• Prism Dive Number

  • Location
  • Conducted on

  • Diver

  • Buddy

1. Fill scrubber basket with CO2 absorbent + store in airtight container.

  • Label Container: Date Packed, Grade, Time Used, Time Left, User

  • Date Packed

  • Grade

  • Time Used

  • Time Left

  • User

2. Fill O2 & Diluent cylinders, analyze contents, label cylinders with name, date, contents.

  • psi/bar Dil Contents

  • Pressure

  • psi/bar MOD

  • O2%

  • Pressure

3. Install Regulators + Hoses on H-Plate

  • A. O2 system on right (head facing up) - run all lines under bottom tank strap.

4. Install Head Assembly Onto H-plate

  • A. 4 nylon allen screws

  • B. Run O2 solenoid line between right side<br>head mount, flange & H-plate. Tighten hose<br>to solenoid.

5. Install BCD, Yoke + Backplate Onto H-plate

  • A. Long screw on top, short screw on bottom -<br>secure with nylon keepers.<br>

  • B. Install BCD on plate - inflator facing H-Plate.

  • C. Install yoke harness - Fastex clips facing BCD.

  • D. Install backplate and harness – place on<br>washers and tighten butterfly nuts.

6. Attach Counterlungs To Yoke

  • A. Insure inhale counterlung is on right side<br>(with bladder & yoke face-up).

  • B. Clip Fastex buckles in place

  • C. Line-up Velcro parts and compress

7. Install Counterlung Breathing Hoses To Head

  • A. Clean and lubricate O-rings, O-ring grooves<br>and mating surfaces.

  • B. Install hose nuts finger tight. Do not over-tighten.

8. Attach Gas Supply Lines To Diluent + Oxygen Addition Valves On Counterlungs + BCD Inflator

  • A. Attach all 3 QD fittings. Pull on hoses to make<br>sure they are secure.

9. Assemble DSV/BOV + Hoses, Check + Install

  • A. Open/close, purge, mouthpiece

  • B. Check mushroom valve seals and flow direction

  • C. Install hoses onto DSV/BOV

  • D. Perform a mushroom valve sealing test<br>(stereo check)

  • E. Install DSV/BOV onto counterlungs<br>paying attention to flow direction arrow

  • F. Install LED Heads Up Display holder fix/attach<br>cable to breathing hose

10. Clean Head To Bucket Sealing Rings, O-Ring Grooves + Lube O-Rings

  • A. Remove O-rings per manual instructions, clean +<br>replace if needed.

11. Clean Red CO2 Seal + Secure In Place

  • B. Make sure the red CO2 seal is firmly seated in its<br>groove (triple check!)

  • A. Make sure there is no debris, dust or lubricant.<br>Clean seal groove.

12. Check Filled CO2 Scrubber Basket

  • A. Basket top secure

  • B. Check for settling and firmness of absorbent bed

13. Check Scrubber Bucket

  • A. Ensure bucket sealing surface is clean

  • B. Basket compression spring installed + functional

  • C. Install bucket moisture pads

  • D. Make sure the pad is not resting on or interfering<br>with the basket compression spring

14. Place CO2 Basket In Bucket, Confirm Center Tube Opening Up, Mount + Seal Bucket To Head (record usage time on operational checklist)

  • 14. Place CO2 Basket In Bucket, Confirm Center<br>Tube Opening Up, Mount + Seal Bucket<br>To Head (record usage time on operational<br>checklist)

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