OIL-HYDRAULIC PRESSES WITH TWO UPRIGHTS
OPERATION AND MAINTENANCE MANUAL
15
5.2
FILLING OF OIL TANK
First check that the oil-hydraulic circuit is as it should be and that the drainage tap is closed. Then fill the oil
tank.
CAUTION:
The instructions given below must be followed otherwise the pump may not be primed and
therefore could be seriously damaged if activated.
1.
Open the breather cap and the filler cap (if fitted) located on the head near the pump; the cap is painted red
for easy detection.
2.
Fill the tank with ESSO NUTO H 46 oil until the normal level is reached, using a mesh filter with a filtration
rating of 10 µ. After having filled the tank, fill the pump with oil (only if the pump itself is fitted with a filler
cap).
3.
After having made sure that the machine is disconnected from the electricity mains, remove the cover of the
fan located on the main motor.
4.
Manually turn the motor clockwise until the pump is primed (priming is indicated by an increase in the
resistance of the motor to manual rotation).
5.
Refit the fan guard and replace the breather cap and the filler cap (if fitted) making sure that this is correctly
sealed.
5.3
CONNECTION TO THE ELECTRICAL MAINS SUPPLY
CAUTION:
Before carrying out any connection to the electrical mains supply, check that the voltage
available on the installation premises is the same as the voltage indicated on the machine
test certificate.
OMERA does not normally supply the general protection device against short-circuits and overloading; this
device should be installed by the user in proximity to the machine and should be capable of sustaining the
maximum current required by the load.
DANGER:
The following operations should be carried out with the voltage disconnected.
The cable, which connects the machine to the three-phase electrical mains supply, is inserted into the control
panel through the opening in the bottom and brought to the terminal board where the power terminals L101,
L102, L103 are available. Once the connection has been made, fasten the plastic cases over the terminals in
order to avoid accidental direct contact with the parts supplied with voltage.
The installed electric power and the cross-section of the electric connection cable are stated on the test
certificate attached to this manual.
Furthermore the earth wire of the premises
(PE)
should be connected to the earth bar in the electric control
panel.
Once the connection to the three-phase electrical mains supply has been carried out and the auxiliary circuits
have been supplied with voltage by using the controls on the push-button board, motor rotation should be
activated to check that the rotation direction is correct (clockwise); if the motor turns anticlockwise, the two
phases of the power line (L101, L102) should be inverted, observing the recommendations above.
