Manual Control Option; Mounting Manual Control; Manual Control Operation - Emerson Bettis Q series Installation, Operation & Maintenance Manual

October 2017
6

Manual Control option

Manual Control option
Lock
45°
Unlock
On
Off
Fig. 6. 1 Local Manual Control option
17
Installation, Operation and Maintenance Manual
O-ring seal
Manual control
Nut cover
For commissioning, emergency or maintenance
purposes, the Bettis Q-Series can be supplied with
Location for 2nd
one or two Manual Control options. These can
Manual Control
operate the pilot valve(s) inside the module and as
such operate the actuator, when there is air pressure
available, but no control signal or power supply.
6�1
1 To add a Manual Control, remove the plug(s)
in front of the module and turn in the Manual
Default location of
Manual Control
Control.
- For normal operation the module should be
fitted with one Manual Control.
- For Double Acting with a Fail-in-Last-Position
function, two Manual Control can be fitted.
6�2
1 The Manual Control has a "Push & Lock" function:
- To operate the Manual Control, use a screw
driver, push to activate and release to
de-activate the pilot valves.
- If required turn it 45°, to lock it in position and
keep the actuator in its operated state.
2 In case of a Fail in Last Position configuration with
two manual controls:
- The manual control on the right side (default
location) will pressurize the central air chamber
and cause the actuator to rotate counter
clock wise. For reverse acting Bettis Q-Series
actuators (Assembly code CC) the actuator will
rotate clock wise.
- The manual control on the left side (Location for
2nd Manual Control) will pressurize the end cap
air chambers and cause the actuator to rotate
clock wise. For reverse acting Bettis Q-Series
actuators (Assembly code CC) the actuator will
rotate counter clock wise.
- In order to operate one of the manual control,
be sure the opposite manual control is
de-activated and unlocked.
3 It is possible to rotate the screw multiple cycles.
The unit will than toggle every 90° between
"locked" (1) and "unlocked" (0).
WARNING
Bettis Q-Series actuators must be isolated
both pneumatically and electrically before
(dis)assembly.

Mounting Manual Control

Manual Control operation

DOC.IOM.BQ.E Rev. 2