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Direction of rotation must correspond to the arrow attached or
engraved in the pump.
Check direction of rotation when motor is apart (coupling spacer
dismantled or motor not coupled to pump). If not feasible due to pump
design (pump fitted with rigid coupling) it is necessary to check that
pump shaft turns freely after the test and before final pump start.
To check direction of rotation start motor briefly and check direction of
rotation just before rotation stops. If direction of rotation must be
modified then reverse two phases in motor junction box.
It is possible to change two phases in the control cabinet on motor
starter connections. If this solution is preferred then it will be
necessary to modify the identification of the cables in the electrical
drawings too.
5.2.4
NOISE LEVEL
Noise level of a complete pump set depends on motor type and speed,
on quality and wear of flexible coupling (if concerned), on fluid velocity,
piping design, ... Values given hereafter are only indicative and based on
fan cooled electric motors average noise levels.
The test must be performed on the supplied pump if the noise
level must be certified.
If noise level is higher than 85dBA, personel working in pump area
should wear hearing protections.
Speed
Pump size
maximum
(RPM)
flow [dB]
40
2900
41
2900
45
2900
46
2900
50
2900
51
2900
60
2900
61
2900
63
S2900
65
1450
68
2900
80(-2)
2900
80K
2900
83
2900
85
1450
88
2900
88(210)
2900
100
2900
105
1450
108
2900
120
1450
150
1450
160
1450
170
950
Indicative noise level given in dBA (LpA at 1 m)
5.2.5
CONNECTIONS
Suction flange axis is horizontal and the face is vertical.
Discharge flange axis is vertical and the face is horizontal.
5.2.6
PERMISSIBLE FORCES A ND MOMENTS
No other stress than the one due to fastening of pipe and pump
flanges together should apply. No stress must be applied to pump
casing by the pipe work. A pre-stress may exceptionally be applied to
flanges to compensate a pipe expansion. But in any case the resulting
forces should not exceed values given hereafter :
DN
1''1/2 - 40
2'' - 50
3'' - 80
4'' - 100
6'' - 150
8'' - 200
For
At best
At zero flow
efficiency oint
[dB]
[dB]
71
66
79
66
62
73
71
68
69
66
65
68
75
69
72
68
66
69
72
71
73
67
67
74
85
79
80
64
62
68
87
79
83
85
72
74
79
73
76
89
78
86
68
65
72
94
87
89
90
83
84
88
81
98
83
67
73
86
84
84
78
74
78
84
74
89
81
75
80
83
76
77
F
M
(x, y, z)
t (x, y, z)
(N)
(Nm)
415
208
520
264
520
264
832
416
1040
528
1220
670
Applied forces and moments should not be maximum at the same
time.
5.2.7
SCOPE OF DELIVERY
Pump can be delivered as a complete pump set including electrical
motor, flexible coupling, coupling guard and baseplate. It can be also
delivered without one of those parts. A CE integration certificate is then
supplied.
This instructions and operating manual is part of the pump supply and
should be delivered attached to the pump. If not, ask WILO Customer
department to get it.
ATEX pumps may be delivered with specific instrumentation. Refer
to pump technical datasheet or to acknowledgment of order to
know exhaustive scope of supply.
6
DESCRIPTION AND WORKING PRINCIPLE
6.1 PRODUCT INFORMATION
S pump is a single stage self priming pump. Several variants of
construction are available : close-coupled (without shaft coupling),
Biblock or with ball bearings assembly fitted with elastic coupling.
Close-coupled pumps use a long shaft electric motor. Biblock pumps
accept flanged normalized IEC motor. Other pumps sets use IEC B3
motors. Diesel or gasoline engines can be used for mobile or fixed
installations.
S pumps include an open impeller, wear plate(s) (rear and front wear
plates according to pump size), single mechanical seal and non-return
valve integrated in the suction flange assembly.
Zinc anodes or internal coating with Ceram C0 can be supplied as an
option for specific applications.
[A] Suction flange with integrated non-return valve.
[B] Priming chamber.
[C] Inspection cover.
[D] Drain cover or plug (depending on pump size).
[E] Wear plate(s).
[F] Open impeller.
[G] Lifetime lubricated ballbearings.
[H] Shaft.
[I] Mechanical seal.
[J] Air / liquid separation chamber.
[K] Discharge flange assembly.
ENGLISH
11
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