Bray 5 Series - Manual (Page 2)

Series 05 Operation and Maintenance Manual
Manual Number OM-05-001
Date: August 9, 2010 Page 2 of 3
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.
II. Installation Procedures
A. Before you begin, several checks must be carried
out and decisions made regarding the orientation
of the actuator and S05 Gear Operator.
1. The S05 can be oriented with the handwheel
input shaft either perpendicular or parallel to
the pipeline for standard clockwise-to-close
operation without any special modification.
The orientation of the S92/93 actuator, either
perpendicular or parallel to the pipeline,
does not depend on the orientation of the
S05 manual override gear. Refer to Fig. 1 for
typical installation orientations.
2. Check to make sure that the valve, the S05
Gear Operator and the S92/93 actuator are all
at the same operating position, open or closed.
Failure to do so will prevent the assembly
from operating properly and may damage
some equipment. When checking the S05,
view it from above. The output drive should
rotate clockwise while the valve is closing.
3. If the actuator to be mounted is an S93 spring-
return actuator, it is recommended, but not
necessary, to remove the spring cartridges
before beginning. Remember the configuration
of the spring cartridges and replace them
before air is supplied to the actuator. Replace
the springs in the S93 when the pistons are in
the fully closed position. That is, the actuator
pinion is in the full clockwise position.
B. Installation may now begin. The following are
the minimum essential steps required for a typical
installation.
1. Carefully examine the parts in the kit to make
sure where each is used. Refer to exploded view
drawing Fig. 1 for a typical assembly. The 24:1
unit requires an adapter spool between the S05
and the actuator mounting flange on the valve.
Some larger gearboxes have drilled and tapped
holes in the base to fit directly to the valve. Still
others require an adapter/spacer plate between
the valve and the S05.
2. Remove the four housing bolts or studs from
the S05.
3. There are two stem adapters, one fits over the
valve stem and halfway into the S05 drive
sleeve; the other connects the remaining S05
drive sleeve space with the S92/93. Square up
the S05 with the valve.
4. Place the S92/93 stem adapter into the S05
drive. If a stem collar was supplied, slip it over
the double-D and place the actuator over it.
Thread the nuts and lock washers on the studs
and tighten.
III. Operation
A. It is recommended to cycle the valve fully with
the S05 before supplying air to the S92/93 to
ensure that all the connections are made correctly.
A temporary hissing sound from the ports is not
an indication of a leak in the S92/93; it is simply
displaced air exiting the actuator. If the pneumatic
actuator is an S93, it will become increasingly
difficult to rotate the vale open (fail closed) or
close (fail open) with the S05 because the pistons
are compressing the spring cartridges; for the same
reasons, it will be difficult to disengage the clutch.
This is not an indication that there is a malfunction
in the assembly.
B. It is important not to disengage the S05 if the
S93 is applying torque via compressed springs,
otherwise damage may occur to the unit or to the
driving couplings between the S93 and the valve.
CAUTION
C. Before supplying air to the S92/93, disengage
the clutch. The drive gear in the S05 always
rotates with the valve regardless of whether the
clutch is engaged. If the clutch is engaged, the
drive gear will push against the worm gear and
damage may occur to the internal components.
D. It is important to adjust the travel stops on the
S92/93 to the fully opened position. In the event
that operating air pressure is cut and the valve
needs to be opened, use the S05 to open it fully
against the S92/93 travel stops. Failure to do so
can run the drive gear against the worm gear when
air pressure is resupplied. Damage may occur to
the unit or to the internal parts.
!