REGULAR
ELECTRO-DOSING
In this month’s column, Max Adam, Sales & Marketing Director at RP Adam, turns his attentions to electronic dosing equipment, focussing on three core areas of use and discussing their benefits over manual dispensing systems.
Previous posts have focussed on chemical concentrates and the benefits of businesses moving to these types of products through manual dispensing systems. Here we turn our attention to technologically superior electronic dosing equipment, focusing on three core areas – automatic dish and glass washing, commercial liquid laundry and drain cleaning.
AUTOMATIC DISH AND GLASS
WASHING DOSING UNITS Outside of swimming pools, water treatment and cleaning in place (CIP) industrial cleaning, mechanical dishwashing has the highest volume products which are auto-dosed electronically in the commercial cleaning sphere.
28 | Tomorrow’s Cleaning June 2016
To achieve the best results, most large commercial dish washers are fitted with electronic dosing pumps to automatically dispense two main liquid chemicals: the dish washer detergent (which cleans the dishes) and rinse additive (which helps dry the dishes). Both are metered precisely and consistently into the wash and rinse cycles. Reputable chemical manufacturers who install their own external, wall mounted dosing units usually provide them free-on-loan and will install the equipment and programme the dose rates for their specific chemicals.
There are different types of electronic dosing systems available but most chemical suppliers use timed (or
cyclic) dosing to inject controlled amounts of their products into the wash tanks.
Calculated chemical dose levels are pre-set by the chemical manufacturer to ensure the optimum concentration of chemical is used in each wash cycle, taking into account the capacity of the wash tank and the volume of water added in the rinse cycle. The pumps are then calibrated and the appropriate dose levels programmed into the memory of the dosing unit to ensure that the correct amounts of chemical detergent and rinse aid are added every time.
The other primary method of dosing chemicals into a dishwasher is through the use of inductive or
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