Keeping the World Flowing
21
12.0 Operation
12.8 Pneumatic Power Supply
Verify allowed supply pressure range on actuator label.
Verify medium composition. Contact Rotork to check
the compatibility with the supply medium.
12.9 Pneumatic Connections
Preliminary Operations
A. Verify sizes of pipes and fittings according to applicable
plant specifications
B. Clean the inside of the connection pipes by washing them
with a suitable detergent and by blowing air into them
C. The connecting pipes must be properly shaped and fixed
to prevent stress or loosening of threaded connections
NOTE:
For tapered-thread fluid connections, apply a
thin layer of thread sealing product (Loctite 577 or
equivalent) to ensure a good seal.
Connect the pneumatic power source in accordance
to the applicable operating diagram, please refer to
specific job for details.
Depending upon the control circuit design,
pneumatically powered actuators may exhaust the
power supply gas into the atmosphere during normal
operation. This may present an unacceptable hazard.
Do not feed a single-acting actuator from the
spring container side after having removed the exhaust
silencer, especially if the line valve is blocked.
Exhaust port
Inlet port
Fig 12.12 Inlet / Exhaust port for spring down actuator
Exhaust port
Inlet port
Fig 12.13 Inlet / Exhaust port for spring up actuator
A4
US
US
A4
US
A4
A4
US
Summary of Contents for LP/S Series
Page 89: ...Keeping the World Flowing 89...
