Wilo Atmos GIGA-N - Page 21

Installation and electrical connection en
Installation and operating instructions Wilo-Atmos GIGA-N 21
Coupling size DA [mm] S [mm] S2 [mm]
200
200 2 ... 6 6
(“S” for couplings with a spacer and “S2” for couplings with a spacer)
Table5: Permissible gaps S and S2
Coupling size ΔS
perm.
and ΔKr
perm.
[mm]; speed dependent
1500rpm 1800rpm 3000rpm 3600rpm
68
0.20 0.20 0.15 0.15
80
0.20 0.20 0.15 0.15
95
0.20 0.20 0.15 0.15
110
0.20 0.20 0.15 0.15
125
0.25 0.20 0.15 0.15
140
0.25 0.25 0.20 0.15
160
0.30 0.25 0.20 0.20
180
0.30 0.25 0.20 0.20
200
0.30 0.30 0.20 0.20
Permissible shaft displacement ΔS
perm.
and ΔKr
perm.
in mm (during operation, rounded)
Table6: Maximum permissible shaft displacement ΔS
perm.
and ΔKr
perm.
Checking the radial alignment
Fig.13: Checking the radial alignment with a
comparator
▪Firmly clamp a dial gauge to one of the couplings or to the shaft. The piston of the dial
gauge must lie against the crown of the other half-coupling.
▪Set the dial gauge to zero.
▪Turn the coupling and write down the measuring result after every quarter turn.
▪Alternatively, the radial coupling alignment can also be checked with a ruler.
Fig.14: Checking the radial alignment with a
ruler
NOTICE
The radial deviation of the two coupling halves must not exceed the maximum val-
ues found in table “Maximum permissible shaft displacement ΔS
perm.
and ΔKr
perm.
”.
This requirement applies to every operating status – including operating temper-
ature and inlet pressure.
Checking the axial alignment
NOTICE
The axial deviation of the two coupling halves must not exceed the maximum values
found in table “Permissible gaps S and S2”. This requirement applies to every oper-
ating status – including operating temperature and inlet pressure.