Document number: SG104148TEN
Revision: B01
Issue date: 20.8.2012
Copyright© 2012 Sécheron SA - This document is not contractual and contains information corresponding to the level of technology at the date of release.
File: d-UR46-8S_maint_en.fm
D-41
UR46-81/82S
Maintenance
D.10
Replacement of the closing device
Removal
a) Disconnect the wires (1).
b) Remove both M6 earth connection screws (2).
c) Unscrew the three M8 nuts (3) and remove the entire device (4).
04629-S
Reassembling
d) Insert the entire device (4).
e) Ensure that the fork unit (5) is properly turned, with its notches for the catches (7) under-
neath, and properly placed on the moving contact catches (7).
f)
Holding the device (4), tighten the three M8 nuts (3) with their washers.
g) Lift the fork (5) by hand and check that it remains properly in place when released.
h) Check the X and Y clearances and adjust them if necessary (see §
D.6.3
and
D.6.4
).
i)
Connect both (or the four for 24 V coil) wires (1), with the blue one on the left.
j)
Connect the earth connection (2) using both M6 screws.
k) Slightly grease the fork (5) and the catches (7).
D.11
Replacement of the closing core and the spring
a) Remove the closing device (1) (see §
D.10 "Replacement of the closing device"
) and the fork
unit (see §
D.8 "Replacement of the fork unit"
).
b) Stand it on a bench in vertical position and remove the four screws (2) and the cover (3).
c) Remove the closing core (6) and the spring (7).
d) Reassemble in reverse order with new closing core and spring.
02681
Important!
Never touch the screw (32).
5
2
3
1
4
32
7
3
Important!
Do not change the position of the flange (4) while working.
Mark its position (5) with a felt-tip pen before removing the closing core.
2
6
3
1
7
5
4
6
5
1
Summary of Contents for UR46-81S
Page 68: ...Secheron ...
