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15
open the gate leaf that distance from the closed position
(see Figure 15).
Length of the
gate leaf
3/4 the length of
the gate leaf
Fully opened
limit stop
Fully closed
limit stop
Figure 15. On a gate leaf that opens less than
90 deg, properly position the gate leaf before
installing the 760 Operator
Mount the Operator
Once the gate leaf is in the proper partially opened
position, install two lock washers and the two
extraordinary, long-headed bolts through the two holes
in the bottom of the 760 Operator (see Figure 16). Mate
the rack in the operator to the pinion in the mounting
box. Next, insert the two bolts through the top of the
operator and into the mounting box (see Figure 16).
Tighten all four bolts securely.
Install the long,
extraordinary
bolts through
the bottom of
the operator
Install the ordinary
bolts through the
top of the operator
Figure 16. Anchor the operator to the mounting
box and pinion assembly
Adjust the Pressures
for the Operator(s)
WARNING!
You
must
decrease
the pressures of the
gate’s opening and closing momentum
completely
before you operate the gate electrically. The pressure
valves are not preset at the factory and may operate the
gate leaf with enough force to endanger people and
seriously damage the gate leaf itself.
The green and red screws on the top of the oil reservoir
of the 760 Operator are the bypass valve adjustments
that control the force of the gate leaf’s opening and
closing momentum (see Figure 17). For either valve,
turning the screw clockwise increases the pressure and
turning it counterclockwise decreases the pressure.
Which screw controls the opening thrust of the gate and
which the closing thrust depends on the orientation of
the unit in your installation site. The green screw always
controls the clockwise rotation of the splined shaft, and
the red screw always controls the counterclockwise
rotation of the splined shaft.
Before you operate the gate for the first time, you must
completely decrease the pressures for both opening and
closing. Turn both screws counter-clockwise all the
way. Later you will adjust these pressures.
Bypass valve
adjustment screws
Figure 17. Decrease the pressures controlled
by the bypass valve screws completely before
you operate the gate electrically
Summary of Contents for 760
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