PKS-3.5A compressor: less power, less oil, less vibration — no teardown

Power draw and oil top-up fell, vibration eased, operating oil pressure recovered. PKS-3.5A compressor, Kharkiv Distillery. Ukraine · 2001. 7.6 %, 20 %, 2.1×.

Kharkiv Distillery · approved by: chief engineer S. F. Verbitsky · signed by: chief mechanic N. N. Kaydan, Krater Municipal Enterprise, XADO LLC

Kharkiv, Ukraine · work carried out 23.09–25.12.2001 · repeat measurements after 276 h of operation

PRODUCTXADO revitalizantadded with the oil during routine top-up in normal service

TREATED UNITPKS-3.5A piston compressorplant air system, receiver charged to 6.2 kgf/cm²

DOCUMENT TYPEReport on measurement of operating
parameters, signed and stamped by the plant

Key results

↓7.6%

power draw at 6.2 kgf/cm², 23.6 → 21.8 kW

↓20%

oil top-up consumption, 0.15 → 0.12 l/h

↓2.1×

compressor vibration velocity, 8.2 → 3.9 mm/s

↑21.9%

operating oil pressure, 3.2 → 3.9 kgf/cm²

EQUIPMENT	CONDITION AT START OF WORK	WHAT WAS MEASURED
PKS-3.5A compressor	Oil consumption 0.15 l/h — twice the rated 0.075 l/h	Oil pressure, receiver charging time, oil consumption, noise, vibration, power draw

Compressor operating parameters before treatment and after 276 hours

PARAMETER	BEFORE TREATMENT	AFTER 276 H	CHANGE
Operating oil pressure	3.2 kgf/cm²	3.9 kgf/cm²	up by 21.9 %
Power draw at 6.2 kgf/cm²	23.6 kW	21.8 kW	down by 7.6 %
Oil top-up consumption	0.15 l/h	0.12 l/h	down by 20 %
Vibration velocity	8.2 mm/s	3.9 mm/s	2.1× lower
Noise level	108.5 dBA	96 dBA	quieter by 12.5 dBA
Receiver charging time to 6.2 kgf/cm²	10 s	9 s	faster by 1 s

Measurements taken on the fully assembled unit, charging mode up to 6.2 kgf/cm². Rated oil consumption for the PKS-3.5A is 0.075 l/h.

What the report recorded

Before treatment the compressor used twice as much oil as its rating allows — 0.15 against 0.075 l/h. After 276 hours of operation on oil with XADO revitalizant the plant repeated the measurements, and all six parameters improved: operating oil pressure rose from 3.2 to 3.9 kgf/cm² — the pump holds its clearances again; oil top-up fell to 0.12 l/h; vibration velocity dropped from 8.2 to 3.9 mm/s, noise from 108.5 to 96 dBA; the receiver reaches working pressure in 9 seconds instead of 10. Power draw at the same pressure of 6.2 kgf/cm² fell from 23.6 to 21.8 kW — direct electricity savings on a unit running in shifts. All of this was achieved without teardown and without stopping the compressor: the product was added with the oil topped up in normal service.

The results apply to a PKS-3.5A piston compressor under the conditions of the Kharkiv Distillery at a working pressure of 6.2 kgf/cm²; on other units and in other duty cycles the figures may differ. The original signed and stamped report is published in full and available for download.

Current equivalent

Revitalizant gel for compressors and bearings →

Piston, screw and centrifugal compressors; rolling and sliding bearings running in an oil bath; machine-tool spindle units and slideways.

How such units are treated: Compressor

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