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Version 3.3 / November 2016
3.4.13 Flot chamber, pump and boiler
а. Flot chamber
Figure 50
Figure 51
Figure 50 and 51
1. Pin switch of the water level sensor
2. Float
3. Water inlet connector
4. Water outlet to the boiler
5. Consumption meter
6. Water filter
1
2
3
4
5
6
The float chamber (see figures 50 and 51) retains the minimum
required quantity of water, which is necessary to keep the hydraulic
system alive and to ensure the dispensing of drinks, in case the
water supply runs dry.
Equipped with a sensor it determines the state of the chamber:
filled or empty. During the functioning of the internal pump, the wa
-
ter level gradually falls inside the float chamber until reaching the
set level, where the sensor reads as if the chamber is empty. At this
moment the water from external source (the valve is opened) or in-
ternal source (the autonomous mode pump turns ON) starts filling
the float chamber, until the water level sensor determines that the
chamber was full. This also forms a permanent water lock. In case
of shut down of external water supply or depletion of water in the
internal source, the float chamber will not be filled within the set
time interval, which will cause the vending machine to be blocked.
The water for the preparation of drinks is supplied by the follow-
ing group of devices: boiler, which heats the water; boiler pump,
which pumps the water into the hydraulic circuit; float chamber,
which helps avoid air bubbles and blocks from entering the hydrau-
lic system.
