The Adey MC3 Cleaner 500ml (MC3C) is a high-performance, highly concentrated chemical cleaner designed to remove sludge, debris, greases and fluxes from central heating systems. It starts working within an hour and can be left in the system for up to 28 days, so it fits both quick jobs and heavily contaminated systems.
MC3 is suitable for all heating systems, contains inhibitors that protect vulnerable metals while cleaning, and can be dosed straight through a MagnaClean filter. It is Part L compliant and compatible with BS 7593 and is used with the ADEY MagnaCleanse for best-practice flushing.
15
Single panel radiators
28 days
Maximum in system
MC3C
Manufacturer part code
Clean first, then protect
Circulate MC3 for at least one hour (up to 28 days), raise the system temperature for faster results, then flush using MagnaCleanse as recommended in BS 7593. Follow with an inhibitor such as ADEY MC1+ Protector.
Check your dose
Adey’s current datasheet states that 500ml treats up to 125 litres or 15 single panel radiators. Some earlier listings for this part code quote 100 litres or 10 radiators, so always calculate the system volume and add further bottles for larger or heavily fouled systems.
Restrictions
Not suitable for single feed indirect (prismatic) cylinders where potable water treatment is required. For open-vented systems, add via the F&E tank after removing enough water through a drain point to draw the cleaner into the circuit.
Handling and storage
Classified as non-hazardous, but as with all domestic chemicals avoid contact with eyes and skin and keep out of reach of children. Store in a cool, well-ventilated area, tightly closed and in the original packaging.
Key features
Removes sludge, debris and fluxes
A rapid-performing chemical cleaner that breaks down magnetite, sludge, greases and fluxes in radiators, pipework and boilers.
Works in an hour
Gets to work within one hour, and can remain in the system for up to 28 days for flexibility on site.
Protects metals while cleaning
Contains inhibitors that protect vulnerable system metals during the cleaning process.
Dose through MagnaClean
Add through the filling loop or a radiator with a suitable injector, or through a MagnaClean filter.
Highly concentrated formula
A 0.4% of system volume dose: 500ml treats up to 125 litres or 15 single panel radiators.
Compliance-ready
Part L Building Regulations compliant and compatible with BS 7593, and compatible with all ADEY chemicals.
Specifications
Product
Product
MC3 Central Heating System Cleaner
Manufacturer part code
MC3C
Product type
Chemical cleaner
Performance and application
Dose
500ml treats up to 125 litres or 15 single panel radiators
System types
All heating systems
Working time
Starts in about 1 hour; maximum 28 days in system
Dosing routes
Filling loop or radiator with injector; MagnaClean filter; F&E tank on open-vented systems
Best practice
Clean and flush as recommended in BS 7593 using MagnaCleanse
Physical and chemical properties
Solubility
Soluble in water
pH (concentrated solution)
6.0 - 7.0
Relative density
1.08 - 1.10 g/cm³
Environmental and quality
Classification
Non-hazardous, non-toxic and biodegradable
Free from
Phosphates, EDTA and nitrates/nitrites
Quality systems
ISO 9001 and ISO 14001
Frequently asked questions
How much MC3 Cleaner do I need?
Adey states that 500ml treats up to 125 litres or 15 single panel radiators. Use further bottles for larger or heavily contaminated systems.
How long should MC3 stay in the system?
Circulate it for a minimum of one hour. It can be left in for up to a maximum of 28 days, and higher system water temperatures improve performance.
How do I dose it?
Through the filling loop or a radiator using a suitable injector, or through a MagnaClean filter. On open-vented systems, dose via the F&E tank after removing enough water at a drain point.
What should I add after cleaning?
Clean and flush as recommended in BS 7593 using ADEY MagnaCleanse, then refill and add an inhibitor such as ADEY MC1+ Protector.
Does it protect system metals?
Yes. MC3 contains inhibitors to protect vulnerable metals during cleaning. It is not suitable for single feed indirect (prismatic) cylinders.
