WIKA CPH65I0 Betriebsanleitung Seite 38

6. Commissioning, operation
3. Open the vent key on the pump and zero the calibrator. Then close the vent after
resetting the calibrator.
4. The top of the display will indicate "CLOSE".
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5. Apply pressure to the pump slowly until the pressure switch opens.
6. Once the switch is open, "OPEN" will be displayed; bleed the pump slowly until the
pressure switch closes.
7. In the top display it will now read "SW OPENED AT" and give you the pressure at
which the switch opened is displayed.
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In the switch test mode the display update rate is increased to help
capture changing pressure inputs. Even with this enhanced sample rate
the device under test should be pressurized slowly in order to ensure
accurate readings.
WIKA operating instructions, model CPH65I0