October 2015
Service Instructions
127072E Rev. C
2
Section 1: Introduction
Introduction
CAUTION
If not observed, user may incur damage to actuator and/or injury to personnel.
NOTE:
Advisory and information comments are provided to assist maintenance personnel to carry
out maintenance procedures.
NOTE:
This product is only intended for use in large-scale xed installations excluded from the
scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances
in electrical and electronic equipment (RoHS 2).
1�3 General Safety Information
1�3�1 Products supplied by Emerson, in its "as shipped" condition, are intrinsically safe
if the instructions contained within this service instruction are strictly adhered to
and executed by well-trained, equipped, prepared and competent personnel.
WARNING: READ WARNING MESSAGES CAREFULLY
For the protection of personnel working on Bettis actuators, this procedure should be
reviewed and implemented for safe disassembly and reassembly. Close attention should be
noted to the WARNINGS, CAUTIONS and NOTES contained in this procedure.
WARNING: FOLLOW PLANT SAFETY PROCEDURES
This procedure should not supersede or replace any customer's plant safety or work
procedures. If a conict arises between this procedure and the customer's procedures the
differences should be resolved in writing between an authorized customer's representative
and an authorized Bettis representative.
1�4 Bettis Reference Materials
1�4�1 For the assembly drawing of G01 through G5 spring-return one power module
hydraulic series actuators use part number 122588.
1�4�2 For the assembly drawing of G7 through G10 spring-return one power module
hydraulic series actuators use part number VA-ED-000-8765-00.
1�4�3 M11 manual hydraulic override system operating instructions part number
126858 with M11 assembly drawing part number 126567.
1�4�4 M11-S manual hydraulic override system operating instructions part number
121960 with M11 S assembly drawing part number 121107.
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