Douwe Egberts Cafitesse 100 Service Manual page 103

Service Manual Cafitesse 100
Flow rate controller
• The flow rate controller is installed on the
inlet side of the valve.
• It reduces the flow rate of the incoming
water to approx. 5 l/min.
• This ensures that the boiler overflow can
take the amount of incoming water if the
water inlet control fails.
• The flow rate controller limits the flow rate
with a precision of +/-10 % independent on
the water supply pressure.
• If the dynamic pressure falls below 0.8 bar
(11.6 psi) a sufficient flow rate cannot be
guaranteed.
• In this case the water level in the boiler
cannot be controlled any more, especially
when the beverage delivery takes too long
or with frequent beverage deliveries.
• Consequences:
• Deviations in the dosing quantity
• Possible blocking of the delivery (see
'error codes')
Filter sieve
• A removable filter sieve (1) in the valve
inlet spout (in front of the flow rate
controller) prevents dust particles from
entering. (Fig. 1)
• It is recommended to install an additional
filter sieve in the supply line when there are
regularly great amounts of dust particles in
the water supply lines. (Fig. 1)
07.2004
Functions - Water System
Fig. 1
1
5A - 21