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Chiller Maintenance Checklists

Immediately resolve potential chiller failures and achieve maximum efficiency
Trouble-free temperature monitoring and real-time data every day

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What is Chiller Maintenance?

Chiller maintenance consists of scheduled inspections of commercial or industrial chillers aimed at extending equipment life and maintaining optimum efficiency. Poorly maintained chillers result in substandard performance and increased costs.

What is a Chiller Maintenance Checklist?

A chiller maintenance checklist is an assessment tool used by maintenance technicians to evaluate a commercial chiller’s working condition during scheduled inspections. It is also used by operators and maintenance personnel for daily temperature readings. A chiller maintenance checklist is an essential tool for coming up with preventive measures to avoid costly breakdowns.

This article features: 1) elusive chiller failures you should resolve before they worsen; 2) smart technology for trouble-free temperature readings daily; and 3) free chiller maintenance checklists you can download, customize, and use.

3 Often-missed Signs of Chiller Inefficiency

Even professional technicians and operators make the mistake of neglecting regular chiller inspections. It is essential that technicians diligently perform maintenance tasks so minor issues can be identified and resolved before they worsen. Here are the top 3 often-missed signs of chiller inefficiency:

1. High Approach Temperature

If the temperature difference between the supply water and return water is higher than intended, contaminants may have accumulated in the evaporator and condenser tubes. Consider improving your current water treatment system or chemically treat chiller tubes when cleaning them. Since heat-transfer efficiency directly correlates with chiller efficiency, it is crucial to keep all tubes free from sludge, scale, and algae.

2. Gradual Pressure Increase

If condenser pressure steadily rises within the month, water flow rates may be incorrect which reduces the efficiency of the chiller. Calibrate the control system by periodically removing accumulated debris on internal parts with a high-velocity, low-pressure blower. Non-condensables, or trapped air and moisture, also increases condenser pressure and compressor power, resulting in more power consumption.

3. Limited Refrigeration/Cooling Load

If a chiller consistently fails to reach full refrigeration load, oil may have migrated into the refrigerant which causes improper refrigerant levels. Changes in oil characteristics may mean significant compressor wear. When liquid refrigerant enters the compressor and evaporates, it leads to decreased cooling capacity, overloaded motor condition, and possible compressor impeller damage.

Chiller Maintenance App

Daily chiller maintenance tasks which involves manually keeping maintenance logs can be burdensome and time-consuming. Never miss another maintenance check using iAuditor, a powerful inspection platform. Now equipped with new temperature sensors, chiller operators and maintenance technicians can efficiently perform the following:

Global companies conduct inspections with us

See how a trusted food delivery business in Australia, Marley Spoon, immediately takes action based on real-time data using iAuditor temperature sensors:

iAuditor gives you the flexibility to power any inspection you require—onsite, underground, and across the globe. Inspect construction sites, restaurant food safety inspections, conduct temperature checks, pre-flight checks, toolbox talks, and more. It is the mobile forms inspection solution for all industries.


Shine Colcol

SafetyCulture Staff Writer

Shine has been professionally writing about virtually anything since her internship for a digital publisher of niche blogazines. She is passionate about building a culture of continuous improvement in the environmental, health, safety, and quality space through well-researched, engaging, and impactful content.