I have been informed by aquatec the pump pressure is set to 160psi in "dead head" condition. This means when there is flow, say around 1000cc/min, the pressure will drop down to ~120-125psi.
In order to reset the pressure to 160psi at 1000cc/min. You need to adjust the set screw (on the pumphead) with an allen key (1/16") as follows:
Wind in the screw (clockwise) until you hear a click. Then re-wind (counter-clockwise) 1 complete turn. This sets the system pressure to 160psi.
Future HFS-6 delivery will have a supplimentary insert in the user manual, instructing the above. Apologise for the noticing this earlier due to some mis-communication between Aquatec and us.
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Richard L
aquamist technical support
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