Product Manual

Protections
Minimum
setting
Factory
setting
Maximum
setting
Compressor element outlet temperature
(shut-down warning level)
˚C 50 110 119
Compressor element outlet temperature
(shut-down warning level)
˚F 122 230 246
Compressor element outlet temperature
(shut-down level)
˚C 111 120 120
Compressor element outlet temperature
(shut-down level)
˚F 232 248 248
Specific protections for Full-Feature compressors:
Minimum
setting
Factory
setting
Maximum
setting
Dewpoint warning temperature ºC 10 25 99
Dewpoint warning temperature ºF 10 77 210
Service plan
The built-in service timers will give a Service warning message after their respective preprogrammed time
interval has elapsed.
For specific data, see section Preventive Maintenance.
Consult
Atlas Copco if a timer setting needs to be changed. The intervals must not exceed the nominal intervals
and must coincide logically. See section Modifying general settings.
Terminology
Term Explanation
ARAVF Automatic Restart After Voltage Failure. See section Elektronikon regulator.
Power recovery
time
Is the period within which the voltage must be restored to have an automatic restart. Is
accessible if the automatic restart is activated. To activate the automatic restart function,
consult Atlas Copco.
Restart delay This parameter allows to programme that not all compressors are restarted at the same
time after a power failure (ARAVF active).
Compressor
element outlet
The recommended minimum setting is 70 ˚C (158 ˚F). For testing the temperature sensor
the setting can be decreased to 50 ˚C (122 ˚F). Reset the value after testing.
The
regulator does not accept inconsistent settings, e.g. if the warning level is programmed
at 95 ˚C (203 ˚F), the minimum limit for the shut-down level changes to 96 ˚C (204 ˚F). The
recommended difference between the warning level and shut-down level is 10 ˚C (18 ˚F).
Delay at signal Is the time period during which the warning signal must exist before the warning message
appears.
Delay at start Is the time period after starting which must expire before generating a warning. The setting
should be less than the setting for the delay at signal.
Minimum stop
time
Once the compressor has automatically stopped, it will remain stopped for the minimum
stop time, whatever happens with the net air pressure.
Instruction book
2920 7110 00 73