Temperature Regulation; Dispensing Valves - Animo OptiBean Service Book

OptiBean (XL)
Dry boil protection
This double pole dry boil protection [1.4] protects
the heating element [1.3] against dry boiling. When
the switch detects a temperature above 135°C both
contacts switch off and disconnect both heating
connection from the electric mains. Reset is only
possible after de boiler has cooled down and both
contacts are manually reset by hand.
WARNING; Always disconnect the machine from
the mains, the reset buttons are life!
If the dry boiler protection [1.4] is activated a Error 21
shall appear on the display after 6 minutes.
The reason from activating the protection can be
caused by air in the waters main which is transported to
the boiler, or an other malfunction of the heating system

Temperature regulation

The heating element [1.5] is turned on when the water
temperature falls below the temperature setting. The
temperature in the water reservoir is measured using an
NTC precision sensor [1.4] mounted trough the wall of
the boiler.
The heating element always switches off when the
maximum boiler temperature of 99ÛC is reached.
Reset
24 2013/08 Rev. 0.5
OptiBean (XL)

1.5.1 Dispensing valves

The dispensing valves [2] used in the OptiBean are all the same and are so called 3-way valves.
Brewer valve DV1, mixer valve DV2 and hot water valve DV4 are used as N.C. valve (Normally
Closed). The connection P [2.1] is connected to the pressurised side. At a de-energized valve, outlet A
[2.7] is in open connection with the outlet R [2.2], so the tubes towards the mixer and hotwater outlet
always runs empty. During a drink selection one of the dispensing valves [DV] is ACTIVATED and
opens. Outlet R [2.2] closes and pressurised water À ow from connection P to A.
The (expansion) dispensing valve DV6 is build-in as a N.O. valve (Normally Open). Connection A [2.7]
is connected to the pressurised side. Expansion water from the boiler can escape from connection R
[2.2]. The valve DV6 will be closed when a coffee (10 bar) is made.
Major parts
1. Boiler system
2. Dispensing valve 12 bar (3-2 way)
2.1 Inlet (P)
2.2 Aeration (R)
2.3 Coil
2.4 Plunger
2.5 Seal
2.6 Body
2.7 Outlet (A)
2
1
2.1
Printed-on black arrow: Flow in direction of the arrow on the valve body
White arrow: Flow against the arrow on the valve body
2013/08 Rev. 0.5
Technical data Material
1,1 Liter AISI 316
art.no. 1000699
Ø 6mm push ¿ t
M5
24Vdc - 8,3W - 100% ED
St.St.
EPDM
DN 1,5 (Diameter Nominal) PPSU
Ø 6mm push ¿ t VMQ
2.2
R
2.3
2.4
2.5
2.6
A
25
GB
2.7
P