Assembling the O2ptima CM
Importance of Checklists
Many rebreather accidents and fatalities could have been prevented with the use of assembly and pre-dive checklists. There is nothing particularly difficult about assembling a rebreather, however there are many…
Gas Analyzation
The most important rule of rebreather diving is to always know what gas is in the breathing loop. This process begins with analyzing the contents of your cylinders.Sensor calibration is…
Installing the Water Trap Tubes
Begin by installing the water trap tubes into the counterlungs. Lay the outerbag with the back side facing up. One end of each tube is slightly flared to prevent it…
How to Install a Micropore ExtendAir Cartridge
The next step in the build process is to assemble and install the CO2 scrubber canister. The O2pitma can be used with either the Micropore ExtendAir cartridge or it can…
How to Pack the Scrubber
The scrubber canister can be packed with approximately 5 pounds of loose granular CO2 absorbent.Dive Rite recommends Intersorb 812 or Sofnolime 797 (8-12 mesh) granular absorbent. 408 (4-8 mesh) is…
Installing the Scrubber End Cap & Water Trap
Check that the orange electronics head O-rings and flat seal are clean and lubricated. Dive Rite recommends lubricating these seals with Tribolube 71 grease.Confirm that the small orange O-ring is…
Installing the Electronics Head
Check that the orange electronics head O-rings and flat seal are clean and lubricated. Dive Rite recommends lubricating these seals with Tribolube 71 grease.Confirm that the small orange O-ring is…
Installing the Scrubber Assembly
With the ExtendAir cartridge installed or the scrubber packed, the next step is to install the canister onto the bottom of the counterlungs. It should be oriented with the electronics…
Mounting the Electronics/Battery Canisters
The electronics/battery canisters are mounted in elastic sleeves located on the bottom side of the outerbag in between the counterlungs and the scrubber canister. Carefully route the cables so that…
Installing the Loop Hoses
There are two hoses that connect the DSV to the counterlungs to complete the breathing loop. Each hose has counterlung fittings attached to the end.Before installing the hoses, lightly lubricate…
Installing the DSV
Prior to installing the DSV it is recommended to visually inspect the mushroom valves on both sides of the unit. Ensure that there is no debris or excess lubrication on…
Installing the Oxygen Cylinder, Regulator and Hoses
Install the first stage onto the cylinder oriented as shown in figure 27.Clip the scrubber canister cover clips together and tighten the straps to snug the cover around the scrubber.…