How to Keep Your Traulsen Commercial Refrigerator Clean and Running Well

What Traulsen refrigerators are and why they matter in your kitchen

Traulsen makes commercial-grade refrigeration equipment used in restaurants, delis, bakeries, and other food businesses. Their units are built to handle heavy daily use and maintain precise temperatures for food safety. If you own or operate one of these refrigerators, understanding how to maintain it properly will extend its life, keep your food safer, and help you avoid costly repairs.

Traulsen refrigerators come in several styles: reach-in models (the upright or undercounter boxes you open from the front), pass-through units, and specialty cabinets for specific foods like meat or produce. Each type has the same basic maintenance needs, though the layout of shelves and compartments may differ. The core job is the same: keep cold air moving, keep the coils clean, and organize food so air circulates properly.

Key Takeaways

• Clean the condenser coils on your Traulsen unit every two to four weeks, depending on how much dust and grease your kitchen produces, because dirty coils force the compressor to work harder and fail sooner.
• Check door seals monthly by closing a dollar bill in the door—if it slides out easily, the seal is worn and cold air is leaking out, raising your energy costs and food safety risk.
• Organize shelves so air can flow freely around all food items, and never block the vents inside the cabinet, or the unit will develop cold spots and warm zones.
• Keep the drain line clear by flushing it with warm water monthly, because a clogged drain traps water inside the cabinet and creates mold and odors.
• Your Traulsen manual lists the exact refrigerant type and compressor model for your unit—keep this information handy so a technician can service it correctly without guessing.

Cleaning the condenser coils without damaging the unit

The condenser coils sit behind or underneath your Traulsen refrigerator and release the heat that the refrigerant pulls out of the cabinet. When grease, dust, and lint build up on these coils, the compressor has to work much harder to push heat out, which raises your electric bill and shortens the life of the unit. In a busy kitchen, coils can get dirty in two to four weeks.

Unplug the unit before you start. Locate the coils—most Traulsen models have them accessible from the back or bottom, though some have a removable panel you'll need to take off first. Use a soft brush or a coil cleaning brush (a long-handled brush with bristles designed for this job) to gently brush away loose dust and debris. Do not use a wire brush or anything sharp, because you can puncture the coils and release refrigerant.

For stubborn grease, use a vacuum with a brush attachment or a compressed air canister to blow debris away from the coils. If you use compressed air, hold the canister upright and use short bursts—never shake it or tilt it, or liquid will spray out and damage the coils. After cleaning, plug the unit back in and let it run for at least 30 minutes before loading food back inside.

Checking and replacing door seals so cold air stays inside

The rubber gasket around the door of your Traulsen refrigerator creates an airtight seal when the door closes. Over time, this gasket hardens, cracks, or warps, and cold air leaks out. A leaking door makes the compressor run constantly, wastes energy, and creates warm spots where bacteria can grow on food.

Test the seal monthly with the dollar bill test: close a dollar bill halfway in the door and try to pull it out. If it slides out with no resistance, the seal is failing. Look at the gasket itself—if you see visible cracks, hardening, or gaps where the gasket no longer touches the frame, replacement is due soon.

To replace the gasket, unplug the unit and open the door fully. Most Traulsen gaskets are held in place by a groove or channel around the inside of the door frame. Gently pry out the old gasket with a plastic tool (not metal, which can scratch the frame). Order a replacement gasket from Traulsen using your model number—it's printed on a label inside the unit or on the back. Insert the new gasket into the groove, starting at the top corners and working your way around. Make sure it sits evenly in the channel all the way around before you close the door.

Organizing shelves and vents so air flows evenly

Cold air in a Traulsen refrigerator moves through vents in the back or sides of the cabinet. If you block these vents with food or containers, air cannot reach all parts of the unit, and you'll end up with cold spots (where food freezes) and warm spots (where bacteria can grow). The goal is to create an invisible path for air to flow from the vents to every shelf and back to the compressor.

Never stack food directly against the back wall or sides of the cabinet. Leave at least two inches of space between the wall and any container. Do not place large items on the top shelf if they block the vents—check your manual to see where the vents are located on your model. Store heavier items on lower shelves and lighter items on top, which also makes the cold air work more efficiently because it naturally sinks.

