4.5 Maintenance, storage and transport
After each dive, the subsea canister should be inspected for scratches in the anodising and pitting
corrosion (ref chapter 4.3). Severe scratches in the aluminium, especially near connectors or
other materials, may lead to local pitting corrosion, and should be coated with Alodine
Anodizing touchup pen, or similar (Not applicable for titanium).
If pitting corrosion is found near seal surfaces, the unit must be inspected for seal integrity
prior to diving. Contact Innova or the local Innova representative for service.
Prior to storage, the following should be performed:
1. Disconnect all cables.
2. Clean the system with fresh water.
3. Dry off with a clean cloth or compressed air.
4. Maintain cable and connectors according to section 4.4 above.
Transportation and storage should be done in the supplied Pelicase
Before use after storage, or if the subsea unit has been opened, a vacuum test should be
performed to ensure that the O-rings seal properly. Follow these instructions:
1. Connect a vacum-pump with manometer and a valve to the Swagelok fitting.
2. Evacuate air from the housing until the pressure in the housing is approximate -0.5 bar.
3. Close the valve andnote the exact pressure.
4. Stop the pump.
5. Leave the housing for one hour.
6. Verify that the reading from the manometer is unchanged.
If the pressure drops, open the housing and check and clean all O-rings and O-ring surfaces.
Lubricate O-rings with Molykote 111 or similar. Repeat the vacuum test.
CAUTION: Do not power on the Matrix bottle when under vacuum.
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