Adjustment on 210/3 skimmer pump

[drehere]

Roger,

I got a 210/3 from your place several years ago. There is a dial on the underneath side of the pump with markings ranging from 200-600.

What would changing this do for me and what should it have been originally set to? It's been rotated now so that I don't know what it was at.

Thanks,
Eric

 

[rvitko]

It should be at full power, on later models it was delivered with the adjustment broken off.