
To ensure the PD240 Proving Unit functions properly before you start testing, follow these steps: First, do a visual inspection, checking for any damage like cracks, dust, or moisture, and make sure the cover is secure. Next, check the battery levels. The PD240 Proving Unit uses two 1.5V LR03/AAA batteries and one 6LR61 (MN1604, PP3) 9V alkaline battery; replace them if needed. Then, perform a power indicator test by connecting your testing probes to the PD240 Proving Unit terminals. A green LED should light up when contact is made. Additionally, when testing your equipment using the PD240 Proving Unit, observe the required indicators on your equipment to ensure they are lighting up as they should. Finally, consult the user manual if the power indicator doesn't illuminate; it provides troubleshooting tips, especially if there's a problem with the unit under test or the PD240 Proving Unit's battery. By following these steps, you can confidently confirm your PD240 Proving Unit is ready for testing.


