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APECS™ OPERATIONAL

INSTRUCTIONS

(v. 2.7)

10 July 2008

©2008 InnerSpace Systems Corp. All rights reserved. Distribution limited to

owners and users of ISC Closed Circuit Rebreathers. See paragraph “

DOCUMENT

REPRODUCTION AND LICENSING”

for specifics.

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Summary of Contents for APECS

Page 1: ...INSTRUCTIONS v 2 7 10 July 2008 2008 InnerSpace Systems Corp All rights reserved Distribution limited to owners and users of ISC Closed Circuit Rebreathers See paragraph DOCUMENT REPRODUCTION AND LICENSING for specifics ...

Page 2: ...er are called out in RED BOLD to facilitate proper warning of potentially hazardous conditions Closed Circuit Rebreathers artificially manipulate the divers breathing environment which creates the potential for injury and death if the apparatus is not properly assembled tested and calibrated Divers certified on previous releases of APECS are strongly advised to study this manual carefully and cons...

Page 3: ...isconnected or completely fail the APECS will still average and maintain the current set point Current set point window Breathing loop temp Monitors breathing loop temp that the diver is breathing Ambient water temp Set points selectable on the fly Manual mode 0 20 0 5 0 7 1 0 1 1 1 2 1 3 1 4 and ASP Bilinear 2 point calibration system For accurate high and low point PO2 information High Altitude ...

Page 4: ...d diving operation or the batteries must be replaced if they are in question on reliability Also the power switches must be turned on prior to the diving operation The extreme Maximum allowed supply voltage is 10 0 volts and minimum voltage is 5 2 under load volts See pre dive check sheet Software System Configurations The APECS 2 7 software comes in four configurations each specific for the targe...

Page 5: ...self correct if the problem is temporary if the sensor has failed or connection is broken the diver must abort the dive and exit the water as soon as possible observing both displays and being prepared to conduct an immediate action procedure IAP System Status Indicator The SSI is the heart beat of the APECS and is indicating the operational status of the electronics the heartbeat characters is vi...

Page 6: ...oint of 0 20 and attempts to maintain a loop PO2 of 20 Air at all times The desired use is for swimming pool training surface swimming while breathing on the loop to avoid hypoxia and for pre diving the Megalodon to avoid wasting oxygen through solenoid injection Set Points The diver has the following set points that may be set on the fly during the dive or preset prior to entering the water MAN 0...

Page 7: ...2v when the solenoid is not firing the LOW BATT indicator will display only while the solenoid is firing in both cases the back light is disabled and will not be available until the system power is reset If the primary battery voltage should drop below 4 5v the handset display will go blank the processor will continue to operate however the solenoid will cease firing If this occurs the diver will ...

Page 8: ...n will be ignored This options defaults to disabled anytime the system power is cycled DISPLAY POWERSAVE When enabled under normal operating conditions KEEP BACKLITE ON DISABLED the handset unit will go blank after ten minutes of inactivity no button pushes this has no effect on the CPU or solenoid operation This option is ignored if KEEP BACKLITE ON is set to ENABLE With the above three options t...

Page 9: ... to prevent the diver from creating a hazardous condition during the dive At anytime during the pre dive the diver may reset the two minute window by turning the power off and turning the power on again These menus are common to both the primary and secondary systems and will be discussed at the end of this manual Warning At no time should the diver enter the water within the two minute time frame...

Page 10: ...IGHTNESS KEEP BACKLITE ON DISPLAY POWERSAVE METRIC IMPERIAL CALIBRATE SET OXYGEN PERCENTAGE and ALITIUDE The diver may scroll through the menus and access the menu options the same way as with the primary hand set The diver will notice one difference in the SYSTEM MONITOR in that the NORM battery voltage only is displayed and not the LOAD voltage The secondary does not operate the solenoid The ope...

Page 11: ...t The dim does not save any more power as the bright in fact it uses more power The HUD is a powerful indicator to you and your buddy or student at any time the buddy instructor can see what you buddy student are breathing and the condition of each sensor by looking at the color and number of blinks The following is a brief explanation of the HUD color and number system single LED HUD Color PO2 Bl...

Page 12: ... on both handsets during high point calibration procedures to aid the diver in a proper loop flush The first point of calibration is ambient air and the second point is maximum oxygen To best perform the calibration procedure follow the pre dive check sheet and these instructions When you select the calibration menu the first screen also displays the percentage of oxygen used for the highpoint and...

Page 13: ...e electronics and is appropriately displayed on the handsets and HUD as that PO2 A low oxygen percentage results in more of the oxygen gas mix to be used up faster since the other gasses are treated as part of the diluent gas The oxygen percentage setting is only used during calibration The diver doesn t need to recalibrate for each oxygen percentage change when changing oxygen sources WARNING IF ...

Page 14: ...aximum O2 PO2 for the high point The oxygen quality percentage is used to adjust the new high point PO2 to properly represent the calibration maximum oxygen PO2 for the selected altitude zone This adjusted low and high point is displayed on the altitude menu during calibration and changes with each altitude zone selection Altitude Zone selections during sensor calibration of both the primary and s...

Page 15: ...y regardless of current altitude WARNING Prior to accomplishing the low point calibration the diver should remove the sensor carriage lid and ensure the sensors are properly aired in ambient air During the pre dive check of the Megalodon the checklist will tell you to conduct the air point calibration After turning the power on the diver will scroll through the primary and secondary handsets menu ...

Page 16: ...uum the loop again and fill again until the vent valve vents and repeat above 3 Open the vent valve all the way and tightly pinch the exhaust breathing hose to isolate the exhaust counterlung from the oxygen bypass on the inhalation counterlung 4 Push the oxygen manual bypass for 3 seconds this will blow 100 oxygen over the sensors without increasing the loop pressure giving a possible higher PO2 ...

Page 17: ...se flow restrictor into the LP Oxygen hose fitting 4 Connect female cap from the kit to the male fitting on the bottom of the head Insert hose about 3 4 into the female cap Connect other end to oxygen analyzer 5 Turn on oxygen bottle and observe the mv display on the handset and the PO2 reading on the analyzer 6 Once the mv reading has stabilized at the highest reading obtainable and the analyzer ...

Page 18: ...ty decompression solutions At present only one product has met the stringent criteria and testing for integration with the Megalodon and that is the Shearwater Pursuit Dive Computer Integration is achieved by replacing the secondary APECS 2 5 board with an Isolation board The secondary battery box powers the isolation board The Shearwater is powered by it s own internal battery The APECS primary b...

Page 19: ...___________________________________________________ Revision NEW APECS 2 7 18 of 19 Date 10 July 2008 APECS OPERATIONAL INSTRUCTIONS v 2 7 APECS 2 5 A Hardware Configuration Note On COPIS2 configurations the solenoid will not be present ...

Page 20: ..._________________________________________________________________________ Revision NEW APECS 2 7 19 of 19 Date 10 July 2008 APECS OPERATIONAL INSTRUCTIONS v 2 7 REVISION INDEX Date Revision CHANGES 10 JULY 2008 NEW ...

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