10-1-4
Daily/Periodic Inspection Items
Inspec-
tion cat-
egory
Inspec-
tion item
Inspection point
Inspection
frequency
Inspection method Criteria Meter
Daily
Peri-
odic
1 year
2 years
General Ambient
environ-
ment
Check ambient
temperature, hu-
midity and sur-
rounding atmos-
phere (presence
of dust, gas, oil
mist, water drop-
lets, etc.).
Required
Refer to 2-1 Installa-
tion on page 2-2.
Ambient tempera-
ture: -10 to 50°C,
no freezing Oper-
ating humidity:
95% max., no
condensation
Ther-
mometer
Hygrom-
eter
Recorder
Entire
system
There is no ab-
normal vibration
or sound.
Required
Perform visual and
acoustic inspection.
No faults
Power
supply
voltage
Check main cir-
cuit voltage.
Required
Measure line voltage
between inverter
main circuit terminals
L1/R, L2/S and L3/T.
Within allowable
AC voltage fluctu-
ation range
Tester,
digital
multime-
ter
Structur-
al com-
ponents
such as
the cas-
ing or
cover
Check for defor-
mation or dam-
age.
Required
Perform visual in-
spection.
No faults
No deposition of
dirt or dust
Required
Perform visual in-
spection.
No faults
10 Maintenance and Inspection
10-3
M1 Series Standard Type User's Manual (I669)
10-1 Maintenance and Inspec-
tion
10
10-1-4 Daily/Periodic Inspection Items
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