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9
MIC COVER
2. MAINTENANCE
Periodic checks and maintenance are important for proper operation of any electronic systems.
This chapter contains maintenance instructions to be followed to obtain optimum performance
and the longest possible life of the equipment. Any maintenance must be executed by a suitably
qualified technician.
WARNING
ELECTRICAL SHOCK HAZARD
Do not open the equipment.
Only qualified personnel
should work inside the
equipment.
Do not disassemble or modify the
equipment.
Fire, electrical shock or serious injury can
result.
2.1 Annual Recertification
The VDR must undergo an annual performance test to recertify suitability. This test is conducted
by a test engineer authorized by the manufacturer and certified by a relevant ship classification
society, the content and procedure of the test in accordance with the regulations of that society.
For further details about the VDR performance test, contact your ship classification society.
2.2 Cleaning
Dirt or dust may be removed from units with a soft cloth.
Fresh water-moistened cloth may be used to remove
stubborn dirt. DO NOT use any commercial cleaning
agents to clean any unit. They can remove paint and
markings. This is especially important with the
Waterproof Microphone VR-3012W. The watertight
integrity of the microphone will be compromised if any
commercial cleaning agent contacts the ventilation
sheet behind the MIC cover.
Waterproof microphone VR-3012W (bulkhead type)