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Slide-in unit
9.6.2 Installation of Wilo-CronoNorm-
NLG
Bearing bracket
87
• insert the blocking ring (9.2) and the other packing rings, each offset
by 180°.
• Fix the hexagon head bolts (9.5), bolts (9.6) and hex nuts (9.7), but
don't tighten.
• Install the stuffing box sleeve (13) and the stuffing box gland (12).
• Fix the disk (9.9) and the other hex nuts (9.7).
• Tighten the nuts by hand. The packing rings must not yet be pressed
together. After installation, the shaft should be able to be turned by
hand.
• Screw the housing cover (10) onto the bearing bracket with the inter-
nal hexagon head bolts (15).
For the slide-in unit, see Fig. 18:
• Mount the impeller (2.1) with impeller nut (2.2) on the shaft.
• Mount the protective screen (7.1) with hexagon head bolts (7.2).
See Fig. 17:
• Insert a new housing seal (1.2).
• Carefully insert the slide-in unit into the spiral housing (1.1) and
tighten with the hexagon head bolts (14).
See Fig. 22:
• Fasten the pump base (8.1) with the hexagon head bolt (8.2) and
safety disk (8.3).
For bearing bracket, see Fig. 28:
• Press the roller bearings (6.1 and 6.2) onto the shaft (3.1).
• Push the shaft from the motor side toward the pump side in the bear-
ing bracket until the bearing on the pump side is in the bearing
bracket.For this, when hammering down, place a piece of wood
between the bearing bracket and the bearing on the motor side to
protect the bearing on the motor side.
• Insert a circlip (6.3) in the bearing bracket using circlip pliers.
• Push the shaft further into the bearing bracket. While doing so, push
the circlip into position with the bearing on the motor side until you
hear it snap into the groove in the bearing bracket.
• Fasten the bearing cover (10) with hexagon head bolts (14).
• Push the thrower (6.8) onto the shaft.
• Insert the inner and outer spacer rings (6.4 and 6.5), if present.
• Insert the spring disk (6.6) and mount the lock nut (6.7).
• Fasten the bearing cover (11) with hexagon head bolts (15).
• Insert the key (3.3).
• Fasten the pump base (8.1) with washer (8.3), spring disk (8.4) and the
hexagon head bolt (8.2).
WILO SE 07/2013
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