Section 1: Introduction; System Description; Definitions; Safety Statement - Emerson M11S-S Installation, Operation And Maintenance Manual

Section 1: Introduction

June 2012
Section 1: Introduction
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System Description

M11S-S Hydraulic Control System is a compact, modular system designed for use with
Bettis spring return actuators. The system incorporates a piston type hand pump and a
make-up oil reservoir necessitated by the differential volume of the hydraulic cylinder
(the differential volume is due to the inboard piston rod displacement).
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Definitions

If not observed, user incurs a high risk of severe damage to actuator and/or fatal injury to personnel.
If not observed, user may incur damage to actuator and/or injury to personnel.
NOTE:
Advisory and information comments provided to assist maintenance personnel to carry out
maintenance procedures.
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Safety Statement

Products supplied by Bettis, in its "as shipped" condition, are intrinsically safe if the instructions
contained within this Service Instruction are strictly adhered to and executed by a well trained,
equipped, prepared and competent technician.
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.
This procedure should not supersede or replace any customer's plant safety or work
procedures. If a conflict arises between this procedure and the customer's procedures the
differences should be resolved in writing between an authorized customers representative
and an authorized Bettis representative.
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WARNING:
CAUTION:
WARNING: FOLLOW WARNING AND CAUTION SIGNS
WARNING: FOLLOW COMPANY SAFETY PROCEDURES
Installation, Operation and Maintenance Manual
121960 Rev. C
Introduction