e) Adjust its position so that the inspection hole is on the same side as the flush valve.
f) Tighten the screws in diagonal sequence.
For tightening torque, see Torque values (page 38).
4. Remove the impeller screw:
a) Place the pump horizontally.
b) Lock the impeller in place by inserting a rod through the hole.
c) Remove the impeller screw and the washer.
5. Adjust the impeller:
a) Using a hexagon-bit adapter, turn the adjustment screw clockwise until the impeller
makes contact with the pump housing.
For tightening torque, see Torque values (page 38).
b) Tighten it a further 1/8 turn (45°).
Maintenance
50 Flygt 3153 Installation, Operation, and Maintenance Manual
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