A severe problem, difficult to solve. The cleaning of c […]
A severe problem, difficult to solve. The cleaning of conveyor belts!
Over the years, the cleaning of conveyor belts has been a major problem in most plants. Several factors must be considered.
Now I have some tips for you to clean the conveyor belts.
Step 1: Dry Clean
Dry clean the conveyor belt and related equipment by removing large pieces of soil and food from the belt’s surfaces. Also make sure compacted debris is removed from the sprockets, idler wheels and support rails (heretofore referred to as the belt’s support system).
When cleaning the conveyor belt, work in a top-down, inside-edge-of-belt to outside- edge-of-belt, ordered pattern. All subsequent cleaning and sanitizing steps of this procedure are to be completed using this same pattern.
Step 2: Pre-Rinse
Pre-rinse the belt and support system with hot water heated to a temperature of 125 – 130°F (52 – 54°C) and at a pressure of 150 – 300 psi (10 – 20 bar). Care is to be taken that floor drains are kept clear of debris to avoid pooling of water.
Step 3: Apply Detergent
Apply an appropriate foaming detergent mixture to the belt and support system at 150 psi (10 bar). The detergent foam can be allowed to remain on the belt for 10 – 15 minutes, but should not allowed to dry, as dried chemical is often more difficult to completely remove and may support the growth of biofilms.
Step 4: Rinse and Inspect
Flood rinse the belt and support system with 40 – 60 psi (2.8 – 4.1 bar) water at 125 – 130°F (52 – 54°C). After the rinse, inspect the belt and support system components to ensure it is free of soils, water beads, hazes, films and other residue. This inspection should be conducted using sight, touch and smell.
Step 5: Pre-Op the Belt
Verify that all cleaning chemical is removed from the conveyor belt, sprockets, idlers and support rails.
It’s recommended that pH testing be used as an aid in determining that
the belt is free of the detergent. Run the conveyor belt slowly to help dry it and its supports, and remove any pooled water from the floor.
Step 6: Inspect and Release for Sanitizing
Re-inspect the belt and support system using sensory analysis to detect the presence of bacteria. Ashworth recommends adenosine triphosphate (ATP) testing be used to verify absence of bacteria. ATP is present in all animal, vegetable, yeast and mold cells.
Detection of ATP indicates contamination by at least one of these sources. Correct any noted deficiencies detected by ATP testing and re-lubricate the belt and support rails as directed by Ashworth. Release the belt for sanitizing.
Step 7: Sanitizing
Apply the appropriate sanitizers at “no rinse” concentrations, following the manufacturer’s recommendations. Run the belt as the sanitizer is applied in order to
ensure that all parts of the PK Belt and support system have been completely exposed to the chemical. Squeegee any sanitizer that has pooled on the floor into floor drains.