Daily And Periodic Inspection - Mitsubishi Electric FR-E700EX Instruction Manual

6.1.3

Daily and periodic inspection

Area of Inspection
Inspection Item
Surrounding Check the surrounding air temperature,
environment humidity, dirt, corrosive gas, oil mist, etc.
Check for unusual vibration and noise.
General Overall unit
Check for dirt, oil, and other foreign material.
Power supply Check that the main circuit voltages are
voltage normal.
(1) Check with megger (across main circuit
(2) Check for loose screws and bolts.
General
(3) Check for overheat traces on parts.
(4) Check for stains.
(1) Check conductors for distortion.
Conductors,
(2) Check cable sheaths for breakage and
cables
Main
Terminal
circuit
Check for damage.
block
Smoothing (1) Check for liquid leakage.
(2) Check for safety valve projection and bulge.
aluminum
electrolytic
(3) Visual check and judge by the life check of
capacitor
Check that the operation is normal and no
Relay
chatter is heard.
(1) Check that the output voltages across phases
Operation
(2) Check that no fault is found in protective
check
Control
circuit,
(1) Check for unusual odors and discoloration.
Overall
Protective
(2) Check for serious rust development.
circuit
(1) Check for liquid leakage in a capacitor and
Aluminum
electrolytic
(2) Visual check and judge by the life check of
capacitor
(1) Check for unusual vibration and noise.
Cooling fan (2) Check for loose screws and bolts
Cooling
system
(3) Check for stains
(1) Check for clogging.
Heatsink
(2) Check for stains.
(1) Check that display is normal.
Indication
(2) Check for stains.
Display
Meter Check that reading is normal.
Load Operation Check for vibration and abnormal increase in
motor check operation noise.

It is recommended to install a device to monitor voltage for checking the power supply voltage to the drive unit.

One to two years of periodic inspection cycle is recommended. However, it differs according to the installation environment.
For a periodic inspection, contact your sales representative.

The oil component of the heat dissipation grease used inside the drive unit may leak out. The oil component, however, is not flammable, corrosive, nor
conductive and is not harmful to humans. Wipe off such an oil component with a cloth, etc.
NOTE
Continuous use of a leaked, deformed, or degraded smoothing aluminum electrolytic capacitor (as shown in the table
above) may lead to a burst, breakage, or a fire. Replace such a capacitor without delay.
Description

terminals and earth (ground) terminal).
deterioration (crack, discoloration, etc.).
the main circuit capacitor (Refer to page 290)
with the drive unit operated alone is balanced.
and display circuits in a sequence
protective operation test.
deformation trace.
the main circuit capacitor (Refer to page 290)
Interval
Corrective Action at
Periodic

Alarm Occurrence
Daily

Improve environment

Check alarm location and

retighten
  Clean
 Inspect the power supply
 Contact the manufacturer
 Retighten
 Contact the manufacturer
 Clean
 Contact the manufacturer
 Contact the manufacturer
Stop the device and

contact the manufacturer.
 Contact the manufacturer
 Contact the manufacturer

 Contact the manufacturer
 Contact the manufacturer
 Contact the manufacturer
Stop the device and

contact the manufacturer.
 Contact the manufacturer
 Contact the manufacturer

 Replace the fan
Fix with the fan cover

fixing screws
 Clean
 Clean
 Clean
 Contact the manufacturer
 Clean
Stop the device and

contact the manufacturer.
Stop the device and

contact the manufacturer.
Inspection items
Customer's
Check
289
6