Appendix
9.2.7
Sound pressure level
Maximum noise level LpA for 2-terminal 50Hz/60Hz motors, in
dB(A)
Motor power
rating
0.37 kW
0.55 kW
0.75 kW
1.10 kW
1.50 kW
2.20 kW
3.00 kW
4.00 kW
5.50 kW
7.50 kW
Frequency
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
50
Hz
60
Hz
ETLB-S 15–60
59
61
59
61
61
63
ETLB-S 20–100
59
61
59
61
61
63
ETLB-S
125–125S
59
61
59
61
61
63
61
63
65
67
65
67
ETLB-S
125–125L
61
63
61
63
65
67
65
67
ETLB-S 32–125
65
67
65
67
68
70
70
72
70
72
ETLB-S 32–160
70
72
70
72
70
ETLB-S 40–125
65
65
67
68
70
70
72
70
72
70
ETLB-S 40–160
70
70
72
70
ETLB-S 50–125
70
70
72
70
ETLB-S
80–200
1)
66
68
66
Tab. 12
Noise level LpA to DIN EN ISO 11203
1) 4-wire
Measuring conditions:
•
Distance to the pump: 1 m
•
Operation: free of cavitation
•
Motor: IEC standard motor
•
Tolerance ±3 dB
9.3
Maintenance schedule
Designation
Interval
Maintenance
Operating
temperatures
weekly
Check storage
temperature.
Check motor temperature.
Undoable
screwed
connections
weekly
Check for correct and tight
¿
tting.
Impeller
as
required
Check impeller for wear
and damage.
Clean or replace the
impeller.
Tab. 13
Maintenance schedule
32
ETLB-S, ETLB-ST
BA-2018.01.25 EN
301 356
