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AMATRONIC
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MegaV2 250 Installation Guide, Release 2.2
53
Al a r m s
Use Alarm Log to display the alarms. List the names of any active alarms: ___________________
___________________
___________________ ___________________ ___________________ ___________________
___________________
List the names of recent alarms: ___________________ ___________________ ___________________
___________________ ___________________ ___________________ ___________________
B y p a s s T e s t a n d M o d u l e M a i n t e n a n c e
Connect an oscilloscope to MegaV2 output terminals L1 and N. Press the BYPASS button to put the UPS in bypass
mode. Verify that the transfer takes place normally, with no interruption of power to the load.
[ ]
OK
[ ]
Not OK Comments ____________________________________________________
I n s p e c t a n d C l e a n t h e F a n s G r i d
Done
Examine and clean the modules' fans from the outside with a vacuom or air compressor, if
needed.
C h e c k F r o n t a n d R e a r F a n s
Use a flashlight to visually verify that the 3 front fans and 2 rear fans in each module are operating.
Front fans
[ ]
OK
[ ]
Not OK Comments ____________________________
Rear fans
[ ]
OK
[ ]
Not OK Comments ____________________________
V o l t a g e M e a s u r e m e n t s
Measured value: ____
Vac
Measure the voltage between Neutral and Ground at the bypass input. The value should be
no greater than 3 Vac.
Use a voltmeter to measure the bypass input voltages according to the table below. Compare your measurements with
the console display of the bypass input voltage.
Location
Phases
Voltmeter
reading
Console
reading
Readings match?
YES
NO
Inverter output
L1 – N
L2 – N
L3 – N
