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
