Operating and maintenance instructions
EN
16
LI 770.03
6.2 Oil change
For a correct operation, oil change should be done when the pump is still warm.
ATTENTION:
Use protective gloves to avoid injury caused by heat.
If there are big quantities of pollution or if there is some water, clean the pump by letting
it run with fresh oil at maximum vacuum level.
Change again the lubricating oil (see “commissioning” and “recommended oil table”).
6.3 Coupling rubber insert replacement
Remove the motor (pos.23) assembly unscrewing the screws (pos.17) and check the
coupling rubber inserts (pos.20) conditions. If necessary, replace it.
Assemble by screwing the screws.
ATTENTION:
please use suitable lifting equipment.
Weight expected for the electric motor between 23 and 27 Kg
NOTE:
the operation with damaged elastic element causes an anomalous pump noise,
especially when starting the pump and may lead to coupling and pump shaft failure.
6.4 Exhaust filters replacement
Very dirty oil separators may cause a considerable pump temperature increase and in
extreme cases oil lubricant spontaneous ignition.
Maximum allowed pressure in the tank is 0.7 bar measured at the maximum capacity
(when the pump is working with the inlet against atmospheric pressure).
If there is the pressure gauge on the tank, check the oil separator blockage with the
pump still warmed-up.
For the replacement remove the cover (pos.50) unscrewing the respective screws.
Remove the screws (pos. 48) and replace the oil separators. If necessary replace the O
rings (pos.44) and the gasket (pos. 49).
For the assembly proceed the opposite way.
NOTE:
the oil separator must be fitted so that the external tongue is in the
lowest point, while the holes for the passage of air, which are inside,
stay in the upper point.
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