Chiller Maintenance

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

entretien des cellules de refroidissement|Chiller Maintenance Checklist for Commercial Chillers

What is Chiller Maintenance?

Chiller maintenance is the process of regularly inspecting commercial or industrial chillers to extend equipment life and maintain optimum efficiency. While chiller maintenance vary per type of chiller—reciprocating, centrifugal, screw, and scroll—preventive chiller maintenance should also be carried out. Maintaining the good working condition of air-cooled chillers and water-cooled chillers is crucial to prevent substandard output and avoid increased costs.

What is a Chiller Maintenance Checklist?

A chiller maintenance checklist is an assessment tool used by maintenance technicians to evaluate an industrial or 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.

Chiller Maintenance: 3 Often-missed Signs of 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:

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.

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 increase condenser pressure and compressor power, resulting in more power consumption.

Limited Refrigeration/Cooling Load

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

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 SafetyCulture temperature sensors:

SafetyCulture 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.

Jona Tarlengco
Article by
Jona Tarlengco
Jona Tarlengco is a content writer and researcher for SafetyCulture since 2018. She usually writes about safety and quality topics, contributing to the creation of well-researched articles. Her 5-year experience in one of the world’s leading business news organisations helps enrich the quality of the information in her work.

Explore more templates

Chiller Preventive Maintenance Checklist for Industrial Chillers
A chiller preventive maintenance checklist is used by manufacturing facility chiller operators and maintenance personnel to daily inspect different types of industrial refrigeration equipment such as centrifugal, screw, reciprocating, and scroll. Easily check an unlimited number of industrial chillers and take photos of detected defects or done repairs with this intuitive checklist. If critical repairs cannot be done on the spot, you can use this checklist to create an action and assign it to key personnel with a priority level and due date.
Chiller Plant Maintenance Checklist
A chiller plant maintenance checklist is used by maintenance supervisors to schedule weekly or monthly inspections, implement appropriate preventive measures, and protect the cooling plant from breakdowns. Use this chiller plant preventive maintenance schedule checklist to easily log temperature readings, observe excessive noise or vibration, inspect the refrigerant level and more. Schedule maintenance checks in advance and receive notifications when completed.
Chiller Commissioning Checklist
A chiller commissioning checklist is used to thoroughly record observations before and after the start-up of chiller systems. Accurately capture suction, discharge, oil, and brine temperatures using SafetyCulture temperature sensors. Automate temperature monitoring of chiller systems, easily manage risks through proactive alerts to the right people when something goes wrong, and stay in control of your day-to-day operations.