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9.
Manual Operation of Door
9.1
Operating Instructions
The 500 ST door can be operated manually in the event of a power outage or if there is a motor malfunction.
To operate the door manually, perform the following instructions.
If door is OPEN (door curtain raised) perform the following steps:
1. Locate brake lever at bottom of motor. (See diagram below).
2. Carefully release brake by flipping lever down. CAUTION: Curtain will drop when brake is released.
If door is CLOSED (door curtain lowered) perform the following steps:
1. Locate brake lever at bottom of motor.
2. Carefully release brake by flipping lever
down.
3. Motor shaft is accessible from bottom
of motor. Use provided Crank Handle
to rotate motor shaft.
4. Carefully turn motor shaft
counterclockwise to raise door curtain.
NOTE: The drive (as viewed from the
'motor end' of door) is synchronized
with clockwise or counterclockwise
rotation of the motor shaft
5. When door curtain has been raised to
desired height, flip brake lever up to
engage brake.
Part No. 4801-5154 Rev 4-08
!
Disconnect All Electrical Power To Motor Before Attempting
To Operate The Door Manually!
!
The Curtain Is Released When Brake Lever Is Disengaged.
Do Not Disengage Brake Until Door Opening Is Clear!
Crank Handle
attaches here.
Warning!
Warning!
Brake lever
engaged.
BRAKE ON
500 ST Door
Brake lever
disengaged.
BRAKE OFF
Page 16 of 25
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