GE Fuji Electric MICRO-SAVER AF-300, Руководство для стартапов

Страница: 95 / 127

7-1
7. Maintenance and Inspection
To avoid failures and assure reliable long-term operation, make daily and periodic inspections. Take the following
precautions while performing any maintenance work.
WARNING
The intermediate dc circuit capacitor may retain its charge for some time after power is turned off. Therefore it may
take some time until the intermediate dc circuit voltage falls to a safe level. Do not open the control circuit terminal
block cover for at least 5 minutes after the power has been turned off. Then remove the control circuit and main
circuit terminal block covers and before starting any maintenance and inspection, use a multimeter verify that the dc
voltage between main circuit terminals P (+) and N (-) does not exceed a safe level (<25 V).
Electric shock may occur.
• Maintenance, inspection, and parts replacement should be carried out only by authorized persons.
• Remove watches, rings and other metallic materials before starting work.
• Use insulated tools.
• Never attempt to modify the drive.
Electric shock or injuries could occur.
7.1 Daily Inspection
Without removing the covers while the drive operates or while it is turned on, perform an external visual inspection
for operating abnormalities.
• Check that the drive is performaing to specification as expected.
• Check that the operating environment conforms to Chapter 2, Section “Operating Environment.”
• Check that the LED monitor displays normally.
• Check for abnormal noise, odor, or excessive vibration.
• Check for signs of overheating (such as discoloration) and for other defects.
7.2 Periodic Inspection
Perform periodic inspection using the list items of Table 7.1. Stop the motor, turn the drive off and remove the
control and main circuit terminal block covers to perform periodic inspection.
Table 7.1 List of Periodic Inspections
Check part Check item How to inspect Evaluation criteria
Environment 1) Check the ambient temperature, humidity,
vibration and atmosphere (dust, gas, oil mist,
or water drops).
2) Check if tools or other foreign matter or
dangerous objects are left around the equip-
ment.
1) Check visually or measure
using suitable test instru-
ments.
2) Visual inspection
1) Standard specifications
must be met.
2) No foreign or dangerous
objects present.
Voltage Check if the voltages of the main and control
circuit are correct.
Measure the voltages using a
multimeter or similar.
The standard specification
must be satisfied.
Keypad 1) Check if the display is clear.
2) Check for missing elements in the display
characters.
1), 2)
Visual inspection
1), 2)
The display can be read
and there is no fault.
StockCheck.com