GEA ONE 11TS, Instructions For Use And Maintenance Manual

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ONE 7TS – Maintenance
Adjustment of the choker valve on the circuit
(8)
enables regulation of the speed for raising of homogenizing
pressure.
The calibration is normally performed during the machine testing phase, to avoid excessively rapid pressure
raising which could cause the overpressure valve to open.
Before changing the calibration value note down the value on the graduated scale so that you can restore it
if the new value setting is not effective.
Closing the valve
(8)
slows down pressure raising, opening the valve makes it faster.
For the pneumatic system with local manual regulation there needs to be a pneumatic regulator and pneu-
matic switch on the front control panel.
These components do not need maintenance, and should be replaced in case of malfunction.
Dampening of the vibrations induced on the homogenizing valve, due to the normal pulsations caused by the
reciprocating motion of pumping pistons, is ensured by an oil/air pressure accumulator connected to the
lower chamber of the homogenizing unit’s actuator
The accumulator is pre-charged with air at 0.5 bar.
The pre-charge pressure can be checked on the gauge and the quick connector can be used to bring pres-
sure to the correct value.
Frequent checking of the dampening system will prevent the problem of vibration and resonance which, in
addition to producing a high noise level, will cause damage to the machine and affect homogenizing effi-
ciency
.
page 7.79
This manual is property of
GEA Niro Soavi S.p.A.
and no part of it may be reproduced.