Technical Data; Storage; Sound Pressure Level; Preparation - Grundfos SQ Installation And Operating Instructions Manual

2. Technical data

Supply voltage:
1 x 200-240 V –10 %/+6 %, 50/60 Hz, PE.
Operation via generator: As a minimum, the
generator output must be equal to the motor P
+ 10 %.
Starting current:
The motor starting current is equal to the highest
value stated on the motor nameplate.
Power factor:
PF = 1.
Motor liquid:
Type SML 2.
Motor cable:
1.5 m, 3 x 1.5 mm², PE.
Liquid temperature:
Maximum 35°C.
Pump outlet size:
SQ 1, SQ 2, SQ 3: Rp 1¼.
SQ 5, SQ 7: Rp 1½.
Pump diameter:
74 mm.
Borehole diameter:
Minimum 76 mm.
Installation depth:
Maximum 150 m below static water level.
See also section 5.8.2 Installation depths.
Net weight:
Maximum 6.5 kg.

2.1 Storage

Storage temperature: –20 °C to +60 °C.
2.1.1 Frost protection
If the pump has to be stored after use, it must be
stored on a frost-free location or it must be ensured
that the motor liquid is frost-proof.
The motor must not be stored without being filled
with motor liquid.

2.2 Sound pressure level

The sound pressure level of the pump is lower than
the limiting values stated in the EC Council Directive
98/37/EC relating to machinery.

3. Preparation

Grundfos MS 3 and MSE 3 submersible motors have
water-lubricated slide bearings. No additional
lubrication is required.
The submersible motors are factory-filled with a
[kW]
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special Grundfos motor liquid (type SML 2), which is
frost-proof down to –20 °C and preserved to prevent
the growth of bacteria.
The level of motor liquid is decisive for the operating
life of the bearings and consequently the life of the
motor.

3.1 Refilling of motor liquid

If for any reason the motor liquid has been drained or
lost, the motor must be refilled with Grundfos motor
liquid SML 2.
To refill the motor, proceed as follows:
1. Remove the cable guard and separate the pump
part from the motor.
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2. Place the motor in vertical position with an
inclination of approx. 10 °.
3. Remove the filling plug using a screwdriver or a
similar tool.
4. Inject motor liquid into the motor with a filling
syringe or the like.
5. To allow possible air to escape, move the motor
from side to side.
6. Refit the filling plug and make sure it is tight.
7. Assemble pump part and motor.
8. Refit the cable guard.
The pump is now ready for installation.
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