Installation, Operation and Maintenance Manual
VA-DC-000-1803 Rev. 2
July 2020
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™ G01XXX-M18, G2XXX-M18, G3XXX-M18, G4XXX-M18,
G5XXX-M18, G7XXX-M18, G8XXX-M18, and G10XXX M18 Double-Acting
G-Series Actuators with one Pneumatic Power Module and one M18 Hydraulic
Override Module.
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 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
Follow manufacturer's instructions. Apply the thread sealant per the
manufacturer's instructions.
1.1.11 Bettis recommends that disassembly of the actuator components should be
done in a clean area on a workbench.
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