www.hysecurity.com © 2019 General Maintenance MX3630-01 Rev. J 129
Brake Valve Adjustments
Proper adjustment of the brake valves is important for smooth operation
of the gate. The position and placement of the limit ramps on the drive
rail plays an important part on how the brake valves work. See SlideDriver
Standard and Slow Down Limit Ramps on page 24.
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 >\zn-inch lock nut on the top of the brake valve and make ¼-inch
incremental turns on the adjustment stem with a hex key. Test cycle the
gate after each incremental turn. Note that the adjustment screw varies
depending on model type.
See Adjusting the Brake Valves on page 22.
Pressure Relief Valve Adjustments
The Pressure Relief Valve governs the maximum system hydraulic pressure. It is located on the backside of the
pump. The pressure relief valve is factory set and may need to be adjusted depending on the gate weight. See
Adjusting the Pressure Relief Valve on page 25 or refer to the yellow tag wire tied to the unit and follow the
instructions.
Open Valve
The open valve is solenoid operated and, when energized, directs the hydraulic ow to open the gate. No
adjustment of this valve is possible or necessary. The black solenoid coil mounts on its valve stem.
Brake
Valves
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