Seaward 300 PrimeTest - Manual (Page 85)

PrimeTest 300 Operating Instructions
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16.0 Maintenance
Warning: Always ensure that the PrimeTest
300 is disconnected from all voltage sources
before maintenance work is carried out.
16.1 Preparing to work on the PrimeTest 300.
Make the PrimeTest 300 as voltage free as follows,
before opening the instrument;
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).
16.2 Securing the PrimeTest 300
Under certain conditions safe operation of the PrimeTest
300 can no longer be assumed:
Visible damage of the instrument case.
Incorrect measurement results.
Recognisable abuse to the instrument due to prolonged
storage under improper conditions.
Recognisable abuse to the instrument due to
extraordinary transportation stress.
In these cases, the PrimeTest 300 should be
immediately switched off, disconnected from any test or
measurement function and secured to prevent any
further use.