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3.4 Periodic Inspection
Always to operate the unit normally, periodic inspections for each parts are required in order to confirm the
unit condition and maintenance separately pre-trip inspection.
The following table shows an example of the inspection plan.
No. Inspection item Inspection content 2nd year 4th year 8th year
General structure
1
Inspection for physical
damage
✓✓✓
2 Loose mounting bolts ✓✓✓
3
Condition of panels, hinge
and lock
✓✓✓
4
Control box and
Inverter box inspection
1) Cover packing inspection and
replacement
✓✓✓
2) Loose cable gland ✓✓✓
3) Internal cleaning ✓✓✓
5
Air leakage from unit
casing
Air leakage and clearance ✓✓✓
6
Seal inspection and
replacement
Ventilator cover packing ✓✓✓
7
Painted area recondition
(Touch-up paint)
1) Compressor ✓✓✓
2) Receiver ✓✓✓
3) Solenoid valve (coil cover) ✓✓✓
4) Unit ✓✓
8 Repainting
1) Compressor ✓
2) Receiver ✓
3) Condenser fan motor ✓
4) Condenser fan ✓
Refrigerant system
1 Refrigerant leakage ✓✓✓
2 Compressor
Water entering to compressor
electrical terminal
✓✓✓
3
Inspection and replacement
of sight glass
✓
4
Condition of cramp on
the refrigerant pipes and
gauge pipes
✓✓✓
5
Condition of thermal
insulation of refrigerant pipe
✓✓✓
6
Evaporator coil cleaning
(by water)
✓✓✓
7 Condenser coil cleaning
1) Water-cleaning ✓✓✓
2) Steam-cleaning (after pumping
down the refrigerant)
✓✓✓
0301-10LX10F11BEn.indd3-80301-10LX10F11BEn.indd3-8 2014/11/1916:36:372014/11/1916:36:37