Hawle HAWIDO 1505, Руководство пользователя

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C. Fault finding
Symptoms Possible cause Action
Valve does not open One-way flow restrictor blocked Replace or unscrew several
times the set screw until valve
functions properly
One-way flow restrictor closed
too far Undo the set screw until valve
functions properly
Valve allows pressure creep One-way flow restrictor blocked Replace or screw set screw in
and out fully several times and
then reset
Filter in control circuit blocked Clean the filter
Air in the control circuit or valve
chamber Vent
Membrane defect Carry out service, replace
membrane
Foreign matter in the main valve Carry out service and remove
foreign matter
Valve spindle jammed by
encrustation Carry out service and remove
encrustation
Loud noise Unsatisfactory installation
conditions Change outlet pressure by 0.1
to 0.2 bar. Slightly open or close
One-way flow restrictor. Contact
Hawle customer service
department.
Wrong valve size Calculate correct valve size. (If
necessary contact Hawle)
Erratic operation One-way flow restrictor
incorrectly set Reset (according to Chapter:
Setting the reaction speed )
Original pressure value is not
reached Pressure gauge faulty Check or replace pressure
gauge
Changed operating conditions Reset accordingly (see Chapter:
Recommended installation)
Epoxy-coating damaged Transportation damage,
installation damage Repair with Hawle two-
component repair set for
coatings