P ag e 7
January, 2007
620/640 Operator And
624BLD Control Panel Installation Manual
WARNING!
You must have the manual release
key to access the function of the manual release.
Using any other tools could damage the manual
release mechanism.
The Manual Release function for the 620 or 640 Barrier
is engaged with a key in the operator cabinet on the
lower right side. (See figure 2)
Using the Manual Release key to disengage the beam
from hydraulic operation allows you to operate the
barrier by hand.
You disconnect the hydraulic operation of the beam by
turning the Manual Release key counterclockwise. Then
you can raise or lower the barrier by hand.
Manual operation of the beam is important during the
installation process and can be useful during power
interruptions or power failures.
To re-engage the hydraulic operation of the barrier,
turn the key clockwise until the mechanism is “snug”
tight.
MANUAL
(UNLOCK)
AUTOMATIC
(LOCK)
M
ANUAL
R
ELEASE
M
ECHANISM
Figure 2. Manual Release Location on both the 620/640 Barrier
