2200LZJE-HO-C6-N_2013.12.
Chapter 5 Maintenance
Compound 2-stage Screw Compressor 2016**C
5.2 Maintenance List
5-4
5.2.2 Periodical
Inspection
Check the following items at specified intervals.
Table 5-3 Periodical Inspection Items
Item
Frequency of inspections
Remarks
Pressure gauges
/pressure sensors
Check once per year.
Thermometers
/temperature sensors
Check once per year.
Protective divices and
safty valves
Check once per year.
Suction strainer
Check after 500 hours from
the start of operation.
If the differential pressure between the front
and back of the suction strainer increases,
check and clean the suction strainer.
Check and clean once per
year.
Lubricant
Replace lubricant after 500
hours from the start of
operation.
Analyze oil every 6 months. When the analysis results do not meet the
management criteria provided in "5.3
Management of Lubricant" of this manual,
replace oil.
Oil filter
Replace once per year.
Replace oil filter when the differential
pressure between the discharge pressure
and oil supply pressure exceeds 0.15 MPa.
Cooling water side of oil
cooler
Check once per year.
Clean if excessively contaminated.
Cooling water side of
condenser
Check once per year.
Clean if excessively contaminated.
Mechanical seal
Check once per year or per
8,000 operating hours.
Note
*
To be replaced if any abnormality is found
However, in the case that it is difficult to
stop the operation not at regular inspection,
replace the mechanical seal assembly at
every inspection.
Coupling
Check once per year or per
8,000 operating hours.
Note
*
Note*: Inspection frequency is the specified period after delivery or operating hours, whichever comes
first.
