Water system personnel may perform some inspections, lubrication, and simple routine
maintenance. In general, do not open an electrical control panel unless the job
requires it. De-energize electrical equipment at the motor control center and at the
equipment itself before working on it. Always tag the open breaker and, if possible,
lock it in the "open" position.
Routine Inspections. Visually inspect electrical equipment every day.
Keep area clean. Look for the source of any leaks or unusual heat, noise, or odors.
On rotating equipment with sleeve bearings, check the oil level and see that oil rings
turn with the shaft. On rotating equipment with slip rings or commutators, check for
Inspect motors on rotating equipment weekly. Be sure that the shaft is
free of oil and/or grease from the bearings and start the motor to make sure it comes up
to speed in normal time. Check the bearings for excessive heat or noise. Check slip
rings and commutators for excessive sparking during starting.
Lubricate bearings according to the manufacturer's recommendations.
Do not lubricate excessively; lubrication on insulating surfaces will deteriorate the
insulation and gather dirt, which decreases the effectiveness of the insulation.
Switch Gear. Perform the following work items in accordance with the
manufacturer's instructions, but not less than once per year. Perform the work more
often if the equipment is exposed to excessive dirt or vibration.
These maintenance procedures apply to all electrical equipment that has
contact-making devices (circuit breakers, contactors, switches, relays, etc.), electrical
accessible electrical wiring or busses. Additional information on motor control
equipment can be found in par. 2.1.4.
Open equipment panel and wipe insulators and busses with clean,
soft, lint-free rags. Clean interior with soft brushes or a vacuum cleaner.
Check all accessible electrical terminations and connections,
including terminations of power and control cables, bolted bus connections, and all
accessible ground connections. Taped connections need not be checked. Check
visually and tighten loose connections with a screwdriver or wrench.
Record the voltage at the secondary terminal of each power and
distribution transformer, both loaded and unloaded. Compare this reading with