Cashco Premier - Manual (Page 18)

IOM-148 18
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 cifi c positioner model IOM for proper
calibration pro ce dure.
3. All indicated Item Numbers that are with re-
spect to this Model 148 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 relate
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! Clamping of liner
(Premier (10)) will prevent false move ment of
liner (Premier (10)) within body (1).
7. In this Section reference will be made to three
phrases –
a. “lower value of benchset range”,
b. “higher” value of benchset range”,
c. benchset
range.
The meaning of these phrases is sum ma rized in
the following table.
SECTION VI
Do not pressurize actuator assembly (AA) be yond the
“MAX ACTUATOR PRESSURE” level/value in di cat ed
on the unit’s nameplate (21). Fail ure to heed may
cause catastrophic failure of upper cas ing (1) lead ing
to fl ying parts.
B. Actuator Stem/Push Rod Adjustment:
1. Actuator stem/push rod linkage (8, 9, 10, 43,
43, 43, 44, 54) when properly ad just ed will –
a. Provide the proper benchset range.
b. Provide 90° rotation.
c. Provide proper valve stem (Ranger (7),
Premier (3.2)) “windup”.
2. Ensure that manual handwheel operator
(MHWO) has handwheel (58.1) backed fully
out by rotating CCW (viewed from above
handwheel (58.1)).
3. Remove cover plate (20) by removing four
screws (36).
4. Remove travel indicator dial (15) and dial
lens (14) by removing the two socket head
cap screws (31) securing to cover plate (13)
using a 3/16" allen key wrench.
5. Units with ATO-FC (Reverse) Action:
a. Disconnect the lower L.H. rod end (9) from
en gage ment with the lever arms (5) by
removing shoulder bolt (40) and lock nut
(46). It will be necessary to re move stem
(Ranger (7), Premier (3.2)) “wind up” as
described in Sec tion V.B.4.
b. Swing the lever arms (5) down against
the travel stop screw (35); this “opens”
valve plug (6)/disc (3.1).
c. Loosen lower upstop jam nut (43) from
securing upstop washer (54); back nut
(43) to the root of its threads on push rod
(10).
d. The upper R.H. rod end (8), lower L.H. rod
end (9), and push rod (10) act to geth er as
a turnbuckle; the upper end is standard
right-hand threaded while the lower end is
left-hand thread ed. To en sure max i mum
and equal en gage ment of rod ends (8,9) to
the push rod (10), it is rec om mend ed that
the link age (8,9,10) be fully en gaged and
then re ad just ed as a safety pre cau tion.
WARNING
Benchset Range*
Lower Value
of Benchset
Range
Higher Value
of Benchset
Range
psig (Barg) psig (Barg) psig (Barg)
5-13 (.34-.90) 5 (0.34) 13 (0.90)
7.5-19.5 (.52-1.34) 7.5 (0.52) 19.5 (1.34)
10-26 (.69-1.79) 10 (0.69) 26 (1.79)
*Identifi ed on namelate (21) as “Bench” or “Input Range”.