Checking The Plug Connections; Checking The Cable And Screw Terminals; Checking The Cooling Circuit; Maintenance - Siemens SINAMICS SL150 6SL38655UM427AA02 Operating Instructions Manual

9.3.1.4

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.
9.3.1.5

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.
9.3.1.6

Checking the cooling circuit

● Check the entire cooling circuit for leaks. If you find a leak in a pipe coupling, tighten the nut
● Compare the measured conductivity value with the permissible conductivity value for the
● Check the water level in the compensating chamber of the deionized water circuit. If the
9.4

Maintenance

9.4.1

Replacing a fan

Injury caused by rotating fan
If the converter is equipped with a temperature-controlled fan, the fan can run on even if the
power section is switched off. You can be injured if you touch the fan.
● Wait until the fan has shut down.
SINAMICS SL150 6SL38655UM427AA02
Operating Instructions Rev.201910281507 EXAMPLE
(Page 48).
by a ¼ turn
system (≤ 0.6 µS/cm). You must replace the ion exchanger if this value is close to 1 µS / cm.
level is too low, add some more water. If the level is too high, drain some water until the level
is correct.
CAUTION
Maintenance
9.4 Maintenance
69