Flowserve Heavy Duty Hydraulic Overrides - Manual

Heavy Duty Hydraulic Overrides
Hydraulic manual overrides on Automax heavy-duty
actuators provide a compact, rugged method for
manually operating the actuator. The hydraulic
override consists of either a hydraulic piston or ram, a
hand pump, and a control valve. Double acting
actuators require a piston, and spring return actuators
utilize a ram. The piston or ram is an integral part of
the actuator, designed to override the full rated torque
of the actuator.
Installation
Automax standard hydraulic overrides are supplied
as a complete integral component of the heavy duty
actuator. Override units are shipped with required
accessories, tubing, and fluid installed on actuator,
ready to be used. No additional customer installation
is required. Oil level in hydraulic override should be
checked prior to installing actuator into service. See
maintenance instructions for checking oil level. See
Automax Nuclear Qaulified Heavy Duty Actuator
bulletin B00143 for instructions on installing Heavy
Duty actuator into service.
Note: Actuator orientation must be specified when
ordering, to allow for proper orientation of pump and
reservoir. Standard orientation is horizontal, as
shown below, under 'Manual Override Dimensional
Data'.
Special hydraulic override units may be supplied with
remote mounted pump and controls. Installation of
such units is as follows:
1.
Run required hydraulic supply tubing from remote
pump and controls to appropriate ports on hy-
draulic override, per schematic supplied with unit.
2. Fill pump reservoir with a fire-resistant, nuclear
approved hydraulic fluid, such as Exxon Firexx
HS68. Consult factory for seal compatibility.
3. Use hand pump to circulate fluid into hydraulic
lines. Bleed air from lines by loosening cylinder
bleed plug or fitting on the hydraulic override.
Pump reservoir may have to be filled a few of
times to completely fill the hydraulic lines.
4. See maintenance instructions to check oil level.
B00151-0 Page 1 of 4
11444 Deerfield Road
Cincinnati, Ohio 45242
(513) 489-7800
FAX (513) 489-5243
Heavy Duty Hydraulic Override
Nuclear Qualified Actuator
Installation, Operating, and Maintenance Instructions
Double Acting Hydraulic
Manual Override
Spring Return Hydraulic
Manual Override
Model A(DA) A(SR) B(DA) B(SR) C(DA) C(SR) D
RN2 18.31 28.95 5.50 4.00 30.53 32.18 36.75
RN3 22.44 33.75 7.13 5.13 31.35 36.24 39.31
RN4 29.13 45.93 9.82 6.75 32.69 39.70 44.34
SR and DA Hydraulic Manual
Override Overall and Pump
Handle Dimensions
Note: Other actuator dimensions may
be found in Heavy Duty Catalog
MANUAL OVERRIDE
DIMENSIONAL DATA