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4. Safety and Maintenance Information
[1] Contact information
Manufacturer
Mitsubishi Electric Corporation AC&R Systems Works
Address:
Phone Number:
Installer
See the back cover.
Maintenance provider
See the back cover.
[2] Refrigerant Information
・See the nameplate for the refrigerant type, factory charged amount, and CO
2
equivalent.
・Charge or recover refrigerant through the service check joint.
・Refrigerant circuit must be serviced by a maintenance provider.
・Do not store spare refrigerant on site.
・It is illegal to release refrigerate containing chlorofluorocarbon into the atmosphere. Recover refrigerant
from the unit before disposing of it.
[3] Periodical Inspection
The table below summarizes the scheduled of periodical inspection to be performed by a maintenance
provider.
Periodical Inspection Schedule
Inspection
Item
(Inspection
Interval)
Check Point Check
Method
and tools
Note
Unit
(Biannual)
Check that the unit is not covered
with dust or dead leaves.
Visual
inspection
Check for loose or missing bolts and
nuts.
Visual
inspection
Check for rust. Visual
inspection
Touch up scratches with rust-proof paint as
necessary.
Check that the thermal and acoustic
insulations are not coming off.
Visual
inspection
Check for abnormal noises and
vibrations.
Auditory
inspection
Refrigerant
system
(Biannual)
Check for refrigerant leakage. Gas leak
detector
Check for sympathetic vibration
between pipes, capillary tubes, and
the compressor.
Visual
inspection
Check that all valves (expansion,
solenoid, and 4-way) are operating
properly.
Refer to the Parts Inspection and Replacement
Intervals table on page 16.
Check that the condensing
temperature is in the normal range.
While heating water, use the temperature
reading of the sensor on the water-side heat
exchanger outlet pipe in the liquid line (Approx.
300 mm from the water-side heat exchanger) as
the condensing temperature.
Water outlet temperature: 0 – +5 K
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