Mitsubishi Heavy Industries ESA30E-25, Technical Manual

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'15 • HM-T-246
4.4 Component replacement as a guide
For maintenance, check and preventive maintenance, please note implemetation to replace components
We would like to ask all customers owning this product to have a periodical maintenance and to replace components by our authorized service man in order to maintain the safety of product and
to keep its function in good condition.
In this table, the contents of periodical checking on the product under the general usage condition and its maintenance cycle and the estimated time to replacement of each components are
shown.
E specially regarding the estimated time for replacement of components, it is decided depending on the water and air quality and setting time of hot water operation and etc.
Regarding the concrete maintenance and inspection, please consult with out distributor.
Component Check point
Inspection cycle
(Time/Year)**
Estimated time
for replacement
Components of
refrigeration circuit
Compressor
High pressure, intermediate pressure, low pressure, vibration, sound, insulation
resistance, loose connection of terminal
0,000 hours
Heat exchanger (E vaporator) 0 years
Gas cooler (water heat exchanger)
High pressure, intermediate pressure, low pressure, pressure loss of water,
discharge pipe temperature
* 0 years
Solenoid valve Behavior, leak, clogging 0 years
E E V (E lectronic expansion valve) Behavior, leak, clogging 0 years
Strainer Temp difference between inlet and outlet ports of strainer At heavy service
Capillary tube Contact wear, vibration 0 years
Refrigerant pipe Contact wear, vibration 0 years
Components of
electrical circuit
Relay Behavior, contact resistance at contact point, insulation resistance 0 years
Coil and body of solenoid V alve & E E V Insulation resistance 0 years
Crankcase heater Insulation resistance 0,000 hours
Anti-freezing heater (Drain pan, Water piping) Insulation resistance, fallen leaves and dirts on the drain pan 0,000 hours
Fuse Apparent condition years
P CB (for Control, Inverter and Water pump) Apparent condition 0 years
High pressure switch (H)
P ressure sensors Contact resistance at contact point
Is any rubbing on the capillary tube found?
0 years
Terminal block Loose connection of terminal 0 years
Wiring and connector Disconnection, looseness, deterioration, rubbing 0 years
Capacitor Leakage of electrolysis solution, deformation ,000 hours
Cooling fan Insulation resistance, anomalous sound 0 years
Magnet contactor (C) Contact resistance at contact point, behavior ,000 hours
Outdoor fan
Fan propeller Balance, crack 0 years
Fan motor Insulation resistance, anomalous sound, vibration 0,000 hours
Components of
water circuit
Water pump Behavior, vibration, anomalous sound, insulation resistance, water leakage * years
Flow regulator (CWFV ) Behavior, vibration, anomalous sound, insulation resistance, water leakage * years
Motor valve (CWFV to CWFV ) Behavior, vibration, anomalous sound, insulation resistance, water leakage * years
P ressure reducing valve Behavior, anomalous sound, water pressure, water leakage * years
Check valve Behavior, anomalous sound, water pressure, water leakage * years
Strainer Clogging, water leakage *
Cleaning
times/year
P lease ask our distributor for details.
** It is recommendable to inspect at least one time / year.
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