How to extend the life of commercial refrigeration equipment

1. Give it a good place to work

A refrigerator's life is mostly the life of its compressor, and compressors wear fastest when they run hot. Every degree of extra room temperature around the condenser adds to that. Keep units away from fryers, tandoors, ovens and direct sun, leave the ventilation clearance the manufacturer specifies, and make sure the room can get rid of the heat the units produce. In a small, closed space, an exhaust fan can make the difference between a unit that cycles normally and one that never stops.

2. Protect it from bad power

• Use a dedicated, properly earthed socket for each large unit, not extension boards or shared multi-plugs.
• Have the supply voltage measured at peak hours. If it regularly falls outside the unit's rated range, fit a correctly sized stabiliser or voltage protection.
• Use surge protection where storms and grid switching cause spikes.
• After a power cut, let the unit's restart delay protect the compressor; do not switch it on and off repeatedly.
• Run units on generators or inverters only if the supply is rated for the compressor's starting current.

3. Keep the condenser clean

A clean condenser keeps the compressor running cooler and for shorter periods. Set an interval to suit your site — weekly to monthly for most kitchens and shops — and stick to it. This one habit protects the compressor, the condenser fan and your electricity bill.

4. Control door openings and loading

• Plan restocking so doors open once, not repeatedly.
• Load chilled or frozen product only; cool hot food first.
• Do not block internal air vents or the evaporator fan with stock.
• Do not overload shelves beyond their rating, or hang heavy items on doors.
• Use each unit for its job: a chiller is not a freezer, and a display case is not a blast chiller.

5. Fix small faults early

A torn gasket makes the compressor run longer. A weak closer leaves the door ajar. A blocked drain floods the cabinet and eventually corrodes parts. A noisy fan bearing becomes a seized fan that overheats the compressor. None of these is expensive on its own; together, left unfixed, they shorten the unit's life. Train staff to report changes in noise, temperature, ice or water, and act on them within days.

6. Keep it level and handle it gently

Level units so doors seal and water drains, lock castors, and move units upright. A unit dragged across a kitchen, tipped on stairs or switched on immediately after being laid down suffers damage that may only show months later.

7. Schedule professional service

Routine technician visits catch what staff cannot see: rising current draw, a failing fan motor, a controller probe drifting, an early refrigerant leak. Two to four visits a year suit most commercial sites, with one before summer and one before the monsoon. Keep records, so each technician can see the unit's history. For units using hydrocarbon refrigerants, make sure technicians are trained to handle them.

8. Protect against corrosion near the sea

Salt air attacks condenser fins, screws and cabinet steel. In coastal cities, wipe external steel often, clean condensers more frequently, and when buying, ask about corrosion-protected coils and stainless grades. Corrosion is slow, but once fins crumble the condenser cannot be cleaned back to health.

Safety notes

Isolate power before any cleaning near fans, coils or electrical parts. Leave anything involving the sealed refrigeration system, refrigerant or internal wiring to a technician, and on hydrocarbon-refrigerant units, to one trained for flammable refrigerants.