Autoquip FREIGHTLIFT FLH - Manual (Page 80)

80
BLEEDING AIR FROM THE SYSTEM
NOTICE
Avoid air in the system! The presence of air in the system can lead to a
lock-up of the velocity fuses. (Air reacts like a spring when it is
compressed.)
1. Fully extend the cylinder rods to expend air from the cylinder barrel after the
FREIGHTLIFT has been lowered.
2. Carefully loosen the bleeder bolt (located in the 90° elbow) to allow all air to escape.
3. Press the “UP” button and let the motor run briefly, then press the Emergency Stop
Button.
4. Let the oil escape until clear oil (no bubbles) appears from the bleeder bolt.
5. Tighten the bolt.
6. Repeat Steps 1 – 5 on each cylinder.
7. Clean up any spilled oil.
8. Do not reuse the oil that was bled from the system! Any oil should be immediately
discarded because it may have flushed contaminates which were present in the line.
NOTE
: A small amount of air may remain in the cylinder, but it will be flushed back into
the reservoir after a few operations of the system.
WARNING !
To avoid serious injury or death, GUARDS, INTERLOCKS, and SAFETY
DEVICES must be restored to correct operation when installing parts or
making repairs.
GENERAL MAINTENANCE