Checklist for Hollis PRISM2

• Conducted on

  Date

• Prepared by

Scrubber

• New Scrubber?

  Yes

  No

• Time left on Scrubber

  Date

1 Assembly Checklist Completed

2 Install Analyzed + Labeled Gas Cylinders

3 Turn On Wrist Display

• 1. Check O2 cell mV readings in air (8,5-14 mV - replace if needed) 2. Change to Setpoint 0.19 (8x Menu -Left Button)

• Cell 1

• Cell 2

• Cell 3

4. Turn On HUD - Check Battery Status

5. Negative Pressure Test (Hold for 1minute minimum)

• 1. Open DSV/BOV 2. Inhale from DSV/BOV in CC mode, exhaling through nose until counterlungs are fully collapsed 3. Close DSV/BOV 4. Allow to sit for 1 minute Watch for signs of leak

6. Oxygen System Leak Test (hold for 30 seconds minimum)

• 1. Slowly open oxygen valve, Pressurize hoses, close valve 2. Watch oxygen pressure gauge for pressure loss 3. Slowly open oxygen valve

7. Positive Pressure Test (hold for 1 minute minimum)

• 1. Close OPV 2. Fill loop fully with oxygen using manual oxygen addition valve until OPV vents 3. Allow to sit for 1 minute, watch for signs of leak 4. Open DSV/BOV, evacuate loop contents

8. Flush Loop (2 times)

• 1. Close DSV/BOV 2. Fill loop with oxygenuntil OPV vents 3. Evacuate loop fully 4. Repeat step A & B 5. Open DSV/BOV to equalize pressure to Ambient pressure. Close DSV/BOV

9. Calibrate Wrist Dispaly & HUD

• Wrist Display: 1. Menu to calibrate (2x menu - left button) 2. Press Select (right button) twice to calibrate 3. Check mV readings in O2 (40,6-66,9)

• Cell 1

• Cell 2

• Cell 3

• HUD: 1. 3 rappid presses (within 1 second) on Heads Up Display piezo power switch

10. Check Solenoid & Wrist Display Battery

• 1. Setpoint to high ( > 1.1 ) 2. Solenoid fires O2 injection verified 3. Change Setpoint to .19 4. Solenoid and wrist display battery check (Acceptable Ext. >7v / Int. >3,18v) (6x Select - Right button)

• Solenoid Ext. V

• Wrist Display Int. V

11. Install Cover

12. Diluent System Leak Test (hold for 30 seconds minimum)

• 1. Slowly open diluent valve, Pressurize hoses, close valve 2. Watch diluent pressure gauge for pressure loss 3. Slowly open oxygen valve

13. Check AVD, BOV if equipped, and BCD

• 1. Inhale from onboard alternative air source if supplied 2. Open DSV/BOV, inhale from loop untill ADV engages, Dropping loop PO2 3. BCD inflation + deflation mechanism / air holding

14. Pre-Breathe (7 minutes)

• 1. Change wrist display to low setpoint 2. Block nose and begin breathing from the PRISM2 (in a safe location) 3. Observe setpoint maintenance

15. Weigts, valves open?, Setpoint and loop contents, HUD and Wrist display On?