Internal Inspection - mcmurdo C1 S-VDR Service Manual

3.4 Internal inspection

Internal inspection is important both for diagnosing faults and for detecting possible
faults early. Internal inspection is required under the following conditions:
• A fault has been observed and needs to be diagnosed
• If there is any indication of water inside the FFC
• Any salt deposit or corrosion is visible inside
• Signs of any cracking of the plastic parts
• Any time the FFC is opened for other reasons
Sections 3.5 and 3.6 detail how to disassemble the EPIRB and then re-assemble it.
These sections should be followed, but using the notes below as guidance on what to
look for during the disassembly process.
Prior to opening EPIRB
• Carry out inspection as per section 3.1
With dome and gasket removed
• If there is a pungent smell, then suspect that the Lithium battery pack has leaked.
See section 1.4 for advice. Wear rubber gloves. Damaged lithium batteries may
be unstable and pose a serious safety hazard. Leakage usually damages circuit
boards, so it is often necessary to scrap the EPIRB without further investigation.
• Check top of circuit board for white salt deposits, dull grey corrosion or wetness.
If any corrosion is evident the FFC should be completely disassembled.
• Check plastic parts, especially screw positions, for signs of cracking and for
possible leakage paths.
C1 S-VDR service manual Issue 1 Page 14