Seaward B255 - Manual (Page 21)

Operating Manual Clare B255 Power Tool & Appliance Test Station
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It is recommended that the supply sockets in workshops and especially those
used in any ‘test area’, are protected by an Earth Leakage Circuit Breaker.
Ensure that the person responsible for testing is competent and fully trained
in both the general principles of Safety Testing and the correct use of the
required test instruments, or is closely supervised by someone of the required
competence.
Never leave an appliance connected to the test set when un-attended.
Always check that the intended test is suitable for the appliance – if the Class
II (Double Insulated) symbol is not clearly visible the appliance must be
assumed to be of Class I (Earthed) construction.
Some ‘electronic’ equipment may not be constructed to withstand the high
current ‘earth bond’ or high voltage ‘flash’ tests applied by this instrument.
IF IN DOUBT refer to the appliance manufacturers recommendations or seek
qualified advice.
Instrument Wiring and Connections
Site the instrument in accordance with the General Guidance Notes, and other
recommendations elsewhere in this Manual, and to satisfy operator safety and
ease of use.
Connect the Test Output box to the rear-mounted outlet on the instrument and
site the connector box within the test area for easy access.
Wire your Guard Interlock / Safety switch circuit to the input socket on the rear
panel, using the plug top supplied – if no safety interlock is to be employed,
the plug must be fitted with a shorting link, otherwise the instrument won’t
work.
Wire your status beacon to the Beacon Port on the rear panel, again using the
mating plug top supplied. Position the beacon so that it can be clearly seen
outside the test area.
To fully test 110V products, connect the output lead from your external 240 /
110V isolating transformer into the 110V Inlet connector on the rear panel of
the instrument.
Connect the Earth Return clip lead and Flash test probe into their respective
sockets on the rear panel. It is recommended that provision is made, within
the test area, for storage of the clip and probe when not in use – rather than
just leave them thrown down on the bench top.