HLA
– Double acting- hydraulic linear actuator
Use and maintenance manual
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Pag. 26
Contents may change without notice
solvent and blow through with oil. If the filter is made of cellulose, it
must be replaced when clogged.
Picture 11
– Level measuring stick
5.1.1 Check and restore oil level in the hydraulic manual
handpump ( refer to chapt. 7.2 table 3 )
During the actuator operation the oil tank has to be closed (not in
connection with the atmosphere). Then avoid cavitation it is
necessary to proceed as follows for the check of oil level into the
tank:
1) Unscrew the dipstick (1).
2) Move the actuator into open position.
3) Check that the oil level into the tank (4) is in correspondence of
the “MAX LEVEL” notch of the dipstick.
4) By leaving the dipstick unscrewed move the actuator, by the
pneumatic control or by the hand pump, to closed position.
5) Screw and tighten the dipstick.
If necessary substitute or added the oil, proceeding as follow:
❑
Remove the dipstick (1) from the tank cover (22).
❑
Unscrew the plug (27) and the washer (9) to drain all the oil.
❑
If some dirt or/and sludge is found in the oil drained from the tank,
before filling with new oil in the tank, disassemble the oil tank tube,
by unscrewing the two cap nuts (2), and clean the internal surfaces
of the tank. If necessary substitute the gaskets (21) of the tank.
❑
Replace the plug (27) and the washer (9) into the plate (11) and
tighten.
❑
Pour the new oil into the tank through the dipstick hole (1) on the
cover (22).
❑
Replace the dipstick (1).
❑
Add oil (Table 2) if in the tank the level is BELOW MINIMUM Picture
13).
