Wilo IL Instrucciones De Instalación Y Servicio página 22

– Remove mechanical seal (pos. 1.21)from shaft.
– Pull out the coupling (pos. 1.5) with pumpshaft, of
the lantern.
– Carefully clean fitting/seat area of shaft. If the
shaft is damaged it must also be replaced.
– Remove the stationary ring of the mechanical
seal with seal collar from its seat in the lantern
flange, remove the o-ring (pos. 1.14) and clean
the seat areas.
– Press the new stationary ring of the mechanical
seal with seal collar on its seat in the lantern
flange. Use ordinary liquid soap for lubrication.
– Insert new o-ring into the groove on its seat of the
lantern.
– Controll the fitting surface of the coupling, clean
and oil it, if necessary.
– Pre-assemble the two halfs of the coupling with
the distancerings on the pumpshaft. Feed the
pre-assembled coupling-shaft-unit carefully in
to the lantern.
– Push new mechanical seal right onto shaft. Use
ordinary liquid soap for lubrication.
– Refit impeller with plain washer and nut, fix by the
outer impellerdiameter. Handle carefully to save
the mechanical seal.
Observe screw tightening torque
ATTENTION!
regulations (see 7.3).
– Feed the pre-assembled lantern-unit in to the
pumphousing and secure with bolts. Near by, to
avoid demages of the mechanical seal secure
the rotating parts at the coupling.
Observe screw tightening torque
ATTENTION!
regulations (see 7.3).
– Unlock partly coupling screws and open the pre-
assembled coupling slightly.
– Remount the motor by means of suitable lifting
gear and secure the lantern-motor (and adapter-
ring for BL-pumps) connection with bolts.
Observe screw tightening torque
ATTENTION!
regulations (see 7.3).
– Fit the forked spacer (Fig 8, pos. 10) between
coupling and lantern. The spacer must to be
mounted without any distance between lantern,
spacer and coupling.
– Tighten the coupling screws slightly until getting
contact between the halfs of the coupling and
the distancerings inbetween. Afterwards screw
down the coupling equally. The distance bet-
ween coupling and lantern of 5mm will be auto-
matically adjusted by the forked spacer.
Observe screw tightening torque
ATTENTION!
regulations (see 7.3).
- Remove the forked spacer.
- Remount protection cap of the coupling.
- Rewire power leads to motor terminals.
7.2 Motor
The motor bearing does not require any mainte-
nance. Increasing bearing noise and undue vibra-
tions indicate a worn bearing. The bearing or the
complete motor then needs replacing.
Exchange of the motor (Fig. 5, 6, 7):
– Switch off power supply and secure against un-
authorized switching.
– Close isolating valves at both pump ports.
– Lower the pressure of the pump by opening the
air vent plugs (pos. 1.31).
In the event of hot liquids, Beware of
sclading!
– Disconnect wires from motor terminals
– Remove protection cap (pos. 1.32.) of the coup-
ling.
– Disassemble the coupling (pos. 1.5).
– Unscrew the motor fixing-screws (pos. 5) at mo-
torflange and lift the motor off pumphousing by
means of suitable lifting gear. The adapter-ring
for BL-pumps is hereby loosened (Fig. 7, pos. 8).
– Assemble the new motor by means of suitable lif-
ting gear and secure the lantern-motor (and
adapter-ring for BL-pumps) connection with
bolts.
Observe screw tightening torque
ATTENTION!
regulations (see 7.3).
– Controll the fitting surface of the coupling and the
shaft, clean and oil them, if necessary.
– Pre-assemble the two halfs of the coupling with
the distancerings on the shafts.
– Fit the forked spacer (Fig 8, pos. 10) between
coupling and lantern. The spacer must to be
mounted without any distance between lantern,
spacer and coupling.
– Tighten the coupling screws slightly until getting
contact between the halfs of the coupling and
the distancerings inbetween. Afterwards screw
down the coupling equally. The distance bet-
ween coupling and lantern of 5mm will be auto-
matically adjusted by the forked spacer.
Observe screw tightening torque
ATTENTION!
regulations (see 7.3).
– Remove the forked spacer.
– Remount protection cap of the coupling.
– Rewire power leads to motor terminals.
ENGLISH
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