6 Maintenance
Maintenance is critical, but for trouble free operation and long service life of equipment, regular maintenance should be
performed on the switchboard and carried out by competent, trained personnel wearing proper PPE. During maintenance,
follow the local authority jurisdiction and/ or individual facility procedures to properly lockout/ tag out the equipment.
6.1 Setting Up a Maintenance Schedule
• It is highly recommended to set a maintenance schedule for the switchboard.
• Note the usage of the equipment and determine how often maintenance should be performed.
• Before performing any maintenance make sure the power is turn off and every thing is de-energized.
• Ensure that OSHA approved solvents comply with local regulations are used for cleaning.
• The solvent should be non-flammable, with a threshold limit of 300 PPM or higher.
6.2 Maintenance Inspections
Maintenance inspections should be performed on the switchboard and accessories periodically, depending on the
maintenance schedule established by the end user. Perform visual and physical inspections to ensure the working conditions
of the equipment.
Below are the visual and physical inspections that should be performed.
1. Visual – Proper operation of all indicators, meters, and instruments.
2. Physical – All bolted covers are properly secured.
3. Visual – Proper operation of heaters and thermostats, if available.
4. Physical – Check all bolt connections to ensure the correct fitment. If discoloration or corrosion exist, then there
may be an overheated connection.
5. Physical/Visual – Make sure all cables are tightly secured and supported.
6. Visual – Look for signs of wear and tear on control wiring. Wire should be replaced if uncertain.
7. Physical – Clean the equipment by wiping all areas with a clean cloth or the use of compressed dry air.
8. Physical/Visual – If an overhead lifting device is present and used, make sure the gear mechanism and rope are
in tack and performing properly before lifting.
Other than stated above, maintenance should be carried out on all individual devices and instruments, according to the
specific maintenance requirements laid down by the manufacturer. This includes and is not limited to the low voltage circuit
breakers, instruments, indicators, meters, and any other possible components that are installed within the equipment.
6 Maintenance Proprietary and Confidential ©2024 Vertiv Group Corp. 41
Vertiv™ UL891 Switchboard Installer/User Guide
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