Seaward B433R - Manual (Page 14)

Operating Procedures
14
! WAR NING !
THIS INSTRUMENT GENERATES A HIGH TEST CURRENT TO CHECK THE INTEGRITY OF
THE MEASURED TEST PATH.
THIS WILL CAUSE HEATING WITHIN THE WIRING OF BOTH THIS TEST INSTRUMENT
AND THE PRODUCT UNDER TEST.
TO AVOID DAMAGE CAUSED BY EXCESSIVE HEAT BUILD UP,
DO NOT APPLY ANY TEST FOR LONGER THAN 5 SECONDS
AND DO NOT APPLY MORE THAN 2 SUCH TESTS IN ANY 1 MINUTE PERIOD.
I ns tr ument S et-U p
1. Ensure that the text prior to this point, especially with regard to safety and test duration, is fully understood
before proceeding.
2. Sight the instrument in accordance with the General Guidelines to promote ease of use and operator safety.
3. Remove the Supply and Test leads from the cable compartment and connect into their respective panel
connectors.
4. Plug the supply lead into an Earthed 230V / 50Hz socket outlet and switch ON the supply.
5. Operate the instrument’s SUPPLY switch, the integral red lamp should light.
6. Infinity adjustment – this may require the use of a small, flat bladed, screwdriver.
With nothing connected to the Test Output leads, apply the tip of the Earth Probe to an insulated service and
use a firm steady pressure to activate the test. Observe the meter pointer, which should go up-scale and sit on
the INF. mark. If it does, no adjustment is necessary. Release the probe within 5 seconds.
If the pointer goes above or below on the INF. mark, repeat the procedure and use a small screwdriver to
adjust the SET INF. control, on the panel, until the pointer does line up with the INF. mark. Release the probe.
NOTE
There should be no need to adjust the SET ZERO control, this is factory set and should not be tampered with
since this may cause calibration errors.
The instrument is now ready for product testing.