User's Manual

11.3 Battery replacement

The G4 uses a 9V Lithium battery pack, McMurdo type 82-570. Typically this will have

to be replaced every 5 years. The exact battery expiry date is marked on the rear of the

G4 lens dome and if you have a full enclosure it is also marked on the outside of the

enclosure. The battery expiry date should be checked regularly. You will need to

replace the battery when:

• The expiry date has been reached

• The G4 has been used in an emergency situation

• A false activation exceeds 2 hours of use.

The battery is a one shot device. It is not rechargeable or user replaceable. Battery

replacement

must

be carried out by a McMurdo approved service agent. Lithium

batteries have special disposal requirements. Never incinerate a Lithium battery. Never

dispose of one at sea. Your service agent will deal with battery disposal.

11.4 Servicing

All servicing must be carried out by a McMurdo approved service agent. Always call

your nearest agent and talk to their service department before returning suspect

equipment. You can find your nearest service agent from:

• The McMurdo web site: http://www.mcmurdo.co.uk

• Contacting McMurdo direct (see warranty page).

• Contacting a McMurdo distributor

11.5 Transportation

The G4 has no special transportation requirements. Its Lithium battery has been tested

under the “Transportation of Dangerous Goods” regulations and has been declared as

non-hazardous for transportation purposes.

11.6 GMDSS inspections

If your vessel is subject to GMDSS regulations then you can expect to get regular visits

from ship surveyors enforcing national legislation. They will check the expiry dates and

activate the EPIRB to prove that it really works and they will read the identity message

stored inside the EPIRB to check that you have registered it properly. Leisure vessels

are not subject to these inspections. However, in some countries passenger and

fishing vessels are covered by the legislation.