ABB AMA - Recommended Maintenance Program; General Construction

Manual for High Voltage Process Performance Motors
Maintenance - 49
3BFP 000 063 R0101 REV D
The Level 4 maintenance should be performed after every 80 000 equivalent operating hour.
When a L4 maintenance is conducted it replaces the L1, L2 or L3 maintenance otherwise
scheduled, and it leaves their rotation unaffected, see Table 7-1 Maintenance intervals.
7.3.1 Recommended maintenance program
Abbreviation used in maintenance program:
• V = Visual checking
• C = Cleaning
• D = Disassembling and assembling
• R = Reconditioning or replacement
• T = Testing and measurement.
Not all options are applicable for all machines.
Table 7-1. Maintenance intervals
7.3.1.1 General construction
Main supply connection
MAINTENANCE INTERVAL
In equivalent operating hours or time period, which ever comes first
L1 L2 L3 L4
Maintenance
object
4 000 Eq. h
12 000 Eq. h
20 000 Eq. h
28 000 Eq. h
8 000 Eq. h
16 000 Eq. h
24 000 Eq.h 80 000 Eq.h
½ year Annual 3-5 years Overhaul
Check / Test
Maintenance object L1 L2 L3 L4 Check / Test
Machine operation V / T V / T V / T V / T Starting, shut down, vibration measurement, no-load point
Mounting and foundation V V / T V / T V / T / D Cracks, rust, alignment
Exterior V V V V Rust, leakage, condition
Fastenings V V / T V / T V / T Tightness of all fastenings
Anchor bolts V V V / T V / T Fastening, condition
Maintenance object L1 L2 L3 L4 Check / Test
High voltage cabling V V / T V / T V / T / D Wear, fastening
High voltage connections V V / T V / T V / T / D Oxidation, fastening