PrimeTest 350
Operating Instructions
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17.6 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 and replaced where necessary.
There are 3 fuses, one in the mains plug and 2 internal
fuses. The mains plug fuse is replaced in the same
way any plug top fuse is replaced. The internal fuses
should be replaced as follows:
Warning: Always ensure that the PrimeTest
350 is disconnected from all voltage sources
before maintenance work is carried out.
Attention: Replacement fuses must be in
accordance with the specified type, rating
and size as stated on the battery
compartment cover on the rear of the
PrimeTest 350.
Power the unit off using the red OFF button, ref fig. 1
(3).
Disconnect the black test lead from the unit.
Disconnect the Seaward mains cable, from the mains
inlet socket, ref fig. 2 (7).
Disconnect the IEC mains cable, from the IEC socket
ref fig 2 (8).
Disconnect the EUT mains cable, from the EUT socket,
ref fig. 1 (6).
Position the PrimeTest 350 face down and release the
captive screw in the battery compartment cover.
Remove the battery compartment cover.
Lift one end of the fuse out of the fuse holder with the
help of a flat bladed screwdriver.
