Parts Inspection And Replacement Intervals; Safety, Ventilation, And Fire-Extinguishing Devices - Mitsubishi Electric CAHV-P500YA-HPB Instruction Manual

[4] Parts Inspection and Replacement Intervals

The table below shows the recommended inspection and replacement intervals. Replacement interval is a
recommended replacement period and not the warranty period. Note that the replacement interval depends
on usage environment. Check the unit components periodically and replace them as necessary before
problems arise to prevent adverse effects on other parts.
Parts Inspection and Replacement Intervals
Parts
Refrigerant Compressor
circuit
Air-side HEX
Water-side HEX
Solenoid valves
4-way valves
Check valves
Electric expansion
valves
Strainers
Refrigerant tank
Capillary tubes
Pipes
Electrical Solenoid valves, 4-way
circuit valve coils
Electric heater
(compressor case)
Fuses
Electronic substrates
Pressure switches and
sensors
Terminal blocks
Wires and connectors
Smoothing capacitor
Heatsink cooling fan
Ventilation Fans
system
Motors

[5] Safety, Ventilation, and Fire-Extinguishing Devices

Read their respective manuals and understand how to use them correctly. Perform regular inspection and
maintenance to keep them in good conditions.
Check item
High and low pressures, vibrations,
abnormal noises, insulation
resistance, loose terminals
High and low pressures, dirty fins
High and low pressures, water
pressure loss
Operation, leakage, clogging
Operation, leakage, clogging
Operation, leakage, clogging
Operation
Difference between the outlet and inlet
temperatures
Difference between the outlet and inlet
temperatures
Contact abrasion, vibrations
Contact abrasion, vibrations
Insulation resistance
Insulation resistance
External appearance
External appearance
Contact resistance at the contact,
friction wear on the capillaries
Loose terminals
Breakage, looseness, deterioration,
friction
Water leakage, deformation
Insulation resistance, abnormal
sounds
Balance
Insulation resistance, abnormal
sounds, vibrations
16/20
Inspection Replace-
interval (times ment
per year) interval
2 40,000
hours
2 10 years
2 10 years
2 7 years
2 7 years
1 10 years
2 7 years
1 When major
maintenance
is performed
1 10 years
1 10 years
1 10 years
2 7 years
2 20,000
hours
2 8 years
2 8 years
2 7–10 years
2 8 years
2 10 years
2 10 years
2 10 years
2 10 years
2 6–10 years