Commissioning; Valve Removal From Piping And Actuator Disconnecting - KSB BOAX-N Instructions De Service

76.5. Actuated valves
Electrical cables may only be connected by qualified
personnel.
The applicable electrical regulations (e.g. IEC and national
standards), also for equipment in hazardous locations, must be
observed.All electrical equipment such as actuator, switchboard,
magnetic valve drive, limit switch etc. must be installed in floodproof
dry locations.Voltage and frequency must match the indications
stated on the identity plate.
8.

Commissioning

8.1. General
Prior to commissioning the valve, the pressure, temperature and
material data stated on the valve should be compared to the actual
operating conditions in the piping system to check whether the valve
can withstand the loads occurring in the system.
Possible pressure surges (water hammer) must not be exceed
the highest admissible pressure. Adequate precautions should be
taken.In new pipe systems and especially after repair work, the
system should be flushed with the valves fully open to remove solids,
e.g. weld beads, which may damage the seats.
8.2. Operation
The position of the disc is indicated by the pointer of the actuator or by
handle lever. The valves are closed by turning in the clockwise
direction (top view) and opened in the counterclockwise direction.
8.3. Functional Check
The following functions should be checked:Before commissioning,
the shut-off-function of the valves should be checked by repeated
opening and closing.
8.4. Actuated valves
Adjustable end stops and torque limiter of actuators have been
adjusted in factory.
9. Valve removal from piping and
actuator disconnecting
Identify the valve by identity plate.
Place the disc at 10 ° opening.
The entire valve must be unpressurized and must have cooled
down sufficiently so that the temperature of the medium is lower than
60° C, to prevent scalding.
Opening pressurized valves will cause danger to life and limbs
lf highly flammable substances or liquids whose residues may cause
corrosion by interaction with the air humidity were handled by the
valve, then the valve should be drained and flushed or vented.lf
necessary, wear safety clothing and a face guard/mask.Depending on
the installation position, any liquid remaining in the valve may have to
be removed.
Prior to possible transport, the valves must be flushed and drained
carefully.lf you have any questions please contact your KSB Sales
Office.
18
lf actuators powered by an external source of energy (electric)
need to be removed from the valves or dismantled, the energy supply
must be shut down prior to removing the valve from piping.
Remove the valve from the piping with its actuator. Do not
damage the liner during removal the valve from the pipe. Therefore,
pull apart the pipe flanges to allow sufficient clearance.
Identify the mounting position of the actuator
Disconnect the actuator and take care of all bolting parts.