WIKA CPP30 - Handbuch (Seite 9)

WIKA Betriebsanleitung Hand-Held Thermometer 9
GB
11044608.02 07/2006 D/GB
WIKA Operating Instructions Test Pump
Test Pump
CPP30
A vacuum reduction is achieved by carefully opening the relief
valve (3)
Never actuate the change-over valve when the hand test pump
is under pressure or vacuum! Actuate the change-over valve
only when the relief valve is open.
Remove the reference instrument or the test specimen only
when the relief valve (3) is open and no vacuum is in the hand
test pump any more.
For a maximum performance of
the CPP30 pump, please make
sure that the adjustable knurled
nut with counter nut (6) is
adjusted to such a position that
the spring visible above the nut
gets some small clearance.
If you operate with a reference
or test item with a small
pressure range, you can reduce
the performance of the pump
by turning the adjustable
knurled nut and counter nut (6)
clockwise (upwards). This
reduces the pressure you get
by every handle-stroke.
Afterwards turn the knurled nut
with counter nut (6) anti-
clockwise (downwards) to
achieve maximum performance
again.
Overpressure protective device