WIKA CPB5000HP - Handbuch (Seite 21)

Pressure Balance High-Pressure GB
CPB 5000 HP
WIKA Operating Instructions Pressure Balance High-Pressure Version 2.3 21
V. Slow lowering of the piston in equilibrium
Leak in the system, see fault III.
After the clamping of the piston/cylinder
system and the test specimen, air may be
trapped in the system.
Afterwards, build the pressure back up.
VI. Piston is not turning or does not respond
readily
Attention: If the piston is not turning
easily or "squeaks", do not under any
circumstances force it to turn. Doing so
could cause lasting damage that would
seriously affect measurement properties.
The piston/cylinder system must be
reconditioned by authorised specialists
(see section 5.1.1)
Further help can be found through WIKA's Calibration Technology Department.