Seaward SafeCheck 8 - Manual (Page 37)

Temperature monitoring
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These messages mean that the EUT is switched off or the fuse may
be open circuit, or it may be possible that the EUT will draw more
than 20A and could damage the Tester. User discretion is required,
but if in doubt abort the test and seek advice.
Temperature monitoring
The tester is provided with internal temperature monitors to ensure
sensitive components are not overheated. High rates of testing may
lead to this situation, especially with long duration Earth Bond tests.
Setting Earth Bond test duration to 2 secs will increase operating
time. If the following message appears, leave the tester to cool
down before pressing Enter to continue testing.
Multiple Earth Connections:
In general, multiple Earth connections to a EUT (e.g. water pipe
connections to a water heater) can cause difficulties in
measurement. This has previously needed the additional Earth
connections to be isolated.
The Safe Check 8 tester is capable of testing Earth connections in
the presence of additional Earth paths. This is done automatically by
performing a point-to-point measurement of the Earth connection,
and measurement of the differential leakage current, rather than the
Earth lead current. Measurements are thus assured without special
precautions.
WARNING
THE TEST HAS BEEN ABORTED BECAUSE THE
APPLIANCE TESTER BECAME TOO HOT. ALLOW
THE UNIT TO COOL BEFORE STARTING PRESS
ENTER BUTTON TO CONTINUE