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F11 OPERATING MANUAL
© 2002 Design, 2013 Doc. No. 12-7285-r01 (5/3/13)
Battery Removal
• There is no need to remove the straps.
• Remove the (4) retaining screws located on the back of the case (Fig. 79) by turning them counter clockwise with a small flat tip
3mm screw driver.
• Carefully separate the front and back sections. If necessary, insert a small flat tip screw driver in the slot machined into the
cover at the 11 o'clock position (Fig. 80a) and gently pry the cover loose, then lift it off the case (Fig. 81).
• Turn the case to one side to drop the battery into your hand. If necessary, gently loosen it with the tip of your finger (Fig. 82).
DO NOT use tools to pry it out, or short the positive (+) top of the battery to the negative ( - ) contact under it.
• Discard the battery according to local regulations governing disposal of Lithium batteries.
Inspection
• Closely check all of the sealing surfaces for any signs of damage that might impair proper sealing.
• Inspect the buttons, lens, and housing to ensure they are not cracked or damaged.
WARNING: If damage or corrosion is found, return your F11 to an Authorized AERIS Dealer, and DO
NOT attempt to use it until it has received factory prescribed service.
• Remove the cover o-ring by squeezing the sides (Fig. 83a). Discard, and do not attempt to reuse it.
> It is located around the top rim of the cover.
> DO NOT use tools to remove the o-ring.
> To ensure proper sealing, o-ring replacement is required each time the battery is replaced.
Battery Installation
• Very lightly lubricate the new o-ring with silicone grease and place it on the top rim of the cover.
• Place a new 3 volt type CR2450 Lithium Battery, negative side down into the battery cavity (Fig. 84) and ensure that it is
evenly positioned.
• Carefully position the battery cover over the battery compartment. Use the F11 logo as a guide for top/bottom. Also, small
symbols have been engraved on the top of the cover and strap to serve as a guide for proper alignment (Fig. 85a).
• While ensuring that the cover and back of the case are properly aligned, firmly press them evenly and completely together.
• While holding the battery cover firmly in position against the back of the case (Fig. 86), insert the (4) retaining screws and
tighten them until secure by turning them clockwise with a small flat tip 3mm screw driver. DO NOT over tighten.
Testing
> Activate the unit and ensure that the LCD is clear and sharp in contrast. If any portions are missing or appear dim, or if a Low
Battery condition is indicated, return the F11 to an Authorized AERIS Dealer for evaluation before use.
> Verify all set points prior to diving.
------------------------------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------------------------------
ALTITUDE SENSING AND ADJUSTMENT
Prior to the first dive of a series of repetitive dives, Altitude (i.e., ambient pressure) is measured upon activation of Free Surface
Mode and every 15 minutes until a dive is made or operation reverts to Main Time after 2 hours.
> While it is operating in Watch Modes after a dive, measurements are taken every 15 minutes during the 24 hour period after
surfacing.
> Measurements are only taken when the unit is dry.
> Two readings are taken, the second reading 5 seconds after the first. The readings must be within 1 foot (30 cm) of each other
to record that ambient pressure as the current Altitude.
When diving in high altitude waters from 3,001 to 14,000 feet (916 to 4,270 meters), the F11 automatically adjusts to these
conditions providing corrected Depth indication at intervals of 1,000 feet (305 meters).
No adjustments are made during any time that the Wet Contacts are bridged.
The F11 will not function as a Dive Gauge above 14,000 feet (4,270 meters).
Fig. 83 - SQUEEZING
COVER O-RING
Fig. 84 - INSTALLING
BATTERY
a
Fig. 85 - BATTERY COVER
ALIGNMENT
Fig. 86 - PRESSING FRONT
& BACK TOGETHER
a
Fig. 79 - CASE BACK
Fig. 81 - LIFTING
BATTERY COVER OFF
Fig. 82 - BATTERY
REMOVAL
Fig. 80 - TO LOOSEN
BATTERY COVER
a
31


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