Installation, care and maintenance
Minor , Major
22
Mount the strainer and the nuts,
tightening torque 22 Nm (16.2 Lbf ft).
N
H
Turn the adjustment screw clockwise until the
impeller makes contact with the suction cover.
Tighten it further 1/8 turn, 45
o
. This will ensure
the correct clearance between the impeller and
the suction cover in the next step.
Lock the impeller with a screw driver or similar
(L= min. 200 mm/7.9 inch), see fig. to prevent
rotation of the impeller. Fit the washer and the
greased impeller screw and tighten, torque to 22
Nm (16.2 lbfft).
Check that the impeller rotates freely.
When changing an impeller or after service, we
recommend that the screw is first tightened to
the prescribed torque and then turned an addi
tional 1/8 ( 45°) of a revolution. The screw will
be loaded to its yield point and the load capacity
of the jonit will be higher.
