Seaward 300 PrimeTest - Manual (Page 87)

PrimeTest 300 Operating Instructions
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16.5 Battery Replacement
Over a period of time, (typically 1 to 2 years), the
batteries will loose their ability to hold charge. (E.g.
Even when fully charged, they go flat very quickly when
you start using the tester). In this case you will need to
replace the batteries, using the procedure described
here.
Warning: Always ensure that the PrimeTest
300 is disconnected from all voltage sources
before maintenance work is carried out.
- Power the unit off using the red OFF button, ref
fig. 1 (3)
- Disconnect the black test lead from the unit
- Disconnect cable, from the mains inlet socket,
ref fig. 2 (8).
- Disconnect the EUT mains cable, from the EUT
socket, ref fig. 1 (6).
- Position the PrimeTest 300 face down and
release the captive screw in the battery
compartment cover.
- Remove the battery compartment cover.
- Remove the old batteries from the compartment.
- Insert the new set of batteries into the battery
compartment ensuring that the battery polarity
matches the marking on the inside of the battery
compartment.
- Relocate the battery cover over the battery
compartment and fasten in position with the
battery cover captive screw.
This unit will contain Nickel Metal Hydride
(NiMH) batteries. Do not dispose of these
batteries
with other solid waste. Used
batteries should be disposed of by a qualified
recycler or hazardous materials handler.
16.6 Replacing All Fuses.
If, during one of the powered tests, a message appears
stating that incoming mains is missing it is possible that
one of the fuses has blown. All fuses should be checked