Controlled Products Systems Group 222EX43 - Manual (Page 31)

14 © 2012 Installation and Reference Manual D0119 Rev. J
Section 2
— Mechanical and Hydraulic Adjustments
1. Drive Wheel Spring Tension
When the drive wheels are fully clamped on the rail, the red spring should be compressed to 2-inch in height. Turn the nut
at the bottom of the threaded rod assembly to adjust
the spring’s tension. Slightly less compression is okay for lighter
gates. (See illustration on page 11.)
2. Drive Rail
Unclamp the wheels and move the gate manually to verify that the drive rail does not move more than 1-inch up and down
or ¼-inch side-to-side throughout the entire horizontal travel of the gate. Re-alignment is simple if the rail is mounted with
U bolts. Adjusting the rail for side-to-side movements requires inserting shims between the rail and the gate where
necessary. To adjust side-to-side movements, loosen the U bolts and add or remove shim stock. To adjust up or down,
loosen the U bolts and simply tap the rail with a hammer until the correct height is reached.
3. Brake Valves
SlideDriver 40 & 30F (222E & EX1.7) models only.
These operators are equipped with brake valves and proper brake valve
adjustment is important for smooth operation of the gate. In order for the
brake valves to have time to function, the limit ramp must trigger the
limit switch at least six inches before the point where you want the gate
to stop. Adjustment of the brake valves, one for each direction of travel, will
determine how quickly the gate actually stops. If adjustment is needed, loosen
the 9/16-inch lock nut on the top of the brake valve and make ¼-inch
incremental turns on the adjustment stem with an Allen wrench. The
adjustment is counter-intuitive, such that a counter-clockwise adjustment stops
the gate more rapidly. If the adjustment is set too loose, the limit ramps will
bang into the drive wheels. If the adjustment is set too tight, the system
pressure will increase, the gate speed may decrease and the gate will jerk to a
stop. Brake valves are factory-set to midpoint, two turns. This should be
sufficient for most applications. If the switch stops with less than two inches of
limit ramp remaining, increase braking. Set the brake valves to achieve a
controlled smooth stop with the limit ramp 1½ to 3-inches from the wheels.
When the adjustment is complete, retighten the locking nut to hold the setting
.
4. Pressure Relief Valve
This valve governs the maximum system hydraulic pressure. It is located on the
backside of the pump, above the AWOG on SlideDriver 40 and on the same
manifold, but facing the operator chassis, on other operator models. The
pressure relief valve is not factory set and may need to be adjusted depending
on the gate weight. Reduce the pressure relief valve setting to the lowest
pressure that will reliably operate the gate. A lower setting reduces the
operator’s maximum force. Refer to the yellow tag wire tied to the unit, and
follow the instructions.
NOTE: The only way to display the actual relief valve setting is to unplug the
hydraulic hoses from the quick disconnect fittings and run the operator. View
the setting on the pressure gauge. Retighten the locking nut to hold the desired
setting and reconnect the hoses correctly.
5. Open and Unloader Valves
These two valves are solenoid operated and, when energized, direct the
hydraulic flow to open the gate. The Unloader Valve energizes at the beginning
of a cycle to allow no load motor starts, and again at the end of each cycle to
aid in decelerating the gate. No adjustment of these valves is possible or
necessary. The black solenoid coil mounts on its valve stem.
“Right Hand” Hose connections shown
Pressure Relief Valve
Left: SlideDriver 40, 80, 200
Behind black switch
Right: All other models
Open Valve
Unloader Valve
Optional brake valves CCW = quicker stop
Left valve controls open
Right valve controls close