Vacuum Procedure; Pressure Procedure; Open The Refill Valve (1 Turn); Procedure, Turn The Volume Adjuster Wheel To The Middle Of Its Range Of Operation - GE Druck PV 622 User Manual

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3.5.1 Vacuum procedure

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3.5.2 Pressure procedure

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3-4 Pneumatic pressure operation (PV 622)
Step Procedure (Vacuum)
1.
Set the pressure/vacuum selector to vacuum (-); fully
counterclockwise.
2. Open the refill valve (1 turn).
3. To do equal adjustments (up or down) at the end of the
procedure, turn the volume adjuster wheel to the
middle of its range of operation.
To get the maximum vacuum, turn the volume adjuster
wheel fully clockwise.
4. Seal the system.
-
5. Use the pump to set the maximum vacuum or set the
vacuum you want to adjust.
6. Adjust the vacuum: + decrease; - increase.
Step Procedure (Pressure)
1.
Set the pressure/vacuum selector to pressure (+); fully
clockwise.
2.
To do equal adjustments (up or down) at the end of the
procedure, turn the volume adjuster wheel to the
middle of its range of operation.
3. Seal the system.
Use the pump to set a pressure up to ≈ 20 bar
4.
(300 psi).
5.
Open the refill valve (1 turn). You now have full control
to increase (+) or decrease (-) the pressure with the
-
volume adjuster.
Note: At higher pressures, it is easier to turn the wheel if
you fold in the handle; see Section 1.3.5.
6. If you increase pressure and get to the limit of travel,
close the refill valve and wind the volume adjuster fully
counterclockwise.
There is no change in pressure to the device under test or
the PM 620 module (if applicable).
7.
Refill the pressure mechanism with the pump
(≈ 15 cycles) and wind the volume adjuster clockwise
until the pressure starts to increase.
Continue this sequence (clockwise/counterclockwise
operation and then pump) until you get the necessary
pressure OR for full control, go back to step 5.
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K0457 - [EN] English