Fan coils – FCU

Keep Your Chiller Running Properly with Regular Maintenance

LTD Analysis/Tube Cleaning

Increase chiller efficiency with tube inspection

Leaving Temperature Difference (LTD) analysis improves chiller performance and efficiency by verifying tube cleaning time and providing guidance to the customer for water quality management.

Notice)

LTD(Cond.) = Cond. Referee. Temperature. – Cooling water outlet temperature

LTD(Evap.) = Chilled Water Leaving Temperature – Evap. Referee. Temperature.

LTD Analysis

LTD lift is an index that indicates if the heat exchange performance of your tube cooler is deteriorating (LTD management criteria: below 3°C).

tube cleaning

Scale inside the heating tube interferes with heat transfer, reducing the life and efficiency of the device, therefore periodic cleaning is necessary.

benefit of

Better performance and lower power consumption improve the reliability of your cooler (actual values for improvement may vary by site).

Oil change

Ensure the reliability of the internal parts of the compressor.

Regular oil replacement improves the durability of major parts, ensuring stable product management.

Oil change and analysis

The replacement cycle is analyzed by oil differential pressure analysis and replaced with pure LG oil to ensure parts reliability. Oil analysis can be added upon customer request.

benefit of

PPrevention of damage to major components due to lack of lubrication

Annual Load Analysis

Propose suitable compressors for better operation

The annual operation pattern (load/height) is analyzed to provide the type of compressor proposal service and stable driving environment suitable for the site.

Discharge Overheat Analysis

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

Annual analysis of operating areas

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

benefit of

Provide suitable compressor and stable operating environment to ensure reliability and energy saving. (A: Inverter, B: High Head Comp, C: High Capacity Chiller/High Head, D: High Capacity Chiller)

Vibration analysis

Prevent damage with early failure detection of rotating parts

A service that predicts wear or failure of rotor components and suggests parts replacement prior to failure.

Data-driven vibration analysis

Failure prediction through vibration trend analysis.

Note) A: Bearing oil temperature / B: Oscillation Vibration

Spectral analysis of vibrations

Fault prediction by Hz spectral analysis.

benefit of

Extend compressor life and reduce overhaul costs and downtime by preventing compressor failure.

Surge Analysis and Prevention

Safe compressor integrity with surge prevention logic

A service to prevent damage to key compressor components and to reduce energy consumption by reducing the number of voltage spikes.

Surge analysis

The moments of surges that occur in the compressor are analyzed.

Surge Prevention Logic Application

Overvoltages are prevented by resetting the self-learning surge lines.
Note) A: Early surge line / B: Actual surge line / C: Map surge line

benefit of

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

absorbent analysis and purify

Improve heat exchanger performance and cooler integrity

Service to improve the performance of heat exchangers through the analysis and refinement of absorbent components (Li-Br).

Analysis of absorbent components

The analysis checks for absorbent alkalinity that can lead to scale development and checks for the proper amount of corrosion inhibitors.

absorbent purification

Purification of the absorbent solution by filter or ionic method.

benefit of

Energy saving and longer life of the cooler.

Cleaning of heat exchanger fins

Extend the life of the heat exchanger and improve its efficiency

Services to improve heat exchange performance and prolong its life by decontaminating condenser cooling fins and preventing fin corrosion.