Airmar Acoustic Deterrent System—dB Plus II™ - Manual (Page 9)

7
Safety
Always comply with the safety precautions. The following warnings are posted on the front panel of the
transmitter.
DANGER: Temporary or permanent hearing loss may result from
underwater exposure to high intensity sound generated by this
equipment. This transmitter’s “ON-OFF” switch must be locked in
the “OFF” position whenever a person is underwater and within
150 meters (500') of a transducer.
NOTICE TO DIVERS: This transmitter’s “ON-OFF” switch must
be locked in the “OFF” position and the diver’s safety cover put in
place over the transmitter box before entering the water. If the
system is switched on accidentally, immediately surface at the
normal ascent rate.
Troubleshooting Problems
WARNING: Always lock the system in the “OFF” position before troubleshooting to avoid electrical shock
and damage to the projector(s).
Transmitter Inoperative
• Check the power supply voltage; batteries must be charged to at least 20V. Recharge the
batteries.
• Check battery terminals for corrosion. Clean the terminals if necessary.
• Check for loose or corroded power cable ends at the batteries. Clean or tighten the cable ends.
• Check for a blown transmitter fuse. Replace the blown fuse with a new 8A fuse (see Figure 4).
• Check for a loose or disconnected power cable connector. Secure the connector.
WARNING: Under no circumstances should unauthorized personnel remove the transmitter cover. Doing
so may result in electrical shock. Unauthorized removal of the transmitter cover breaks the factory seal and
voids the warranty.
Projector(s) Not Pulsing
• Check for loose or disconnected projector connectors. Secure the connector.
• Check the inoperative projector(s) cable(s) for cuts or kinks. Have damaged cable(s) repaired by a
factory trained technician or use the Airmar Splice Kit #33-045.
Reduced Sound Output.
• Check the power supply voltage; batteries must be charged to at least 20V. Recharge the
batteries.
• Check each projector for fouling. Clean the projector’s acoustic window (see Maintenance,
page 6).
• Check for underwater obstructions that might be blocking the projector(s). Remove the
obstructions or reposition the projector(s).