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MITSUBISHI
ELECTRIC
7.0 DAILY INSPECTION
Please perform the daily inspection while the UPS is running. The daily inspection items are
shown in Table 7.1.
!
NOTE
TABLE 7.1 How to perform daily inspection
No.
Subject
1.
Environmental
ambient
2.
Cabinet
Construction
3.
Operation
4.
LEDs
*Air filter also need to be checked during the daily inspection by visual check. Air filter required to
clean up 3 month period.
M9950 SERIES UPS
OWNERS / TECHNICAL MANUAL
The customers can only inspect exterior or environment of cabinet.
When the customers want to perform the detailed inspection,
contact the Authorized MITSUBISHI Service Representatives.
Procedure
Term
Dust or Gas
Daily
Dewdrops
Daily
Condensation
Temperature
Daily
Humidity
Vibration or
Daily
Audible noise
Overheating
When
needed
Air filter clog
When
needed
LCD sharpness
Daily
Brightness
Left-bottom LED
Indication terms:
Daily
Output voltage
Output current
AC input voltage
Output frequency
Battery voltage
Battery current
DC voltage
4 status LEDs
Daily
2 fault LEDs
Daily
MITSUBISHI ELECTRIC M9950 SERIES UPS
Period
Method/Tool
Visual check
and smelling
Visual check
Thermometer
hygrometer
Touch and
hearing
Touching
exterior
Visual check
Visual check
Visual check
Visual check
Visual check
Page Number:
7-1
Criteria and/or Action needed
Ventilate room atmosphere if
dusty or smelling gas.
Fix the dripping source
Dehumidify upon necessity.
Temperature: 32~104°F
Humidity: 30~90%
No condensation.
To be controlled at 77°F or
about by A/C.
Check if fans have irregular
sound.
Contact service representative
in case of abnormalities.
Contact service representative
in case of abnormalities.
Clean/wipe if clogged or dusty.
No characters faded, illegible
or any other abnormalities.
Left-bottom LED should be
green.
Contact service representative
when the LED shows red with
the backlight lost.
Check indication terms/values
if within the adequate window.
Also check indication meters
on surface of optional cabinet, if
installed.
Check if LEDs turn on, off or
flash according to the operation.
If UPS fault LED turns on,
scroll the screen to see fault
codes and record the codes.
Contact service representative
to tell about fault codes and
UPS symptom.
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