1�1 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).
June 2012 Section 2: General Information CAUTION: FOLLOW PROPER MOUNTING PROCEDURES The M11S-S package must be mounted with the pump and reservoir upright and vertical. The reservoir fill plug must be removed and replaced, with the breather supplied, before operation.
Fully open the M11S-S by-pass control valve (30). NOTE: The valve is located on the right hand side of the M11S-S control module. CAUTION: DO NOT EXCEED OPERATING PRESSURE Do not exceed the maximum operating pressure rating of the actuator.
Continued operation of the pump simply circulates fluid through a high pressure relief. Fully open the M11S-S by-pass control valve (30) to reverse the actuator rotation or to return to normal power operation. Actuator M11S-S Manual Operation...
5.2.1 Shut off and exhaust the operating media from the actuators power cylinder. 5.2.2 Allow the actuator to fully stroke to its fail position by opening the M11S-S by-pass control (30) valve. 5.2.3 Remove the breather (150) from the reservoir end cap (25).
5.3.10 and proceed as follows: 5.3.12 Close the M11S-S block (10) by-pass control valve (30). 5.3.13 Operate the M11S-S hand pump as described in section 4.0 to cycle actuator. 5.3.14 Replace the hydraulic cylinder inboard top o-ring plug when fluid appears. Stop operation of pump.
Bettis does not recommend periodic field maintenance for the M11S-S module and pump. The only time the M11S-S module or pump should be disassembled is when either the pump or the M11S-S module fails to perform its override function. If maintenance is required and when possible the M11S-S package should be returned to the factory for maintenance.
Installation, Operation and Maintenance Manual Section 7: Document Revision 121960 Rev. C June 2012 Section 7: Document Revision Table 1� Revision Overview DATE BY * DATE Released September, 1997 A COMPILED COLBY 22 JUNE 06 19110 July, 2006 CHECKED JOHN R 6/22/06 APPROVED DAVID MCGEE...
Installation, Operation and Maintenance Manual Appendix June 2012 121960 Rev. C Appendix: A List of Drawings A�1 Part No� 121107, Remote Mount Assembly Dwg M11S-S G4/G8 For Fire Safe, Sheet 1 of 2 Apppendix...