Bedienungsanleitung Mitsubishi FDTC35VF (Seite 22 von 24) (Englisch)

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Explanation of symbols

: Conduct the cleaning and adjustment according to the inspection result

: In case of abnormality after inspection, replace or repair the corresponding part.

: Conduct the periodic replacement (consumable components)

: Random failure

: Wear-out failure

Part Name Regular Inspection Preventive Maintenance*

Remarks

Part Name Details of Inspection Inspection Method Criteria <Standard> Details of Maintenance

Inspection

Interval

Maintenance Interval

(Used Hours/Duration)

Elapsed Years

123456789101112131415

Electric and

electronic

parts

Crankcase heater

- Conductivity check

- Insulation resistance measurement

- Appearance check

Tester

500 V mega

Visual inspection

- It should be in a conducting state

- The resistance value should be 1 M or more

- There should be no abnormality

- Replace it if it is not in a conducting state

- Replace it if the resistance value is 1 M or less

Every year

Before

the air-

conditioning

season

8 years



Consumable

components

Anti-freezing heater

- Conductivity check

- Insulation resistance, appearance check

Tester

500 V mega, visual

inspection

- It should be in a conducting state

- The resistance value should be 1 M or more,

there should be no abnormality

- Replace it if it is not in a conducting state

- Replace it if the resistance value is 1 M or less 20,000 Hr



Electric component box

(including inverter)

- Circuit insulation resistance check

- Terminal part, connector looseness check

500 V mega

Driver, visual

inspection

- The resistance value should be 1 M or more

- There should be no looseness at the connecting

part

- Clean with a brush in case of extreme dust adhesion

- Replace it if the resistance value is 1 M or less

- Retighten or re-insert it if there is looseness

25,000 Hr



Electrolytic

capacitor

- Capacitor (electrolytic) appearance check Visual inspection - There should be no liquid leakage or deformation - Appearance check, replace it if there is liquid

leakage

Smoothing

capacitor

- Measurement of electrical capacitance and

insulation resistance

- Appearance check

Electrostatic

instrument, 500 V

mega Tester

- Should be of speciﬁ ed volume or more

- The resistance value should be 1 M or more

- Replace parts regularly

- Replace it if the resistance value is 1 M or less 10 years



Consumable

components

Terminal

block

- Terminal part screw looseness, deposit of dirt Driver, visual

inspection

- It should not be loose

- There should be no deposited foreign matter

- Retighten it if it is loose.

- Clean with a brush in case of deposited foreign

matter adhesion

25,000 Hr



Electrical

component

(including

boards, etc.)

- HIC board short circuit check

- Visual check of dirt adhesion to the board, etc.

- Self-diagnosis mode, appearance check

Tester

Visual inspection

- Should be of a speciﬁ ed resistance value

- There should be no deposited foreign matter

- There should be no abnormal display

- Replace it if it is outside the speciﬁ ed resistance value

- Clean with a brush in case of deposited foreign

matter adhesion

- Replace or correct the part

25,000 Hr



Pressure sensor,

temperature sensor

- Open, short circuit, earth, appearance check Tester, visual

inspection

- Should be of a speciﬁ ed resistance value

- There should be no cracking or discoloration

- Replace it in case of disconnection and short

circuit

5 years



Switch, etc.

(including

FFB, ELB)

Electromagnetic

switch

Overcurrent relay

Auxiliary relay, etc.

- Operation, appearance check

- Rough contact surface

Visual inspection

- There should be no deformation

- It should operate as prescribed, there should be no

deformation

- There should be no deformation or discoloration

- Replace it in case of malfunction, deformation, and

discoloration

25,000 Hr



Switching power source

transformer

- Output voltage measurement Tester - Output voltage should be within a speciﬁ ed value - Replace it if there is voltage abnormality

10 years



Cooling fan

- Insulation resistance, abnormal sound generation 500 V mega, audible

inspection

- The resistance value should be 1 M or more,

there should be no abnormal sound

- Replace it if the resistance value is 1 M or less

- Replace it in case of fan lock

20,000 Hr



Fuse

- Appearance check Visual inspection - There should be no deformation or discoloration - Replace it when it is shutdown

10 years



Consumable

components

Note 1) Random fault is an unexpected failure which occurs before

the wear is progressed, within the service life of the parts and

equipment. It is difficult to establish a technological measure

against the random fault. At the moment, statistical handling is the

only measure against the random fault.

Note 2) The elapsed year marked with * assumes the operating time

as 10 hours/day and 2500 hours/year in a normal operating

condition without frequent start/stop. This may vary according to

the operating condition. Please check the calculation basis of the

elapsed year when making a maintenance contract.

Note 3)

illustrates the estimated timing when the wear-out

failure starts and how the failure rate increases as the time passes.

Mitsubishi FDTC35VF Seite 22

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