Operating and maintenance instructions
EN
17
LI 2333.03
6.2 Oil change
For a correct operation, oil change should be performed when the pump is still warm.
WARNING:
Use protective gloves to avoid injury caused by heat.
Please refer to Figure 8, section 5.6.Unscrew the oil filling plug (E) and the discharge
plug (G) only after having placed underneath the pump tank a suitable container (proper
size and shape) for collecting the total quantity of oil.
Once the oil in tank has completely been discharged from the tank, reassemble both
plugs (“E” and “G”) and let the pump run under vacuum for about one minute, so that
the lubricating/cooling line gets emptied and any oil residual keeps inside the pump.
Then remove the plugs and discharge the rest of the oil.
If the oil is polluted or if some water is in the oil, clean the pump by letting it run with a
suitable quantity of oil (up to the minimum level shown on the tank) at maximum vacuum
level for at least 5 minutes.
Drain the oil again.
Replace the oil filter Figure 9 (pos. C) and follow up to fill with fresh oil (please see “com-
missioning” and “recommended oil table”).
6.3 Coupling elastic element replacement
Please refer to Figure 9.
Remove the motor assembly (pos. D1) unscrewing the screws (pos. D2). Check the elastic
element (pos. D) conditions. If necessary, replace it. Reassemble by means of the screws.
WARNING:
please use suitable lifting equipment.
Weight expected for the electric motor between 29 and 35 Kg
depending on the versions.
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.
