4 Inspections
E-18
4.2 Periodic Inspections
Perform the following inspections at least once a year.
*
If the product is installed in a panel, the temperature inside the panel is the
ambient temperature.
Inspection Item
Inspection
Period
Description
Correction
Ambi-
ent
condi-
tions
Ambient
tempera-
ture
*
At least 1 or 2
times every 6
to 12 months
Measure the tem-
perature and humid-
ity with a hydrometer
and thermometer
and measure corro-
sive gas. They must
be within specifica-
tions.
Remove sources
of contamination
or improve the
installation envi-
ronment.
Ambient
humidity
Atmo-
sphere
Visual exterior
inspection
At least 1 time
a year
There must be no
dirt, dust, oil, or
other foreign matter
on the product.
Clean the product
with air or a cloth.
Loose screws
There must be no
looseness in terminal
screws or connector
lock screws.
Tighten the
screws.
