Larzep HBM Series, Operating And Maintenance Instructions Manual

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Instruction Manual
Hydraulic Electrical Pumps “HBE” “HBM”
3. INSTALLATION AND START UP
3.1 INSTALLATION
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Read the instructions manual thoroughly and apply the contents.
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Make sure that the machine has not been damaged during transportation and is clean and complete.
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Place the machine in a stable and well‐protected area.
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Use hoses that are long enough to make sure the operator is away from the danger zone.
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Assemble the complete installation making sure that all accessories (hoses, quick‐couplers, valves, joints, pressure gauges, distributors,
cylinders, etc.) are properly connected. Check without a load as indicated in the next point. A good installation is essential to the proper,
risk‐free functioning of the machine, and should therefore be carried out by qualified personnel only.
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Connecting the hoses. Operation of the distributing valve:

Two‐position manual control. Single effect cylinder. Type: HBM _ _ 1 _.
o
The distributing valve has a single outlet for connection to the hose.
o
When the lever is set to position ‘P’ (towards the hose outlet), the cylinder moves out.
o
Turning the lever to position ‘T’ (opposite direction), causes the cylinder to return, because of the action of the spring or the
weight of the load itself.

Three‐position manual control. Single effect cylinder. Type: HBM _ _ 2 _.
o
Connect the hose to outlet ‘A’ (plastic plug). Do not use the connection point marked with ‘B’. This point should remain
plugged.
o
When the lever is set to position ‘A’, the cylinder moves forward. When the lever is in position ‘C’, it maintains the load in its
current position. And when the lever is set to ‘B’, the cylinder returns, because of the action of the spring or the weight of the
load itself.

Three‐position manual control. Double effect cylinder. Type: HBM _ _ 4 _.
o
Connect the cylinder’s forward hose (pressure) to outlet ‘A’ of the distributing valve, and the return hose to outlet ‘B’.
o
When the lever is set to position ‘A’, the cylinder moves forward. When the lever is in position ‘C’, it maintains the load in its
current position, and when the lever is set to ‘B’, the cylinder returns, because of the pressure applied by the oil distributed
by the pump.

Two‐position electrical control. Single effect cylinder. Type: HBE _ _ 5 _.
o
The distributing valve has a single outlet for connection to the hose.
o
When the UP button of the remote pendant is pressed, the cylinder moves forward. When the button is released, it moves
back, because of the action of the spring or the weight of the load itself.

Three‐position electrical control. Single effect cylinder. Type: HBE _ _ 6 _.
o
Connect the hose to outlet ‘A’ (plastic plug). When the ‘UP’ button on the remote pendant is pressed, the cylinder moves
forward. When it is released, the cylinder maintains the pressure level and the load remains where it is. When the ‘DOWN’
button is pressed, the cylinder returns because of the action of the spring or the weight of the load itself.

Three‐position electrical control. Double effect cylinder. Type: HBE _ _ 7 _.
o
Connect the cylinder’s forward hose (pressure) to outlet ‘A’ of the distributing valve, and the return hose to outlet ‘B’. When
the ‘UP’ button on the remote pendant is pressed, the cylinder moves forward. When it is released, the cylinder maintains
the pressure level and the load remains where it is. When the ‘DOWN’ button is pressed, the cylinder returns because of the
pressure applied by the oil distributed by the pump.
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Make sure that the voltage level in the mains coincides with what specified for the machine.
3.2 CHECKING THE CORRECT FUNCTIONING OF ALL MACHINE PARTS
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Replace the transportation plug with the ventilation plug (supplied in a plastic bag).
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Check the tank level.
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Connect the mains electricity supply to the terminal strip in the electrical cabinet.
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Make sure that the remote pendant is deactivated and/or that the manual control is set to ‘C’.
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With HBE‐type electrical control pumps, rotate the electrical cabinet’s switch to position ‘1’. Press the electrical cabinet’s green button to
start the motor.
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Check that the direction of rotation coincides with that indicated by the arrow on the electric motor lid. If the directions do not coincide,
stop the motor (by pressing the red switch), rotate the switch to ‘0’ and disconnect the equipment from the main electricity supply. Swap
the two cables around in the terminal. Repeat the operation and check that the direction of rotation is now correct.

With HBM‐type manual control pumps, press the green button in the motor starter or the black button on the circuit breaker box to start
the motor. Check the direction of rotation as explained in the previous point.
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With electrical control pumps, when the ‘UP’ button on the remote pendant is pressed, the cylinder piston moves forward once the hose
has filled with oil. The piston moves back when the ‘DOWN’ button is pressed.
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Practise moving the piston back and forth.
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With manual control pumps, when the lever is set to position ‘A’ or ‘P’, the cylinder piston moves forward once the hose has filled with oil.
The piston moves back when the lever is set to position ‘B’ or ‘T’.

After making sure that no one is in the danger zone, carefully extend the cylinder as far as it will go.
VERY IMPORTANT:
BEFORE DOING THIS, MAKE SURE THAT THE CYLINDER OR HYDRAULIC TOOL IS DESIGNED TO WITHSTAND ALL THE
PRESSURE AT THE END OF ITS STROKE.