Chiller & Gearbox Lubricant Tests

Spectrochemical analysis and physical property tests are used to assess lubricant and machine condition. Physical tests measure specific lubricant characteristics, such as viscosity, moisture content and acid number. Spectrochemical analysis measures wear concentrations and contaminant and additive elements.

Water & Total Acid Number
Water ingression can result in increased wear and corrosion, which can significantly affect lubricant performance and shorten bearing life. Excessive water will cause lubricant breakdown, decrease important lubricating properties and cause corrosion. Lubricant degradation allows for acid formation and also causes component corrosion.

Spectrochemical Analysis
Spectrochemical analysis detects elemental contaminants, such as silicon, in the form of silicon dioxide, or sand), which is often due to dirt ingression. The circulation of these hard particles causes abrasive component wear.

Elemental analysis can also identify abnormal bearing, shaft and impeller wear as well as corrosion products generated by contaminated lubricant.

Changes in viscosity – considered to be an oil’s most important physical property – can indicate improper practices, such as incorrect lubricant in use.

Test Method
Spectrochemical Analysis (21 elements) ICP (Inductively-Coupled Plasma)
Acid Number, Base Number (Ammonia) ASTM D974, D664
Water by Karl Fischer ASTM D6304
Viscosity @ 40ºC, cST (EVAC) ASTM D445 D-7279
Oil Filter Analysis 1 – Visual examination of filter media
2 – Microscopic examination of filter media debris