Installation Requirements; Checking The Motor Liquid - Grundfos SP Series Installation And Operating Instructions Manual

5. Installation requirements

DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before starting any work
on the product.
‐
Make sure that the power supply cannot be accidental-
ly switched on.
WARNING
Crushing of feet
Death or serious personal injury
‐
When lifting the pump out of the box, use lifting equip-
ment which is approved for the weight of the product.
‐
Wear personal protective equipment.
WARNING
Crushing of hands
Death or serious personal injury
‐
When lifting the pump out of the box, use lifting equip-
ment which is approved for the weight of the product.
‐
Wear personal protective equipment.
The use of a sine-wave filter is mandatory when operating
an SPE pump set.
Grundfos recommends to fit a 30 cm long pipe to the
pump to facilitate handling of the pump during installation.
Handling of the motor

5.1 Checking the motor liquid

The motors are factory-filled with a special FDA approved non-toxic
liquid which is frost-proof down to -20 °C.
Check the level of motor liquid and refill if required. Use
tap water.
If frost protection is required, special Grundfos liquid must
be used to refill the motor. Otherwise tap water may be
used for refilling; however refill liquid as described below.
8
5.1.1 Grundfos MS4000 and MS402 motors
The filling hole for motor liquid is placed in the following positions:
• MS4000: on the side of the motor near the top
• MS402: in the bottom of the motor.
1. Position the submersible pump as shown in fig. Motor position
during filling - MS4000 and MS402. The filling screw must be at
the highest point of the motor.
2. Remove the screw from the filling hole.
3. Inject liquid into the motor with the filling syringe until the liquid
runs back out of the filling hole. See fig. Motor position during
filling - MS4000 and MS402.
4. Replace the screw in the filling hole and tighten securely before
changing the position of the pump.
Torques
• MS4000: 3.0 Nm.
• MS402: 2.0 Nm.
The submersible pump is now ready for installation.
MS4000
Motor position during filling - MS4000 and MS402
MS402