REV 02 OCT 2020 JLT4500-IOM-F
8
DANGER
The operator is considered an integral part of the control system with the lowering valve and lock release. During any lowering, the
operator must verify no obstruction under the lift. If any fault occurs during lowering, the operator must immediately stop the
lowering command upon indication of any problems.
Since the operator is actively engaged in the operation of the lift, the risk is negligible.
4.1 CRUSHING HAZARD
This hazard is present during the lowering operation of the lift.
DANGER
In order to prevent risks to third parties and/or damages to things, before any operation takes
place, the user shall make sure that there are no things or persons in the field of motion of lift
before and while operating it.
Each lifting cylinder is equipped with a flow limiting device that controls the lowering speed in the event of a failure in the hydraulic circuit (e.g.
if a hose is cut).
DANGER
The flow limiting devices are setup and tested at the factory to operate in standard working conditions (20°C and 46 Cst oil).
The setup of the device can be heavily affected by the working conditions (including temperature, oil viscosity and humidity).
If the lift is to be used in different working conditions from the standard design criteria, then the flow limiting device setup shall be
verified and approved by authorized personnel. A wrongly setup flow limiting device could generate a serious hazard.
The lift is equipped with a mechanical safety locking device that prevents the possible accidental fall of the load due, e.g., to a mechanical
failure and/or the accidental breach of a hydraulic hose. The safety locking points are placed in such way that the maximum allowed vertical
fall is limited to 98 millimeters.
Summary of Contents for JLT4500S
Page 3: ...REV 02 OCT 2020 JLT4500 IOM F 3 ...
Page 13: ...REV 02 OCT 2020 JLT4500 IOM F 13 Fig 3 General Specifications Service Bay Layout ...
Page 46: ...REV 02 OCT 2020 JLT4500 IOM F 46 9 1 PARTS BREAKDOWN OF FINAL ASSEMBLY Fig 38 FINAL ASSEMBLY ...
Page 54: ...REV 02 OCT 2020 JLT4500 IOM F 54 9 6 PARTS BREAKDOWN OF CARRIAGE AND ARMS ...
Page 64: ...REV 02 OCT 2020 JLT4500 IOM F 64 Check Report Summary Description Date and Name ...
Page 66: ...REV 02 OCT 2020 JLT4500 IOM F 66 12 2 WIRING DIAGRAM FOR SINGLE PHASE SHEET 2 3 ...
Page 67: ...REV 02 OCT 2020 JLT4500 IOM F 67 12 3 WIRING DIAGRAM OF CONTROL BOXES SHEET 3 3 ...
Page 68: ...REV 02 OCT 2020 JLT4500 IOM F 68 12 4 WIRING DIAGRAM OF THE ELECTRICAL SYSTEM ...
Page 70: ...REV 02 OCT 2020 JLT4500 IOM F 70 13 FOUNDATION PLAN ...
