WIKA CPP30 - Handbuch (Seite 10)

WIKA Betriebsanleitung Hand-Held Thermometer 10
GB
11044608.02 07/2006 D/GB
WIKA Operating Instructions Test Pump
Test Pump
CPP30
5. Maintenance Instructions
Prior to connecting the reference instrument and the test speci-
men, the sealing gaskets in the two connectors should be checked
for correct position and wear, and should be replaced, if and when
necessary.
A service kit, consisting of spare sealing gaskets and o-rings, is
available as an accessory.
The hand test pump CPP30 must not be soiled, and in particular it
must not get into contact with fluid or aggressive media.
6. Cause of fault
If the pressure or vacuum cannot be generated correctly or if
the set pressure or vacuum does not stay stable, this is likely to
be caused by the incorrectly positioned or selected sealing
gaskets. Please also check whether any adapters used on the
test specimen side have been tightened sufficiently to eliminate
leaks.
Before assuming there is a leak in the hand test pump: First of
all, check if the relief valve is closed and if the pressure /
vacuum change-over switch is correctly positioned and has not
come to rest in a "centre position".
If the hand test pump has not been used for a longer period of
time, the first lift may be somewhat sluggish. This effect will
disappear again during further operation.
By no means apply any force to the operating elements of the
hand test pump.
Never connect an external pressure supply system to the test
pump.