Mega NC-30 Utilisation Et Entretien page 4

INTRODUCTION
Read these safety instructions carefully in addition to the instructions for use, operation and maintenance. Keep them in a safe place for later
consultation.
This crane has been designed for use as a hoist with extensive use in industry and garages, particularly in the handling of engines. Any other
application beyond the conditions established for use of this crane will be considered inappropriate.
Handle the crane correctly and ensure that all parts and components are in good condition and that no parts are missing. Take special care with
the elevation accessories used with the crane, such as slings, supports, compensators etc.
The crane should only be used by authorised persons, having read carefully and understood the contents of this manual.
Do not modify the crane in any way.
Non-compliance with these instructions may result in injury or damage to the user, the crane or the load to be lifted.
The manufacturer accepts no responsibility for the improper use of the crane.
1. SAFETY INSTRUCTIONS
1.1. The load to be lifted should never exceed the rated capacity of the crane in each of the positions of the hoisting arm.
1.2. Ensure the element to be lifted against any type of slipping. Do not apply any lateral pressure to the elevated or suspended load.
1.3. The crane should be supported on a solid, level and horizontal, non-slip surface. It should be well illuminated and free of unnecessary obstacles.
1.4. The capacity of the crane is reduced as the arm is extended. For this, make sure that the load capacity is never exceeded in each of the positions
of the slide, as indicated on the adhesive label.
1.5. Both children and unauthorised persons should be kept away from the work area. During the work, ensure that there is nobody in its path.
1.6. Prior to proceeding to work with the crane, make sure that the slide is perfectly fitted to the screw limit (1). The crane arm should be located in
the nearest possible position to the load to be elevated. Make sure that there are no elements in the vicinity which hinder the elevation of the
load or obstacles which prevent its lowering. When securing the load to the hook, always use appropriate elevation elements with a capacity
superior to that of the load to be elevated. Check that the safety trigger functions correctly.
1.7. To lift the load in a stable and balanced way, suspend it from the hook and bear in mind that its centre of gravity should always be within the
crane support base (2 ).
1.8. Never allow the load to sway or lower it brusquely as this may prove to be dangerous.
1.9. Do not place any part of the body under the elevated load (3), and do not climb on top of the crane.
1.10. The crane is not a transportation element but in the event that it is necessary to move the load a short distance, position the arm of the crane in
the lowest possible position. Once the movement has been completed, place the load on the ground. The crane is not a device to maintain the
load elevated for an unlimited period.
1.11. As a safety measure against overload, the crane is fitted with an overload valve, set at its maximum working pressure at the factory. This valve
should not be tampered with under any circumstances.
2. ASSEMBLY, USE AND OPERATION
As we are handling heavy elements, it is essential to carry out the following assembly processes with the help of other people.
2.1 Non-foldable cranes are assembled by positioning the column (10) on the legs (9), securing it with the screws provided. Beforehand, wedge the
wheels to avoid the movement of the crane. The arm (11) is then assembled with its slide (12) to the column and finally to the hydraulic unit (15)
on a support located on the column. The operation is completed with the securing of the central piston to the arm (11) using a rivet and two
elastic rings.
2.2 Before using the crane, it is necessary to purge air from the valve system of the hydraulic unit by turning the release valve (6) anti-clockwise and,
whilst held in this position, pumping the crane several times. Close the release valve (6) clockwise until is fully closed.The crane is now ready to
be used.
2.3 To lift the load, activate the lever (2). If lifting an engine, secure it at the points recommended by the manufacturer.
2.4 If it is necessary to use the crane in other positions, the slide should be perfectly fitted to the limiting screw.
2.5 To lower the load, turn the release valve (6) very slowly anti-clockwise. Our cranes are fitted with a safety device that only permits the load to be
lowered smoothly by automatically controlling the speed at a rate dependant upon the size of the load ( L.C.S.).
2.6 Following use of the crane, the piston of the hydraulic unit should be fully retracted. First move the slide to its initial position (4).
3. MAINTENANCE
Important: Both the maintenance and repair of this crane may only be carried out by qualified and authorized
personnel, who as a result of their training and experience are familiar with the hydraulic systems used in these
devices.
3.1 Clean and lubricate the axes of the moving parts of the crane (5) at regular intervals. The crane should be kept clean and protected from
aggressive conditions at all times.
3.2 Only original spare parts should be used.
3.3 Withdraw the crane from service if it is suspected that it has been subjected to abnormal loads or has suffered any type of knock until the
problem has been resolved.
3.4 If the oil level needs to be checked or refilled, dismantle the hydraulic unit and with the piston fully retracted, remove the filler plug and drain its
contents into a container. With the hydraulic in a horizontal position, proceed to introduce the necessary volume for each model as indicated in
these instructions. Avoid the entrance of any dirt with the new oil.
Important: An excess of oil over the volume required may affect the operation of the crane.
3.5 Only use hydraulic oil, HL or HM type, with an ISO grade of cinematic viscosity of 30cSt at 40ºC or of an Engler viscosity of 3 at 50ºC.
Extremely important: Never use brake fluid.
3.6 When the crane is not in use, it should be fully retracted in the lowest position so as to minimize piston corrosion (4). It is recommendable to
apply an anti-corrosion product to the main piston and to the pump.
3.7 Store the crane in a dry, clean place, out of the reach of children.
3.8 At the end of the useful life of the crane, drain off the oil and hand it over to an authorised agent and dispose of the remaining parts in
accordance with local regulations.
3.9 Both the repair kit, which exclusively contains the retainers and joints and the spare part sets must be ordered using the reference assigned in
the table.
1
2
NO
OK NO OK
GB
3 4
5
OIL