2200LZJE-HO-C6-N_2013.12.
Chapter 5 Maintenance
Compound 2-stage Screw Compressor 2016**C 5.3 Management of Lubricant
5-7
5.3.2 Lubricant Replacement Frequency
5.3.2.1 First system startup
When the system is started up for the first time, since the lubricant may get contaminated or
deteriorated due to scale inside the piping and vessels, sample and analyze the lubricant 500 hours
after starting operation.
If the results do not meet the management criteria for each oil type detailed in Tables 5-5 through 5-7,
replace the lubricant.
5.3.2.2 During regular operation
Lubricant deteriorates gradually as the system is operated over time.
The deterioration rate depends on the operating conditions, oil type, and any foreign substances or
water in the oil. Sample and analyze the lubricant every 6 months and if the results do not meet the
management criteria for each oil type detailed in tables 5-5 through 5-7, replace the lubricant.
If oil filters frequently clog or the oil has turned dark and unclear, replace oil after removing the cause of
problem.
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