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コントロールユニット cashco 964のPDF インストレーション オペレーション＆メンテナンスをオンラインで閲覧またはダウンロードできます。cashco 964 16 ページ。 Globe-style pneumatic control valve unit body iom
ページを印刷するmode control, but all flow is pass ing through
the control valve.
13. Vary controller "manual" SIG output until
match ing the "au to mat ic" SIG output, then
V. MAINTENANCE
SYSTEM UNDER PRES SURE. Prior to per form ing any
maintenance, isolate the valve/actuator from the sys tem
and relieve all pressure. Fail ure to do so could result in
personal injury.
A. General:
1. Maintenance procedures here in af ter are
based upon re mov al of the valve/ac tu a tor
unit from the pipe line where in stalled.
2. Owner should refer to Owner's pro ce dures for
re mov al, handling and cleaning of non-re us-
able parts, i.e. gaskets, suitable sol vents, etc.
3. Valves supplied from the factory use a
gasket sealant, Federal Process Company,
PLS2, or equal. Owner may use such aids
provided the aids are com pat i ble with the
Owner's fluid.
4. All indicated Item Numbers that are with
re spect to the actuator assembly (AA) are
in pa ren the sis and un der scored; i.e (20).
All Item Num bers that are with respect to
the body assembly (BA) of a Model 964
are not un der scored; i.e. (32). Reference
with respect to the po si tion er is in double
parentheses; i.e. ((AP)).
5. Special care must be exhibited when
ro tat ing the stem (3) of the valve to
not mar that portion of the surface of
the stem (3) where it contacts with the
pack ing (6). To rotate the stem (3), use
the jam nuts (18) or grasp stem with soft-
jawed pliers. NOTE: When using the jam
nuts (18) to rotate the stem (3), use the
upper jam nut to rotate the stem CW, and
the lower jam nut to rotate the stem CCW,
when viewed from above valve stem.
4
WARNING
change the mode of the controller over to
"automatic", and the loop will ex pe ri ence a
min i mum of upset con di tions, and will be in
au to mat ic control.
SECTION V
6. Hereafter, whenever text has the fol low ing
no ta tion, "(Note PA.)", the fol low ing text is
to be ap plied;
"For ATO-FC reverse action units,
connect a temporary air source to the
actuator and pres sur ize to a level suf-
fi cient to initiate travel to ap prox i mate ly
mid-stroke.
7. Hereafter, whenever text has the fol low ing
no ta tion, "(Note RP.)", the fol low ing text is
to be applied:
"For ATO-FC reverse action units, re-
lease all tem po rary air pressure.
B. Actuator Removal:
1. Secure the body (1) in a vise with the actuator
as sem bly (AA) oriented ver ti cal ly. Place
matchmarks between the body (1) bon net
flange, the bonnet (2) flange, and the yoke
(3) to assist in final ori en ta tion when the
body is dis as sem bled and/or the ac tu a tor
removed. If actuator has handwheel - see
Actuator IOM for removal instructions.
2. (Note PA.) Using blunt end tool, ham mer
rap the tool to loosen yoke nut (29) turning
CCW (viewed from above) ap prox i mate ly 2
rev o lu tions. Secure the ac tu a tor stem (6).
Loos en the stem jam nuts (18) by rotating
CW (viewed from above) one-at-a-time to
base of stem (3) threads.
3. Fully loosen any accessory de vic es that
are con nect ed to the stem (6) or (3) such
as ac ces so ry plate ((AP)) for po si tion er.
4. Loosen packing (6) by rotating nuts (15)
CCW 2-3 rev o lu tions. (Note RP.).
IOM-964