Bray 98 Series - Manual (Page 38)

All information herein is proprietary and confidential and may not be copied or reproduced without the expressed written consent of
BRAY INTERNATIONAL, Inc. The technical data herein is for general information only. Product suitability should be based solely upon customer’s
detailed knowledge and experience with their application.
S98 O & M : 38
Series 98 Operation & Maintenance
POTENTIAL MISUSE PREVENTION MEASURES
Use in unintended conditions Refer to Introduction & Installation sections in this manual and supporting product
documentation.If in doubt, contact manufacturer.
Supply pressure greater than the actuator MOP
to compensate for valve problems / incorrect
selection. Use of appropriate pressure limiting devices in the supply pressure line to limit the
pressure to actuator’s MOP is highly recommended and shall be ensured by the end
user. Refer to the Maximum Operating Pressure sections in this manual. Actutaor
MOP is printed on the name plate for ready reference.
Actuator subjected to temperatures out of
permissible limits Refer to name plate and to General Specifications section for the limits of service
temerature of the supplied trim. Ensuring the environmental conditions do not
cause over the limit temperatures, is end user’s responsibility.
Used with operating media that does not conform
to specification Clean dry media of instrumentation grade only shall be supplied. Refer to
Introduction section of this manual for specs.
Lifting actuator-valve-accessories assembly using
lifting lugs on actuator that are meant only for
the actuator. Read Warnings in the Installation section of this manual and on the stickers pasted
on actuators. Use slings and tackles of sufficient capacity appropriately for lifting
assemblies. Actuator weight is printed on the name plate for ready reference.
Pressurizing cap end port on spring return
actuators to overcome valve jamming or to
compensate valve sealing problems. Refer to Operation Guidelines section of this manual.Pressurizing pneumatic
cylinder to aid spring may cause over load on valve stem and actuator parts resulting
in damages to valve/actuator. Do not substitute the vent provided on cap end port
of cylinder with a pipe fitting.
Maintenance by unauthorized personnel See Safety Information section.Do not permit anyone, other than qualified
technicians who have read and fully understood the installation and maintenance
instructions, to perform any maintenance/adjustments on the actuator.
Maintenance without de-energizing Refer to Disassembly, Service & Reassembly of Modules section of this manual.
Under no circumstances shall attempt be made to disassemble the pressure module
or any fastener/plug be loosened, without isolating supply pressure and venting the
cylinder ports to atmosphere.
Operating the actuator without end covers Never operate the actuator in partially disassembled condition or with the Spring
Module / Pressure Module end plate removed.
Altering the design to increase spring end load
for compensating valve seating problems. Strictly prohibit change of any component design or adding spacers to increase
the spring end load. The Spring Rod thread engagement will be compromised and
this can have disastrous consequences resulting in equipmet damage and/or severe
personal injury.
RESIDUAL RISKS
This document does not cover every detail about every version of the product described. It cannot take into account every potential
occurrence in installation, operation,maintenance and use.
End user shall devise and provide adequate protection against hazards such as:
External Fire
Impacts during installation/servicing
Hazardous emissions when Natural Gas is operating media
Contact with metal surfaces due to high/low ambient temperatures or conduction/ radiation
Static electricity.