BeaconMedaes 4107 9006 25 Installation, Operation And Maintenance Instructions page 17

"Oil-Less" Scroll Laboratory Air
3.0 System Operation
or vibrations. Switch the compressor back to the
"Off " position on the touchscreen.
Figure 3.5 Unit Screen - Automatic Mode
After testing each compressor, if everything
appears normal, put each compressor into the
"Automatic" mode and allow each compressor to
run until pressure builds in the air receiver. The lag
compressor should stop fi rst when the pressure
reaches its set point on the controller. Pushing the
reset button on the control panel can now reset
the lag alarm. See Figure 3.6. The lead compressor
should stop when the pressure reaches 140 psig.
Check for any leaks in the piping up to the inlet
isolation valves of the dryers. Repair leaks, if
needed.
Figure 3.6 Main Screen - Reset Button
4107 9006 25.11
Reset Button
Open the inlet isolation valve on one of the dryers.
The pressure reading on one of the gauges should
be the same as the panel. The other gauge will
normally read 0 psig, and airfl ow will be coming
from the dryer purge exhaust muffl er. It is possible,
but unlikely, that the outlet dew point may be low
enough to activate the purge saving feature at
start-up. If the purge saving feature is activated,
then both dryer pressure gauges will be at the
same pressure as the control panel and there will
be no fl ow from the dryer purge exhaust muffl er.
Check for air leaks.
Adjust the pressure regulator to the desired
pressure setting.
Open the outlet isolation valve of the dryer/fi lter/
regulator group. Check for air leaks.
Open the Dew Point sensor isolation valve.
Slowly open the outlet isolation valve to allow air
to fl ow out to the facility.
Adjust the pressure regulator setting if necessary.
If everything appears normal, open the inlet
isolation valve of the other dryer/fi lter/regulator
assembly. If the dryer pressures appear as expected,
open the dryer/fi lter/regulator outlet isolation
valve. Close the other dryer/fi lter/regulator inlet
and outlet isolation valves.
CAUTION: Only one dryer/fi lter/regulator group
should be on line at a time.
Adjust the pressure regulator to the desired
pressure.
Adjust the pressure regulator setting, if necessary.
The dryer should purge until the dew point
monitor reading is below minus 10°C. If dew
point is below minus 10°C; both pressure gauges
of the on-line dryer will read the same.
Observe the system for normal operation.
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