InspirationInspiration flash cards

Remember that your unit AVERAGES the two closest cells. Any deviation outside (above or below) .15 of the average will cause an alarm or CELL WARNING.

The following cards first depict a plain handset. Sometimes a notation of additional info is included. The card following with analysis and corrective action in yellow will have a slide “b” designation.

Working these slides should help you to build intuitiveness into handset issue recognition.

By Jeff JohnsonJeff Johnson

Master 1.3

1.30 1.29 1.31

1

Master 1.3

1.30 1.29 1.31

Normal Operations

1b

CELL WARNING

1.30 1.12 1.31

(SETPOINT 1.3)

2

CELL WARNING

1.30 1.12 1.31

(SETPOINT 1.3)

2b

•CELLS 1 & 3 POSS STUCKCells 1 & 3 average: 1.305 -.15 = 1.15•CELL 2 PROBABLY ACCURATE•PERFORM DILLUENT FLUSH•CHECK FOR SENSOR MOVEMENT

CELL WARNING

1.28 1.29 1.62

(SETPOINT 1.3)

BECOMING POSITIVELY BOUYANT

3

CELL WARNING 1.28 1.29 1.62

(SETPOINT 1.3)

BECOMING POSITIVELY BOUYANT

3b

•PROBABLE HYPEROXIA •CELLS 1 & 2 PROBABLY STUCKCELL AVG: 1.285 + .15 = 1.43•GO TO O.C. FOR SANITY CHECK•GO BACK TO REBREATHER•DILUENT FLUSH•CHECK PO2•REPEAT UNTIL PROPER PO2 OBTANINED•IF PO2 REMAINS HIGH; BAILOUT

CELL WARNING 1.18 1.35 1.20

(SETPOINT 1.2)

BECOMING BOUYANT?

4

CELL WARNING 1.18 1.35 1.20

(SETPOINT 1.2)

BECOMING BOUYANT?

4b

•CELLS 1 & 3 PROBABLY STUCK•CELL AVG: 1.195 = .15 = 1.345•PERFORM DILUENT FLUSH•CHECK PO2•REPEAT IF INDICATEDPERFORM BAILOUT PRIOR TO MIX BECOMING HYPEROXIC

CELL WARNING .79 .78 .84

SETPOINT .70

BOUYANCY DOES NOT SEEM TO BE CHANGING

5

CELL WARNING .79 .78 .84

SETPOINT .70

BOUYANCY DOES NOT SEEM TO BE CHANGING

5b

CELL AVG: .785 - .15 = .835•EITHER STUCK OPEN SOLENOID•PERFORM DILUENT FLUSHOR•DID YOU JUST ASCENDED 50 ft?AND SWITCHED FROM HI TO LOW SETPOINT•MONITOR PO2•MONITOR OR ADD SMALL AMT OF DIL•CONTINUE TO MONITOR PO2 CLOSELY

HIGH OXYGEN1.61 1.65 1.63

(SETPOINT 1.6)

6

HIGH OXYGEN1.61 1.65 1.63

(SETPOINT 1.6)

6b

•EITHER STUCK OPEN SOLENOID OR DESCENDING•SHOULD NOT BE DESCENDING ON 1.6 SETPOINTDO NOT DESCEND!!•SWITCH TO O.C.•2 BREATHS•SWITCH BACK TO CC•PERFORM DILUENT FLUSH•CHECK PO2•REPEAT •BAILOUT IF UNRESOLVED

LOW OXYGEN .39 .39 .38

(SETPOINT .70)

7

LOW OXYGEN .39 .39 .38

(SETPOINT .70)

7b

•STUCK CLOSED SOLENOID OR CLOSED O2 VALVE•SWITCH TO OC, CHECK DISPLAYS, 2 BREATHS OC•RETURN TO CCPERFORM DILUENT FLUSH•CHECK PO2•CHECK O2 TANK VALVE & PRESSURE•IF CLOSED OPEN AND USE ADDITION O2 VALVE•MONITOR PO2•CONTINUE TO USE CC IF APPROPRIATE OR BAILOUTDO NOT ASCEND ON LOOP FROM 90 FT ON .39 /3.72 = .10

CELL WARNING 1.30 1.28 1.49

(SETPOINT 1.3)

8

CELL WARNING 1.32 1.30 1.49

(SETPOINT 1.3)

8b

•EITHER STUCK OPEN SOLENOIDOR DESCENDING•SHOULD NOT BE DESCENDING ON 1.3 SETPOINTDO NOT DESCEND!!•SWITCH TO O.C.•2 BREATHS•SWITCH BACK TO CC•PERFORM DILUENT FLUSH•CHECK PO2•REPEAT IF INDICATED•BAILOUT IF UNRESOLVED

MASTER 1.3 1.24 1.25 1.28

BECOMING NEGATIVE AND HAVE MAINTAINED DEPTH.

