2201Q4JE-MY-C9-N_2018.01.
Chapter 5 Maintenance and Inspection
Compound 2-stage Screw Compressor 4032**C
5.2 Maintenance and Inspection List
5-5
5.2.2
Periodic Inspection
Conduct inspection for the following items according to the specified schedule.
In addition, observe relevant laws and regulations on the inspections and recording of the results that
are provided for other related items such as any safety devices (e.g. gas leak detectors), or other utility
(gas/electricity) protection devices that constitute the package unit together with the compressor.
Table 5-3 Periodic Inspection Items
Item
Inspection interval
Remarks
Pressure gauge/pressure
sensor
Yearly inspection
Thermometer/temperature
sensor
Yearly inspection
Protection devices and
safety valves
Yearly inspection
Suction strainer
Inspection after 500 hours of
initial operation
Perform inspection and cleaning if
the differential pressure across the
suction strainer is high.
Yearly inspection and cleaning
Lubricating oil
Analyze the oil after 500 hours of
initial operation
Replace the oil if the analysis result
does not satisfy the control criteria
given in Section 4.1.4 "Lubricating
oil Management Criteria".
Analyze the Oil every six months
Oil filter element
Yearly replacement
Replace the oil filter element if the
pressure difference between the
inlet and outlet ports of the oil filter
exceeds 0.1 MPa.
Cooling water side of the oil
cooler
Yearly inspection
Clean it if it is heavily contaminated.
Cooling water side of the
condenser
Yearly inspection
Clean it if it is heavily contaminated.
Mechanical seal
Inspection every year or every
8000 hours of operation
Note*
To be replaced if any abnormality is
found.
If it is difficult to stop equipment
except for scheduled inspections,
replace the part at each inspection.
Coupling
Inspection every year or every
8000 hours of operation
Note*
Note*
: The inspection shall be performed according to the schedule or operating hours, whichever
comes first.