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No shutdown when the tank actually fills — this is the serious one
It fits the AB18 nap brush and the AB36 grout brush
For low moisture encapsulation
they will not transfer to this pump
169-070 Mac Solinoid (Boxxer Maxx CDS) Equipment Maintenance No shutdown when the tankOverview Primary vacuum solenoid valve three way, normally closed, Viton seal, 12 V DC. HydraMaster part number 000 169 070, listed as Valve, Primary Vac. Solenoid. Commonly called the MAC solenoid after its manufacturer. It is a pneumatic control valve, not a water valve. It switches the vacuum or air signal that operates the machine's air cylinders which is why a fault here shows up as something mechanical refusing to move rather than as a leak.
