Screw Tightening Torques; Faults, Causes And Remedies - Wilo Atmos GIGA-N Mode D'emploi

9.6.3

Screw tightening torques

A
A C A C A
Fig. 31: Screw tightening torques
10

Faults, causes and remedies

Installation and operating instructions Wilo-Atmos GIGA-N
Faults, causes and remedies
7.2 7.1
Fig. 29: Fitting the slide-in unit
Fig. 30: Inserting the slide-in unit
1. Mark positions of the parts that belong together with a coloured pen or scriber.
2. Mount the impeller disc, impeller (2.1) and key(s) (3.2) on the shaft and tighten
with the impeller nut (2.2).
3. Mount the protective grid (7.1) with interior hexagonal head screws (7.2).
4. Put the slide-in unit down at a safe workplace. To continue dismantling the slide-
in unit, fix it vertically in position with the drive shaft facing downward. The kit
must be removed vertically to avoid damage to the impellers, neck rings and other
parts.
5. Insert a new housing seal (1.2).
6. Carefully insert the slide-in unit into the spiral housing (1.1) and tighten with the
hexagon head screws (14).
B
When tightening the screws, use the following tightening torques.
▪ A (pump)
Thread:
Tightening torque
[Nm]
Table 9: Screw tightening torque A (pump)
▪ B (coupling): Refer to table "Tightening torques for adjusting screws and coupling
C halves" in chapter "Coupling alignment".
▪ C (baseplate): Refer to table "Tightening torques for pump and motor" in chapter
"Alignment of the pump unit".
DANGER
Risk of death due to electrocution!
Improper conduct when carrying out electrical work can lead to death due to electric
shock! Electrical work must be carried out by a qualified electrician in accordance
with the locally applicable regulations.
7.1 7.2 2.2 2.1
1.1 1.2
M8 M10
25 35
3.2 7.2
14
M12 M16 M20
60 100 170
en
M24
350
73