Manual for Induction Motors and Generators
62 - Maintenance
3BFP 000 050 R0101 REV E
***Following table for rotor type: Slip rings
7.3.1.5 Slip ring unit
7.3.1.6 Lubrication system and bearings
***Following table for bearing type: Rolling bearing
***Following table for bearing type: Sleeve bearing
Maintenance object L1 L2 L3 L4 Check / Test
Assembly V V / C V / C V / C Mounting, insulation
Brush holders v V / T V / T V / T Alignment
Brushes V V / T V / T V / T Arching, clearance
Slip ring cabling V V V V Wear, arching
Slip rings V / T V / T V / T V / T Wear, roundness, patina
Brush gear V V / T V / T V / T Insulation resistance
Pt-100 elements V V / T V / T V / T Resistance
Anticondensation heaters V V / T V / T V / T Operation, insulation resistance
Encoders V V V / t V / T Operation, general condition, alignment
Auxiliary terminal boxes V V / T V / T V / T General condition, terminals, wiring condition
Maintenance object L1 L2 L3 L4 Check / Test
Bearing during operation T T T / R T / R General condition, extra noise, vibration
Waste grease V V / C V / C V / C Condition, purging
Re-greasing V V / R V / R V / R According to bearing plate
Seals V V / D V / D V / D Leakage
Bearing insulation V / C V / C V / C / T V / C / T Endshield cleanliness, insulation resistance
Maintenance object L1 L2 L3 L4 Check / Test
Bearing assembly V V / T V / T V / T Fixing, general condition
Bearing shells V V V / T / D V / T / D General condition, wear
Seals and gaskets V V V / T / D V / T / D Leakage
Bearing insulation V V / T V / T / D V / T / D Condition, insulation resistance
Lubrication piping V V V / T D V / T / D Leakage, operation
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