ENGLISH
User’s manual
22
UPS EVO DSP PLUS TM
8.4
Manual Bypass
The 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 mains.
This feature is useful while performing maintenance or service on the UPS.
Maintenance and service may only be performed by authorized technical personnel.
The procedure of switching into Manual Bypass shall only be executed by authorized
technical service personnel.
The steps for a correct switching into Manual Bypass during operation are explained below.
1.
Remove the Manual Bypass switch cover. The UPS switches automatically in Bypass mode.
2.
Bring the Manual Bypass switch from “UPS” to “BYPASS” position.
3.
Turn “OFF” the Input circuit breaker and turn “OFF” the Battery Box circuit breaker (only if there is an
external Battery Box).
4.
Turn the UPS OFF by pressing
OFF
button.
The steps for a correct returning from Manual Bypass to UPS are explained below.
1.
Turn “ON” the Input circuit breaker and turn “ON” the Battery Box circuit breaker (only if there is an
external Battery Box).
2.
Turn the UPS ON by pressing
ON
button.
3.
Bring the Manual Bypass switch from “BYPASS” to “UPS” position.
4.
Put the Manual Bypass switch cover back.
During Manual Bypass operation, loads are fed directly from Bypass mains. Therefore no
protection against mains disturbances or interruptions is present.
8.5
Battery Test
If you need to check the Battery Status when the UPS is running in Normal mode/Converter Frequency mode/ECO
mode, you could press the
TEST
button to let the UPS do the Battery Test.
The Battery Test starts immediately and it finishes after some seconds. If the batteries pass the test, no alarm will
be shown.
During the Battery Test, the graphic LCD and buzzer indication will be the same as at Battery mode except that
the
Battery
led is flashing.
To keep the system reliable, the UPS will perform the Battery Test automatically once per week.
User also can set Battery Test through monitoring software.
