WIKA CPP1000-H - Handbuch (Seite 8)

Hand test pump GB
CPP 700-H / CPP 1000-H
WIKA Operating Instructions Hand test pump Version 1.3 8
 A pressure reduction is achieved by turning the fine adjustment valve (4) anticlockwise first and
then by carefully opening the relief valve (2).
NOTE: For releasing the pressure please turn the release valve (2) only max. 1
revolution counter-clockwise. Afterwards close it again by turning clockwise.
Remove the reference instrument or the test specimen only when the relief
valve (2) is open and no pressure is in the test pump any more.
5. Maintenance instructions
.
Prior to connecting the reference instrument and the test specimen, the sealing gasket 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.
It is only allowed to clean the liquid reservoir with water or mild detergents. By
the use of alcohol, ethyl alcohol (spirit), acetone or benzol crack formations can
arise in the material of the reservoir and the reservoir can be damaged.
6. Cause of fault
.
 If the pressure cannot be generated correctly or if the set pressure does not stay stable, this is
likely to be caused by the incorrectly positioned or selected sealing gaskets. Please also check
wether any adapters used on the test specimen 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 (2) is closed.
 If the 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
CPP 700-H or CPP 1000-H hand test pump.