Canon EOS 5D Mark II Instruction Manual - Page 25

Housing Maintenance Your Ikelite Housing should be given the same care and attention as your other photographic equipment. In addition to normal maintenance, we recommend your housing be returned to Ikelite (every 2-3 years or 50 dives), to be checked and pressure tested. - Do Not leave the camera and housing in direct sunlight for prolonged periods. Heat may damage the camera. - Do Not ship the camera in the housing. - Before using the housing, always check the tightness of the set screw in each control knob. Check each control gland penetrating the housing to make sure they are tight. There is a slight chance that either could vibrate loose during travel. - Keep the back and port o-ring clean and lightly lubricated. To lubricate, remove the o-ring from the back. Put a small amount of lkelite lubricant on your fingers. Pull the o-ring through your fingers to apply a light coating of lubricant. Only apply enough lubricant to make the o-ring feel slick. Do Not stretch the o-ring. This light coating of lubricant will help to keep the o-ring from drying out and will help to show a dark sealing line when the housing back is properly sealed. - Keep the area where the o-ring fits and the sealing surface clean. - Rinse the housing exterior thoroughly in freshwater after each saltwater use. Depress push buttons several times during rinse. Dry with a soft cloth. Dry port to eliminate water spotting. After several uses in salt water, soak the housing in a mild soap solution, rinse, and dry. - Although not recommended, if it is necessary to remove a housing push button, Do Not re-use the E-clip. Contact Ikelite for replacement E-clips (part #0319.12). CAUTION: Never use spray lubricants as the propellant ingredient can cause the plastic housing to crack. Use only Ikelite lubricant. 25