Door Safety Interlock - Bunn IMIX-3S+ Installation & Operating Manual

DOOR SAFETY INTERLOCK

The dispenser is equipped with a door interlock safety switch, which prevents
the operator from being exposed to the moving parts of the espresso brewer
if the door is open.
The switch may be overridden by a qualified service technician by insert-
ing the service key, (BUNN PN 51953.0000) into the opening of the mixing
chamber panel, then turning 90° as shown in Figure 2.
DRAINING THE HOT WATER TANKS
1. Open the door and place the NORMAL/PROGRAM/RINSE switch in the PROGRAM position.
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 diagram below 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 auto-
matically 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.
Service Key
– to be performed by qualified service personnel only!
22
Figure 2
.
52384.0 101116