KSB ECOLINE FYC, Operating Manual

Page: 86 / 100

6 Commissioning/Start-up/Shutdown
86 of 100
4.
Check the bonnet/cover bolting (902.1/920.1) and the joint ring (411.1) for
tightness after the valve has been subjected to load conditions or heated up for
the first time.
5.
To avoid stress or distortion, open the valve by several counter-clockwise
handwheel turns.
6.
If the bonnet/cover bolting (902.1/920.1) has loosened, evenly re-tighten it
crosswise.
NOTE
Re-tightening the bonnet/cover bolting is particularly important for valves operated
at temperatures exceeding 200 °C.
Valves with actuator
On valves with electric, pneumatic or hydraulic actuators, the actuator strokes/forces
must be limited.
DANGER
Unqualified personnel performing work on valves with actuator
Danger of death from electric shock!
▷
Ensure that the connection to the power supply and the process control system
is performed by a trained electrician.
▷ Observe regulations IEC 60364 and, for explosion-proof models, EN 60079.
WARNING
Incorrect connection to the mains
Damage to the mains network, short circuit!
▷ Observe the technical specifications of the local energy supply companies.
NOTE
If the valves are fitted with actuators, ensure that the actuator's operating manual
is also observed.
1.
Check the available mains voltage against the data on the name plate of the
actuator.
2.
Select an appropriate start-up method.
Electric actuators are ready for operation and wired as follows:
▪ Valve "CLOSED": torque-dependent
▪ Valve "OPEN": travel-dependent
The wiring diagrams are located in the terminal boxes.
For pneumatic or hydraulic actuators, the control pressures specified in the order
confirmation must be observed. Non-observance may damage the actuator.
If required, consult the manufacturer for closing and opening torques or actuating
forces.
6.1.2 Valve actuation
NOTE
Viewed from above, the valve is closed by turning the handwheel in clockwise
direction, and opened by turning the handwheel in counter-clockwise direction.
Direction symbols are found on the top of the handwheel.