9.5.4
Backflow preventer BA295S
Check components on the backflow preventer
Tool:
Remove the backflow preventer
1.
Set up the backflow preventer in a test assembly as described in the documentation
2.
for the backflow preventer.
Generally check the backflow preventer for damage and leaks.
3.
Check inlet backflow preventer.
4.
Check drain valve.
5.
9.5.5
Metering pump DOSATec D25 RE 09
Interval
Maintenance work
Proportional metering unit
Half-yearly
Rinse metering unit
n
Grease the seal of the metering unit or replace it if necessary.
n
of the metering unit' on page 67
Proportional metering unit
Annually
Replace the seals of the metering unit.
n
on page 67
Dismantle and check the Internal components for wear.
n
Clean metering part
Fig. 11: Clean metering part
Protective equipment:
Close the water supply.
1.
Remove the metering part.
2.
Rinse the metering unit and the seal
3.
Grease the seal with suitable grease.
4.
Fit the seal to the metering unit.
5.
Pressure test kit
n
Ä ' Einbauanleitung' on page 134
Ä ' Einbauanleitung' on page 135
Ä ' Einbauanleitung' on page 136
Ä 'Clean metering part' on page 63
Ä 'Replace the seals of the metering unit'
1
Chemical-resistant protective gloves
n
Protective goggles
n
Safety shoes
n
63
Ä 'Replace the seals
Seal
1
thoroughly with clear water.
1
MAN048969, Ver. 5-05.2024
Maintenance
Personnel
Specialist
Specialist