GE Druck PV 622 User Manual page 18

Issue 1
Full control
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1-6 Instrument parts, accessories and options
When the refill valve is open, you have full control to increase
or decrease the pressure/vacuum. Before you seal the system
(Section 1.3.3), turn the wheel to the necessary position:
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for equal adjustment, turn it to the middle of its range
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for maximum adjustment, turn it fully clockwise or
counterclockwise
When you have set the applicable pressure or vacuum with the
pump (Section 1.3.7), use the volume adjuster.
At higher pressures, it is easier to turn the wheel if you fold in
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the handle:
1. Pull the handle out from the recess that locks it in position.
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2. Fold the handle back against the wheel.
Refill
If you increase pressure and the volume adjuster gets to the
limit of travel, close the refill valve (Section 1.3.4). You can then
use the pump and volume adjuster to refill the pressure
mechanism:
1. 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).
2. Refill the pressure mechanism with the pump (≈ 15 cycles)
and wind the volume adjuster clockwise until the pressure
starts to increase.
3. Open the refill valve to get full control again.
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K0457 - [EN] English