4
INSTRUCTION MANUAL
Column Press with Hand Pump
3.4
SAFETY PREVENTION ACTIONS AGAINST OTHERS RISKS
RISKS DUE TO HYDRAULIC ENERGY
The hydraulic pump is equipped with an internal security valve in the tank, out of operator’s control and rated at 700 Kg./ cm
²
3.5
SECURITY IN MAINTENANCE
All the maintenance operations must be performed while the machine is stopped avoiding this way any potentially dangerous situation. A poor maintenance
program of the press does not increase the risk, but obviously will revert in a lower performance.
The hydraulic pump is mounted out of the frame and access is very easy. To disassemble the pump unscrew the cover screws. In order to disassemble the
cylinder it is required first to disassemble the hoses and this from the frame.
ISOLATION OF THE POWER SUPPLY
Disconnect the rapid coupler from the pump.
3.6
INDICATIONS
INFORMATION DEVICES
In the pump: Oil level and oil filling tap
In the cylinder: A gauge in order to know the operating pressure anytime.
The press, the cylinder and the pump have their corresponding serial numbers marked on them. In addition to it, you can find a sticker label showing the commercial
reference, capacity, working pressure, name and address of the manufacturer.
4. TRANSPORT AND INSTALLATION.
The machine is delivered properly packed in a wooden ballet. For it’s handling, it is recommended to use a forklift truck or a crane. In the last case, it is necessary to
make the slings trespass the arc of the frame. When doing this operation, you should be cautious and prevent the flexible hoses and couplings from any damage.
HYDRAULIC CONNECTION
Unscrew the rapid coupler site in the cylinder, and connect the hose, screwing the rapid coupler to the limit with the hand.
INSTALLING THE GAUGE
1-Replace the threaded tap in the top of the cylinder by the gauge, which is supplied separately.
2-Tighten the gauge cone to the gauge adaptor seat by using a flan wrench size 22.
3-Hold the gauge screen by hand during threading process and after reaching a comfortable reading position set the gauge screen free so that it turns the last quarter
solidarily with the thread.
CHECKING THE RIGHT OPERATION OF ALL DEVICES AND MECHANISM
1º- Select the working maximum pressure. In manual presses 700 Kg./cm
²
.
2º- Put the hand in the lever.
3º- Push the lever several times.
4º- Check the cylinder advances.
5º- Check that the cylinder piston goes back pushed by the internal spring. In both cases, to maintain the movement is necessary let the lever without movement.
6º- Without put anything in the press, repeat the advance movement, until reaching the cylinder full stroke. In that moment the pressure will start to be increased and
we can observe it now in the gauge. This pressure will go on increasing until reaching the installation maximum pressure, previously chosen. In this stage, the cylinder
maintains the reached pressure, (the gauge maintains the reading). Check there are no leaks in the installation (gauge intake, couple, etc.)
7º- To retract the cylinder and eliminate the installation pressure open the washer turning it to the left. The piston retracts pushed by the internal spring. The return may
be slower at the end of the backstroke.
8º- Put the material to be treated in the press.
5. MAINTENANCE.
The hydraulic circuit of the press is closed, so in normal conditions no oil leakage should be coming up.
In case of oil leakage, after the proper repairing work, you should fill up the tank with hydraulic oil by LARZEP (
Ref. AZ8901
); the pump is equipped with an oil level
indicator to control the need quantity of oil.
As far as a non-continuous use of the press is concerned (1 hour per day), oil replacement should be done once a year.
USE ONLY LARZEP HYDRAULIC OIL
Other grades of oils or types of hydraulic fluid (such as brake fluid) may affect the performance of the equipment or cause the deterioration of the seals.
Always use the original LARZEP parts to prolong the service life of your hydraulic equipment.
LARZEP S.A
. or your authorized dealer can supply you with original
parts for simple maintenance work.
The machine is stable enough to operate without fixing, but if is placed in an area commonly operated by mobile machinery (cranes,
lifting equipment…) it is strongly recommended to fix it to the desired place by drilling the supporting plates.
DO NO ATTEMPT TO FILL THE PUMP WITH OIL WHILE IT IS CONNECTED TO A CYLINDER WHICH IS SUSTAINING A LOAD
BECAUSE IT MAY OVERPRESSURIZE THE RESERVOIR WHEN THE PISTON RETRACS AND CAUSE DAMAGE OR INJURY
To empty the tank, you should remove the cover and take the oil out to another container. Please, bear in mind the existing rules for waste
processing when handling the used oil. Keep greasy and lubricated the pin bearings, the piston and in general all the parts that might be in
friction