WIKA CPB5000HP - Handbuch (Seite 16)

Pressure Balance High-Pressure GB
CPB 5000 HP
WIKA Operating Instructions Pressure Balance High-Pressure Version 2.3 16
3.2.2 Approaching the pressure value (increasing pressure) .
We recommend unscrewing the spindle pump completely when you start to record
measurement values, (turning anticlockwise) to allow enough volume for
measurements. The low-pressure and high-pressure shut-off valve must be opened
during this process.
The system must first be filled with oil and pre-compressed.
For this the valves must be in the basic position:
Low-pressure shut-off valve closed
High-pressure shut-off valve opened
Then run the initial pressure pump for several strokes. The pressure increases to a maximum of
about 50 bar (depending on the volume of the connected test specimen).
The high-pressure shut-off valve must be closed after pre-pressure generation.
After that, increase the pressure by turning the built-in spindle pump clockwise.
After generating initial pressure, the high-pressure shut-off valve must always
be closed, before pressure is increased using the spindle pump. An integrated
safety overflow valve (adjusted to approximately 100 bar) additionally protects
the low-pressure circulation from any errors on the operator’s part.
Piston cylinder system
with bell
Weight pieces