9.4.1.3
Checking hoisting solenoids and security bolts
● Check the hoisting solenoids and security bolts at regular intervals.
● Replace defective hoisting solenoids and security bolts before (re)commissioning.
9.4.1.4
Checking the plug connections.
Regularly check the plug connections to ensure they are seated correctly and the contacts are
not corroded.
Note
The fiber-optic cables for the gating boards must be properly inserted in the connectors.
9.4.1.5
Checking the cable and screw terminals
● Check the cable and screw terminals regularly to ensure that they are secure.
● Tighten the screws if necessary. When doing this, comply with the specified torques
● Check the cabling for defects.
● Replace any defective parts immediately.
9.4.1.6
Checking the thyristor electronics
● Check the thyristor electronics for contamination. Carry out this inspection when you service
the valves.
● Check whether the components are showing signs of failure. Examples of failure symptoms:
– Irreparable damage
– Traces of smoke
– Scorching
● Check the circuit boards with regard to the following criteria:
– Interruptions
– Short-circuits
– Minimum clearances
– Traces of smoke
– Scorching
See also
Maintenance
9.4 Preventive maintenance
SINAMICS GL150 6SL38555UN113KA0Z
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