LTD(Cond.) = Cond. Ref. Temp. – Cooling Water Outlet Temperature
LTD(Evap.) = Chilled Water Outlet Temperature – Evap. Ref. Temp.
  • A two-dimensional straight graph Representing LTD Analysis.

    LTD Analysis

    LTD lift is an index that shows whether the heat exchange performance of your chiller’s tube is deteriorating (LTD Management Criteria: Below 3°C).

  • An engineer is cleaning dirty tubes.

    Tube Cleaning

    Scales inside the heat tube interfere with heat transfer, reducing the life time and efficiency of the device, so regular cleaning is required.

  • Three-dimensional bar graph, expressing energy efficiency.


    Better performance and reduced energy consumption improve your chiller's reliability (Actual improvement values may ​​vary by site).

  • Oil flows out of a barrel with an open lid, and next to it is a graph about the time of oil replacement.

    Oil Change and Analysis

    The replacement cycle is analyzed through oil differential pressure analysis and replaces it with LG pure oil to secure reliability of parts. Analysis of oil can be added upon customer request.

  • A quarter of the chiller component is exposed, revealing a complex interior filled with intricate metallic parts.


    Prevention of damage to core components due to lack of lubrication

  • Vibration display on a two-dimensional graph, shows discharge superheat analysis.

    Discharge Superheat Analysis

    Site load analysis by analyzing the number of times the upper and lower limits (3 - 10°C) of the discharge superheat are reached.

  • A two-dimensional graph shows numbers that represent the operating zone.

    Annual Operating Zone Analysis

    Analysis of operating zones by temperature of chilled water and cooling water inlet.

  • A two-dimensional graph Expressing a stable driving environment.


    Propose suitable compressor and stable operating environment to secure the reliability of it and energy save. (A:Invertor, B:High Head Comp., C: Large Capa./High Head Chiller, D: Large Capa.Chiller)

  • A two-dimensional graph shows failure prediction representation through vibration analysis.

    Data-based Vibration Analysis

    Failure Prediction through vibration trend analysis.
    Note) A : Bearing Oil Temperature / B : Oscillation Vibration

  • A two-dimensional graph shows Hz specific analysis through vibration analysis.

    Spectral Vibration Analysis

    Prediction of failure through Hz spectral analysis.

  • A two-dimensional graph shows benefit of cost and avoiding compressor failure.


    Extension of compressor life time and reduction of overhaul costs and downtime through avoiding compressor failure.

  • A two-dimensional graph about analyzing the time of surges occurred.

    Surge Analysis

    The time of surges occurred in the compressor are analyzed.

  • A two-dimensional graph shows surges prevention Logic through self-learning.

    Surge Prevention Logic Application

    Surges are prevented by resetting self-learning surge lines.
    Note) A: Early Surge Line / B: Real Surge Line / C: Map Surge Line

  • A two-dimensional graph shows benefit through surge analysis.


    Prevention of compressor components damage, energy reduction, and stable product operation.

  • Absorbent components analysis equipment and analysis results report.

    Absorbent Component Analysis

    The analysis checks absorbent alkalinity which can lead to the development of scale and checks appropriate amount of corrosion inhibitors.

  • A device which can check absorbent through ionic method.

    Absorbent Purification

    Purification of absorbent solution by filter or ionic method.

  • Old and contaminated filters on the left, new filter images on the right.


    Energy savings and extension of chiller life time.