Pipe Connection; Electrical Connection - Grundfos BM Serie Instrucciones De Instalación Y Funcionamiento

6. Pipe connection

The booster modules are fitted with clamp liners for Victaulic/PJE
clamp couplings on the inlet and outlet sides. See fig. 10.
Gap
Pipe system Clamp liners
Fig. 10 Pipe connection using clamp couplings
WARNING
Pressurised system
Death or serious personal injury
- Avoid stress in the pipe system.
Clean Victaulic connections, rubber and pipes, with
freshwater in order to prevent crevice corrosion.
Size Type
BM 4" BM 3A - BM 9
BM/BMhp 6" BM 17 - BM 60
BM 8" BM 30 - BM 46
BM 8" BM 60
BM/BMhp 8" BM 77 - BM 95
BM/BMhp 8" BM 125 - BM 215

7. Electrical connection

The electrical connection must be carried out by an authorised
electrician in accordance with local regulations.
WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.
DANGER
Electric shock
Death or serious personal injury
- Connect the pump to an external main switch
placed close to the pump and to a motor-protective
circuit breaker or a frequency converter.
- It must be possible to lock the main switch in OFF
position (isolated). Type and requirements as
specified in EN 60204-1, 5.3.2.
- The pump must be earthed.
Booster module
Victaulic Gap
coupling [mm]
∅42
1 1/4" 1
∅89
3" 3
∅89
3" 3
∅114
4" 6
∅139
5" 6
∅168
6" 6
The required voltage quality measured at the module terminals is
- 10 %/+ 6 % of the rated voltage during continuous operation
(including variation in the supply voltage and losses in cables).
Check that there is voltage symmetry in the power supply lines,
that is approximately same difference of voltage between the
individual phases. See also section
cable, point 1.
In order for the modules to meet the EC EMC Directive (2014/30/
EU), a 0.47 μF capacitor (in accordance with IEC 384-14) must
always be connected over the two phases to which the
temperature transmitter is connected. See fig. 11.
0.47 μF
0,47 µF
RD = Red
YE = Yellow
BK = Black
Fig. 11 Electrical connection
The electrical connections must be made close to the flange (fig.
12), either by means of a terminal box (figs
termination kit.
Fig. 12 BM/BMhp with terminal box
Note: In case frequency converter operation is wanted. Do not
mount the 0.47 µF capacitor.
BM 4", BM/BMhp 6", BM/BMhp 8"
Direct-on-line
Black
Black :U
M Red
Red :V
Yellow:W Yellow
BK = Black
RD = Red
YE = Yellow
Fig. 13 Wiring diagram, DOL connection
15. Checking of motor and
RD
YE
BK
BM/BMB
13 and 14) or a cable
S
L1
U
P
L2
P
L
L3
Y
9