Apeks Supercritical The Duplex™ Operation Manual
31
Revision Date 8/28/2018
5.2.5. CO2 Supply PSI High/Low Alarm– CO
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supply bottle pressure is too high or low. Make sure
bottle is open and switch out if needed.
5.2.6. Code Needed Alarm – Monthly Code needed, go to code entry screen.
5.2.7. Diaphragm Compressor Ambient Temperature Alarm – The ambient temperature at the
diaphragm compressor is outside acceptable range.
5.2.8. Diaphragm Compressor Outlet PSI High Alarm – Compressor Outlet is high. Check gauge
on the temperature control heat exchanger to verify high pressure and check that the air
actuated ball valves match the positioning on the main screen.
5.2.9. Diaphragm Compressor Suction PSI High Alarm – Suction pressure to the diaphragm
compressor is too high. Check orifice size and target pressure, adjust accordingly. Check to
make sure compressor has a hot outlet tube, if not prime compressor or clean check valves.
5.2.10. Diaphragm Compressor Suction PSI Low Alarm – Suction pressure to the diaphragm
compressor is too low. Check to see if there is a larger pressure drop across separator filter,
remove and clean if necessary. Check bottle pressure, replace if necessary. Check orifice for
correct size and presence of a clog, clear clog/adjust size accordingly.
5.2.11. Diaphragm Rupture Shutdown Alarm – Over 15 psi of pressure was present in the isolation
cavity of the diaphragm compressor. Vent pressure if still present and check for oil. If oil is
present, call Apeks (740-809-1160 ext. 2) about replacing diaphragms. If no oil is present, reset
alarm on the manual screen, restart system and monitor the leak detect gauge for pressure. If
no pressure appears continue to run. If pressure rises slowly for the first few minutes of the run
but then stops climbing and no oil is present, vent to keep psi below 5 for the first few min and
then monitor for a few min after venting to be sure leak has stopped. If pressure climbs rapidly
or does not stabilize call Apeks about replacing diaphragms.
5.2.12. E-Stop Alarm – The emergency stop button has been pressed or power had been lost, make
sure button is backed out and “Reset E-Stop” on main or manual screen.
5.2.13. Extractor Not Equalizing Alarm – The extractor is not equalizing with the bottles on initial fill.
Check that bottles are open and have pressure. Check that the air actuated ball valves that are
indicated as open on the main screen are open, if not stop cycle and do a “Master Reset” on the
manual screen.
5.2.14. Extractor Water Flow Lost Alarm – Water flow to the extractor chiller loop has been lost.
Check that extractor chiller is on and that there are no kinks or clogged lines.
5.2.15. Extractor Ambient Temperature Alarm – The ambient temperature at the extractor stand is
outside acceptable range.
5.2.16. Extractor (Vessel A/B, Top/Bottom) PSI High Alarm– Extractor pressure is above the
acceptable pressure range. Check orifice for a clog, and clear if necessary. Check all pressure
readings on the main screen to see if there is a large pressure drop across any vessels, if so
recover and check material and extractor filters for clogs. Check that the air actuated ball valves
that are indicated as open on the main screen are open, if not stop cycle and do a “Master
Reset” on the manual screen.
5.2.17. Extractor (A/B) Vessel Temperature Alarm – Extractor temperature outside of acceptable
range, adjust extractor temperature setting.
5.2.18. Filter (1B/2B) PSI Drop Fault/Warning – The separator filter is causing too larger of a pressure
drop and needs to be cleaned/replaced.
5.2.19. Low System CO2 Pressure Alarm – The system does not have enough CO
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in order to run at
desired parameters. Check that bottles are open and have over 500 psi of pressure. Replace
bottles if necessary.
5.2.20. Oil Pressure Lost Alarm – Oil pressure in the diaphragm compressor has dropped below 15
psi. Check the diaphragm pump for leaks and if there is enough oil. Reset oil pressure alarm on
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