
To ensure your PD240 Proving Unit is functioning correctly before testing, follow these steps: First, visually inspect the unit for any damage like cracks or moisture, and ensure the cover is secure. Next, check the battery levels and replace them if needed. The PD240 Proving Unit uses two 1.5V LR03/AAA batteries and one 6LR61 (MN1604, PP3) 9V alkaline battery. To test the power indicator, insert your test probes into the appropriate terminals; the green LED should light up when they make contact. Observe the unit under test to ensure its indicators behave as expected when connected to the PD240. If the power indicator doesn't light up, consult the user manual for troubleshooting, focusing on the unit under test's connection and the PD240 Proving Unit's battery condition. Performing these checks will help guarantee your PD240 Proving Unit is ready for accurate and safe testing.


