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VI. MAINTENANCE
WARNING!!!
DO NOT OPEN the covers of the UPS because there are no user serviceable parts inside. DO
NOT TOUCH battery leads. There is high voltage even if the UPS is off. Therefore no one
should open the covers of the UPS except authorized service personnel. Otherwise, serious
injuries may occur.
6.1 Scheduled Maintenance
Some semiconductor devices inside the UPS do not require any maintenance. Cooling fans are the only
moving parts. If the environment is clean and cool enough, the scheduled maintenance requirements will be at
minimum level. On the other hand, periodic checks and maintenance based on well prepared documents will
increase the performance of the UPS and prevent some unimportant faults to become serious ones.
The equipment has been designed to require minimum maintenance effort. The user should follow the
instructions below.
6.2 Daily checks
Check the UPS everyday and be careful about the following:
1. Check the operator control panel. Verify that all LEDs and parameter measurements are normal and
there is no alarm message on the indicator panel.
2. Check if the device is overheated.
3. Check the cooling fans’ operations.
4. Check if there is any sensible change in the noise level of the equipment.
5. Check if there is any stoppage on the ventilation path. If so, clean the dust using a vacuum cleaner.
6. Make sure that there is nothing placed on the UPS.
6.3 Weekly checks
1. Record the results on the indicator panel.
2. Measure and record voltages on each phase.
3. Measure and record currents on the output of the UPS.
4. Check batteries status by performing a manual battery test. Use a dry humid gland to clean the cover of the
UPS.
Record the observations if possible. Check if there is any difference with the previous records (observations).
If the last recorded values are significantly different from previous records, please check If the load has been
changed, and if so please record the type, size, and position of this load. These information will be very
valuable in helping the service personal in determining any possible errors.
If there is significant change in the parameter values without any reason please immediately call the qualified
service personnel.
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