Operating Mechanism Maintenance Maintenance
1HSB515409-100 en rev2 17
4.8 Catch gear
The operating mechanism is fitted as standard with one closing coil and two
opening coils, but can, on request, be equipped with double coils on the closing side.
Figure 4-8. Catch gear
• Check that the voltage to the coils does not fall below the minimum voltage,
see the delivery document for the operating mechanism.
• Check the play between the magnet arm and the auxiliary catch . The play must
be at least 1 mm. If the plays are outside the specified dimensions, replace the
entire catch gear.
Figure 4-9. Checking the clearance.
Item
1 Catch gear
Item
1 Auxiliary catch
2 Magnet arm
1
Closing catch gear
Opening catch gear
B20012
1 mm
1
2
B20013
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