Note
The fiber-optic cables for the gating boards must be properly inserted in the connectors.
9.4.3.5 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 102)
Replacing filter mats (Page 101)
9.4.3.6 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.
9.4.3.7 Checking the cooling circuit
● Check the entire cooling circuit for leaks. If you find a leak in a pipe coupling, tighten the
nut by a ¼ turn
● Compare the measured conductivity value with the permissible conductivity value for the
system (≤ 0.6 µS/cm). You must replace the ion exchanger if this value is close to 1 µS / cm.
● Check the water level in the compensating chamber of the deionized water circuit. If the
level is too low, add some more water. If the level is too high, drain some water until the
level is correct.
See also
The external raw water circuit (Page 32)
Maintenance
9.4 Preventive maintenance
SINAMICS SM120 6SL38855?B
98 Operating Instructions 12/2015
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