15. Periodic Checks

Table 1 Maintenance and Checks

 

 

 

 

 

Unit

Parts

Check frequency

Checks

Evaluation criteria

Maintenance

 

 

 

Fan motor

 

• Check operating noise.

• No abnormal noises.

Replace if insulation has deteriorated.

 

 

 

 

• Measure insulation resistance.

• Insulation resistance 1 MΩ or more.

 

 

 

 

 

 

 

 

 

 

 

 

• Check operating noise.

• No abnormal noises.

Replace if abnormal noises continue de-

 

 

 

Bearing

 

 

 

spite replenishing oil.

 

 

 

 

 

 

 

Replenish oil annually.

 

 

 

 

6 months

• Check belt tension.

• Deflection load of 3 - 4kg per belt. Opti-

Adjust tension.

 

 

 

 

• Visually check for wear and damage.

mum deflection of 5mm.

Replace if stretch in belt circumference

 

 

 

 

 

 

 

 

 

 

• Check operating noise.

• Maximum stretch in belt circumference

is 2% or more, or if belt has been in use

 

 

 

Fan belt

 

 

of 2% in comparison to initial circumfer-

for 8000 hours or more.

 

 

 

 

 

 

ence.

Replace if belt is worn or damaged.

 

 

 

 

 

 

• No wear or damage.

 

 

 

 

 

 

 

• No abnormal noises.

 

 

 

 

 

 

• Visually check for contamination and

• No contamination or damage.

Clean

 

 

 

Air filter

3 months

damage.

 

Replace if filter is significantly contami-

 

 

 

 

 

• Clean

 

nated or damaged.

 

 

Indoors

 

6 months

• Check for contamination and blockage

• No contamination or blockage.

Clean if contaminated or blocked.

 

GB

 

• Check sealing of hose (inject water into

• No contamination or blockage.

Clean if contaminated or blocked.

 

 

Drain pan

 

of drain.

• No loose screws.

Tighten screws.

 

 

 

 

 

• Check for loose mounting screws.

• No significant deterioration.

Replace if deterioration is significant.

 

 

 

 

 

• Check for deterioration.

 

 

 

 

 

 

 

hose).

• No significant deterioration.

Replace if deterioration is significant.

 

 

 

Drain hose

 

• Check for contamination and blockage

 

 

 

 

 

 

 

of drain.

 

 

 

 

 

 

 

• Check for deterioration.

 

 

 

 

 

Linear

 

• Check action using operation data.

• Appropriate temperature change in re-

Replace if the valve itself is the cause of

 

 

 

expansion

 

 

lation to change in control opening.

problems in operation.

 

 

 

valve

1 year

 

 

 

 

 

 

Heat

 

• Check for blockage, contamination, and

• No blockage, contamination or damage.

Clean

 

 

 

exchanger

 

damage.

 

 

 

 

 

 

 

• Check appearance.

• No deterioration or broken wiring.

Replace if wiring is broken or deteriora-

 

 

 

Float switch

6 months

• Check for adhesion of foreign matter.

• No foreign matter.

tion is significant.

 

 

 

 

 

 

 

Clean if foreign matter present.

 

 

 

Display

1 year

• Check lighting of lamp.

• Lit at output ON.

Replace lamp if not lit at output ON.

 

 

 

lamp

 

 

 

 

 

 

 

 

 

 

 

 

 

Compres-

 

• Check operating noise.

• No abnormal noises.

Replace if insulation has deteriorated

 

 

 

 

• Measure insulation resistance.

• Insulation resistance 1 MΩ or more.

while coolant has been circulating.

 

 

 

sor

 

 

 

 

6 months

• Visually check for loose terminals.

• No loose terminals.

Tighten terminals if loose.

 

 

 

 

 

 

 

Fan motor

 

• Check operating noise.

• No abnormal noises.

Replace if insulation has deteriorated.

 

 

 

 

• Measure insulation resistance.

• Insulation resistance 1 MΩ or more.

 

 

 

 

 

 

 

 

 

 

Linear

 

• Check action using operation data.

• Appropriate temperature change in re-

Replace if the valve itself is the cause of

 

 

Outdoors cooled)-(air

expansion

1 year

• Check for broken wiring, deterioration,

lation to change in control opening.

problems in operation.

 

 

valve

• No broken wiring, deterioration, or un-

Replace if wiring is broken, shorted, or

 

 

 

 

 

 

 

 

 

 

Heat

 

• Check for blockage, contamination, and

• No blockage, contamination or damage.

Clean

 

 

 

exchanger

 

damage.

 

 

 

 

 

Pressure

 

and unconnected connectors.

connected connectors.

has significantly deteriorated, or if insu-

 

 

 

switch

 

 

 

 

 

• Measure insulation resistance.

• Insulation resistance 1 MΩ or more.

lation has deteriorated.

 

 

 

 

 

 

 

 

 

 

• Check operating noise.

• No abnormal noises.

Replace in case of abnormal noises, if

 

 

 

Cooling fan

 

• Measure insulation resistance.

• Insulation resistance 1 MΩ or more.

insulation has deteriorated, or if a fault

 

 

 

for inverter

 

• Check fault history.

• No heat-sink heating protection (4230,

has occurred.

 

 

 

 

 

 

4330) in fault history.

 

 

 

sRelocating or scrapping the unit.

•Specialist skills are required for relocation of the unit. Please contact your retailer or a consultant specified by the manufacturer.

•The coolant must be recovered before the unit is scrapped. Please contact your retailer or a consultant specified by the manufacturer.

11

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Mitsubishi Electronics PFD-P250500VM-A Periodic Checks, Maintenance and Checks, Relocating or scrapping the unit
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PFD-P250500VM-A specifications

The Mitsubishi Electronics PFD-P250500VM-A is a cutting-edge piece of equipment that exemplifies the company's commitment to advanced engineering and innovative technology in the field of power and automation solutions. Designed for robust performance, this model serves as a high-efficiency inverter that integrates seamlessly into various industrial applications.

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