Checking The Cable And Screw Terminals; Checking The Thyristor Electronics; Checking The Filter Mats - Siemens SINAMICS GL150 Operating Instructions & Installation Instructions

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
● Check whether the components are showing signs of failure. Examples of failure symptoms:
● Check the circuit boards with regard to the following criteria:
See also
Cleaning (Page 113)
9.4.1.7

Checking the filter mats

● Check the air filters in the cabinet doors for pollution.
● Clean the filter mats or replace them if the air flow is obstructed.
See also
Cleaning (Page 113)
Replacing filter mats (Page 111)
SINAMICS GL150 6SL38502UM114PA0Z
Operating Instructions Rev.201910281441 EXAMPLE
(Page 68).
the valves.
– Irreparable damage
– Traces of smoke
– Scorching
– Interruptions
– Short-circuits
– Minimum clearances
– Traces of smoke
– Scorching
Maintenance
9.4 Preventive maintenance
107