General Instructions On Installation - Festo MPA-L Series Description

3. Installation
3.2

General instructions on installation

back pressure
3−6
Warning
Uncontrolled movements of the connected actuators and
loose tubing can cause injury to persons and/or damage
to property.
Before carrying out mounting, installation and mainten
ance work, switch off the following:
Compressed air supply
The operating and load voltage supplies.
Pay attention to the following:
The components of the valve terminal contain electrostatically
sensitive components. The components will be damaged
if you touch the contact surfaces of the plug connectors or
if you do not observe the handling specifications for electro−
statically sensitive devices.
Note
Handle all modules and components of the valve terminal
MPA−L with great care.
Note especially the following:
Screws must be fitted accurately (in particular to avoid
damage to threads on plastic housing parts) and
screwed in by hand
The specified torques must be observed
Clean connecting services (avoidance of leaking and
contact faults) and intact seals and sealing surfaces
Close unused connections with blanking plugs to avoid
contamination and maintain reliability.
When exhausting large volume actuators or if the exhaust
performance is too small, back pressures can build up in the
valve terminal exhaust ducts. The back pressures can lead to
pneumatic actuation of other valves, especially with un
switched 3/2−way valves that are normally closed.
Festo P.BE−MPAL−EN en 1008NH