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Immediately resolve potential chiller failures and achieve maximum efficiency through a chiller maintenance.
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A chiller maintenance checklist is a tool used by maintenance technicians to evaluate the working condition of industrial or commercial chillers. It helps operators and maintenance personnel record daily temperature readings and identify preventive measures to avoid costly breakdowns. This essential checklist ensures efficient operation and helps prevent potential failures in chiller systems.
Chiller maintenance is the process of regularly inspecting commercial or industrial chillers to extend equipment life and maintain optimum efficiency. While chiller maintenance varies per type of chiller: reciprocating, centrifugal, screw, and scroll, preventive chiller maintenance should also be carried out. Maintaining the good working conditions of air-cooled chillers and water-cooled chillers is crucial to prevent substandard output and avoid increased costs.
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:
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.
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-condensable, or trapped air and moisture, also increase condenser pressure and compressor power, resulting in more power consumption.
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.
A chiller maintenance checklist helps facility managers and maintenance technicians easily inspect pressure and temperature gauges and proactively identify potential chiller issues. To make sure that yours is comprehensive, check the following items to include in a chiller maintenance checklist:
General inspection/housekeeping – Check the cleanliness of the mechanical room, status of electrical panels, piping inspection for leaks, and proper assembly of equipment.
Temperature readings – Inspect chiller setpoint, return water temperature, supply water temperature, and condenser water temperature.
Working conditions – Make sure of proper condition of pressure and temperature gauges, ability to maintain setpoint, smooth operation (no short cycling), pump noise levels and leak inspection, and piping insulation condition.
Water quality – Check any signs of corrosion or scaling
Oil pressure – Ensure that oil pressure and temperature are at appropriate levels, also check for oil leaks
Electrical system – Verify that electrical panels are properly closed
See how a trusted food delivery business in Australia, Marley Spoon, immediately takes action based on real-time data using Mitti (by SafetyCulture) temperature sensors:
Mitti (by 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.
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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.
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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 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.
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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 Mitti (by 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.
