oventrop Regusol Installation And Operating Instructions For The Specialised Installer page 11

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Illustr. 6.15 Ball valve position filling
3. Close the upper ball valve of the flow measuring
device by turning the adjustment screw into
horizontal position. Open the lateral ball valve of
the same component with a 90° turn to the left
(illustr. 6.16).
1.
Illustr. 6.16 Check valve and draining ball valve
4. Open the ball valve of the safety group with a 90°
turn to the left (vertical position, illustr. 6.17).
Illustr. 6.17 Draining ball valve safety group
5. Switch on the flushing and filling station and let it
run for at least 15 minutes.
6. Bleed the solar plant manually by closing the
lateral draining ball valve of the flow measuring
and regulating device during the flushing operation
for about 20 seconds and by opening it again all of
a sudden (illustr. 6.18). Repeat this procedure at
regular intervals.
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2.
Illustr. 6.18 Bleeding via the flow measuring and
regulating device
7. Switch off the flushing and filling station.
Bleeding the pump
1. Position the ball valves of the solar station as
shown in illustr. 6.19 (angular position of the
thermometer handle in the supply: 90°, return: 0°).
Illustr. 6.19 Ball valve position pump bleeding
2. Switch on the flushing and filling station.
3. Open the upper ball valve of the flow measuring
and regulating device by turning the adjustment
screw into vertical position (illustr. 6.20).
Illustr. 6.20 Position adjustment screw
4. Close the draining ball valve of the flow measuring
and regulating device and the ball valve of the
safety group after about 1 minute.
5. Switch off the flushing and filling station.
6. Set the check valves to operating position.
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