Replacement Parts; Assembly - Viega Grundfix Plus-Control Manual

Grundfix Plus-Control – Modell 4987.41

Replacement parts

Model
4987.52
4987.42
4987.47
4987.6
4987.418
4987.49
4987.443
4987.444

Assembly

Functional principle of the backflow prevention device
During normal operation, the backflow valves are open. If the pressure switch registers backflowing water, the motor-driven flap is
closed, the display will show the message "Back pressure" and an alarm will sound every 10 seconds.
The use of drainage fittings is not possible during this time.
A battery-powered emergency power supply guarantees the functionality of the system even if the 230V power network fails. With
the emergency closing device, the system can be manually closed, irrespective of the motor-driven flap.
C
Example of installation - residential building in accordance with DIN EN 12056
The connection of the upper floor  to the ground pipe must take place between the backflow valve and sewer within the
building  – this is the only way to guarantee flawless function of the sewage system. So that drainage can be ensured in the long-
term, backflow valves must not be used as the central safety device of a building with drainage fittings installed above the backflow
level  – in case of backflow, the building would flood due to non-draining wastewater .
Backflow prevention devices and their control units must be installed so that they can be reached and accessed at all times.
 Street = backflow level
 Area at risk of backflow
Art.-No. Size
Battery
471088
for Grundfix Plus control from year 2000 onwards
Control and alarm equipment
consisting of
– LCD for displaying text and 3-button control
667832
– Optical-acoustical status signal
– Self-testing every 24 h
– Emergency battery operation during mains power failure
Microfuse
633974
for control from year 2000 onwards
Cable set 20 m
– Connection cable
483500
– Pressure hose
– Conduit
Lid
consisting of
667 849 DN 100/125 – pressure switch
667 856 DN 150 – Motor drive
– Motor spindle
– Motor-driven flap mechanics
Maintenance set
321 932 DN 100/125
for the Grundfix Plus and
321 949 DN150
Grundfix Plus Control backflow valves
Partition
364 885 DN 100/125
364 892 DN 150 with flap (manual)
364 908 DN 100/125 Partition
364 915 DN 150 with flap (motor-driven)
 Area safe from backflow
 Protection against backflow due to
Grundfix Plus Control
Product description
 Upper floor connection
69
www.viega.com