NOTE For professional and safe dismantling or assembly we
recommend to change the asymmetric lifting hoop of the XFP
against suitable attachment swivels or against the symmetric lifting
hoop version used for VUPX/AFLX versions (part nos. see table).
Only this measure enables to hang the motor unit in a vertical
upright position!
Dismantling of the motor unit
Unscrew the screws (150) and lift off the motor unit carefully with the
aid of an adequately dimensioned hoist.
Observe the total weight of the pump (see name plate)!
Place the motor unit carefully on its side, taking care that it cannot
roll over. Do not place it on the cooling jacket!
Assembly of the motor unit
Clean the surface of the centring seat of the motor unit and the volute
(149).
Insert new o-ring (133).
Bring the motor unit into line to the volute. The marking arrow on the
flange of cooling-/ or oil chamber must be in line with the discharge
flange of the volute.
Lower the motor unit with care.
Fit and tighten the screws (150).
NOTE If the impeller (148) is being changed then care should be
taken that the bottom plate (163) is fitted in such a manner that the
smallest possible gap between the shearing edge of the impeller
and the bottom plate is adjusted.
Dismantling of the impeller
Dismantle the volute.
Dismantling of the impeller (A) = hanging at the hoist
Hang the motor unit in a vertical upright position above a
suitable solid mounting pedestal. Lower the motor unit carefully
so far that the impeller will be supported at the mounting pedestal.
Loosen impeller screw (144) and screw it out together with
securing washers (145).
Remove collar washer (143) together with grooved pin (270).
Raise the motor unit a few cm and withdraw the impeller (146). If
necessary with the aid of two levers.
Dismantling of the impeller (B) = horizontal position
Lift off the motor unit carefully with the aid of an adequately
dimensioned hoist. Place the motor unit carefully on its side, taking
care that it cannot roll over. Do not place it on the cooling jacket!
Remove impeller screw (144) together with securing washers
(145), collar washer (143) and the grooved pin (270).
Withdraw and lift off the impeller (146) from the shaft end e.g. with
the aid of two levers or with an impeller puller at the gap between
the shroud of the impeller and the cooling-/oil chamber.
Assembly of the impeller (AB)
Prior assembling the impeller the shaft end and key (66) should be
cleaned and checked for any damage. Any damaged or worn parts
should be replaced.
Impeller bore and the shaft end should be lightly lubricated with
graphite-grease or a suitable mounting paste.
Fit the key (66) into the motor shaft and push the impeller on the
motor shaft.
Assembly of the impeller (A)
Place the impeller (146) to the mounting pedestal and bring it into line.
Hang the motor unit above the impeller with a hoist.
Bring the shaft end with impeller bore and key with key groove into
line and lower the motor unit with care as far as the stop.
Assembly of the impeller (B)
Push impeller to the shaft.
(AB) Insert collar washer (143) together with the grooved pin (270).
(AB) Screw in the impeller screw (144) together with the two
securing washers (145).
(AB) Tighten the impeller screw (144) with the correct tightening
Lifting devices for XFP-PE assembly
VUPX / AFLX- Lifting hoop: Attachment swivels:
PE4 Part no.: 3 206 2500 M12 Part no.: 1 499 0096
PE5 Part no.: 3 206 2510 M16 Part no.: 1 499 0100
PE6A Part no.: 3 206 2520 M20 Part no.: 1 499 0097
mounting pedestal