Take great care when working around energized electrical equipment. Contact
between unprotected body parts and electrical conductors can cause serious in-
jury or death. Do not wear jewelry or other conductive items while servicing
energized electrical equipment. Failure to comply with these precautions can
cause serious injury or death.
Replace or repair components only after the affected circuit has been secured,
locked out, and tagged out. Performing replacement with the circuit energized
may result in injury.
4. Take voltage readings with a multimeter, measuring at the connection points in the junction box (figure 1,
item 3) , to ensure that electrical circuits are deenergized. If voltage is present, ensure that the proper circuit
breakers are OFF, locked out, and tagged out (FM 55-502). If no voltage is present, continue with the
Figure 1. High Pressure Pump