4
Bettis Q-Series
Installation Guide
February 2017 DOC.IG.BQC44.1 Rev. 1
3 Pneumatic connections
IMPORTANT
1 The actuator/valve combination can move
after connecting the air supply.
2 Ensure that the QC4x control modules are
mounted properly to the actuator to achieve
good functioning and the required ingress
protection, before connecting the air supply.
3 Check that the maximum supply pressure
P
max
= 8bar/116Psi
4 Be sure that the minimum required supply
pressure for the application is available at the
actuator.
5 Take appropriate measures to prevent
condensation or moisture to entering the
actuator or the control module. Condensation
or moisture can damage these components
and can result in failures.
6 The exhaust ports Ra and Rb on the module
(see figure 3.1) are shipped from the factory
with transport protection.
* If ingress protection IP66 or NEMA 4X is
required, appropriate connections must be
used in exhaust ports Ra & Rb.
3.1 Operating media :
* Air or inert gasses.
* Air filtered at 50 micron without condensate.
* Dew point at -20˚C.
* For subzero applications take appropriate
measures.
3.2 Single acting (spring return) or Double
acting actuator :
1 Remove the transport sticker from the air supply
(Ps).
2 Connect air supply to port (Ps).
Fig. 3.1 Pneumatic connections
Single acting
Control
Module cover
Ps
1/4” BSP or
1/4” NPT
Double acting
Ps
1/4” BSP or
1/4” NPT
Ra
Ra
Rb
