3900PLD Manual
Page 24
...without power. 13. When power is restored, pull manual release a second time. • If a Standby Power Unit is connected, the operator should be opened and closed manually. Door loses limits. • Collar not tightened securely. If it is excessive the collar will wear prematurely. • Check to make ...sure the torsion bar is not moving left/right excessively. • Check to make sure the torsion bar is not visibly moving up to the jackshaft. The operator won't operate due to power failure: • Use the emergency release handle to operate up and down as it rotates. •...
...without power. 13. When power is restored, pull manual release a second time. • If a Standby Power Unit is connected, the operator should be opened and closed manually. Door loses limits. • Collar not tightened securely. If it is excessive the collar will wear prematurely. • Check to make ...sure the torsion bar is not moving left/right excessively. • Check to make sure the torsion bar is not visibly moving up to the jackshaft. The operator won't operate due to power failure: • Use the emergency release handle to operate up and down as it rotates. •...