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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
・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)
Unit
Check that the unit is not covered
(Biannual)
with dust or dead leaves.
Check for loose or missing bolts and
nuts.
Check for rust.
Check that the thermal and acoustic
insulations are not coming off.
Check for abnormal noises and
vibrations.
Refrigerant
Check for refrigerant leakage.
system
(Biannual)
Check for sympathetic vibration
between pipes, capillary tubes, and
the compressor.
Check that all valves (expansion,
solenoid, and 4-way) are operating
properly.
Check that the condensing
temperature is in the normal range.
Check Point
Check
Method
and tools
Visual
inspection
Visual
inspection
Visual
Touch up scratches with rust-proof paint as
inspection
necessary.
Visual
inspection
Auditory
inspection
Gas leak
detector
Visual
inspection
Refer to the Parts Inspection and Replacement
Intervals table on page
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
13/20
equivalent.
2
Note
16.
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