Troubleshooting
Reading line filter condition without guesswork: differential pressure basics
Green, yellow, red: what your line filter differential pressure indicator really says, when to change elements, and how to troubleshoot a sudden dP spike.
Knowledge base
Troubleshooting and maintenance guides
Practical answers from the parts trade: why discharge pressure drops, why oil carries over, and how to match part numbers with confidence.
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Troubleshooting
Downstream air quality: why your line filter order matters
Line filter order decides whether fine elements survive. See the coarse-to-carbon sequence, each stage's job, and how wrong order raises pressure drop.
Troubleshooting
Why your air filter element collapses at half its service life
Air filter element collapsing early? Wet media, installation stress, rapid cycling and overloading are the usual causes. Learn to diagnose from the old part.
Troubleshooting
How to cross-reference an air filter element when the OEM number is obsolete
OEM filter number obsolete? Measure the old element and match by compressor model to find a fit. See the dual-route cross-reference method that works.
Troubleshooting
Dust ingest: how a leaking air filter element damages your screw element
A leaking air filter element lets dust reach the screw element, oil circuit and separator. Learn the failure chain, warning signs and replacement logic.
Troubleshooting
Importing compressor parts from China: MOQ, packaging and lead time answered
Importing compressor parts from China? Straight answers on MOQ, sample orders, export packaging, lead time and documents before you request a quote.
Troubleshooting
Cross-reference without guesswork: how we verify fitment before quoting
A compressor filter cross reference only works if fitment is verified. See the exact checks we run on thread, bypass pressure and seals before quoting.
Troubleshooting
Genuine vs aftermarket oil separators: what actually fails first
Early oil separator failure usually comes down to five checkable details. See what fails first and what to verify before buying an aftermarket separator.
Troubleshooting
Separator pressure differential: when to change it and what it costs you
Rising separator differential pressure means higher energy bills and oil carry-over risk. Learn common change thresholds and how to verify a replacement.
Troubleshooting
Why your screw compressor keeps throwing oil into the air line
Oil carry-over raising your compressor oil bills? Learn the causes, how to confirm the separator is at fault, and what to check before ordering a replacement.
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Parts behind the guides
Consumables the guides talk about
The filter elements, separators and kits our troubleshooting guides reference.
Oil Filters
Air Compressors Replacement Oil Filter
Oil Filter is an indispensable core component in the daily maintenance and fault repair of industrial air compressors.Our product KL-1016 Oil Filter acts as the "guardian" of the equipment's oil circuit.It can accurately intercept impurities, metal fragments, and contaminants in the compressor's oil to establish the defense for machine....
Air Filters
Air Compressor Air Filter 16546-96064
SK-2850AY Single-Pass Air Filter with Iron Cover is a high-performance filtration unit manufactured by Ningbo Keli-parts Manufacture Co., Ltd. for industrial applications. Engineered with a specialized single-pass design and robust iron cover construction, this product delivers reliable air filtration for medium to large industrial power systems....
Oil Separators
Air Compressor Air Oil Separator P782913
The Keli-parts P782913 Air Oil Separator plays a key role in filtration for lubricated screw air compressor systems. It gets designed for solid, reliable operation right from the start. With its precise coalescing technology, the separator pulls out oil aerosols and small contaminants from the air stream pretty effectively....