Douwe Egberts Cafitesse 700, Back Office Manual

Page: 162 / 265

July 2004
5A - 20
Functions - water system
Flow rate controller
• The flow rate controller is installed in the
inlet of the valve.
• It reduces the flow rate of the incoming water
to approx. 10 l/min (2.6 gal/min).
• This ensures that the boiler overflow can
cope with the incoming water volume in case
the water inlet regulator fails.
• The flow rate controller limits the flow rate
with an accuracy of
±
10%, independent of
the water mains pressure.
• Whenever the dynamic pressure drops below
0.8 bar, a sufficient flow rate is no longer
guaranteed.
• In this case, the water level in the boiler
cannot be controlled, particularly in case of
long or frequent beverage delivery.
• Consequences:
-
deviations in the dosing quantities
- possible blocking of delivery (see "Errors")
Filter sieve
• A removable filter sieve (1) in the valve inlet
spout (in front of the flow rate controller)
prevents dirt particles from entering. (Fig. 4)
• If larger quantities of dirt particles are found
regularly in the water mains, it is advisable to
install an additional filter sieve in the supply
line. (Fig. 4)
1
Fig. 4
Cafitesse 700 - Functions - water system