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2021-02-10 / V1.0
Maintenance
Contactors C195 Series – Installation and Maintenance Instructions
8.4 Corrective maintenance measures –
type C195 A/, B/, S/, T/, W/
The contactors are largely maintenance-free. Therefore
there is no general requirement to replace parts during
its service life.
However, if an excessive number of emergency shut-
downs or damage has occurred during operation,
Schaltbau offers original spare parts.
WARNING
The use of non-approved parts can lead
to accidents and serious personal injury
due to malfunction.
X
Only use original spare parts.
X
Do not combine individual parts
from different contactors!
8.4.1 Preparatory disassembly/assembly
steps – type C195 A/, B/, S/, T/, W/
DANGER
Before beginning any work on the con-
tactors, make sure that
X
there is no voltage present,
X
all safety regulations are fully ob-
served.
X
Be sure to observe section
“8.1 Safety” on page 32
.
To replace the arcing chamber, contact bridge unit and
main contacts, the following preparatory assembly
steps must be carried out, depending on the type of
contactor:
-
Disassembling the contact unit
-
Disassembling the armature
-
Removing the cover
-
Disassembling the connecting plate
-
Disassembling the contact bridge unit
Disassembling/assembling the contact
unit – type C195 A/, B/, S/, T/, W/
Tools required
-
Set of Torx bits or Torx screwdriver set
-
Torque spanner
Disassembly
ATTENTION
Incorrect installation of the contact unit due to two
possible installation positions leads to malfunctions
and destruction of the contactor.
X
Before disassembling, note the orientation of
the old contact unit in relation to the base plate
X
Unscrew the 2 screws (1) on the cover (7) of the
contactor.
X
Carefully lift the contact unit (2) off the magnetic
drive (3).
0.8-1 Nm
1
2
3
7
Fig. 54: C195 A/, C195 B/: Disassembling/assembling the con-
tact unit (the figure shows C195 A/, the procedure is
identical for C195 B/)
