Operation Of The Test Pump; Generation Of Pressure - WIKA CPP 7 Betriebsanleitung

Hand test pump
CPP 7

4. Operation of the test pump

4.1 Generation of pressure

 Make sure, the pressure relief and change over valve for pressure/vacuum (3) is in „VENT"
position.
Fine adjustment valve (2)
Pressure relief and change
over valve for
pressure/vacuum (3)
 Turn the fine adjustment valve (2) counter-clockwise fully out (smooth "stop" can be felt)
 Turn the pressure relief and change over valve (3) to „PRESSURE" position.
 Operate the ram (5) of the hand pump until the approximate pressure has been achieved.
 Turn the fine adjustment valve clockwise to increase the pressure or anti-clockwise to decrease the
pressure until the requested test pressure has been reached precisely (to be read on the reference
measuring instrument).
 A pressure reduction is achieved by turning the fine adjustment valve (2) anticlockwise first and
then by carefully switching the change-over valve (3) to "VENT" position.
WIKA Operating Instructions Hand test pump Version 1.0
Downloaded from www.Manualslib.com
NOTE: After increasing the pressure, the reading may slightly drop again for about 30
seconds, which is caused by thermodynamic effects, the tube connection and the
sealing gaskets. If the pressure drop does not come to a standstill, check the
measuring circuit for tightness.
Due to the low volume of each compression stroke of the hand test pump, only small
volume test specimens should be tested.
Remove the reference instrument or the test specimen only when the relief
valve (3) is open and no pressure is in the test pump any more.
manuals search engine
3 positions
VACUUM VENT PRESSURE
GB
.
.
7