9

MASTER 1.3• 1.24 1.25 1.28

BECOMING NEGATIVE AND HAVE MAINTAINED DEPTH.

9b

•VALVE ON O2 TANK CLOSED OR•SOLENOID STUCK CLOSED•CHECK O2 PRESSURE GUAGE•CHECK O2 VALVE•IF CLOSED OPEN AND MONITOR•MAY NEED TO USE MANUAL ADDITION BUTTON•BE PREPARED FOR / CONSIDER BAILOUT

CELL WARNING 1.30 1.29 1.45

SETPOINT 1.3

10

BOUYANCY CHANGING?

CELL WARNING 1.30 1.29 1.45

SETPOINT 1.3

10b

BOUYANCY CHANGING? CELLS 1 & 2 PROBABLY STUCK CELL AVG: 1.29 + .15 = 1.44 PERFORM DILUENT FLUSH CHECK PO2 REPEAT IF INDICATED CHECK PO2 MAY USE O2 VALVE TO LIMIT O2 BAILOUT PRIOR TO HYPEROXIC MIX

IF NOT RESOLVED

MASTER 1.3 1.32 1.35 1.44

11

ARE YOU BECOMING POSITIVE?OR NEGATIVE?

MASTER 1.3 1.32 1.35 1.44

11b

ARE YOU BECOMING POSITIVE?OR NEGATIVE?

•DID YOU DESCEND SEVERAL FEET?You would become more negative.More positive buoyancy would be O2 addition.•PERFORM DILUENT FLUSH•MONITOR FOR CELL MOVEMENT•REPEAT DIL. FLUSH AS INDICATEDPERFORM BAILOUT PRIOR TO HYPEROXIC MIX.•May need to shutdown O2 valve to remain neutral.

HIGH OXYGEN

1.58 1.62 1.61

(SETPOINT 1.3)

12

HIGH OXYGEN• 1.58 1.62 1.61

(SETPOINT 1.3)

12b

PROBABLE HYPEROXIC MIXSTOP: DO NOT DESCENDCELL AVG: 1.615 •GO TO O.C. FOR SANITY CHECK•GO BACK TO REBREATHER•PERFORM DILUENT FLUSH•CHECK PO2•REPEAT UNTIL PROPER PO2 OBTAINEDIF PO2 REMAINS HIGH; BAILOUT

Both handsets turned off at Depth

13

Both handsets turned off at Depth

13b

•Turn handsets back on•DO NOT SELECT CALIBRATE•Check unit readouts

Low Battery Warning on Primary

14

Low Battery Warning on Primary

14b

•Turn off Master•Check that secondary has become Master•Restart Primary which should now be slaveThe primary handset and battery drives the solenoidSwitching should give you additional time to terminate dive.

Master 1.3

.60 .70 .65

You have just completed a diluent flush @ aprox. 60ft.Which sensors are reasonably accurate?What could be the problem ?How best do attempt to resolve this problem?

15

Master 1.3 .60 .70 .65

You have just completed a diluent flush @ aprox. 60ft.1. Which sensors are reasonably accurate?2. What could be the problem ?3. How best do attempt to resolve this problem?

15b

1. Sensor 1 closest to accurate, 3 is next closestAs long as the gas was analyzed and sensors correctly calibrated 2. probable water condensation on sensor faces.3. Diluent flush should help dry the sensor facesManual inject should keep condensation due to gas addition away from sensor faces.

If you are utilizing Air as diluentWhat should sensor readout be

when you perform a diluent flush @ apox. 100ft ?

16

If you are utilizing Air as diluentWhat should sensor readout be

when you perform a diluent flush @ apox. 100ft ?

16b

(99 / 33) + 1 = 4 ata4 x .21 = .84Be prepared to calculate PO2 of diluent for at least each atmosphere.

You are at 120 fw and perform a diluent flush (diluent is .21)

1.02 1.05 .97

Which sensor is most accurate?

17

You are at 120 fw and perform a diluent flush (diluent is .21)

1.02 1.05 .97

Which sensor is most accurate?

17b

130 ft would be 5 ata5 x .21 = 1.05So # 2 and #3 are more accurate.