IOM-48
17
trav el in di ca tor (16) to shaft (Rang er (7),
Pre mier (3.2)) with cap screw (32) using a
7/32" allen key wrench until
fi
rmly tight.
c. Position cover plate (13) over the bearing
fl
anges (19) aligning the cover plate (13)
bolt holes with those of the bearing
fl
ang es
(19). Hold cover plate (13) on outer edge
with
fi
ngers.
NOTE:
Ensure that the three
tapped holes in the coverplate (13) are
near the 1:o'clock, 5:o'clock and 9:o'clock
positions
.
d. Position travel indicator dial (15) onto
cover plate (13) properly oriented.
e. Position clear plastic dial lens (14) over
in di ca tor dial (15), aligning bolt holes of
lens (14), dial (15) and cover plate (13).
f. Secure lens (14), dial (15), cover plate
(13) and bearing
fl
anges (19) to arm
hous ing (4) by en gag ing the three sock et
Figure 13:
ATO-FC (Reverse) Action
ATC-FO (Direct) Action
head cap screws (31) using a 3/16" al-
len key wrench and tight en
fi
rmly; do not
over-tighten and crack plas tic lens (14).
NOTE:
It may be necessary to rotate the
actuator manual handwheel operator (58)
down wards, or alternately supply a small
level of air pressure (5-7 psig (0.35-0.50
Barg) to assist in aligning bolt holes for
cap screws (31). Do not tighten one single
cap screw (31) until all cap screws (31)
are partially thread-engaged.
14B. Units (AA, BA) with Models 9540R or 991 or
PS2 positioners: Reference the IOM-9540R
or 991 or PS2 IOMs for proper instructions on
re in stal la tion of positioner ((PA)) assembly to
shaft-end.
SECTION VI
VI. CALIBRATION
A. General:
1. This section covers calibration of the actuator
as sem bly (AA) to a Ranger QCT, Premier EZO,
or Premier Unlined body assembly (BA).
2. Positioner, if installed, requires ref er ence to
the spe ci
fi
c positioner model IOM for proper
calibration pro ce dure.
3. All indicated Item Numbers that are with re-
spect to this Model 48 actuator as sem bly (AA)
are in pa ren the sis but are not un der scored;
i.e. (20). Item Numbers that relate to the body
assemblies (BA) are in parenthesis and are
underscored; i.e. (7). Item Num bers that re late
to the positioners ((PA)) are in a double set of
parenthesis and are un der scored; i.e. ((3)).
4. This Section assumes that the actuator as-
sem bly (AA) and body assembly (BA) have
been interconnected to geth er as recorded in
Section V.
5. This Section assumes that the cal i bra tion is
performed with the valve unit re moved from
its normal pipeline location, and is in a repair
shop located on a suitable work bench. Ac tu a-
tor stem/push rod sub as sem bly (8, 9,10, 43,
43, 43, 44, 54) should be oriented ver ti cal ly.
6. Premier EZO (lined) body assembly (BA)
MUST be properly clamped between two ANSI
150# RF weld neck
fl
anges. NOTE: Flanges
MUST be of weld neck type!
Clamp ing of liner
(Premier (10)) will prevent false move ment of
liner (Premier (10)) within body (1).
