6.0MAINTENANCE
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WARNING
THERE ARE NO
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CAUTION
The unit is supplied by two power sources. Unit may be electrically live if either of the two input sources is ON, even when the electronics module is removed. Lethal voltages exist inside the unit. Turn OFF and lock out BOTH input power sources before removing covers or working inside.
Minimal periodic maintenance of the SmartSwitch is required in normal operation. For assurance of continued protection against SmartSwitch failure, periodic transfer testing of the Smart Switch is recommended. For manual transfer tests, refer to the transfer test information in the operating guidelines section of this manual. For automatic transfer tests at programmed intervals, see the
The SmartSwitch includes a replaceable electronics module. To replace the electronics module, follow the unit bypass instructions and place the unit on bypass to the source that is currently supplying the load. Unlock and unlatch the electronics module. Slide the electronics module out of the SmartSwitch. Replace the module with a module having the same part number or approved equivalent. Failure to use the approved replacement module may result in misoperation of or damage to the SmartSwitch.
Monitoring of the SmartSwitch status (such as by way of the status relay output) is strongly rec- ommended to allow detection of source failures or SmartSwitch failures before loss of power to the load. A summary alarm in the absence of any source failure or transfer inhibit alarm generally indicates a SmartSwitch failure. Prompt action to identify and correct the situation is recom- mended to prevent loss of power to the load.
Even the most reliable equipment can fail. For information or repair assistance, contact your local Liebert representative or Liebert Global Services. To contact Liebert Global Services in the U.S., call
Maintenance 17
