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CL catridges how do they actually work

Hulleman

Premium Subscriber
Hi,

Another newbie question:
So on my SP-540 and on my XR-640 there is one slot for the CL cartridge. How does that actually work? Does the cleaning fluid run thru all the channels in the heads or where does it actually clean?
Can someone explain how the CL cartridge works? Read about the headwash requiring 8 cartridges on the xr-640, that makes sense. But what does that 1 slot CL cartridge clean?

Thanks!
/Julian
 
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