Cashco Premier Manuel d'utilisateur télécharger pdf (Page 21)

IOM-148

(9); nut (44) is “left-handed”.

u. For Premier EZO and Premier Unlined

ONLY. Ref er ence VI.C.2. for procedure

to adjust downtravel stop screw (35).

v. Release all air pressure in actuator up-

per casing (1). Repeat loading-unloading

to cycle the valve unit (AA, BA). Repeat

adjustments as necessary.

w. Completion to this point completes the

benchset range adjustment. Proceed to

the next subsection (VI.C.) to adjust 90°

travel stop, if necessary.

C. 90° Rotation Adjustment:

1. Units with ATO-FC (Reverse) Action:

a. Pressurize actuator (AA) to the higher

value of benchset range. This pressure

should cause 90° rotation as shown by

travel indicator (16).

1. Travel short of 90°. Hub of lower

L.H. rod end (9) may be touching on

downtravel stop screw’s (35) upper

end.

a. Loosen jam nut (45).

b. Rotate downtravel stop screw

(35) CCW (viewed from below

screw (35)) until 90° rotation is

reached on the travel indicator

(16).

c. Retighten jam nut (45).

2. Travel beyond 90°. Hub of lower L.H.

rod end (9) may or may not be touch-

ing on downtravel stop screw’s (35)

upper end.

a. Loosen jam nut (45) about four

revolutions.

b. Very slowly release air pressure

into actuator (AA) until travel

in di ca tor (16) is showing at 90°.

c. Rotate downtravel stop screw

(35) CW (viewed from below

screw (35)) until the screw’s (35)

upper edge touch es the hub of

lower L.H. rod end (9).

d. Retighten jam nut (45).

2. Units with ATC-FO (Direct) Action:

a. Loosen jam nut (45).

b. Rotate downtravel stop screw (35) CW

(viewed from below screw (35)).

c. Pressurize actuator (AA) slowly until the

travel in di ca tor (16) indicates that travel

is at 0°; the valve should be in the “fully

closed” position.

d. Adjust gap between downtravel stop screw

(35) and hub of lower L.H. rod end (9) as

indicated in following table.

e. Retighten jam nut (45).

m. Adjust the push rod (10) by rotating CW

(viewed from above) until the holes of

the lever arms (5) and the lower L.H.

rod end (9) are centered and the valve

is in the “closed” position.

n. Reinstall the shoulder bolt (40) through

the lever arm (5) and lower L.H. rod end

(9) holes. Finger-tighten lock nut (46)

onto shoulder bolt (40). Using a 1/4"

allen key wrench to secure the head

of shoul der bolt (40), torque wrench-

tighten nut (46) to 15-20 ft-lbs (20-27

N-m).

o. Loosen double jam nuts (43,43) on top

side of uptravel stop washer (54).

p. With valve in “closed” position, reinstall

travel indicator dial (15) and dial lens

(14), securing with two socket head

screws (31). Position dial (15) such

that travel indicator (16) shows “0°”

travel (no “bright orange” showing from

indicator (16)) be fore fully tightening

screws (31).

q. Fully release air pressure in actuator

(AA). Observe position of valve on

travel in di ca tor (16). Travel should be

short of “full open”; i.e. 90° rotation.

1. Travel short of 90°. Adjust the push

rod (10) by rotating CCW (viewed

from above) until the travel reaches

90° as shown by travel indicator

(16).

2. Travel beyond 90°. Adjust the push

rod (10) by rotating CW (viewed

from above) until the travel is

reduced to 90° as shown by the

travel indicator (16).

r. Rotate lower jam nut (43) to raise up-

travel stop wash ers (54) until the gap

clearance between the lower casing (2)

and the top side of the washer (54) is

1/8"±1/16" (3mm±1.5mm).

s. Repressurize actuator (AA) to upper

val ue of benchset range. Tighten the

lower of the two upper jam nuts (43)

until it is tight, and secure the uptravel

stop washer (54). Tighten the upper of

the two upper jam nuts (43) down to

secure the double jam nut (43) locking

effect. Retighten lower jam nut (43) on

underneath side of wash er (54).

t. Tighten lower L.H. jam nut (44) down

until locked against lower L.H. rod end

Benchset

Range

Higher Value

of Benchset

Range - “A”

Adder

Value -

“B”

Pressure

- “C”

_ psig _ psig 2 psig _ psig

_ Barg _ Barg .14 Barg _Barg

1 2 ... 16 17 18 19 20 21 22 23 24

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Cashco Premier Manuel d'utilisateur Page 21

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