Manual for High Voltage Process Performance Motors
Maintenance - 51
3BFP 000 063 R0101 REV D
7.3.1.4 Lubrication system and bearings
7.4 Maintenance of general constructions
To ensure a long life span for the general construction of the machine, the machine exterior
should be kept clean and should periodically be inspected for rust, leaks and other defects. Dirt
on the machine exterior exposes the frame to corrosion and can affect the cooling of the
machine.
7.4.1 The tightness of fastenings
The tightness of all fastenings should be verified regularly. Special focus should be given to the
grouting, the anchor bolts and the rotor parts, which must remain correctly tightened at all times.
Loose fastening in these parts can lead to sudden and severe damage to the entire machine.
General values for tightening torques are presented in Table 7-2 General tightening torques.
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
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