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Maintenance and Inspection
Maintenance and inspection should be contacted with a specialty company.
All work must be conducted by authorized and licensed technicians.
Request for Maintenance and Inspection (To a specialty company for installation work)
The structural components of refrigeration unit do not last permanently but include those wearing out in a certain
period of time.
In order to prevent accidents before they occur, those components need to be inspected periodically before reaching
their service life and replaced.
Installation company needs to contract with the equipment user for performing scheduled inspection of the equipment
including the cooling system.
Service Parts and Replacement Guidelines
Major components requiring inspection and replacement in a refrigeration unit along with their frequency of inspection
and replacement are shown below. When any abnormality is detected by inspection, replace it early. As to the
engineering detail for inspection and replacement, refer to "Engineering Service Manual" issued by our company.
Inspection and replacement timing vary by operation rate and condition, ambient environment, and individual
component condition and cannot uniformly be determined. We request full inspection particularly at (1)
Commissioning, (2) Scheduled inspection, (3) System maintenance, etc.
Inspection items/Replacement parts
System overall (Each part temperature)
Abnormal sound,
Compressor
abnormal vibration
Fin clogging
Gas cooler
Fan rotation
Filter dryer
Piping component
Suction filter
Other piping positions
Fan motor
Activation of protection device
and control component
Electrical components
Terminal, wiring, etc.
Electrical box air filter
Inspection content/Replacement guideline
(1) Pressure condition should match the cooling
temperature
(2) Temperature of each part must be normal
(3) No abnormality exists in the installed condition.
No abnormal sound or abnormal vibration should be
generated.
Is the fin clogged with dust ? ... Scheduled cleaning
Is there any abnormality in the fan rotation ?
Replace the filter dryer for clogging, deformation, or large
temperature and/or large pressure differences between the
dryer inlet and outlet.
Replace the Suction filter for clogging, deformation, or large
temperature and/or large pressure differences (abnormally
low pressure) between the filter inlet and outlet.
Refrigerant leak, oil leak, deformation, abnormal vibration,
deterioration of heat insulation material
Replace when generating abnormal sound, heavy in
rotation, oil smearing, etc.
Replace when control failure by motion defect, chattering
etc.
Any change of color, deterioration of insulation
Clean the filter periodically (every 3 to 6 months) according
to the contamination.
EN - 41
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