
O2ptima Manual –User Guide – Rev 1.2 Page 16 of 26
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Asseer & Associates, 5609 Power Road, Ottawa, Ontario, K1G 3N4
3. Maintenance
To ensure many years of trouble free diving, it is critical that proper maintenance be
performed on the O2ptima. Lack of maintenance can affect the proper functionality of the
unit and will void any warranty.
3.1. Cleaning / Disinfecting
All components which come into contact with the divers breathing loop must be routinely
cleaned and disinfected (recommend Virkon be used as cleaning agent). Ensure that the
disinfectant is rinsed out of the loop prior to using it. Improper cleaning can result in
growth of mould which can affect the proper operation of certain components.
• Remove front section of the breathing hose and clean with disinfectant. Hang this
section vertically with the inhalation side at the top so that any residual disinfectant
will drain through the one way mushroom valves.
• Disconnect the hose from the canister. Partially fill the lungs with disinfectant and
swish around. Drain the disinfectant through the lower purge valve or T-Piece and
hang to dry.
• Clean rear breathing hoses by spraying disinfectant through the hose and hang to
dry.
• Disassemble the canister. Remove the water trap on the input head. Spray
disinfectant and wipe dry with clean cloth.
• Remove canister center body. Spray disinfectant and wipe dry with clean cloth.
• Clean the top of the O2 sensor disk by spraying a cloth and wiping clean the upper
surface. Do not spray the top of the O2 sensors directly.
Note: The bottom of the head should be cleaned every 6-10 hours of diving or anytime
flooding has occurred and residue is seen during inspection. To clean bottom of the head,
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