Bettis P/N 137462E
Revision
"A”
Page 2 of 18
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 CBA300 double acting series actuators. The following is a list of
general CBA300 models numbers
MODEL (1)
MODEL (1)
MODEL (1)
CBA730
CBA730-M3
CBA730-M3HW
CBA830
CBA830-M3
CBA830-M3HW
CBA930
CBA930-M3
CBA930-M3HW
CBA1030
CBA1030-M3
CBA1030-M3HW
(1) Also includes actuator models with –10 and –11 as a suffix
NOTE: When the actuator model number has "-S" as a suffix 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 five 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 disassembly of
the actuator.
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
This procedure is written using the serial number tag side of the housing (1-10) as a
reference and this side will be considered the front side of the actuator. The position
indicator (1-50) area of housing (1-10) will be the top of the actuator.
1.1.8
When removing seals from seal grooves, use a commercial seal removing tool or a
small screwdriver with sharp corners rounded off.
1.1.9
Use a non-hardening thread sealant on all pipe threads.
CAUTION:
Apply the thread sealant per the manufacture's instructions.
1.1.10 Bettis recommends that disassembly of the actuator should be done in a clean area on a
workbench.