mcmurdo E3 Owner's Manual page 21

9.7 Fully disabling an E3
In the unlikely event that your E3 refuses to turn off then it may have a fault.
Procedures for dealing with a faulty E3 are covered in section 5 on false alarms and
in simple terms you should do the following...
• De-activate the EPIRB as per section 5.2
• Suppress its signal by wrapping the E3 in metal foil as per section 5.3
• Leave for 3 days until the battery is used up.
We do not recommend any other course of action. However, if it is absolutely
necessary to fully disable an E3 (by unplugging its battery) proceed as follows. This
is a dangerous task and should only be performed by a qualified technician.
Proceed at your own risk, no liability accepted
• Take the E3 below decks into the dry.
• Locate a flat bladed screwdriver with a long reach.
• Unscrew and retain the front 4 sealing screws.
• Pull the lanyard out and remove the 2 hidden rear screws.
• Do not as yet remove the sea contact screws.
• Lift the lens dome off. Remove and retain the grey gasket.
• Avoid touching the circuit board and the glass strobe tube.
• Hold the hexagon shaped pillars and remove the sea screws.
• Use a cross-headed screwdriver to remove the front screw.
• Grip the white plastic coil former and lift the circuit board up 3cm (1").
• Using fingers, unplug the white 4-way battery connector.
• The flashing will now cease.
• Collect up all the parts and return them to your nearest service agent.
Pull up on
coil former
Hex
pillar
Sea
screws
Hidden
screws
WARNING
Risk of electric shock
DANGER - HIGH VOLTAGE
Strobe
Battery
Circuit
connector
board
19
270V dc
Lens dome
Front screw
Gasket
Front
sealing
screws