Grundfos STR2 User Manual

English (GB)
11
5. Electrical installation
Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
1 x 230 V, 50 Hz
1. Strip off the insulation cap and the leads as specified for the
switched spur.
Observe colour coding as follows:
• Brown to terminal L.
• Yellow and green to terminal E (PE).
Ensure that the earth lead is at least as long as the other two
leads.
• Blue to terminal N (neutral).
Fig. 23 Electrical connection
2. Insert the lead fully into the terminal connector and tighten the
screw firmly.
3. Ensure that the connection is secure.
4. Tighten the cable restraint.
Ensure compliance with IEE regulations.
The pump switch should be left in "on" position at all times for
normal operation of the system.
Fig. 24 Electrical supply permanently on
DANGER
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
- The unit must be connected to a switched spur
fused at 5 A (10 A on models STP 4.0 B and STN
4.0 B) with a minimum contact gap of 3 mm in all
poles.
- Metal pipes must be earthed by the use of earthing
clamps and 4 mm
2
earthing wire, according to BS
951.
DANGER
Electric shock
Death or serious personal injury
- Connect the pump to a socket with earth
connection.
- We recommend that you fit the permanent
installation with an earth leakage circuit breaker
(ELCB) with a tripping current ≤ 30 mA.
Complete all pipe installation before making any
electrical connections.
Do not allow any water to enter into the electrical
terminal box.
The electrical installation must be carried out by an
authorised person in accordance with local
regulations.
TM05 7316 1013
Follow the procedure for startup before switching on
the power supply.
DANGER
Electric shock
Death or serious personal injury
- Fit the terminal box cover before you switch on the
power supply.
TM05 7309 0913
ON
NL
L N
Min. 3 mm
1 
I/ON

Grundfos STR2 Specifications

General

Brand	Grundfos
Model	STR2
Category	Water Pump
Language	English