Maintenance, Servicing And Faults - CyberPower OLS6000E User Manual

not connected to the building wiring terminal, for there is internal current source
(batteries).
In order to fully disconnect the UPS, first turn the input breaker in the "OFF"

position, then disconnect the mains lead.
 Indiscriminate operation of switches may cause output loss or damage to
equipment. Refer to instruction before conducting any control.
 While the UPS work as a parallel system, the external parallel cable should be
reinforced insulation.
 Ensure that no liquid or other foreign objects can enter the UPS.

1.3. Maintenance, Servicing and Faults

 Do not remove the enclosure since the UPS operates with hazardous voltages.
It is to be serviced only by qualified maintenance personnel.
 Caution! Risk of electric shock. Even after the unit is disconnected from the
mains power supply (building wiring terminal) components inside the UPS are
still connected to the battery which are potentially dangerous.
 Before carrying out any kind of service or maintenance, isolate UPS and
disconnect the batteries. Verify that no current is present and no hazardous
voltage exists in the capacitor or BUS capacitor.
 Batteries must be replaced only by qualified personnel.
 Batteries have a high short-circuit current and pose a risk of shock. Take all
precautionary measures specified below and any other necessary measures
when working with batteries:
─ remove all jewellery, wristwatches, rings and other metal objects
─ use only tools with insulated grips and handles.
 When changing batteries, replace with the same quantity and the same type of
batteries.
 Do not attempt to dispose of batteries by burning them. It could cause explosion.
 The UPS may be connected to external battery package. Proper disposal of
batteries is required. Refer to your local codes for disposal requirements.
Do not open or destroy batteries. Effluent electrolyte can cause injury to the skin

and eyes. It may be toxic.
Replace the fuse only by a fuse of the same type and of the same spec in order

to avoid fire hazards.
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