User Guide

English
Installation and operating instructions Wilo-Stratos GIGA 55
Screw tightening torques
Tab. 2 Screw tightening torques
Part Fig./Item
Screw (nut)
Thread Screw head
Type...
Tightening
torque
lbf.ft ± 10% /
lb.in ± 10%
(Nm ± 10%)
(if not otherwise
specified)
(1 ft = 12 in)
Installation
information
Transport eyes Fig. 7/Item 20 M8 Hexagon socket 0.25 in (6 mm) 15/180 (20)
Motor impeller unit
Fig. 7/Item 3
Fig. 44/Item 3
M12 Hexagon socket 0.4 in (10 mm) 44/528 (60 )
See chap.10.2.1
“Replacing the
mechanical seal” on
page 50.
Lantern
Fig. 7/Item 10
Fig. 44/Item 8
M6
M10
Hexagon socket 0.2 in (5 mm)
Hexagon socket 0.3 in (8 mm)
5/60 (7)
30/360 (40)
Impeller Fig. 7/Item 15
Special
nut
Hexagon head 0.7 in (17 mm) 15/180 (20)
See chap.10.2.1
“Replacing the
mechanical seal” on
page 50. Open-end
wrench, shaft:
0.9 in (22 mm)
Protective plate Fig. 7/Item 18 M5 Hexagon head 0.3 in (8 mm) 3/36 (3.5)
Fan cover Fig. 7/Item 1
Special
screw
Hexagon socket 0.12 in (3 mm)
3
+0.37
/36
+4.44
(4
+0.5
)
Electronic module Fig. 7/Item 22 M5 Hexagon socket 0.16 in (4 mm) 1.5/18 (2)
Module cover Fig. 3 Phillips recessed head PZ2 0.6/7.2 (0.8)
Control terminals Fig. 12/Item 4
Slotted-head screw
0.14 x 0.02 in (3.5 x 0.6 mm)
0.4
+0.07
/
4.8
+0.84
(0.5
+0.1
)
Power terminals Fig. 12/Item 7
Slotted-head screw
SFZ 1-0.02 x 0.14 in
(SFZ 1-0.6 x 3.5 mm)
0.4/4.8 (0.5)
Plugging of the
cable without tools.
Releasing of the
cable with a screw-
driver.
Union nut, cable
lead-throughs
Fig. 2
M12x1.5
NPT
1
/
4
”
NPT
1
/
2
”
NPT
3
/
4
”
Hexagon head 0.6 in (14 mm)
Hexagon head 0.7 in (17 mm)
Hexagon head 0.9 in (22 mm)
Hexagon head 1.1 in (27 mm)
2/24 (3)
4/48 (6)
6/72 (8)
8/96 (11)
M12X1.5 is
reserved for con-
nection line of the
series sensor only