Operating
Instructions
28
1096.0833 | CY, CSY, LNY, LSY, NPY, PY, Y, YS Series
05/2011
9.2.7
Ambient conditions
Operation under other ambient conditions has to be agreed
with the manufacturer.
Temperature
[°C]
Relative humidity [%]
Set-up
altitude
above sea
level [m]
long-term
short-term
+5 to +40
≤ 35
≤ 85
≤ 1000
Tab. 27 Ambient conditions
9.2.8
Clearances for heat dissipation
Motor size
Min. clearance between
fan hood and adjacent surface
[mm]
Size 56 - 90
35
Size 100 - 112
55
Tab. 28 Min. clearances for heat dissipation
9.2.9
Tightening torques
9.2.9.1
Screws and nuts
►
Tighten the screws by means of a torque wrench.
The following values apply to new steel screws and nuts.
Size
Property class
Tightening torque
[Nm]
M 5
8.8
5.7
M 6
8.8
9.9
M 8
8.8
25.0
M 10
8.8
51.0
Tab. 29 Tightening torques for screws and nuts
9.2.9.2
For screws in cast-iron casings
►
Tighten the screws by means of a torque wrench.
The following values apply to new screws in cast-iron parts
(brass, aluminium).
Size
Property class
Tightening torque
[Nm]
M 5
8.8
3.2
M 6
8.8
6.0
M 8
8.8
15.0
M 10
8.8
28.0
Tab. 30 Tightening torques for screws in cast-iron parts
9.2.9.3
Stainless steel screws
►
Tighten the screws by means of a torque wrench.
The following values apply to new stainless steel screws
and nuts (A2, A4-70) as well as in stainless steel casings.
Size
Property class
Tightening torque
[Nm]
M 5
A2/A4-70
4.2
M6
A2/A4-70
7.4
M 8
A2/A4-70
17.5
M 10
A2/A4-70
36.0
Tab. 31 Tightening torques for stainless steel screws
9.2.9.4
Screw plugs
The following values apply to new screw plugs in cast-iron
casings (brass, stainless steel).
Size
Tightening torque [Nm]
Brass
Stainless steel
G 1/8 A
5.0
6.5
G 1/4 A
19.7
25.0
Tab. 32 Tightening torques for screw plugs in cast-iron casings
9.2.9.5
Screw fittings with cylindrical external thread,
sealing surface and sealing ring
The following values apply to new screw fittings in cast-iron
casings (brass/stainless steel).
Size
Tightening torque [Nm]
Brass
Stainless steel
G 1/8 A
5.0
6.5
G 1/4 A
19.7
25.0
G 3/8 A
25.3
32.0
G 1/2 A
44.5
46.5
G 3/4 A
50.0
65.0
G 1 A
84.0
107.0
G 1 ¼ A
135.0
171.0
G 1 ½ A
163.0
207.0
Tab. 33 Tightening torques for screw fittings with cylindrical
external thread and sealing surface
9.3 Conical pipe fittings
The above specified tightening torques do not apply to
conical screw-in threads. Here, tightness is not achieved by
using a specific tightening torque but by additional sealing
material (e.g. sealing tape, adhesive).
9.4 Accessories
Accessories included within the scope of supply are listed on the
delivery note.
