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7.6. Manual (Maintenance) Bypass Instructions and Decommissioning

Manual bypass enables the user to isolate the electronic circuitry of the UPS from the mains and

the load without interrupting the load operation by connecting the loads directly to the bypass

supply.

In order to transfer to Manual Bypass without interruption, do the following instruction

respectively;

 Press Off key pad for about 5 seconds, the Inverter output will be turned off, then the

output load is supplied by Bypass loop and “OFF” would be written on LCD screen (as drawing

B).

 Remove the cover of Manual Bypass circuit breaker.

 Switch the manual bypass circuit breaker (F4) to “ON” position.

 See

drawing on LCD. It means UPS operates on Manual Bypass Mode.

 Switch the output circuit braker (F2), the input circuit breaker (F1) and the breakers on external

battery cabinets if any- to “0” position.

The loads will be continued to be supplied directly from the mains.

In order to transfer the loads from Manual Bypass to UPS without interruption, do the following

instruction respectively;

 Switch the output circuit braker (F2), the input circuit breaker (F1) and the breakers on external

battery cabinets if any- to “I” position.

 Switch the manual bypass circuit breaker (F4) to “OFF” position.

 Make sure UPS operates on Bypass Mode (as drawing B).

 Press the UPS On Switch for approx. 5 seconds. If there is no problem after the self-test UPS

starts to operates on Online Operation (norl).

 Replace the cover of Manual Bypass circuit breaker.

This feature is useful while performing maintenance or service and shall only be executed by

authorized technical service personnel.

During Manual Bypass operation; in case of any mains interruption, all loads on the output

will be deenergized. Manual Bypass Operation should not be preferred for long time use.

inform DSP FLEXIPOWER SERIES User Manual

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