Seaward B255 - Manual (Page 22)

Operating Manual Clare B255 Power Tool & Appliance Test Station
18
Instrument Set-Up
Ensure that the rotary Test Selector switch is set to either STANDBY position.
Connect the supply lead into the Supply socket on the back of the instrument
and connect to an Earthed, 230V 50Hz, supply outlet. It is recommended that
the outlet to be used is protected with an Earth Leakage Circuit Breaker.
Switch on the instrument by firmly depressing the green button on the front
mounted SUPPLY switch, the green button will light and, if the status beacon
is connected, the green beacon lamp will also light to warn that the test set is
powered up.
The following set-up procedure may need the use of a small, flat bladed,
screwdriver.
Ensure that the green Earth Return clip lead is isolated (not clipped to
anything) and set the rotary Test Selector to EARTH TEST.
Close the Guard switch, the red beacon light will come on to warn that a test
is about to be applied.
Depress the white PRESS TO TEST button and watch the pointer on the panel
meter. It should move up scale (to the right) and come to rest on the INF. mark
- if it does, no adjustment is necessary. Release the test button.
If the meter pointer doesn’t reach the INF. mark, keep the test button
depressed and use a small, flat-bladed, screwdriver to adjust the SET INF.
control (see FIG.1 Item 2 on page 20) until the pointer is correctly set. Release
the test button.
Reset the test selector to the STANDBY position.
The test set is now ready for test application.
Ensure the B255 is positioned so that the mains supply lead
can be easily disconnected from the mains supply.