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WARNING
• Do not modify, disassemble, remove,
reinstall or repair the unit yourself as
incorrect dismantling or installation may
cause an electric shock or fire. Contact
your dealer.
• In case of accidental refrigerant leaks,
make sure there are no naked flames.
The refrigerant itself is entirely safe,
non-toxic and non-combustible, but it will
generate toxic gas when it accidentally
leaks into a room where combustible air
from fan heaters, gas cookers, etc. is
present. Always have qualified service
personnel confirm that the point of
leakage has been repaired or corrected
before resuming operation.
• Do not remove or reinstall the unit by
yourself. Incorrect installation may cause
electrical shock or fire. Contact your dealer.
11.2.2
Recommended inspection and
maintenance cycles
Be aware that the mentioned maintenance and
replacement cycles do not relate to the warranty
period of the components.
Table 1 assumes the following conditions of use:
• Normal use without frequent starting and
stopping of the unit.
Depending on the model, we recommend not
starting and stopping the machine more than
6 times/hour.
• Operation of the unit is assumed to be 10 hours/
day and 2,500 hours/year.
Table 1: “Inspection Cycle” and “Maintenance
Cycle” list
Component
Inspection
cycle
Maintenance cycle
(replacements and/or
repairs)
Electric motor
(fan, damper, etc.)
1 year
20,000 hours
PCB boards
25,000 hours
Heat exchanger
5 years
Sensor (thermistor, etc.)
5 years
Remote controller and
switches
25,000 hours
Drain pan
8 years
Expansion valve
20,000 hours
Electromagnetic valve
20,000 hours
NOTICE
1
Table 1 indicates main components.
Refer to your maintenance and
inspection contract for more details.
2
Table 1 indicates recommended
intervals of maintenance cycles.
However, in order to keep the unit
operational as long as possible,
maintenance work may be required
sooner. Recommended intervals can be
used for appropriate maintenance
design in terms of budgeting
maintenance and inspection fees.
Depending on the content of the
maintenance and inspection contract,
inspection and maintenance cycles may
in reality be shorter than listed.
11.3
Shortening of “maintenance cycle”
and “replacement cycle” needs to be
considered in following situations
The unit is used in locations where:
• Heat and humidity fluctuate out of the ordinary.
• Power fluctuation is high (voltage, frequency,
wave distortion, etc.) (the unit cannot be used if
power fluctuation is outside the allowable range).
• Bumps and vibrations are frequent.
• Dust, salt, harmful gas or oil mist such as
sulphurous acid and hydrogen sulphide may be
present in the air.
• The machine is started and stopped frequently
or operation time is long (sites with 24 hour
air conditioning).
Recommended replacement cycle of wear parts
Table 2: “Replacement Cycle” list
Component
Inspection
cycle
Maintenance cycle
(replacements and/or
repairs)
Air filter
1 year
5 years
High efficiency filter
(Optional accessory)
1 years
Fuse
10 years
Crankcase heater
8 years
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