Supermarket Refrigeration & HVAC Leak Inspection Checklist

Verify refrigerant alarm system is functional and calibrated per manufacturer's specifications. Test alarm response time.

Confirm refrigerant sensors are correctly positioned in walk-in coolers and machine rooms, as per ASHRAE 15 guidelines.

Ensure refrigerant alarms are audible throughout the store and connected to a central monitoring system.

Inspect battery backup for refrigerant alarm system; verify it provides at least 24 hours of power in case of outage.

Verify refrigerant type used matches the sensor calibration and system design specifications. Document refrigerant type.

Review maintenance records for refrigerant alarm system; confirm annual calibration and functional testing are up-to-date.

Inspect the calibration date on each refrigerant sensor. Recalibrate if overdue according to manufacturer's recommendations.

Confirm a written procedure exists for responding to refrigerant alarms, including evacuation protocols and emergency contact information. Post procedure clearly.

Verify that a refrigerant usage log is maintained, documenting additions, removals, and leak repairs, as required by EPA regulations.

Inspect refrigerant recovery equipment for proper functionality and certification. Ensure technicians are trained in its use.

Measure oxygen levels inside walk-in coolers using a calibrated oxygen meter. Ensure levels are above 19.5%.

Inspect walk-in cooler door seals for damage or deterioration. Replace if compromised to prevent refrigerant leaks and maintain temperature.

Examine evaporator coils for ice buildup, corrosion, and cleanliness. Clean coils as needed to maintain efficiency and prevent mold growth.

Verify interior lighting in walk-in coolers is functional and provides adequate illumination for safe operation.

Ensure emergency exit mechanisms inside walk-in coolers are functional and unobstructed. Test the release mechanism.

Inspect floors inside walk-in coolers for ice buildup, spills, and damage. Address hazards to prevent slips and falls.

Verify temperature monitoring systems are functional and accurate. Calibrate thermometers regularly.

Inspect condensate drain lines for clogs or leaks. Ensure proper drainage to prevent water accumulation and mold growth.

Confirm proper signage is in place, including warnings about low oxygen levels and emergency exit instructions.

Verify proper air circulation within the walk-in cooler to prevent temperature stratification and ensure even cooling.

Inspect condenser units for refrigerant leaks using an electronic leak detector. Pay close attention to connections and welds.

Verify condenser fan operation; ensure fans are free from obstructions and operating at the correct speed.

Inspect condenser coils for dirt, debris, and corrosion. Clean coils as needed to maintain efficiency.

Examine electrical connections for tightness and corrosion. Ensure wiring is properly insulated and protected.

Verify condenser units are securely mounted and properly supported to prevent vibration and damage.

Inspect condensate drainage from HVAC units; ensure proper drainage to prevent water accumulation and mold growth.

Ensure adequate access is maintained around condenser and HVAC units for maintenance and repairs. Clear obstructions.

Inspect pressure relief valves on refrigeration systems to ensure they are not corroded or obstructed. Verify proper operation.

Check compressor oil levels (if applicable) and ensure they are within the manufacturer's recommended range.

Inspect vibration dampening pads or mounts on compressors and other equipment to ensure they are in good condition.

Verify technicians wear appropriate safety glasses or face shields when working on refrigeration systems.

Ensure technicians wear chemical-resistant gloves when handling refrigerants or cleaning coils.

Confirm technicians have access to and are trained in the use of appropriate respiratory protection (e.g., SCBA) when working in areas with potential refrigerant leaks or oxygen displacement.

Verify technicians wear hearing protection when working near noisy equipment (e.g., compressors).

Ensure technicians wear appropriate protective clothing (e.g., long sleeves, pants) to protect against skin contact with refrigerants or chemicals.

Verify technicians wear safety shoes with slip-resistant soles when working in areas with potential slip hazards.

Inspect PPE for damage or defects before each use. Replace damaged PPE immediately.

Confirm technicians have received adequate training on the proper use, maintenance, and storage of PPE.