7400 Series UPS User Manual Chapter 5 - Maintenance
Single Module and One plus One Systems Introduction
6310018a.02.doc
5-1
Issue 2
(02/98)
5. Chapter 5 - Maintenance
5.1 Introduction
This chapter contains the procedures necessary to effect general
maintenance of the UPS module and battery. Certain procedures entail
gaining internal access to the UPS, and should only be undertaken by a
competent engineer who is familiar with the operation and layout of the
equipment and understands the areas of potential hazard. If you have any
doubts concerning safety or the method of carrying out any procedure
then contact an approved service agent for assistance or advice. If the
locally approved agent is not known to you, then you should contact the
Customer Services & Support department at the address shown at the
front of this manual.The manufacturer offers customer training, at a
nominal fee, if required. Such training can range from a one-day operator
course to in-depth training on maintenance and troubleshooting lasting
several days, and can be carried out at the manufacturer’s plant or at the
customer premises.
5.2
Safety Precautions
When working on the UPS remember that the equipment contains live
voltages at ALL TIMES unless it is externally isolated from the mains
supply, bypass supply and batteries. It is essential that the safety and
precautionary notes contained throughout this manual are read and
FULLY UNDERSTOOD before touching any UPS internal component
part.
5.3
Scheduled Maintenance
The UPS utilises solid-state components which are not subject to wear,
with the only moving parts being the cooling fans. Scheduled
maintenance requirements, beyond ensuring that the environmental
conditions remain suitably cool and clean, are therefore minimal.
However, a well documented periodic program of inspection and
preventive maintenance, as suggested below, will help to ensure
optimum equipment performance and may serve to detect certain minor
malfunctions prior to them developing into a major fault.
Carry out a daily walk-by inspection of the UPS, checking the following
points:
1. Carry out a spot check of the operator control panel; ensuring that all
mimic LED indications are normal, all metered parameters are
normal and no warning or alarm messages are present on the display
panel.
2. Check for obvious signs of overheating.
3. Listen for any noticeable change in audible noise.
4. Ensure that the ventilation grills around the UPS are unobstructed.
5. If possible, log the results of the inspection, noting any discrepancies
from the norm.
5.3.1 Daily checks
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