Terminal block

Is there damage?

Visual inspection

Not abnormal

 

Smoothing

1) Is there electrolyte leakage, discoloration,

1), 2) Visual inspection

1), 2) Not abnormal

 

capacitor

crazing, or swelling of the case?

3) Capacitance

circuit

3) * Estimate life

 

valves protruding too far?

initial value x 0.85

 

expectancy from

 

 

2) Is the safety valve not protruding or are

 

Main

 

3) Measure the capacitance if necessary.

maintenance

 

 

information and from

 

 

 

 

 

 

 

 

 

 

 

measurements using

 

 

 

 

capacitance

 

 

 

 

measuring

 

 

 

 

equipment.

 

 

Resistor

1) Is there unusual odor or damage to the

1) Visual and

1) Not abnormal

 

 

insulation by overheating?

olfactory inspection

2) Less than about

 

 

2) Is there an open circuit?

2) Conduct a visual

±10% of the

 

 

 

Inspection or use

indicated

circuit

 

 

a multimeter by

resistance value

 

 

removing the

 

 

 

 

 

Main

 

 

connection on one

 

 

 

side.

 

 

 

 

 

 

Transformer

Is there abnormal buzzing or an unpleasant

Aural, olfactory, and

Not abnormal

 

and reactor

smell?

visual inspection

 

 

Magnetic

1) Is there rattling during operation?

1) Aural inspection

1),2)Not abnormal

 

conductor and

2) Are the contacts rough?

2) Visual inspection

 

 

relay

 

 

 

 

Control PC

1) Are there any loose screws or connectors?

1) Tighten.

1),2),3),4)Not

circuit

board and

2) Is there an unusual odor or discoloration?

2) Visual and olfactory

abnormal

connector

excessive rust?

3) Visual inspection

 

 

3) Are there cracks, damage, deformation, or

inspection

 

Control

 

4) Is there electrolyte leakage or damage to

4) * Estimate life

 

 

the capacitor?

inspection and

 

 

 

expectancy by visual

 

 

 

 

maintenance

 

 

 

 

information

 

 

Cooling fan

1) Is there abnormal sound or vibration?

1) Aural and visual

1) The fan must

 

 

2) Are nuts or bolts loose?

inspection. Turn

rotate smoothly.

system

 

3) Is there discoloration due to overheating?

manually (confirm the

2), 3) Not abnormal

 

 

power is off).

 

 

 

 

 

 

 

 

2) Tighten.

 

Cooling

 

 

3) Visual inspection

 

 

 

maintenance

 

 

 

 

4) * Estimate life

 

 

 

 

expectancy by

 

 

 

 

information

 

 

Ventilation

Is there foreign matter on the heat sink or intake

Visual inspection

Not abnormal

 

 

and exhaust ports?

 

 

Note: If equipment is stained, wipe with a clean cloth. Vacuum the dust.

 

 

Estimation of life expectancy based on maintenance information

The maintenance information is stored in the inverter keypad panel and indicates the electrostatic capacitance of the main circuit capacitors and the life expectancy of the electrolytic capacitors on the control PC board and of the cooling fans. Use this data as the basis to estimate the life expectancy of parts.

1)Determination of the capacitance of the main circuit capacitors

This inverter is equipped with a function to automatically indicate the capacitance of the capacitors installed in the main circuit when powering up the inverter again after disconnecting the power according to the prescribed conditions.

The initial capacitance values are set in the inverter when shipped from the factory, and the decrease ratio (%) to those values can be displayed.

Use this function as follows:

8-2

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Image 105
Fuji Bikes 5000G11S/P11S Use this function as follows, Estimate life, Is there discoloration due to overheating?