Mitsubishi FR-BU2-1.5K, Инструкция по эксплуатации

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46
PRECAUTIONS FOR MAINTENANCE
AND INSPECTION
7.4 Daily and Periodic Inspection
*1 One to two years of periodic inspection cycle is recommended. However, it differs
according to the installation environment.
Consult us for periodic inspection.
A
re
a of
Ins
pect
ion
Inspection Item Description
Interval
Corrective Action
at Alarm
Occurrence
Custo-
mer's
Check
Da
ily
P
er
iodi
c *
1
Gen
era
l Surrounding
environment
Check the ambient temperature,
humidity, dirt, corrosive gas, oil mist ,
etc.
{
Improve
environment.
Overall unit
Check for unusual vibration and
noise.
{
Check alarm
location and
retighten.
M
ain
cir
cu
it
General
(1)Check with megger (across main
circuit terminals and earth
(ground) terminal).
{
Contact the
manufacturer.
(2)Check for loose screws and bolts.
{
Retighten.
(3)Check for overheat traces on the
parts.
{
Contact the
manufacturer.
(4)Check for stain.
{
Clean.
Conductors,
cables
Check cable sheaths for breakage
and deterioration (crack,
discoloration, etc.).
{
Contact the
manufacturer.
Terminal block Check for damage.
{
Stop the device
and contact the
manufacturer.
Resistor
(1)Check for crack in resistor
insulation.
{
Contact the
manufacturer.
(2) Check for unusual odor.
{
Contact the
manufacturer.
C
o
ntr
ol
ci
rc
ui
t/
pro
tect
ive ci
rc
ui
t
Operation
check
Check that no fault is found in
protective and display circuits in a
sequence protective operation test.
{
Contact the
manufacturer.
P
ar
ts ch
eck
Overall
(1)Check for unusual odor and
discoloration.
{
Stop the device
and contact the
manufacturer.
(2)Check for serious rust
development .
{
Contact the
manufacturer.
Aluminum
electrolytic
capacitor
Check for liquid leakage in a
capacitor and deformation trance.
{
Contact the
manufacturer.
C
oolin
g syst
em Heatsink
(1)Check for clogging.
{
Clean.
(2)Check for stain.
{
Clean.
Air filter, etc.
(1)Check for clogging.
{
Clean or replace.
(2)Check for stain.
{
Clean or replace.
Indi
ca
tion
Indication
(1)Check that display is normal.
{
Contact the
manufacturer.
(2)Check for stain.
{
Clean.