Installation, Operation and Maintenance Manual
RGS011110-1 Rev. 0
November 2015
4
Section 2: Installation
Installation
2�2 Accessory Mounting
As a standard, Bettis RGS Q-Series actuators are provided with NAMUR slotted accessory
mounting geometry. When installing accessories, such as switch boxes or positioners,
tighten accessory mounting bolts hand tight, stroke the actuator three times to ensure
proper alignment, then tighten the accessory mounting bolts to the proper torque.
Check the dimensional drawing or associated product data sheet for exact dimensions.
2�3 Piping and Operation
The operation of a Bettis RGS Q-Series Double-Acting (DA) actuator is comparable to any
double-acting rack and pinion actuator.
Instrument air, water, and other power gases and fluids may be used to cycle the actuator so long
as construction materials were chosen accordingly during assembly and maximum allowable
pressure is not exceeded. Air driven stainless-steel actuators with stainless-steel
or composite cylinders are not harmed by wet air (so long as freezing does not occur).
Aluminum and chrome-plated steel cylinders may be harmed over time by the presence of water.
WARNING: DO NOT EXCEED PRESSURE RATING
Exceeding the stated maximum pressure may result in damage to equipment and danger
to personnel including severe injury or death. Consult the actuator label for operating
limits. If an actuator label is missing, contact Bettis to request a replacement.
WARNING: DO NOT EXCEED TEMPERATURE RATING
Operating outside of the minimum and maximum temperature range may result in damage
to equipment and danger to personnel including severe injury or death. Consult the
actuator label for operating limits. If an actuator label is missing, contact Bettis to request a
replacement. An example of an actuator label is provided below for your reference.
NOTE:
CE marking indicates product conforms to the requirements of applicable directives as
listed on the actuator label.
