Wilo CronoLine-IL Notice De Montage Et De Mise En Service page 57

Installation and operating instructions Wilo-CronoLine-IL, CronoTwin-DL, CronoBloc-BL
Pump type design A/B:
• Dismantle the coupling guard (Fig. 1/2/3/4/5, item 1.32).
• Loosen the coupling screws (Fig. 1/2/3/4/5, item 1.5) on the coupling
unit.
• Loosen the motor fastening screws (Fig. 1/2/3/4/5, item 5) on the
motor flange and lift the drive off the pump with suitable hoisting
gear. On few BL pumps, the adapter ring comes loose (Fig. 3, item 8).
• By loosening the lantern fastening screws (Fig. 1/2/3/4/5, item 4),
dismantle the lantern unit with coupling, shaft, mechanical seal and
impeller from the pump housing.
• Loosen the impeller fixation nut (Fig. 1/2/3/4/5, item 1.11), remove
the conical spring washer (Fig. 1/2/3/4/5, item 1.12) beneath it and
pull the impeller (Fig. 1/2/3, item 1.13) from the pump shaft.
• Dismantle the shim (Fig. 4/5
,
(Fig. 4/5 item 1.43).
• Pull the mechanical seal (Fig. 1/2/3/4/5, item 1.21) off the shaft.
• Pull the coupling (Fig. 1/2/3/4/5, item 1.5) with the pump shaft out of
the lantern.
• Thoroughly clean the sliding/seat surfaces of the shaft. If the shaft is
damaged, it must be replaced.
• Remove the stationary ring of the mechanical seal with the sealing
collar from the lantern flange, as well as the O-ring (Fig. 1/2/3/4/5,
item 1.14) and clean the gasket seats.
Pump type design C:
• Loosen the lantern fastening screws (Fig. 6, item 4) and lift the drive
with lantern unit (coupling, shaft, mechanical seal, impeller) off the
pump with suitable hoisting gear.
• Loosen the impeller fixation nut (Fig. 6, item 1.11), remove the coni-
cal spring washer (Fig. 6, item 1.12) beneath it and pull the impeller
(Fig. 6, item 1.13) from the pump shaft.
• Dismantle the shim (Fig. 6
,
(Fig. 6 item 1.43).
• Pull the mechanical seal (Fig. 6, item 1.21) off the shaft.
• Thoroughly clean the sliding/seat surfaces of the shaft. If the shaft is
damaged, it must be replaced.
• Remove the stationary ring of the mechanical seal with the sealing
collar from the lantern flange, as well as the O-ring (Fig. 6, item 1.14)
and clean the gasket seats.
Installation:
• Press a new mechanical seal stationary ring with collar into the gasket
seat of the lantern flange. A commercially available dishwashing liquid
can be used as a lubricant.
• Install a new O-ring in the groove of the O-ring seat of the lantern.
Pump type design A/B:
• Check the coupling sliding surfaces, if necessary, clean and slightly oil
them.
• Pre-install coupling shells on the pump shaft with shims inserted in
between and insert the pre-assembled coupling/shaft unit carefully
into the lantern.
• Pull a new mechanical seal onto the shaft. A commercially available
dishwashing liquid can be used as a lubricant (if required, insert the
key and the shim again).
• Install the impeller with washer(s) and nut, countering at the impel-
ler's outer diameter while doing so. Avoid damage to the mechanical
seal due to jamming.
• Insert the pre-assembled lantern unit carefully into the pump housing
and screw together. As you do so, hold onto the rotating parts of the
coupling to avoid damage to the mechanical seal.
,
item 1.16) and if required the key
,
item 1.16) and if required the key
English
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