No refrigerated display can completely defrost during its automatic defrost cycle, meaning a certain amount of ice or frost will always remain on the evaporator or cooling panel. This ice buildup can cause your cabinet to struggle in maintaining its ideal temperature. When the natural moisture in the air comes into contact with the cold surfaces inside the freezer, it freezes. Over time, this frozen layer forms an insulating barrier around the cooling components, reducing their ability to efficiently cool the cabinet.
In ventilated cabinets, the situation is further complicated as the ice accumulation can restrict airflow around the display. This limits the circulation of cold air, which is crucial for maintaining a consistent temperature. In extreme cases, the ice may become so thick that it prevents the fan from blowing at all. When this happens, cold air can no longer circulate properly, leading to uneven cooling or even complete failure of the cabinet to maintain the desired temperature.
The presence of ice forces the system to work harder to reach and maintain set temperatures, placing additional strain on vital components like the fan blower, evaporator, and compressor. This extra workload can result in increased energy consumption, higher operational costs, and eventually cause the components to fail, leading to expensive repairs or replacements.
Preventative maintenance is crucial to reducing the impact of ice buildup. Regularly turning off the cabinet to let it defrost fully, paired with proper cleaning, will help prevent ice formation from becoming excessive. By addressing this issue proactively, you ensure that your display cabinet continues to function efficiently, keeping your products fresh and safe, even in warm and humid weather.
Understanding Ice Accumulation in Deli Counters
Deli display counters generally use one of two cooling methods:
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Static Cooling:
This system uses a refrigerated panel to radiate cool air throughout the cabinet. The panel’s cold surface can attract moisture, leading to ice accumulation if not regularly defrosted.
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Ventilated Cooling:
With an evaporator hidden at the base and a fan circulating cold air, ventilated cabinets often face ice buildup due to air moisture freezing around the evaporator. This restricts airflow and may even cause the fan to stop.
Preventative Maintenance Tips
1. Regular Defrosting:
To maintain the efficiency of your deli display counter and prevent excessive ice buildup, make defrosting a routine part of your maintenance schedule. Here’s how to ensure the best results:
Empty the Counter: Begin by removing all products and transferring them to a backup refrigerator. This ensures that your products remain fresh and safe while you work on defrosting. Clearing the counter will also give you unobstructed access to all internal surfaces for thorough cleaning.
Turn Off Overnight: At least once a week, power down the counter and allow it to defrost naturally overnight. This gradual warming period will help the accumulated ice melt without stressing or damaging internal components. Allowing the cabinet to reach room temperature ensures a more comprehensive defrost. While a full overnight defrost is necessary weekly, best practice involves doing it every night if possible, especially in high-humidity areas. Increased humidity leads to quicker ice formation, which can impede airflow and hinder cooling.
Wipe Excess Moisture: After defrosting, use a soft cloth to wipe away any excess moisture that might have pooled. This step helps prevent water from damaging the cabinet’s internal components or leaking onto the floor, where it can become a slipping hazard. Make sure to reach all corners and edges for a complete cleanup.
Additional Tips:
Consider these points to further optimise your defrosting routine:
- Location Matters: If your deli display counter is placed in a humid environment, more frequent defrosting may be required. High-humidity areas increase the rate and amount of ice formation.
- Inspect Door Seals: Check door gaskets regularly to ensure they’re intact and sealing properly. A faulty seal can let warm, moist air in, leading to increased ice buildup.
- Monitor Temperature Settings: Make sure your thermostat settings align with the manufacturer's recommendations.
By incorporating these defrosting tips into your regular maintenance, you can keep your display counter functioning efficiently while reducing strain on its cooling system. Proper defrosting ensures that your deli products remain fresh and safe to serve.
2. Cleaning Guidelines:
Proper cleaning methods can help maintain the longevity of your deli counter:
- Avoid Hot Water: Do not use hot water to melt ice quickly. Sudden temperature changes may cause cracks or damage to internal components.
- Gentle Detergents: Use mild detergents or non-abrasive cleaners with warm water. Apply them using a soft cloth to prevent scratches and preserve surfaces.
- Prevent Water Damage: Avoid letting water accumulate at the bottom of the cabinet, which can leak into electronic parts, leading to corrosion or electrical damage.
- Sanitise Surfaces: After removing food debris and cleaning with detergent, sanitise surfaces to keep them hygienic for food display.
3. Be Cautious with Abrasive Cleaners:
Avoid scouring pads or abrasive cleaners that can scratch or wear down transparent or stainless steel surfaces, compromising their appearance and efficiency.
Seek Additional Support
If ice buildup continues to hinder your deli counter's performance despite regular defrosting and cleaning, professional intervention may be necessary. Contact Caterboss Customer Service & Support for assistance. We can help with diagnosing issues, repairing faulty components, or recommending replacement equipment.
Summary
Incorporating these maintenance routines will help your deli display counter avoid ice buildup, ensuring reliable temperature control and preserving product quality. For more expert advice or to explore a comprehensive range of catering equipment, call Caterboss today.
