SkoFlo Industries SF15000NMFB, Инструкция по эксплуатации и обслуживанию, Страница: 9 / 14

TROUBLE SHOOTING IMPROPER VALVE PERFORMANCE:
SYMPTOM CAUSE REMEDY
1. No Flow Upstream filter is Clean or replace
plugged. filter element.
Supply valve is shut Open valve slowly.
off.
Discharge line is Open valve.
shut off.
2. Fluctuations in Internal passage in Dismantle the valve
flow rates valve body between and clean up the
inlet and piston passage.
chamber is plugged.
Piston Springs are Install springs in
not installed accordance with
properly. drawing SF-0738
and Figure V.
Seat or pin worn Replace seat holder
or damaged. or piston assembly.
Supply pressure The flow controller
is not adequate. requires a minimum
of 200 psi (14 bar)
differential pressure
across the valve for
proper operation.
(Valves designed for
special high flows may
require a higher
differential pressure).
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