27
Maintenance
The 750 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).
Check the oil.
To check the oil level correctly, remove the oil filler cap
on the top of the power unit. A dip stick is attached to
the bottom of the cap for checking the oil level as
shown in Figure 24.
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 750 Operator requires removing the power unit and
drive unit from their installed positions unless you are
able to pump the oil out of both units.
Light duty use: change every 4 yr
Heavy duty use: change every 2 yr
Figure 24. When you check the oil, make
sure the oil level falls between the
minimum and maximum marks on the oil
dip stick
Check the pressure settings.
Light duty use: check once per year
Heavy duty use: check every 6 mo
Check all reversing devices.
Every six months, you should verify that all installed
reversing devices work properly.
The Control Panel
The control panel requires no maintenance.
Troubleshooting
WARNING!
Before you do any work on the control panel, be sure to turn off the main power.
Problem: The gate does not respond to an activating
signal.
Solution:
Verify that you have correctly wired the operator to the
control panel.
Verify that the LED DL3 is on. If it is not illuminated,
then check the fuses on your control panel.
If the LED DL3 is not illuminated and your fuses are
okay, then the stopping device is being triggered and is
preventing the gate from responding to your signal. If
you have no stopping device installed, then be sure you
have installed a jumper across the appropriate terminals.
Verify that your activating device works properly. Either
DL1 or DL2 (depending on your gate design) should
illuminate when you signal the gate to close (or open)
and LED DL3 should be on. If either DL1 or DL2 does
not illuminate when you signal the gate, then the
problem may be in your activating device. Short across
the appropriate terminals. If the short causes the gate to
