APV SPX DELTA DKR2, Руководство по эксплуатации

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13
Double-Seat Ball Valve with Cleaning Connection
DELTA DKR 2
Operating Manual : Rev. 7
UK
11.5.2 Adjustment of operating position without FG flanges
If FG flanges are not available, the ball can, in exceptional cases,
be adjusted as follows
(Attention! Failure of adjustement is possible.):
Install the ball seals as described in 11.3.
Assemble the valve as described in 11.4.
Turn the ball into its exact open position.
a. Control actuator (15) with pneumatic air (min. 6 bar) and place
it on the yoke.
b. Screw in screws (16), but do not tigthen them.
Danger! Do not reach into the open valve after installation
of the actuator.
Risk of injury by sudden operation of the valve.
! The ball must be in its exact open position !
c. Slightly turn the actuator in anticlockwise direction to adjust
the play in the connecting parts.
!!! The ball must not move during this procedure !!!
(exact open position)
At first, tighten the screws (18) and then tighten the screws (16).
Operate the turning actuator several times to check the operating
accuracy of the ball.
d. Shut off the air supply to the turning actuator and insert the valve in
closed position into the line system. Fasten it with the screws (20).
e. Centering of ball (absolutely necessary)
To center the ball between the seal rings, proceed as follows:
1. Release screws (3) by about ¼ turn.
2. Release one screw (18) by about ¼ turn.
3. Release second screw (18) by about ¼ turn and retighten
it immediately.
Attention! Hold the turning actuator fast during this process.
Bring up holding moment in clockwise direction
(top view of actuator).
4. Tighten screw (18) and, then, screw (3).
f. Tightening torque: Md = 16 Nm M8
Md = 40 Nm M10
g. Connect pneumatic air line with turning actuator.
h. Connect cleaning line.
i. Attach valve position indicator.
11. Service Instructions