Bettis P/N 127073E
Revision “A”
Page 2 of 37
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 G01XXX-SR, G2XXX-SR, G3XXX-SR, G4XXX-SR, G5XXX-SR, G7XXX-SR,
G8XXX-SR, and G10XXX-SR Spring Return Series Single Pneumatic Power Module
Actuators with M11 or M11-S hydraulic override module.
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 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
This procedure is written using the stop screw side of the housing (1-10) as a reference
and this side will be considered the front side of the actuator. The housing cover (1-20)
will be the top of the actuator.
1.1.8
Actuator Module weights are listed in Section 6 Table 6.2.
1.1.9
When removing seals from seal grooves, use a commercial seal removing tool or a small
screwdriver with sharp corners rounded off.
1.1.10 Use a non-hardening thread sealant on all pipe threads.
CAUTION:
Apply the thread sealant per the manufacture's instructions.
1.1.11 Bettis recommends that disassembly of the actuator components should be done in a
clean area on a workbench.
