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26
Maintenance
The 760 Operator
The FAAC recommended maintenance schedule varies
according to the frequency of use of the operators,
whether lightly used operators (once or twice an hour)
or heavily used operators (many cycles per hour).
Operators used in a humid/ salt air climate should
follow the heavy duty use schedule.
Check the oil.
To check the oil level correctly, remove the oil filler cap
on the 760 Operator. The oil level should be at or just
below the opening of the filler hole.
Light duty use: check once per year
Heavy duty use: check every 6 mo
Change the oil.
Changing the oil completely in the hydraulic system of
the 760 Operator requires removing the 760 Operator
from its installed position. (Do not remove the gate or
the mounting box with the pinion and splined shaft.)
Drain the oil out the oil filler hole before filling the
operator to just below the hole. Remount the operator.
Light duty use: change every 4 yr
Heavy duty use: change every 2 yr
Check the pressure settings.
Light duty use: check once per year
Heavy duty use: check every 6 mo
Rack and Pinion
When you remove the 760 Operator from the mounting
box to change the hydraulic oil, grease the rack and the
pinion.
Light duty use: every 4 yr
Heavy duty use: every 2 yr
Bleed the Hydraulic System
The 760 Operator has had all air bled from its hydraulic
system when it is shipped to you. The only time it
should be necessary to bleed the 760 Operator is after
you repair the hydraulic system.
To bleed the hydraulic system of air that might cause
bouncy or jerky operation do the following:
1.
Remove the access cover to the mounting
box.
2.
Give an open signal to the gate.
3.
While the gate is opening unscrew the
opening bleed screw (see Figure 23).
4.
Wait until only clean, bubble-free oil flows
out the bleed screw.
5.
Tighten the opening bleed screw.
6.
Give a closing signal to the gate.
7.
While the gate is closing, unscrew the closing
bleed screw.
8.
Wait until only clean, bubble-free oil flows
out the bleed screw.
9.
Tighten the closing bleed screw.
Repeat steps 1–8 again after five minutes if necessary.
Then be sure to slowly fill the oil level to just below the
filler hole.
The Control Panel
The control panel requires no maintenance.
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