Filter
Top Products
Instruction book
2920 1521 00 11
1.5 Regulating system on SF Multi
SF Multi are provided with an Elektronikon® regulator (Fig. 1.11) to control the compressor.
The following is a short description of the main functions of the regulator. Consult section 8 for a
detailed description of all functions.
1.5.1 Controlling the compressor
The Elektronikon regulator keeps the net pressure within programmable limits by starting and stopping
the compressor modules, depending on the air consumption. The regulator distributes the running
time among the compressor modules, taking into account the availability and number of running hours
of each compressor module.
When the compressor has stopped automatically and the net pressure decreases, the regulator will
start a compressor module before the net pressure has dropped to the starting pressure to prevent the
net pressure from falling under the programmed minimum level.
1.5.2 Protecting the compressor
If one or more compressor modules are shut down due to a protection function a warning message will
be shown on the display.
The compressor will be shut down in case temperature switch (TSHH20-Fig. 2.8) trips. See also
section 8.3.2.
Warning
Before carrying out any inspection or repair, stop the compressor, switch off the voltage, open the
isolating switch and depressurize the compressor.
After remedying, switch on the voltage and press the key “Reset” (F3).
1.5.3 Monitoring components subject to service
A number of service operations are grouped in plans (called Service plans I, A, B and D). Each
Service plan has a programmed time interval. If a time interval is exceeded, a message will appear on
the display to warn the operator to carry out the service actions belonging to that plan.
1.5.4 Automatic restart after voltage failure
The regulator has a built-in function to automatically restart the compressor if the voltage is restored
after voltage failure. For compressors leaving the factory, this function is made inactive. If desired,
the function can be activated. Consult Atlas Copco.