WIKA CPP1600-X - Manual (Page 14)

11178035 12/2010 GB/D/F/E
Hand Spindle Pump
CPP1000-M/-L
WIKA Operating Instructions Hand Spindle Pump 14
Table: Fault description and measures
Type of fault: Measures:
I. Unable to build up pressure/leak in
the system
■ Close shut-off valve of the reservoir
correctly
■ Check whether the seals have been
placed in the pressure connections and
whether they are properly positioned.
II. Unable to build up pressure, or
maximum pressure cannot be
reached
■ After the mounting of the test specimen
and the reference instrument, air may be
trapped in the system.
Please note: The system should be vented
before beginning with calibration. For this
purpose, proceed according to chapters
3.1.2 to 3.1.4.
■ Afterwards, build the pressure back up.
NOTE: For calibration cycles with larger
volumes, it is advisable to fill the test speci-
men, and if necessary, the reference instru-
ment with operating liquid beforehand or to
use the shut-off valve for test connection,
which is available as an accessory (see
chapter 9. Accessories).
III. Slow pressure drop ■ Leak in the system, see point I.
■ If small amounts of air are always
compressed in the system together with
the medium, the test pressure that has
been generated first drops off slightly.
After this it must be readjusted.
■ If the system is pressurised quickly, it
takes a certain time (<1 minute) until it can
stabilise thermally. The pressure should
then be adjusted accordingly.
■ After the clamping of the test specimen
and the reference instrument, air may be
trapped in the system, see point II.
■ Afterwards, build the pressure back up.
Further help can be found through WIKA‘s Test & Calibration Technolgy Department.
GB