Maintenance Checklist for Commercial Freezers and Refrigerators

Commercial freezers and refrigerators are indispensable assets in the food service industry, playing a critical role in preserving the quality and safety of perishable goods. To guarantee optimal performance, extended lifespan, and minimal downtime, it is imperative to adhere to a consistent maintenance schedule.

This checklist by Allfield Refrigeration & Mechanical Services commercial refrigeration Perth experts offers detailed instructions designed to help you maintain your commercial refrigeration equipment, ensuring efficiency, safety, and dependability. If you notice your equipment is not functioning optimally, don’t hesitate to contact Allfield today for expert care and support. Contact us now to get started!

An important note for before you get started and after you’ve completed your maintenance: 

  1. Prior to cleaning and maintenance, ensure the equipment is switched off and disconnected from the power source to avoid potential electrical hazards
  1. After completing the cleaning and maintenance, keep a record of the maintenance schedule and any observations made during the process for future reference and maintenance planning

#1 Clean the condenser and evaporator coils 

  • Inspecting and cleaning of condenser and evaporator coils should occur every 1-3 months, depending on the usage and environmental factors
  • Check for excessive dirt, debris, and grease accumulation on the coils, as these can obstruct proper airflow and impair the equipment’s efficiency
  • Carefully remove any visible debris from the coils using a soft brush, taking caution not to damage the delicate fins
  • For a more thorough cleaning, use a vacuum cleaner with a brush attachment to eliminate dust and debris from hard-to-reach areas of the coils
  • To remove stubborn grease and grime, utilise a specialised coil cleaner, following the manufacturer’s instructions for proper dilution and application 
  • Allow the coil cleaner to work for the recommended time, then rinse it off gently with water, ensuring no residue is left behind
  • Inspect the coils after cleaning to confirm that all dirt and debris have been removed, and make sure they are dry before reconnecting the power source and resuming operation

#2 Inspect and clean fan blades and motors 

  • Schedule regular inspections of fan blades and motors for damage or wear every 3-6 months, depending on the usage and environmental conditions
  • Visually inspect the fan blades for signs of damage, such as cracks, bending, or excessive wear. Damaged blades should be replaced to ensure efficient airflow and prevent further damage to the motor
  • Use a soft brush or cloth to gently remove dirt and debris from the blades, being careful not to damage them in the process. For stubborn dirt, a mild soap and water solution can be used, followed by wiping the blades dry with a clean cloth
  • Examine the fan motor for any visible signs of wear or damage, such as frayed wires or loose connections. If needed, consult a professional technician, such as Allfield Refrigeration & Mechanical Services, for repairs or replacement
  • Check the manufacturer’s recommendations for lubricating the fan motor. If lubrication is required, use the specified type and amount of lubricant, applying it carefully to the motor bearings or other specified areas
  • After the cleaning and lubrication process, visually inspect the fan blades and motor once more to ensure they are in good condition and free of debris 
  • Reconnect the power source and power on the equipment, observing the fan’s operation to confirm it is functioning smoothly and efficiently

#3 Check door seals and gaskets 

  • Set a regular schedule to assess door seals and gaskets for damage or wear every 3 months, as these components play a critical role in maintaining optimal temperature control and energy efficiency
  • Visually examine the door seals and gaskets for signs of damage, such as cracks, tears, or deformation, which could compromise the equipment’s ability to maintain the proper temperature
  • Pay special attention to areas that frequently come in contact with the door frame, as these are more prone to wear and damage
  • If any compromised seals are found, replace them promptly to ensure the equipment continues to function efficiently and to prevent unnecessary energy consumption
  • To clean the gaskets, prepare a cleaning solution by mixing warm water with mild soap. Avoid using harsh chemicals or abrasive materials that could damage the gaskets
  • Using a soft cloth or sponge, gently clean the gaskets with soapy water, making sure to reach into crevices where dirt and grime may accumulate
  • After cleaning, thoroughly rinse the gaskets with clean water to remove any soap residue, as this could attract more dirt and grime 
  • Use a clean, dry cloth to wipe the gaskets dry, ensuring no moisture is left behind, as this can lead to mould and mildew growth
  • Reconnect the power source and power on the equipment, checking the door’s seal to confirm it is functioning properly and creating an airtight seal when closed

#4 Monitor and calibrate thermostats and temperature controls 

  • Schedule routine evaluations of thermostats and temperature control for accuracy every 3-6 months, depending on usage and the sensitivity of the products stored. 
  • Use a reliable, calibrated thermometer to compare the displayed temperature on the thermostat or temperature control with the actual temperature inside the equipment. Place the thermometer in different areas of the unit to ensure consistent readings throughout. 
  • If discrepancies are found between the actual temperature and the thermostat’s reading, consult the manufacturer’s guidelines or a professional technician, like Allfield, to calibrate the thermostat and achieve proper temperature regulation. 
  • If calibration is unsuccessful or the thermostat is found to be malfunctioning, replace it with a new, compatible unit to prevent spoilage and maintain energy efficiency
  • After calibrating or replacing the thermostat, monitor the temperature over the next few days to ensure the equipment is maintaining the desired temperature consistently

