Gamatronic Centric 50 kVA Installation Manual page 72

7 . 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: ___________________
___________________ ___________________ ___________________
8 . B yp 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 UPS 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
9 . 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 front fans and rear fans in each module are operating.
Front fans
Rear fans
10. Clean the Fans and the Fan Grilles

Done
1 1 . U P S V o l t a g e M e a s u r e m e n t s
Th e f o l l o wi n g m e a s u r e m e n t s m u s t b e p e r f o r m e d w h e n t h e U P S i s u n l o a d e d o r i s c o n n e c t e d t o a
c o n s t a n t , s t a b l e l o a d .
Measured value: ____
Vac
Use a calibrated voltmeter to measure the rectifier input voltages. Record the readings in the table below. Compare
your readings with the console display of the rectifier input voltage. If the readings differ, the UPS's input voltage
measurement may require calibration (
Modules > AC INPUT VOLTAGE CALIBRATION"
Location
Rectifier input
Use a calibrated voltmeter to measure the inverter output voltages according to the table below. Compare your readings
with the console display of the inverter input voltage. If the readings differ, the UPS's output voltage measurement may
require calibration (
"Setup > Module config. > AC CALIBRATION", or on touch screen "Main menu > Setup > Modules > AC OUTPUT
).
VOLTAGE CALIBRATION"
Inverter output
12. Input Isolation transformer
For UPS's with an input isolation transformer: does the output of
each transformer phase within the expected range?
Perform a visual inspection of the interior and exterior of the input
transformer.
Comments:
13. Output Isolation transformer
For UPS's with an output isolation transformer: does the output of
each transformer phase within the expected range?
Perform a visual inspection of the interior and exterior of the input
transformer.
Comments:
66
G
AMATRONIC
___________________ ___________________ ___________________
Comments ____________________________________________________
[ ] OK [ ] Not OK
[ ] OK [ ] Not OK
Examine and clean the fans and the fans' protective coverings of each module, from the
outside, using a vacuum cleaner or an air compressor.
Measure the voltage between Neutral and Ground at the bypass input. The value should be
no greater than 5 Vac.
"Setup > Module config. > AC CALIBRATION", or on touch screen "Main menu > Setup >
).
Voltmeter
Phases
reading
L1 – N
L2 – N
L3 – N
L1 – N
L2 – N
L3 – N
E I L .
LECTRONIC NDUSTRIES TD
___________________
___________________
Comments ____________________________
Comments ____________________________
Readings match?
Console
reading
YES
YES
DONE
YES
DONE
___________________
NO
NO
NO
Centric Installation Guide, rel. 2.8