Next Pressure Level; Releasing Pressure; Disassembly - WIKA CPB 3000 Betriebsanleitung

Pressure Balance
CPB 3000
Just before the float position, the system increases quickly.
We therefore recommend turning the spindle slowly and evenly clockwise.
To minimise the effect of friction, move the system up against the weight pieces carefully and make
a turning movement.
Never move the system up and make a turning movement, if the piston is in the
lower or upper block position.
The piston and thus the test pressure as well now remain stable for several minutes.

3.2.4 Next pressure level

To adjust to the next highest pressure, repeat the previous steps from 3.2.1 to 3.2.3

3.2.5 Releasing pressure

Turn the spindle pump anticlockwise to release pressure in the system.
If the pressure is close to the next test level, make the fine adjustment with the spindle wheel.
To release pressure more quickly or for venting, the shut-off valve for reservoir can also be
carefully opened.
Attention: In this case the piston must stay in the lower position!
Caution:
The piston is lowered very quickly just before equilibrium is achieved.

3.3 Disassembly

After all pressure points have been recorded, open the shut-off valve for the reservoir.
Now the test specimen can be removed from the quick clamp and if required also the
piston/cylinder system can be disconnected from the pressure connection. The piston/cylinder
system should then be stored in its protective container.
Do not disconnect the test specimen or the piston/cylinder system until the
pressure in the pressure balance has been completely released.
Close both pressure connections with the blind plugs again.
WIKA Operating Instructions Pressure Balance Version 1.1
GB
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