PHL USER INSTRUCTIONS ENGLISH 00079593
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Page 26 of 31
Place the packing ring [4590.1] on the impeller
screw [2913] with the cut off edge at the bore hole.
Turn the impeller screw to the left by applying the
prescribed torque, see section 6.5. Make sure that
the cut off edge of the packing ring [4590.1]
remains in place.
Lock the impeller screw by knocking the edge of
the impeller screw into the bore hole in the
impeller using a hammer and a centre punch.
Fix the shaft sleeve to the shaft and disengage the
setting plates on top of the mechanical seal cover.
6.9.11 Fitting the diffuser
This procedure describes assembly of the diffuser into
the casing cover.
Clean the surfaces of the diffuser and the casing
cover.
Place the diffuser [1410] on the casing cover.
Make sure that the centring rim is not damaged.
Mount the hexagon head bolts [6577.1] with lock
washers [6541].
Lock the hexagon head screws [6577.1] against
the diffuser using the lock washers [6541].
6.9.12 Fitting the back pull out unit
This procedure describes assembly of the 'back pull
out' unit to the pump casing.
Clean the supporting surfaces of the casing cover
and the pump casing.
Clean internally machined surfaces which come
into contact with liquid and surfaces where
there is only a narrow gap between them and
other finished surfaces. Treat these surfaces
with e.g. Molykote G (spray or paste).
Place a new packing ring [4590.2] onto the rim
of the pump casing.
Attach lifting devices at the appropriate lifting
points. Observe the lifting instructions
described in section 2.3.
Lift the casing cover towards the pump casing
and make sure that the casing cover is in the
correct position in relation to the pump casing.
There is only one way for the casing cover to fit
onto the pump casing.
Carefully place the casing cover on the pump
casing. Work carefully as there is little
clearance between the diffuser and the pump
casing. Also make sure that the centering rim of
the casing cover is not damaged.
Tighten the nuts [6581.1] evenly across the
casing cover by applying the prescribed
tightening torque in accordance with table per
section 6.5.
6.9.13 Fitting other parts
Connect all auxiliary pipes in accordance with
the dimensioned drawing, the “Process and
Instrumentation Diagram” (P ID) or the
“Auxiliary Piping Arrangement Drawing”.
Reconnect the electric motor in accordance
with the instructions for use provided by the
relevant supplier.
Install the coupling between the pump unit and
the electric motor according the suppliers
documentation.
If applicable, renew the gaskets between the
flanges of the piping.
Connect all auxiliary piping according the
general arrangement drawing, the 'Process and
Instrumentation Diagram' (P&ID) or the
'Auxiliary Piping Arrangement Drawing'.
Install the coupling guard on the coupling.
Follow the instructions for putting into operation
as specified in Chapter 5.
Figure: Locking impeller screw
4590.1
4590.1
4590.3
