Locking Pi
w block with a
eing properly locked. This is how the safety
ystem is designed to operate. While this situation
e
a serious safety hazard. There are ways to
minimize the likelihood of this occurring. This is not
the subject of this safety notice and will be dealt
with in a separate technical bulletin in the near future.
n
is through
Latch Block
Pin
Space
Ba
The Solution
This problem can be corrected by replacing the
current latch block with a ne
chamfered (rounded) edge. See photo. The new
design eliminates the possibility of jamming. This
changeover process takes only a few minutes for
each door or gate. The new design is being used
on new production units.
Note:
This correction will not prevent the lift from
stopping after two inches of travel if the platform
moves away from the station without the door
b
s
may be inconvenient for the user it does not creat
Latch
Block
Latch block is mounted
to escutcheon plate on
door. Block moves
inside doorframe when
In this photo, the locking
pin has correctly passed
through hole in the latch
block, locking the door.
The supervisory switch
will allow the lift to
operate.
In this photo, the door is
slightly open. The latch
block has jammed on the
edge of the pin spacer bar
(red circle). The pin is not
t
through the latch block bu
is in the correct height
r
r
New latch block with
chamfered (rounded)
edge. This prevents
jamming. The side of
the block with the
chamfered edge and
chamfered hole must
face the end of the
locking pin when
Latch
Block
Latch
Block
ITEM #05751 Revision B
Garaventa Lift, April 2008
23