltage across the ex posed terminal of the limit thermostat and the white wire on the tank heater terminal...

Страница 17: ...present as described proceed to 6 If voltage is not present as described refer to the Wir ing Diagrams and check the wiring harness 6 Check for continuity across the center and end terminals of the to...

Страница 18: ...switch is held in the lower po sition Continuity must not be present across these terminals in the upper position If continuity is present as described the switch is operating properly If continuity...

Страница 19: ...the sheath Removal and Replacement 1 Disconnect the black wire and the white wire from the tank heater terminals 2 Remove sprayhead and the hex nut securing the sprayhead tube to the hood Set aside f...

Страница 20: ...l and Replacement 1 Disconnect the brewer from the power source 2 Pull the existing probe from the tank lid 3 Cut the white and black wires close to the probe and discard the probe Do not disconnect t...

Страница 21: ...8 pin connector J 1 and the 6 pin connector J 5 from the main wiring harness 4 Disconnect the 2 pin connector J 7 from the ready indicator LED FIG 15 BOARD WIRING P1803 75 5 Remove the four 6 32 screw...

Страница 22: ...Page 22 29460 082300...

Отзывы: