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Fig. 33: Example for a diagonal cut
Slide-in unit
9.7
Screw tightening torques
89
CAUTION! Risk of damage to property!
Danger of damage to the stuffing box sleeve due to improper han-
dling.
• Take suitable precautionary measures to avoid damaging the
stuffing box sleeve.
This way, the required visible gap between the sleeve and packing
ring is established during installation.For installation, pre-pressed
graphite packing rings are to be cut in half by means of two diagonal
cuts provided that the pump is not dismantled (see Fig. 32 / Fig. 33).
See Fig. 27:
• Push the stuffing box gland (5.4) onto the shaft (3.1).
• Insert O-ring (5.13) in the shaft sleeve (5.12).
• Push the shaft sleeve (5.12) onto the shaft.
• Push the blocking ring (5.3) onto the shaft.
• Place the housing cover (4.1) on the bearing bracket (9) and fasten
with the hexagon head bolts (13).
• Insert three packing rings (5.11) in the housing cover (4.1) and push
the blocking ring (5.3) into the pressure cover.
• Insert other packing rings (5.11) in the housing cover.
• After inserting the last packing ring, secure the packing with the
stuffing box gland (5.4). Tighten the hexagon head bolts (5.5) by
hand.
• The packing rings must not yet be pressed together. After installation,
the shaft should be able to be turned easily by hand.
For the slide-in unit, see Fig. 25:
• Mount the impeller (2.1) with impeller nut (2.2) on the shaft.
• Carefully insert the slide-in unit into the spiral housing (1.1) and
tighten with the hexagon head bolts (12).
• Mount the protective screen (7.1) with hexagon head bolts (7.2).
Screw tightening torques:
A
A
A
C
A
Fig. 34: Screw tightening torques
A B
C
A
C
WILO SE 07/2013
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