Samson BR 14t - LTR 43, Mounting And Operating Instructions, Page: 39 / 56

11-1
EB | 14t_EN
June 2023 edition
Subject to technical changes
Removal
11 Removal
The work described in this chapter may only be performed by
specialist personnel quali
fi ed to perform the corresponding task.
The After Sales Service of PFEIFFER is glad to provide on-site
consultation and support.
Danger of burning due to hot or cold components and pipe!
The valve and pipe can become very hot or very cold during
operation and cause burns upon contact.
Ö
Let the components and pipes cool down or warm up.
Ö
Wear protective garments and protective gloves.
Danger of crushing due to moving parts
Ö
Before working on the valve, interrupt and lock the pneumatic
energy and the control signal and release the spring tension
in the actuator if necessary.
Ö
Do not allow the jamming of objects in the bracket to hinder
the rotation of the shaft.
Ö
If the shaft is blocked, contact PFEIFFER.
Danger of injury due to residual medium in the butter fl y valve!
When working on the butter fl y valve, residual medium can
escape and, depending on the medium properties, cause injuries
(e.g. scalding, chemical burns).
Ö
Empty the medium from the concerned plant parts and
butter
fl y valve.
Ö
Wear protective garments, protective gloves and eye
protection.
Danger of injury due to preloaded springs!
Actuators that are equipped with preloaded actuator springs are
under mechanical tension. The marking on the actuator type
plate indicates whether a spring return is available and the fail-
safe position. The marking on the type plates is described in the
instruction manuals for the actuators.
Ö
Release the compression from the preloaded springs before
working on the actuator, see the corresponding actuator doc-
umentation.
If the actuator is delivered separately from the butter fl y valve or if
it must be disassembled, the corresponding assembly instructions
must be observed.
Prior to disassembly, make sure that the following conditions are
met:
Ö
The valve is decommissioned, see chapter 10.
Ö
When using manual auxiliary actuations, observe the corre-
sponding documentation to bring the valve into the closed
position.
Ö
Check the closed position.
WARNING
NOTE
Ö
To ensure collision-free removal, suitable measures must be
taken, see Chapter 5.3.2. In the case of noise-reducing ver-
sions of the wedge-lock-washer that also protrude past the
overall length, the order-related dimension sheet must be ob-
served.
11.1 Removing the butter fl y valve with an
assembled actuator from the pipe
Ö
Fasten the valve with suitable lifting equipment and pay at-
tention to the centre of gravity of the valve, see chapter “4.3
Transporting and lifting the valve”.
Swivel and/or tipping danger
Ö
If necessary, release and remove the supports or mountings.
Ö
Loosen the fl ange connection properly.
Ö
Disassemble the screws and seals and store them appropri-
ately.
Ö
Lift the valve carefully out of the installation site using suitable
lifting equipment, see Chapter “4.3.2 Lifting the valve”.
Ö
Check the closed position.
Ö
Place the valve in a safe position on suitable ground and se-
cure it to prevent it from tipping.
Danger of injury due to a spring-loaded opening actuator
The uncontrolled swinging movement of the wedge-lock-washer
can be dangerous.
Ö
Do not stay in danger zone.
Ö
Mark or document the installation position of the actuator.
Ö
For the transport and storage of the valve, observe Chapter
“4 Shipment and on-site transport”.
11.2 Disassembling the actuator
Ö
Secure the actuator with the crane.
Ö
Mark or document the installation position of the actuator.
Ö
Only the screws (65) between the bracket and butter fl y valve
may be loosened.
Ö
Lift the actuator with the crane and put it down in a safe
place.
NOTE
DANGER