#5 Regularly defrost freezers 

  • Plan to defrost freezers according to the manufacturer’s guidelines, typically every 6-12 months, depending on usage and the specific model
  • Empty the freezer and store its contents in an appropriate temporary location, such as a cooler, to ensure the items remain at a safe temperature during the defrosting process
  • Follow the manufacturer’s instructions for defrosting the freezer, which may include allowing the unit to reach room temperature, using a fan to speed up the process, or utilising a defrost setting if available
  • As the ice melts, remove any large ice chunks and use towels or a mop to absorb excess water. Avoid using sharp objects to remove ice buildup, as this can damage the freezer’s interior
  • Once the ice buildup has been completely removed, clean the interior of the freezer to inhibit mould and bacterial growth. Use a mixture of warm water and mild washing-up liquid to clean the surfaces, avoiding harsh chemicals that could damage the interior
  • Rinse the interior thoroughly with clean water to remove any soap residue, as this can attract dirt and grime
  • Use a clean, dry cloth to wipe the freezer’s interior dry, ensuring no moisture is left behind
  • Reconnect the power source, power on the equipment, and adjust the thermostat to the desired temperature
  • Once the freezer has reached the appropriate temperature, return the contents to the unit, ensuring they are arranged in a way that allows for proper airflow

#6 Inspect and clean drain lines and pans: 

  • Set a routine schedule to examine and clean drain lines and pans every 3-6 months, depending on usage and environmental factors
  • Visually inspect the drain lines and pans for debris, mould, algae, or any other obstructions that could cause clogs and unpleasant odours
  • Use a soft brush or cloth to remove any visible debris from the drain pan. For stubborn dirt, a mild soap and water solution can be used, followed by wiping the pan dry with a clean cloth
  • For cleaning drain lines, use a flexible brush or plumber’s snake to carefully remove any blockages or buildup within the line
  • After removing any visible debris and obstructions, pour a drain pan treatment or a vinegar solution down the line to help break down any remaining buildup and prevent future blockages. Follow the manufacturer’s recommendations for the appropriate amount and frequency of use
  • Reconnect the power source and power on the equipment, observing the drain line and pan’s function to confirm that the water is flowing smoothly and efficiently

#7 Maintain and clean air filters 

  • Establish a routine to replace or clean air filters every 1-3 months, based on the manufacturer’s recommendations, to maintain optimal equipment performance
  • Remove the air filter from the equipment, taking note of its condition. Dirty filters can impede airflow and result in increased energy consumption, reduced efficiency, and potentially damage the equipment
  • If the filter is disposable, replace it with a new one that matches the manufacturer’s specifications. If the filter is reusable, clean it according to the manufacturer’s guidelines. This may involve washing it with a mild soap and water solution or using a vacuum cleaner to remove accumulated dust and debris
  • Allow the reusable filter to dry completely before reinstalling it to prevent mould and mildew growth
  • Once the filter is clean and dry or has been replaced, reinstall it in the equipment, ensuring it is seated properly and securely
  • Reconnect the power source and power on the equipment, checking for any noticeable improvements in airflow and overall performance

#8 Schedule professional inspections and maintenance 

Organise a professional inspection and maintenance service for your commercial refrigeration equipment at least once a year. By doing so, you’ll benefit from the expertise of a qualified technician who can detect potential issues, perform necessary repairs, and ensure your equipment operates at peak efficiency. Regular professional maintenance can help extend the life of your equipment and provide you with peace of mind, knowing your investment is well cared for. 

Does your business also require maintenance for your commercial air conditioning, Perth? Learn about preventative air conditioner maintenance here. 


Regular maintenance of commercial freezers and refrigerators is essential for optimal performance, extended lifespan, and minimal downtime. This checklist provided by Allfield Refrigeration & Mechanical Services offers detailed instructions for cleaning and inspecting key components of your refrigeration units. 

Critically, a minimum of an annual inspection of your units by a qualified professional team will not only prolong the lifespan of your equipment but also maintain efficiency and safety standards. Regular care and attention can help prevent expensive repairs and reduce downtime, ultimately saving your business valuable time and money. 

By scheduling regular inspections and maintenance with commercial refrigeration repairs Perth experts—Allfield Refrigeration & Mechanical Services—you can have peace of mind knowing your commercial refrigeration equipment is in good hands, allowing you to focus on other aspects of your business. 

Don’t wait for a problem to arise; be proactive in maintaining your equipment’s performance and efficiency. Contact Allfield Refrigeration & Mechanical Services today to schedule your professional inspection and maintenance service. 

1800 265 337