No. Inspection item
Inspection content
PTI
1
Inspection for physical damage
1) Casing frame
2) Compressor
3) Condenser fan motor
2
Loose mounting bolts
4) Evaporator fan motor
5) Control box
6) Temperature recorder box
7) Access panel
3
Condition of panels,
hinges and lock
4
Drain pan and drain hose
cleaning
5
Control box inspection
Cover packing inspection and replacement
6
Temperature recorder
Cover packing inspection and replacement
box inspection
7
Sealing condition of holes
Air leakage and clearance
through casing frame
1
Refrigerant leakage
2
Refrigerant
Inspection of moisture in the refrigerant,
and refrigerant charged amount
3
Inspection of high pressure
switch operational pressure
1) Liquid solenoid valve
2) Economizer solenoid valve
4
Operation and leakage
3) Injection solenoid valve
of solenoid valve
4) Hot gas solenoid valve
5) Defrosting solenoid valve
6) Discharge gas by-pass solenoid valve
5
Operation and leakage of
suction modulating valve
6
Operation and leakage of
electronic expansion valve
Function inspection and
7
replacement of liquid
moisture indicator
Condition of fasteners
8
on the refrigerant pipes
and gauge pipes
9
Condenser coil cleaning
Water-cleaning
3-41
3.7.1 Manual inspection
Some items subject to a manual inspection are listed below
Refrigerant
system
General
structure
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