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4: RECOMMENDED MAINTENANCE
The AST3225 transfer switch assembly has been designed to require minimum attention
under all environmental conditions normally encountered. All sliding and bearing
surfaces are inherently self-lubricating due to the combination of materials used and
therefore should not be lubricated, thus preventing any accumulation of dust and grit at
these locations. The gear-motor is also lubricated for the life of the unit, and requires no
attention.
Periodically inspect all terminals (load, line and control), and all fasteners for tightness.
Test the transfer switch operation upon initial installation, in both the motor and manual
modes. Periodically check for freedom of movement of the mechanism, hidden dirt or
corrosion, and any excessive wear on the mechanical operating parts. Clean or replace
parts when necessary.
Do not attempt to remove the arm assembly by loosening the pivot screw and lock nut.
Instead, remove the four screws holding the pivot bracket in position and lift the
assembly clear. This will facilitate any adjustment of the pivot screw and lock nut that
may be required after extended service.
Manual for AST3225
Automatic
Transfer Switch
