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V. 2.0
The membrane must be fitted with the piston at its lower rest position and with its edges
perfectly inserted in the groove running round the circumference;
e) Re-assemble the heads and lock the related screws;
f) Fill the pump with oil (use only SAE 30 motor oil) through the tank while at the same
time turning the shaft manually. Once the manual operation has been completed,
proceed with the Installation as before taking care to effect the related “checks before
use”.
g) Check the oil level with the pump rotating at 0 pressure until all air bubbles have been
evacuated.
h) Once the clearing operation has been completed close the tank with the appropriate
plug.
After the first check of the oil level carry out a second check when the pump is
under pressure. Check the level of the oil frequently during the first hours running
to avoid damage to the pump.
Always check, whenever replacing the membranes, that the suction and delivery
side valves are not worn or blocked by residues. Valve malfunction is often the
cause of the early breakage of the membranes.
7.3) OIL CHANGE
ONLY USE SAE 30 MOTOR OIL.
The first oil change should be made after 500 hours of use following the steps set out
below:
a) Remove the filling and discharge plugs;
b) Leave the oil to drain out rotating the pump shaft manually;
c) It is advisable to clean the inside of the tank with diesel;
d) Replace the discharge plug and pour the oil into the tank rotating the pump shaft;
e) Start the pump for the first few minutes at "0" pressure to allow complete lubrication
of the internal parts and the evacuation of any air under the membrane;
f) Check, still with the pump running, the level of oil within the tank. If this is not visible
it is necessary to add oil until the condition described above is achieved.
A periodic oil change has to be effected for those models of pump without a discharge
plug. This should be done at the same time as the check up carried out on those parts of
the pump subject to wear and tear, recommended for the end of each season. The
discharge of the oil is effected by disassembling the piston head and the related lining.
WARNING! Over-filling with oil may create pressure inside the pump leading
to possible leakages, the expulsion of the oil seal or the breakage of the
membranes.
Use only SAE 30 MOTOR OIL for any top up or oil change.
WARNING! The used oil must be kept in a place well away from children and
from heat sources until disposed of in the proper way.