Draining Hot Water Tanks - Bunn Crescendo Programming Manual

DRAINING HOT WATER TANKS

1. Open the door and place the NORMAL/PROGRAM/RINSE switch
in the PROGRAM position. (Figure 1).
2. Close the door and place a minimum two liter container under the
dispense nozzles.
3. Press the Large Cup button until the screen reads DIAGNOSTICS.
4. Press, in sequence, buttons 3, 7, 4 and 1. See Figure 2 for button
number designations.
5. The screen will display SYSTEM WET TEST. Press the button
under YES.
6. Press the button under COOL ESP TANK.
7. Press the button under START in the COOL ESP TANK screen.
8. The pump will begin running, and hot water will dispense into the
container. After 4 minutes, the pump will automatically stop.
9. In the ESP TANK COOL? screen, press the button under YES.
NOTE: Dispenser must be disconnected from the power source
in steps 10 through 24.
10. Immediately disconnect the dispenser from the power source, and
water supply.
11. Let the water in the soluble tank cool before draining.
12. Remove left side panel.
13. Pull the drain tube out of the dispenser and direct it into a drain or
a container large enough to hold the volume of water in the tank,
approx 6 liter (1.5 gallon).
14. Remove the plug from end of tube.
15. After the tank has drained, replace the plug in the end of the tube.
16. Remove the tube from the connector in the bottom of the espresso
tank.
17. Swivel the tube towards the outside of the machine.
18. Empty the container used to capture the hot water from the tank,
and place it on the right side of the machine.
19. Insert a 6mm OD tube into the bottom tank fitting, place the other
end into the container.
20. Use a 4mm hex wrench to loosen the plug on the top of the
espresso tank, until the tank begins to drain.
21. After the tank is drained, retighten the plug.
22. Remove the drain tube from the bottom tank fitting.
23. Rotate the fitting towards the inside of the tank. Compressing the
release sleeve on the fitting, fully insert the pump tube.
24. Replace the left and right side panels.
OPERATING CONTROLS AND INTERFACE
To be performed by qualified service personnel only!
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18
Figure 1
1
3
7
Figure 2
4