Service Instructions
137463E Rev. D
August 2015
1
Section 1: Introduction
Introduction
Section 1: Introduction
1�1 General Service Information
1.1.1 This service procedure is offered as a guide to enable general maintenance to be
performed on Bettis™ CBAX30-SR spring-return series actuators. The following is
a list of general CBAX30 SR model numbers:
Table 1� CBAX30-SR Model Numbers
MODEL (1) MODEL (1) MODEL (1)
CBA730-SR CBA730-SR-M3 CBA730-SR-M3HW
CBA830-SR CBA830-SR-M3 CBA830-SR-M3HW
CBA930-SR CBA930-SR-M3 CBA930-SR-M3HW
CBA1030-SR CBA1030-SR-M3 CBA1030-SR-M3HW
(1) Also includes actuator models with –10 and –11 as a sufx
NOTE:
When the actuator model number has “-S” as a sufx then the actuator is special and may
have some differences that may not be included in this procedure.
1.1.2 Normal recommended service interval for this actuator series is ve years.
NOTE:
Storage time is counted as part of the service interval.
1.1.3 This procedure is applicable with the understanding that all electrical power and
pneumatic pressure has been removed from the actuator.
1.1.4 Remove all piping and mounted accessories that will interfere with the module(s)
that are to be worked on.
1.1.5 This procedure should only be implemented by a technically competent technician
who should take care to observe good workmanship practices.
1.1.6 Numbers in parentheses, ( ) indicate the bubble number (reference number) used
on the Bettis assembly drawing and Actuator Parts List.
1.1.7 When removing seals from seal grooves, use a commercial seal removing tool or a
small screwdriver with sharp corners rounded off.
1.1.8 Use a non-hardening thread sealant on all pipe threads.
CAUTION: FOLLOW MANUFACTURER'S INSTRUCTIONS
Apply the thread sealant per the manufacturer’s instructions.
1.1.9 Bettis recommends that disassembly of the actuator should be done in a clean
area on a workbench.
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