Maintenance Of The Coolant; Maintaining The Filter (Seated At An Inclination) - Siemens SINAMICS S120 Manual

7.4.2

Maintenance of the coolant

Note
Please refer to the safety notes of the manufacturer of the coolant additive!
Observe the environmental protection regulations as well as the local soil and water
protection regulations.
Usability
Experience has shown that although the coolant remains usable in plants for many years,
the antifreeze concentration in the system should be checked once per year. This check is
also advisable when liquid is added. Specialist dealers can provide antifreeze testers for the
particular coolant.
In addition, every two years, a 250 ml sample should be sent in for analysis and checking; to
do this, contact the manufacture of the coolant additive.
Observe the storage life of the coolant.
Safety regulations
The safety regulations of the manufacturer must be observed when handling coolant-water
mixtures.
The associated valid EU safety data sheet contains safety-relevant notes.
Disposal
Coolant-water mixtures must be disposed of, carefully observing the local regulations.
Recycling is preferred over disposal. Contact the manufacturer of the cooling medium agent.
7.4.3

Maintaining the filter (seated at an inclination)

The filter must be checked in regular intervals and cleaned when required.
To do this, the shutoff valve associated with the particular pump must be closed. The filter
element can then be screwed out.
The arrangement of the shutoff valves and filters is shown in Section "Interfaces in the
cooling circuit (Page 213)".
● For a Heat Exchanger Module with one pump, the drive lineup must be shut down.
● For a Heat Exchanger Module with two pumps (option W01) the filter can be serviced
during ongoing operation.
To do this, you must open the motor circuit breaker of the appropriate pump and can then
close the shutoff valve and remove the filter cartridge.
Opening the motor circuit breaker generates corresponding alarm messages in the
SINAMICS software, which are automatically deleted after reclosing.
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
Maintenance and servicing
7.4 Maintaining the cooling circuit
239