Festo VTSA Series Description page 64

2. Mounting
2.1 General instructions on assembly and dismantling
2−4
Warning
Uncontrolled movements of the connected actuators and
loose tubing can cause injury to persons and/or damage
to property.
Before carrying out assembly and maintenance work,
switch off the following:
Compressed air supply
The operating and load voltage supplies.
Note
Handle all modules and components of the valve terminal
with great care. Give special attention to the following:
The specified torques must be complied with.
Electrostatically sensitive devices.
Therefore, do not touch any contact surfaces.
Valve terminals with Sub−D multi−pin node:
Protect the multi−pin node against humidity, dirt and
dust etc. before connecting multi−pin plug socket with
cable.
Festo P.BE−VTSA−44−EN en 0905e