E Service / Repair

DELTABOOSTER_GB01
Function
The diagram illustrates the control functions of the water tank in some given situations -
a, b, c, d, e.
The water temperature is adjusted to 55°C.
The top curve illustrates the actual temperature of the water tank.
Temp Sens, the line indicates that the sensor measures a deviation from the set value.
Adjust, the line indicates that the electronics requires an adjustment of the temperature.
Level Alarm, the line indicates that the level in the water tank has reached the lowest
level (machine stops).
Level High , the line indicates that the water tank is full (stop of water intake).
Level Low, the line indicates that more water is required (start of water intake).
Valve Cold, the line indicates that the solenoid valve with cold water is open.
Valve Hot, the line indicates that the solenoid valve with hot water is open.
* %
* &
* #
* $
;
;
+ �
9 = J A H
J A � F
J = � �
&
$
"
6 A � F 5 A � I
) � K I J
� A L A � ) � = H �
� A L A � 0 E C D
� A L A � � � M
8 = � L A + � � @
8 = � L A 0 � J
= > ? @ A
� = N " I A ?
C
Water Tank, Control
a: There has been no consumption on the machine, and the temperature has therefore
fallen to approx. 20°C. (B5) shows that the water tank is full.
b: A consumption has started. (B6) requires more water. (B7) requires a higher temperature,
the adjustment is activated and Y1 opens.
c: The temperature set is reached. (B5) is still not activated, (Y2) gives access to the
cold water to stabilize the temperature.
d: (B6) requires more water and (B7) requires hot water. The water supply is unsufficient
to fill the tank. After 4 seconds in this condition, the temperature adjustment will be
interrupted and (Y1) as well as (Y2) are kept open irrespective of the water temperature
(on the display of the machine, the temperature light is on).
e: The water supply is insufficient. (B8) is activated and the machine stopped.
6