Dosing units require regular inspections and must be disassembled down to the cylinder unit from time to time and cleaned as necessary.
Monthly or even weekly inspections are called for in the event that alkaline, corrosive, or high-concentration reagents are used. If non-problematic reagents are used, then the inspection intervals can be extended to between six and twelve months.
Watch the step-by-step instructions for cleaning the dosing unit.