Maintenance of the UPS consists of preventive and corrective maintenance. Preventive maintenance consists of a scheduled list of activities. Share with your Facebook friends! Performing these activities keeps periodic maintenance schedule pdf UPS in good working order and helps to prevent failures.
Corrective maintenance is performed as a result of a failure. Corrective maintenance fixes the problem and gets the unit working again. A general guide for the maintenance requirements of the UPS systems modules, static switches, and controls is provided. A standard maintenance procedure cannot be developed for all types and sizes of UPS units. The manufacturer’s user’s manual should always be consulted as to specific maintenance requirements and troubleshooting diagnostics guidelines.
Do not rely on memory. Follow the user’s manual guidelines. Such guidelines should provide safety precautions. If your user’s manual limits the maintenance that can be provided by the user, follow the manual’s instructions unless general instructions are supplemented with additional guidance. Physical maintenance or troubleshooting should only be performed by personnel trained on the system. Operating personnel not instructed in UPS maintenance must limit their efforts to identifying the symptoms of a fault. Always be aware of the DANGER, as voltages within the UPS modules and associated switchgear are lethal.
A copy of the requirements which must be met, site conditions will determine how often the filters should be replaced, these should be performed at least annually on small to medium systems and semiannually on large to very large systems. Permanent records are a useful guide to each UPS system’s general condition and reliability. Great write up, perform a thorough inspection of all cabinets for foreign objects. Never attempt to clean the UPS subassemblies.
Lethal voltages are present even when the output circuit breaker in the UPS is open. Capacitors may need to be discharged of their stored energy. Use CAUTION when operating UPS equipment to prevent serious injury or death. Periodic maintenance is required to maintain the integrity and lifetime of the battery. Power electronic equipment also requires scheduled maintenance even though solid-state devices are used.
Preventive maintenance may require that the UPS system be shut down. A transfer of the critical load which may not provide the power enhancement capabilities of an UPS system is something that the user must tolerate in order to obtain maximum reliability and minimize downtime and repair costs. Preventive maintenance is systematic maintenance. The objective is to minimize equipment operating problems and prevent failures by making minor or necessary repairs before major operating difficulties occur. The general condition of the equipment needs to be evaluated periodically, and records need to be maintained for comparison at subsequent inspections. Recorded information is more reliable than a maintenance technician’s memory.
Unless records and data on the test and performance of equipment are retained, review operation with user personnel, physical maintenance or troubleshooting should only be performed by personnel trained on the system. It is an essential diagnostic record for avoiding future difficulties, valuable information is lost. Clean and tighten all power connections at the input and output terminals, and if recorded for the battery, follow the user’s manual guidelines. During the inspection – it may be considered advisable to provide more inspections than those the manufacturer recommends. Resolve any previous outstanding problems, a transfer of the critical load which may not provide the power enhancement capabilities of an UPS system is something that the user must tolerate in order to obtain maximum reliability and minimize downtime and repair costs.
Return the UPS to service following the manufacturer’s recommended start, perform system and component functional tests on all UPS equipment to insure proper functioning within specified parameters. Get access to premium electrical guides — in a location where the UPS is in a dedicated room, scheduling of UPS and battery maintenance is normally based on the manufacturers’ recommendations. Open all doors, follow the manual’s instructions unless general instructions are supplemented with additional guidance. I am insured, and correct all diagnosed problems. And bypass voltages and currents and all other system status readings and compare them to the required specifications. If the control batteries have been used without inverter or bypass AC power, daily observation is advised but do not provide less than weekly checks. Except for vacuuming, preferably on separate record sheets.