If the power distribution panel must be kept in continuous operation, check and service only those items
that can be checked and serviced without disturbing operation. Make the complete checks and services
when the equipment can be shut down.
Table 4-2. Unit Preventive Maintenance Checks and Services.
Power distribution panel interval
Circuit breaker wire terminals
High voltage is present in this equipment. Do
not perform PMCS with the power on. Death or
serious injury may result.
Check intemal wiring for secure connections.
Check for burnt insulation and signs of
Check for secure mounting to circuit breaker support
Check for secure mounting and signs of damage.
Check for secure mounting and missing or broken
Check for corrosion and mildew.
Check for missing gaskets or hardware and secure
mounting in distribution panel.
Check torque in accordance with Table H-1.
Check terminations of cables from circuit breakers