PMV EP5, Руководство пользователя, Страница: 17 / 32

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Manual P5/EP5 23740/98.10
Feedback spring
1
2
Once the front cover and
indicator are removed,
the feedback spring can
be easily accessed.
Hold the spring 1 from
the top, pull down and
out.
When installing, hold
the assembly at the top,
guide the lower part to
position on the zero
screw, then press down
until it fits easily under
the balance arm 2. Make
sure that the assembly is
aligned properly against
the lower arm and the
notch is engaged in the
tab on the balance arm 2.
Balance arm
3
The balance arm can
only be removed after
I/P unit, diaphragm and
feedback spring have
been removed. (See
sections above and on
page 13, 14 and 16).
Loosen the screws 3 and
the balance arm can be
removed.
When installing the
balance arm make sure
that the leafspring 4 on
the underside of the
balance arm 5 is
properly engaged into
the groove 6 of the spool
in the pilot valve.
Tighten the two screws 3
holding the balance arm
to the positioner.
6
5
4