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16
Installation
Hydraulic Adjustments
Step 7:
1
Locate the by-pass valve. Using the hex key supplied, re-engage the by-pass
valve by turning it clockwise as far as possible.
2
Turn power on at main power supply and at power disconnect switch. The
controller has a 7 second delay form power-up until a signal can be received.
3
With gate open, activate the unit to close. Using a flat blade screwdriver, slowly
turn the close pressure valve counter-clockwise until the gate begins to move,
then adjust it ¼ to ½ turn more. (Unit is shipped with pressure valves set at
minimum).
NOTE:
Since the unit's cycle time has yet to be adjusted, it may shut off too soon
or may run longer than desired.
4
Locate the open pressure valve. Activate the unit to open and adjust it in the
same manner as the close direction.
WARNING
The open & close pressure valves must be adjusted properly. They should
develop enough force to open and close the gate properly. If the gate
meets an obstruction there will be a minimum amount of force applied.
Check this by holding the gate when it is closing and opening.
For manual operation of the gate, use the hex key and turn the by-pass
valve counter-clockwise to disconnect the unit. To reconnect the unit
turn the by-pass valve clockwise.
5
When all the valves have been adjusted, replace the plastic cover.
Never adjust the open and/or close pressure valves to their maximum
setting. Always use the minimum setting required to move the gate. If
strong wind loads are a possibility, increase the run time – not the
pressure valves.
Doc 01-20238
Rev B
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