Wika CPB5000HP Manual de usuario descargar pdf (Pagina 18)

Pressure Balance High-Pressure GB

CPB 5000 HP

WIKA Operating Instructions Pressure Balance High-Pressure Version 2.3

3.2.5 Approaching the pressure value (decreasing 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.

Caution:

The piston is lowered very quickly just before equilibrium is achieved.

Caution:

Do not remove masses completely from the piston/cylinder system under

pressure.

 Once the spindle pump is turned back completely counter-clockwise, only the initial pressure

remains in the system.

 Now the high-pressure shut-off valve can be opened.

Open the high-pressure shut-off valve only if the pressure in the system has

been relieved to initial pressure. For this purpose, always first turn the spindle

pump back completely counter-clockwise.

 The initial pressure can be further relieved by carefully opening the low-pressure shut-off valve.

 By completely opening the low-pressure shut-off valve, the initial pressure will completely escape

back into the tank.

 The system is now completely relieved

Even if you wish to relieve the system from a high pressure completely down to

zero immediately, the spindle pump must first be completely turned back

counter-clockwise. Then open the high-pressure shut-off valve, and

subsequently open the low-pressure shut-off valve. The initial pressure then

escapes completely into the tank. The system is now completely relieved.

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Wika CPB5000HP Manual de usuario Pagina 18