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
