8
Installation/Operation & Maintenance Manual
GM
-
6140H 2-POST LIFT
3.5 RISKS WHILE THE VEHICLE IS BEING
RAISED
The following safety devices have been installed to
protect against overweight conditions and
equipment failure:
◆
The thermal relay in the electric box will trip if
the motor is overloaded.
◆
The maximum pressure valve
(Fig. 13)
, located
on the hydraulic oil power unit, will trip if the lift
is overloaded.
Fig. 13
◆
If the lift reaches to the maximum height, the up
limit switch will stop the lifting.
(Fig.14)
Fig. 14
◆
In case of a sudden, great leakage in the
hydraulic circuit (a broken pipe), the blocking
valves, at the bottom of each Cylinder, will trip.
(Fig. 15)
Fig. 15
◆
Keep both cables in balance during raising or
lowering.
(Fig. 16)
Fig. 16
◆
If the hydraulic cylinder breaks, the safety
wedges will trip
(Fig. 17)
, located inside the
posts. The wedges are pushed by the spring
and immediately stop the carriage preventing
their descent.
Fig. 17
Содержание GM - 6140H
Страница 27: ......