L2275
Emax UL
18/132
Doc. N°
Mod.
RH0109002
Apparatus
Scale
Page N°
Fig. 32
7
5
6
2
1
4
3
5
7
9
8
E1-E3
E4-E6
6
9
8
2
1
3
4
8.2
Maintenance program
8.3
Maintenance operations
8.3.1
Preliminary operations
– Remove the flange (1) of the trip unit, turning the screws (2) as shown in the figures
– Remove the front escutcheon plate (3) by removing the four screws (4)
– Remove, if present, one or both side guards (5) by removing the front (6) and lateral (7) screws
– Remove the arcing chambers (8) by removing the screws (9).
Maintenance operations
Interval
Installations in normal rooms
Installations in dusty or polluted rooms
General inspection (see par. 8.3.2)
One year or after a short circuit trip
Six months or after a short circuit trip
External visual check and inspection of
One year
Six months
the power section
Operating mechanism maintenance (par. 8.3.4)
One year or 10000 operations for E1, E2 and E3
Six months or 10000 operations for E1, E2 and E3
One year or 5000 operations for E4 and E6
Six months or 5000 operations for E4 andE6
Checking intervention of the trip unit
One year
Six months
Power circuit breaker maintenance (par. 8.3.5)
Every 10000 operations for E1, E2 and E3
Every 5000 operations for E4 and E6
Power circuit breaker
Mechanical life (*)
Electrical life (*)
N° of operations
Frequency
N° of operations
Frequency
(operations)
(operations/hour)
(operations)
(operations/hour)
E1
800
20000
30
10000
30
1200
20000
30
10000
30
E2
1200
20000
30
10000
30
1600
20000
30
10000
30
E3
1200
15000
30
10000
30
1600
15000
30
10000
30
2000
15000
30
8000
30
2500
15000
30
8000
30
E4
3200
8000
30
5000
30
3600
8000
30
5000
30
E6
3200
8000
30
5000
30
4000
8000
30
5000
30
5000
8000
30
3000
30
(*) With ordinary maintenance
With regular maintenance, SACE Emax power circuit breakers, either with or without geared motor, can sustain the following operation cycles
without replacement of parts.