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Maintenance
L series pumps are delivered lubricated with SKF LGWA2/1 grease, in case the bearings require another type of grease due to
their operating conditions, it is necessary to carry out a complete cleaning of the bearings and housing, removing all the
existing grease, before applying the new grease.
7.2.2
Oil Lubricated Bearings, Model L80 4 and 5 stages
For a bearing to operate reliably, it is essential that it is adequately lubricated in order to avoid direct metallic contact between the
rotating elements, raceways and cages, prevent wear and protect the bearing surfaces against corrosion. Therefore, the choice of
the right lubricant and lubrication method, as well as proper maintenance, are matters of great importance.
The recommended oil for L series pumps in normal operation (bearing temperature up to 90°C) is ISO Grade VG 68 oil for all
models.
1400 hours
1650 hours
2500 hours
Bearing Lubrication
Equipment operating at 3600 rpm:
Equipment operating at 3000 rpm:
Equipment operating at 1800 rpm:
Equipment operating at 1500 rpm: 3250 hours
NOT
E
7.2.2.1
Oil Change
The oil should be changed after the first 200 operating hours for new bearings and then every 2000 operating hours or 3 months,
depending on which comes first.
•
Before changing the oil, the pump must be started in order to fluidize the oil.
•
Loosen the upper vent plug and the lower drain plug.
•
Drain the oil from the support and let it drain.
•
Replace the lower plug and proceed with the filling as indicated in the previous section.
After some time of operation, the oil level in the reservoir should be checked. The reservoir should always be full of oil, and the oil
should be replenished by means of the oil level maintainer.
7.2.2.2
Oil Level
The oil level inside the bearing body, for a correct lubrication and cooling of the bearings, corresponds to the level that covers half
of the lower ball of the bearings, see figure 26. The oil level maintainer system is designed so that with a correct filling procedure,
this optimum level is automatically maintained for pump operation.
As the system is designed to maintain the optimum oil level, any excess oil will tend to overflow out of the bearing body, for
example through the labyrinth seals, so it is essential to be very careful in the filling and oil level maintenance procedure. Excess
oil also means overheating of the bearings.
Maintenance
!
WARNING
Summary of Contents for L Series
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