Cold Room Repairs

We repair all cold rooms and walk in freezers and we carry parts in van stock for many manufactures including:

Foster

Williams

Scandia

Blizzard

Gamko

Hubbard

Cellerator

J&E Hall

Marstair

Qualitair

Interlevin

Mercatus

Reduce repair costs with planned preventative maintenance

Our maintenance schedule

Inspect all plug tops to equipment for correct fuse rating and tightness of connections. Inspect flexible leads for damage.

Examine exterior and interior of cabinet for damage.

Check condition of shelves and supports.

Inspect door seals and catches.

Inspect the fans.

Inspect the vaporiser trays for damage and contamination

Test compressor and or condenser under normal operating conditions.

Check system for refrigerant leaks.

Check expansion valve where fitted.

Clean condenser and blow out under high pressure to clear debris.

Carry out visual inspection of electrical wiring and controls.

Check defrost operation, heaters and drain pipe.

Inspect water flow, drain pan, water treatment facility and sensors for calcium contamination.

Cold rooms & walk in freezers

Most walk in coolers and freezers manufactured today are constructed of foam insulation bonded between two sheets of sheet metal and come equipped with cam locking devices which lock together to construct the box.

The refrigeration systems that operate within the box are generally, remote, standard top mount, side mount or saddle mount.

Refrigeration systems consist of a condensing unit and an evaporation coil. The condensing unit is located outside the walk-in and the evaporator is located inside the walk-in. The compressor compresses the gas to a liquid. The liquid is then pumped through the condensing unit coil while a fan blows outside air through the coil. The gas is condensed to a liquid and is then pumped through a small copper pipe into the walk-in to the evaporator coil. There, through the expansion valve located in the evaporator coil the liquid is allowed to expand back into a gas. The expansion of the liquid to a gas causes a rapid chilling of the evaporator coil. Since heat always flows toward cold, inside the walk-in air is blown across the evaporation coil to let the coil absorb heat from inside the walk-in. The gas is then allowed to exit the walk-in through a larger copper pipe to the condensing unit where it is once again compressed and cooled to a liquid state and returned to the evaporator coil inside the walk-in. This cycle is continually repeated to keep the box cold.

Outdoor coolers and freezer will require weather proofing to help protect against the elements and provide the equipment with longevity and free from breakdowns.

Commercial Refrigeration’s Do’s

Clean up spillages immediately

Clean and check your door seals weekly

Defrost commercial freezers to manufacturers’ instructions

Visually check compressor fans and vents monthly

Clean off filters and grills weekly

Check working temperature monthly

Arrange regular maintenance by a qualified refrigeration engineer. This will keep your equipment in service and validate new equipment warranties

Commercial Refrigeration’s don’t

Allow fans to be obstructed

Slam doors

Chill hot food

Overload the refrigeration unit and prevent the air flow from circulating

Leave the door open