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Installation and operating instructions Wilo-CronoNorm-NL, NLG
31
9.5.3
Dismantling the Wilo-CronoNorm-
NLG
NOTE:
For installation work, please also observe the sectional drawings in
section 11.2 “Spare parts lists, Wilo-CronoNorm-NLG” on page 46
.
Slide-in unit
Slide-in unit:
See Fig. 24:
• Mark positions of the parts which belong together with a coloured
pen or scriber.
• Remove the hexagon head bolts (12) (connection of housing cover
(4.1) and spiral housing (1.1)).
• Pull the pull-out slide-in unit straight out of the spiral housing (1.1) to
avoid damage to interior parts.
• Put the slide-in unit down at a safe workplace.This assembly must be
removed vertically to avoid damage to the impellers, stationary wear
rings and other parts.
• Remove the O-ring (1.2).
See Fig. 25:
• Remove the hexagon head bolts (7.2) and remove the protective
screen (7.1).
• Loosen the impeller nut (2.2).
• Remove the impeller (2.1) and key (3.2).
Fig. 24: Slide-in unit
1.1
1.2
4.1
12
Fig. 25: Slide-in unit
2.2
7.2
7.1
3.2
2.1
9
