Apeks Supercritical The Duplex™ Operation Manual
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Revision Date 8/28/2018
5. Troubleshooting
5.1. System Messages
5.1.1. Leak Detect Switch Tripped, when pump stops, check leak detect valve for hydraulic oil.
If no oil is present, press OK. If there is oil present, press OIL FOUND – Follow prompt.
See Diaphragm Rupture Shutdown Alarm and follow steps.
5.1.2. E-stop Reset – Resets the emergency stop when pressed. Make sure E-stop button is backed
out.
5.1.3. Payment due by end of month – Lease payment is due by the first of the month or system will
not run.
5.1.4. Check orifice size. Elevated separator pressure detected. – Separator pressure has
maintained over 400 psi for 5 minutes. Check to make sure the orifice size you want is in the
separator and that it is tight. Separator pressures between 400-420 with the extractor at the
target pressure can be ignored but pressures over 400 with target pressure not reached check
the following. Prime pump for 10 min, check/clean check valves on diaphragm pump, and
contact Apeks about other options.
5.1.5. Diaphragm pump pressure switch tripped – see Diaphragm Rupture Shutdown Alarm
5.1.6. Monthly code entry required – Lease code for that month needs entered. Go to code entry
screen and enter code.
5.1.7. Pump outlet pressure high – see Diaphragm Compressor Outlet PSI High Alarm. Check to
verify that bottles are open if in recovery.
5.1.8. Separator pressure has risen – Separator pressure is higher than 500 psi, separators will be
pumped down or vented.
5.1.9. Low bottle detected at startup – Check that bottle is open and has pressure. Pressure needs
to be above 500 psi, change out if necessary.
5.1.10. Machine is in bottle change mode – change bottle and acknowledge to continue.
5.1.11. Cycle complete or terminated but vessel(s) still pressurized – System is stopped but there
is still pressure over 100 psi in one of the vessels, vent or recover vessels before opening.
5.1.12. Recovery complete – System recovered vessels down to 100 psi and vented the extractor.
Open valve ten and acknowledge the prompt to relieve pressure from the rest of the system.
5.1.13. Check/Replace Bottle – Indicates machine is in bottle change mode.
5.1.14. Extractor Pressure > 2000psi twice in ten minutes – Follow prompt and reset message.
5.1.15. Extractor Pressure not equalizing – see Extractor Not Equalizing Alarm.
5.1.16. Recovering due to low system pressure – Follow prompts and reset message
5.1.17. Recovery has begun – System has completed its cycle and is recovering CO
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5.1.18. CO2 Low bottle pressure – Change out bottle to get bottle pressure above 500 psi.
5.1.19. Transition to (BA/AB) but Ext (A/B) not ready – Close open extractor and acknowledge on
the elapsed time setting screen to continue.
5.1.20. Sep pressure test failed – Close open separator and acknowledge on the manual screen to
continue.
5.2. System Alarms
5.2.1. Air PSI High/Low Alarm – Air psi is above or below range of acceptable pressure. Decrease
air pressure or check the air compressor and increase pressure.
5.2.2. Chiller 1 Fault/Warning Alarm – Check chiller screen for alarm and consult chiller manual.
5.2.3. Chiller 2 Fault/Warning Alarm – Check chiller screen for alarm and consult chiller manual.
5.2.4. CO2 Storage PSI High/Low Alarm – CO
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storage bottles pressure is too high or low. Make
sure bottles are open and switch out if needed.
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