User`s manual

Maintenance and Inspection

7-2

7. Maintenance and Inspection

7.1.1 Precautions for maintenance and inspection

(1) After turning power off, wait at least 10 minutes before starting maintenance and make

sure the charge lamp on the digital operator panel is off.

(2) Do not attempt to disassemble or repair the unit.

(3) Do not perform a megger test or voltage breakdown test on the robot driver.

7.1.2 Daily inspection

• Check for any abnormal conditions or operation such as listed below:

1. Check if the robot operates correctly according to the settings.

2. Check if the environment where the unit is installed conforms to the specifications.

3. Check the cooling system for abnormal conditions. (Control box, air filters, cooling

fans, etc.)

4. Check for abnormal vibration or noise.

5. Check for overheating or discoloration.

6. Check for unusual odors.

• Check the input voltage to the robot driver with a voltmeter during operation.

1. Check if power supply voltage fluctuates frequently.

2. Check if the line voltage is balanced.

7.1.3 Cleaning

• Always operate the robot driver in a clean condition.

• To clean the unit, wipe it gently with a soft cloth moistened with neutral detergent.

Note: Solvents such as acetone, benzene, toluene and alcohol can dissolve the

robot driver surface or peel the paint. Do not use such solvents. Using

detergent or alcohol might damage the display panel on the digital operator.

Do not use them to clean the display panel.

7.1.4 Periodic inspection

• Check the following points or sections that cannot be inspected during operation or

that require periodic inspection.

1. Check the cooling system for abnormal conditions. ... Check the fan for operation.

2. Check the screws for tightness and retighten if necessary. ... The screws and bolts

might loosen due to vibration or temperature changes. Carefully check that they are

securely tightened.

3. Check the conductors and insulators for corrosion or damage.

4. Measure the insulation resistance.

5. Check the cooling fan and replace if necessary.