Schaltbau CT1115/04 - Checks

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2019-03-06 / V1.0
Maintenance
Contactors CT/CU Series – Installation and Maintenance Instructions
1
2
2
3
3
1
Fig. 69: CT/CU 1230/04, 1215/08, 1230/08: Install new xed
contacts
1
2
2
3
3
1
Fig. 70: CT/CU 1215/10/11, 1230/10/11: Install new xed
contacts
5
6
5
6
Fig. 71: CT/CU 1215/11, 1230/11: Reattach the heat sinks
Re-install the contactor
X Re-install the lower module to the mounting
frame or plate.
X Connect the wires of the auxiliary switches.
X Connect the coil control wires.
X Install the protection caps for the auxiliary switch-
es and the coil terminal.
X Install the upper module to the lower module and
lock the upper module securely.
X Reconnect the main cables/busbars.
X Reconnect the earthing cable.
For detailed instructions about the above listed re-in-
stallation procedures refer to section “9. Installation”.
Checks
After the maintenance work is completed, do the fol-
lowing checks:
X Check the protective earth.
X Check the main connections.
X Check the control connections.
X Check the latching and locking between upper
and lower module.
X Check that both protection covers are tted.
X Perform several activation and deactivation op-
erations of the contactor without the main circuit
active.
X Check the function of the auxiliary switches:
Use a continuity tester to check that the wiring is
correct and the auxiliary switches are functioning
correctly.
X Check the pull-in voltage and drop-o voltage
according to the requirements of Schaltbau.
X After each installation and after replacement of
main contacts, contact bridge or after any other
modications, alterations or maintenance works,
always perform complete checks according to
these standards:
- IEC 60077-2
- IEC 60947-4-1