Dosing: the heart of wash quality
Incorrect dosing is the root cause of many wash problems. Too much product produces excessive foam and residue; too little prevents effective cleaning. Automatic dosing systems demand regular maintenance.
Impacts
- Laundry that does not come out clean (under-dosing)
- Detergent residue on garments (over-dosing)
- Excessive foam that overflows or causes breakdowns
- Excessive chemical cost
- Premature fibre wear
- Inconsistent results that confuse users
Causes
Peristaltic pumps out of calibration
They lose precision with use. Without regular calibration they over-dose or under-dose.
Blocked or damaged suction tubes
Partial blockages or cracked tubes reduce flow rate.
Undetected empty drums
Without level sensors, pumps run dry and fail to dose.
Incorrect setting for water hardness
Dosing must be adjusted to local water hardness.
Lack of preventive maintenance
Without a programme, equipment deteriorates and loses precision.
Solutions
Monthly calibration with a measuring cylinder
Verify the actual volume delivered by each pump. Adjust where needed.
Install level sensors
They alert when drums are empty, preventing cycles without product.
Replace suction tubes periodically
Peristaltic pump tubes should be replaced every 6–12 months depending on use.
System with telemetry
Lets you monitor and adjust dosing remotely.
Optimised products
Biogold and the Instaquim range are formulated for accurate automatic dosing.
Recommended products
Preventive protocol
- Log each pump's calibration on the 15th of every month
- Note the installation date on each tube and replace at nine months
- Request installation of level sensors with empty-drum alarms
- Visual inspection of connections on every Friday's checklist
- Water hardness test after any works or changes to the mains supply
- Consult Instaquim data sheets for optimum dosing by water type
Looking for a new dosing system or a recalibration?
We install, calibrate and maintain professional dosing systems with optional telemetry.