L
ATCH
B
LOCK
U
PGRADE
(A
PRIL
2008)
n a small number of
Genesis Vertical Platform Lifts
with mechanical locks, the locks
ave jammed in a position that allows the platform to move away from a landing even
ough the door or gate is not properly locked. Should the platform be moved away
om the upper landing when this occurs, the upper door or gate may be opened
cre
n
ng is
sm
Affected Product
This notice pertains to Genesis lifts equipp
uring the
pas
e
general safety
bul
in
each dealers received a list of affected lifts in
number of parts kits. This not
the
c
The Problem
Dur g
chanical lock, a vertical pin located inside
the
k that is mounted on the
escutcheon plate on the door. As the lift leaves the landing, the pin passes through the
hole in the latch block, thus locking the door. A supervisory switch ensures this pin has
oved into the correct locking position before the lift will operate. As well, a magnetic
roximity switch in the doorframe monitors the position of the door. The lift will not
f the lift starts to travel when the door is slightly open but the
O
h
th
fr
ati g a potential falling hazard. Although the likelihood of this problem occurri
all, the following repair is recommended. This does not pertain to OPAL.
ed with mechanical locks shipped d
t y ar - from January 2007 to February 2008 and was a part of a
let . It is added to this manual as a reference document. At the time of release,
their territory, along with the appropriate
ice does not pertain to OPAL. Subsequent to this notice,
lo k design changed.
in normal operation of the Genesis me
doorframe drops through a horizontal hole in the latch bloc
m
p
operate if the door is open.
A problem may occur i
magnetic proximity switch is indicating the door is closed. This slight opening could
ccur if the door bounces after closing or if wind affects the closing position. Slight
ariations in door spacing and magnetic strength affect the door proximity switch
ccuracy range. When these conditions occur together they may allow the lift to travel
way from the station with the latch block slightly out of position. In an extreme case,
e corner of the pin spacer bar snags corner of the locking block, simulating a locked
oor even though the pin has not passed through the hole in the bolt. In this case the
latform could travel away from the station with the door closed but not properly locked.
tug on the door could release the jammed block allowing the door to open.
ee photos on next page for further explanation.
o
v
a
a
th
d
p
A
S
ITEM #05751 Revision B
Garaventa Lift, April 2008
22
