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3.4
Control
3.4.1
Operating conditions
Operating conditions
Display
[Normal operation]
[NRV opened]
[Back pressure]
[NRV closed]
[Back pressure]
[Close emergency
lock]
Grundfix Plus Control backflow trap type 3
Fig. 8: Control elements control unit
On the front of the control unit the LC display and T1, T2 and T3 buttons
are located. The button functions depend on the current operating con‐
dition.
The current operating condition is shown on the display as follows:
Operating status
Motor-powered flap
open, main supply
230 V
Backflow protection is
assured
Motor-powered flap
closed
Backflow protection is
assured
Suggestion to close
emergency lock
Risk of flooding!
Warning signals
–
Warning signal every
10 seconds
Continuous signal
Operation in accordance with
chapter
Operating condition - normal
operation
Ä Chapter 3.4.2 'Operating
condition - normal operation'
on page 26
Operating condition – back
pressure
Ä Chapter 3.4.3 'Operating
condition – back pressure'
on page 29
Operating condition – back
pressure
Ä Chapter 3.4.3 'Operating
condition – back pressure'
on page 29
Handling
25
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