Safety Instructions; Use And Operation - Mega MGH-20 Instrucciones De Uso Y Mantenimiento

Read these safety instructions carefully in addition to the instructions
for use, operation and maintenance.
This jack has been designed for use in the elevation of cars and lo-
rries, although it may also be used in other applications, provided
that the manufacturer's instructions reflected in this manual are com-
plied with.
Any other application, beyond the conditions established for use of
this jack will be considered inappropriate.
Handle the jack correctly and ensure that all parts are in good con-
dition prior to its use.
Only authorised persons should operate the jack having read carefu-
lly and understood the contents of this manual.
Do not modify the jack in any way.
Non-compliance with these rules may result in injury or damage to
the user, the jack or the load to be lifted.
The manufacturer accepts no responsibility for the improper use of
the jack. manual

1. SAFETY INSTRUCTIONS

1.1. The load to be lifted should never exceed the rated capacity
of the jack.
1.2. The maximum stroke of the jack indicated on the label should
never be exceeded.
1.3. The jack should be supported on a solid, level and horizontal sur-
face which is well illuminated and free of obstructions. Never stand
the jack on a surface which may sink.
1.4. The air supply hose should not be worn and connections should
be in good condition. Keep the hose clean and away from heat, dirty
areas or sharp edges and do not bend it.
1.5. Ensure that there are no persons inside the vehicle to be lifted.
Switch off the engine and apply the brake. Ensure the vehicle or ele-
ment to be lifted against any type of sliding. Use chocks if appro-
priate. (1). Do not enter the vehicle or start the engine whilst it is
supported on the jack or appropriate stands.
1.6. Position the jack under the manufacturer's recommended lif-
ting point for the vehicle and ensure that it is not corroded, dirty
or greasy. This point should remain centred over the jack saddle. All
off-centred loads can slip and accidents may result.
1.7. During raising and lowering of the load, all precautions should be
taken to avoid movement of the vehicle load. Traffic may cause the
raised vehicle to rock during roadside use of the jack.
1.8. The jack should be positioned so as to avoid the need for the
user to introduce any part of his/her body underneath the vehicle.
Never work under a raised vehicle without previously supporting it
with mechanical stands (3) or other appropriate methods.
1.9. It is necessary for the operator to be able to observe the lifting
device and the load during all movements. In the presence of dan-
gerous conditions, such as movement of the vehicle, etc, the lifting
process must be interrupted.
1.10. Ensure that there are no persons or obstructions underneath
the vehicle prior to lowering.
1.11. 1.11 As an additional safety measure against overload,
the jack is fitted with an overload valve set at the factory and which
should not be adjusted under any circumstances.

2. USE AND OPERATION

2.1. It is essential to install an air filter-lubricator control unit (D),
which is drained daily. Drain the boiler tank of the compressor daily.
Poor air quality damages essential parts of the jack.
2.2. Prior to connecting the air supply hose (8-9) to the network,
check that triggers A and B are not pressed. The section of the hose
or air network should not be inferior to that of the air intake con-
nector. If unusually long hoses are used, the air pressure needs to
be increased.
2.3. Ensure that the same air pressure is maintained during operation.
Optimum performance of this jack is obtained with a pressure of 7-10
kg/cm² and a minimum air flow of 280 l/min.
2.4. Prior to using the jack, eliminate any air that may have accumula-
ted in the system. Using the numbers of the amplified pictures as a re-
ference, proceed as follows in models fitted with an operating lever:
- Position the lever (2) in the release valve (3) and turn once in an
anti-clockwise direction.
Introduce the lever into the lever support (5) and pump the jack seve-
ral times to ensure internal lubrication and the elimination of accumu-
lated air. Alternatively, press trigger A of the valve briefly.
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- Position the lever in the release valve again and fully close it in a
clockwise direction.
- To eliminate air in models which are not fitted with an operating
lever, press triggers A and B of the valve simultaneously.
The jack is now ready for operation.
Important. Prior to lifting the load, ensure that all of
the aforementioned safety instructions are followed.
2.5. The feed screw of the jack, if fitted, comple-
ments its stroke. It is advisable not to fully extend it.
2.6. For lifting in jacks equipped with a lever, clo-
se the release valve (3) fully and press trigger A of
the air hose. The lifting operation may also be per-
formed by fully moving the lever (2) downwards to
obtain greater speed by using the full stroke range
of the piston. For jacks without a lever, lifting is per-
formed by pressing trigger A (red tube).
2.7. For lowering, slowly turn the release valve (3) in
an anti-clockwise direction using the lever (2), ensu-
ring that there are no persons or obstacles under the
vehicle to be lowered. The lowering speed is contro-
lled by the greater or lesser opening of the release
valve. For jacks without a lever, press trigger B (blue
tube) until lowering is completed. During lowering,
air is eliminated through a small hole in the connec-
tor C. This air elimination is normal. .
2.8. Should the jack be overloaded, it is fitted with
an overload valve which will prevent the vehicle from
being lifted..
2.9. Our jack may be used in a horizontal position
provided that the pump is located on the lower side.
2.10. Never move the jack with the lever in the release valve as this
will cause damage.
2.11. Do not attempt to move the jack by pulling on the plastic air
supply tube.
3. MAINTENANCE
Important: Both the maintenance and repair of the jack may only be
performed by qualified persons, who have sufficient knowledge of
the hydraulic systems used in these devices as a result of their tra-
ining and experience.
3.1. Keep the jack clean and lubricate all moving parts at regular in-
tervals (5), which must be clean and protected from aggressive con-
ditions at all times.
3.2. Only original spare parts should be used.
3.3. Prior to each use, check for bent, broken, cracked or loose parts
and solve the problem, if appropriate. If it is suspected that the jack
has been subjected to abnormal loads or has suffered any knocks,
withdraw it from service until the problem has been rectified.
3.4. If the oil level needs to be checked or refilled, with the piston
fully retracted, remove the filler plug and drain its contents into a con-
tainer. With the jack in a horizontal position, proceed to introduce the
necessary volume as indicated for each model in these instructions.
Make sure that no dirt enters with the new oil.
Following a period of prolonged intensive use, it is recommendable
to change the oil in order to extend the useful life of the jack.
Important: An excess of oil to the volume required may render the
jack inoperative.
3.5. Only use hydraulic oil, type HL or HM, with an ISO grade of ci-
nematic viscosity of 30 cST at 40º, or an Engler viscosity of 3 at 50ºC.
Extremely Important: Never use brake fluid.
3.6. When the jack is not in use, the screw, main piston and the pump
piston should be retracted to avoid corrosion.
Apply an anti-corrosion product to the piston, if appropriate.
Remove the handle from its position.
3.7. At the end of the useful life of the jack, drain off the oil and hand
it over to an authorised agent and dispose of the jack in accordance
with local regulations.
3.8. Both the repair kit, which exclusively contains the retainers and
joints of the jack and the spare part sets must be ordered using the
reference assigned in the table.
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