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
Service plan
The built-in service timer will give a Service warning message after a preprogrammed time interval has
elapsed.
Also see section Preventive maintenance schedule.
Consult Atlas Copco if a timer setting has to be changed. See section
Calling up/modifying service timer
. The intervals must not exceed the nominal intervals and must coincide logically.
Terminology
Term
Explanation
ARAVF
Automatic restart after voltage failure. See section
and
.
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 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 shut-
down signal
Is the time for which the signal must exist before the compressor is shut down. If it is
required to program this setting to another value, consult Atlas Copco.
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. Consult Atlas Copco if a setting
lower than 20 seconds is required.
Unloading/
Loading pressure
The regulator does not accept illogical settings, e.g. if the unloading pressure is
programmed at 7.0 bar(e) (101 psi(g)), the maximum limit for the loading pressure
changes to 6.9 bar(e) (100 psi(g)). The recommended minimum pressure difference
between loading and unloading is 0.6 bar (9 psi(g)).
Instruction book
68
2920 7180 30
Summary of Contents for GA 30+
Page 1: ...Atlas Copco Oil injected rotary screw compressors GA 30 GA 37 GA 45 Instruction book ...
Page 2: ......
Page 15: ...Motor side view GA 30 up to GA 45 Pack Instruction book 2920 7180 30 13 ...
Page 16: ...Service side view GA 30 up to GA 45 Pack Instruction book 14 2920 7180 30 ...
Page 17: ...Motor side view GA 30 up to GA 45 Full Feature Instruction book 2920 7180 30 15 ...
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