KR series（6-10kVA）user’s manual
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6. Maintenance and Fault Diagnosis
Summary
This chapter describes the maintenance guide, battery daily maintenance,
battery replacement precautions and fault diagnosis.
6.1 Maintenance Guide
Proper maintenance is the key to enable that the device can run in the best and with
a longer service life
6.1.1 Safety Precaution
Pay attention to the following safety operation regulations:
1. Do remember there always exist hazardous voltage inside UPS even when UPS
do not run. Please make sure that the power is cut off and safe before maintenance
2. When UPS operation, no golden or sliver accouterments like ring, watch wore.
3. Don’t assume the safe operation procedure as a matter of course. If any doubt,
consult with persons being familiar with the instrument.
6.1.2 Periodic Preventative Maintenance
To improve the efficiency and reliability of the UPS power system, please complete
the following preventative maintenance operations:
1. Keep environmental cleanliness to avoid the dust or chemical pollution to the
UPS.
2. Examine the input and output terminals every half year to ensure the good
contacts.
3. Examine periodically fans working status to prevent sundries to plug up the
ventilation. If any damage, please change at the time.
4. Examine periodically the batteries voltage to make sure that the voltage of the
battery is not low
5. Examine periodically the system running status to find the failure in time.
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