Festo VTSA Series, Manual, Page: 101 / 166

4. Commissioning
4−9
Festo P.BE−VTSA−44−EN en 0601a
Warning
Before actuating the manual override:
Uncontrolled actuation of the valve solenoid coils can
cause the actuators to perform sudden unexpected
movements which may cause injury to human beings and
damage to property.
·
Disconnect the power supply for the valve solenoid coils
at the relevant connections on the VTSA valve terminal.
You will thereby avoid undesired actuation of the valve
solenoid coils.
Before switching on the power supply:
During commissioning, manual override functions which
are in the switched state can cause actuators to perform
sudden unexpected movements. These movements can
cause injury to human beings and damage to property.
·
Make sure that all manual override actuations are reset
to their basic positions.
You will thereby avoid undefined switching states of the
valves.
Proceed as follows:
Warning
Before checking the valve−actuator combination:
Make sure that nobody is in the danger zone.
Please note
A valve which has been switched by an electric signal,
cannot be reset by the manual override. The electric signal
is dominant in this case.
·
Reset the electric signal before actuating the manual
override.