Bunn DUAL GPR-DBC WITH SMART FUNNEL 41343 - Manual (Page 37)

Page 37
PROGRAMMING FUNCTIONS - (cont.)
SERVICE TOOLS (cont.)
6. Press and release YES. The display should read:
BREW VALVE on SINGLE brewers.
LEFT BREW VALVE on DUAL brewers.
7. To test BREW VALVE, press ON. If the brew valve
is functional, water should flow from the sprayhead
(left side on DUAL brewers).
8. Press OFF to end flow of water.
9. Press NEXT to advance to the next component to
be tested.
NOTE: To bypass testing any component, press NEXT
to advance to the next one, without testing the previ-
ous component.
10. To test BYPASS (LEFT BYPASS on DUAL brewers),
press ON. If the bypass valve is functional, water
should run from the brew bypass.
11. Press OFF to end flow of water.
12. Press NEXT to advance to the next component to
be tested.
13. To test FUNNEL LOCK (LEFT FUNNEL LOCK on
DUAL brewers), press ON. If the funnel lock is
functional, the lock will come down to hold the
funnel in place.
14. Press OFF to retract the funnel lock.
15. Press NEXT to advance to the next component to
be tested.
16. To test WARMER (LEFT WARMER on DUAL brew-
ers), press ON. If the warmer is functional it will
begin to heat up.
17. Press OFF to turn off warmer.
18. Press NEXT to advance to the next component to
be tested. For DUAL brewers follow steps 7 through
17 to test the right side components.
19. To test REFILL VALVE, press ON. If the refill valve
is functional, the sound of the valve operating will
be heard.
20. Press OFF to end testing of refill valve.
21. Press NEXT to advance to the next component to
be tested.
22. To test TANK HEATERS, connect a voltmeter across
each of the tank heaters to check for voltage.
23. Press ON. The correct voltage should be present
at the heater terminals.
24. Press OFF to end testing of the tank heaters.
NOTE: The tank heater will automatically turn off if
left on too long.
25. After testing the tank heater, press NEXT to advance
to the next test.
26. The HEATER CONTACTOR is used only on certain
models. Check the machine schematic to see if the
contactor is present. Connect a voltmeter across a
tank heater that is operated by the contactor and
press ON to check that correct voltage is present.
Press OFF and confirm the voltage is zero.
27. Press NEXT to return to TEST OUTPUTS.
28. To exit SERVICE TOOLS, press and release the
ON/OFF switch (either on DUAL brewers) located
on the front switch panel. This will return to the
MAIN SCREEN.
Procedure to test switches:
This function allows the operator to test the opera-
tion of the individual switches on the front panel.
1. Place brew funnel(s) into rails of the brewer.
2. Place a GPR beneath the brew funnel(s).
3. Press and hold upper right hidden switch until the
display reads UNITS. Release switch. Continue
pressing and releasing upper right hidden switch
until SERVICE TOOLS appears.
4. Press YES to run tests on various components
and outputs within the brewer. (Pressing NO will
exit this function and advance to the next function
screen.)
5. The display should read TEST OUTPUTS.
6. In TEST OUTPUTS screen, press NO. This advances
to TEST SWITCHES.
7. Pressing NO in this screen will advance to the
next function. Press YES in the TEST SWITCHES
screen to test the switches. The display will read
NOTHING PRESSED.
8. From this screen, press any of the switches on the
front of the brewer. While the switch is pressed,
the display shows the name of that switch. If the
name does not appear, or if it remains after the
switch has been released, the switch is defective.
Each switch can be tested in this manner.
9. After all switches have been tested, press and re-
lease the upper right hidden switche located on the
front switch panel. This will exit TEST SWITCHES
and return to the MAIN SCREEN.
41343 080108