Use shallow containers rather than deep ones, so air can circulate around and under the food. If you use wire shelves (common in Traulsen units), they allow air to pass through better than solid shelves. Avoid lining shelves with plastic or paper, because this blocks airflow. If you need to catch spills, use a shallow tray that sits on the shelf but leaves space underneath for air to move.

Clearing the drain line to prevent water buildup and odors

Your Traulsen refrigerator has a drain line that carries condensation (the water that forms when warm air enters the cold cabinet) out of the unit. This line usually runs from inside the cabinet to a drain pan underneath or to a floor drain. If the line gets clogged with food particles, mold, or mineral buildup, water backs up inside the cabinet, creating puddles, mold, and bad smells.

Locate the drain opening inside your cabinet—it's usually a small hole in the floor of the unit or in the back wall. Once a month, flush it with warm water using a turkey baster or a small funnel. Pour slowly so the water has time to flow through. If water backs up or drains slowly, the line is partially clogged. Use a thin, flexible brush or a plumbing snake to gently push the clog out. Do not use harsh chemicals or high-pressure water, which can damage the line.

Check the drain pan underneath the unit (if your model has one) and empty it if water has collected. Wipe it clean and rinse it with warm water. If the pan smells bad, a small amount of mold or bacteria is growing in it—wash it with a mild detergent and dry it completely before replacing it.

Keeping your Traulsen manual and service records in one place

Your Traulsen refrigerator came with a manual that lists the model number, serial number, refrigerant type, compressor specifications, and the location of all major parts. This information is essential if you ever need to call a technician or order replacement parts. Many people lose this manual or store it somewhere they can't find it when they need it.

Create a simple folder (physical or digital) for your refrigerator. Store the manual, any warranty paperwork, and a record of every service call or repair. Write down the date, what was fixed, and the cost. This record helps you spot patterns—for example, if the compressor keeps cycling on and off, a technician can see from your notes that it's been doing this for months, which tells them the problem is not new.

Take a photo of the model and serial number label with your phone and save it to your notes. That way, if you need to order parts or call for service, you have the information instantly without hunting for the unit or the manual.

Recognizing when your Traulsen needs professional service

Some problems you can fix yourself—a dirty coil, a clogged drain, a worn gasket. Others require a trained technician with the right tools and refrigerant recovery equipment. Know the difference so you don't waste time on a problem that needs professional help.

Call a technician if the unit is not reaching temperature (the thermometer inside reads warmer than it should), if you hear unusual noises like grinding or hissing, if the compressor runs constantly but the cabinet stays warm, or if you see frost or ice buildup inside the cabinet. These are signs of refrigerant loss, compressor failure, or a broken expansion valve—all of which require specialized equipment to diagnose and repair.

Keep the phone number of a commercial refrigeration technician in your phone. When you call, have your model number and serial number ready. Tell them what you've already checked (coils cleaned, door seal intact, drain clear) so they know what to focus on. A good technician will ask these questions before they come out, because it saves time and money.

Frequently Asked Questions

How often should I defrost my Traulsen refrigerator?

Most Traulsen commercial units have automatic defrost cycles that run during off-hours, so you don't need to defrost manually. Check your manual to see if your model has this feature. If frost is building up inside the cabinet even with automatic defrost running, the defrost cycle may be failing and you need a technician to check it.

What temperature should my Traulsen refrigerator be set to?

Food safety guidelines recommend 41°F or below for most refrigerated foods. Your Traulsen has a thermostat dial or digital display—set it to 38°F to 40°F to give yourself a small safety margin. Use a separate thermometer inside the cabinet to verify the actual temperature, because the dial can drift over time.

Can I use my Traulsen refrigerator outside or in a garage?

Traulsen commercial units are designed for indoor use in climate-controlled spaces. Using one outside or in an unheated garage can damage the compressor and void the warranty. If you need cold storage in a garage, ask a technician about models rated for those conditions.

Why is my Traulsen making noise?

Some noise is normal—the compressor cycles on and off, and refrigerant moves through the lines. But grinding, squealing, or hissing sounds mean something is wrong. Grinding usually means the compressor is failing. Hissing can mean refrigerant is leaking. Call a technician to diagnose the noise before the unit breaks down completely.

How long do Traulsen refrigerators usually last?

With regular maintenance—cleaning coils, checking seals, clearing drains—a Traulsen commercial refrigerator can run for 10 to 15 years or longer. Neglected units often fail in 5 to 7 years. The difference is mostly preventive care, which costs far less than replacing the entire unit.