Wilo Atmos GIGA-B, Installation And Operating Instructions Manual

Page: 62 / 68

en Maintenance
62 WILO SE 2022-06
9. Loosen the motor fastening screws (Fig. XXV, item 1) on the motor flange and lift
the drive off the pump with suitable hoisting gear (Fig. XXVII).
10. Install the new motor using suitable hoisting gear and screw the connection
between lantern and motor tight (Fig. XXVIII).
NOTICE
For all following work, observe the screw tightening torque specified for the re-
spective thread type (table on screw tightening torques)!
11. Check the coupling and shaft sliding surfaces and, if necessary, clean them.
12. Install the coupling and fasten the mechanical seal (see “Installation” in chapter
“Replacing the mechanical seal” and Fig. XII ... XXI).
13. Install the coupling guard metal sheets (Fig. XXIII).
14. Connect the motor cable.
Always tighten screws diagonally.
Screw connection Tightening torque
Nm ± 10 %
Post Size/tensile strength class
Impeller – Shaft
1)
M20 A2-70 100
Impeller – Shaft
1)
M18 145
Impeller – Shaft
1)
M24 350
Pump housing –
Lantern M16 8.8 100
Pump housing –
Lantern M20 170
Lantern – Motor M16 100
Lantern – Motor M20 170
Coupling
2)
M10 10.9 60
Coupling
2)
M12 100
Coupling
2)
M14 170
Coupling
2)
M16 230
Mechanical seal –
Shaft
3)
M6 7
Mechanical seal –
Lantern M8 8.8 25
Mechanical seal –
Lantern M10 35
Mechanical seal –
Lantern M10 35
Retaining washer –
Impeller shaft M16 60
Retaining washer –
Motor shaft M20 60
Baseplate – Pump
housing
Baseplate – Pump
support foot
Baseplate – Motor
Supporting block –
Pump housing
Supporting block –
Pump support foot
Supporting block –
Motor
M6
M8
M10
M12
M16
M20
M24
10
25
35
60
100
170
350