Motor Protection; Connection Of Motor; Installation; General - Grundfos SQ Serie Manual De Instrucciones

5.2 Motor protection

The motor incorporates thermal overload protection
and requires no additional motor protection.

5.3 Connection of motor

The motor incorporates a starter device and can
therefore be connected directly to the mains.
Start/stop of the pump will typically be done via a
pressure switch. See fig. 4.
The pressure switch must be rated for the
Caution
maximum amps of the specific pump size.
N L
P
Fig. 4

6. Installation

6.1 General

Warning
Before starting any work on the pump/
motor, make sure that the power supply
has been switched off and that it cannot be
accidentally switched on.
Do not lower or lift the pump by means of
Caution
the motor cable.
The loose data plate supplied with the pump should
be fixed close to the installation site.
Pressure switch

6.2 Assembly of pump part and motor

To assemble pump part and motor, proceed as
follows:
1. Place the motor horizontally in a vice and tighten
it. See fig. 6.
2. Pull the pump shaft out to the position shown in
fig. 5.
Fig. 5
3. Grease the motor shaft end with the grease
supplied with the motor.
4. Screw the pump part on the motor (55 Nm).
Caution: The pump shaft must engage with the
motor shaft.
A spanner may be used on the clamping faces of
the pump part. See fig. 6.
Fig. 6
Motor (P2)
[kW]
0.70
1.15
1.55
1.85
When pump part and motor have been assembled
correctly, there must not be a clearance between
pump part and motor.
L
156 mm
L
[mm]
120
102
84
66
9