Preparation - Grundfos SP Series Installation And Operating Instructions Manual

6.2.2 Pumped liquids
This pump is tested for use with water only. Water
temperature should not exceed rated motor temperature.
SP pumps can withstand water temperatures up to 140 °F
(60 °C). Water temperature exceeding the rated
temperature shortens the lifespan of the motor. Using the
pump with different liquids than water is a customer
responsibility. For drinking water applications, the
temperature must not exceed 86 °F (30 °C).
Submersible pumps are designed for pumping the following liquids:
• clear and cold water that is free of air and gasses
• clean, thin, non-explosive liquids without solid particles or fibers.
Decreased pump performance and life expectancy can occur if the
water is not cold and clear or contains air and gasses.
See the flow velocity table in section Motor cooling requirements.
Flow rate, Q:
0.44 - 1475 gpm (0.1 - 335 m
Head, H: Maximum 2657 ft (810 m)
When the pump is used for pumping water above the rated
temperatures of the motor, pay attention to the minimum water flow
past the motor for cooling. Water temperature that exceeds the
rated temperature shortens the lifespan of the motor.
The pump is highly resistant to the normal corrosive environment
found in some water wells. If water well tests show that the water
has an excessive or unusual corrosive quality, or exceeds the motor
temperature rating, contact Grundfos.

6.3 Preparation

DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply before you start any work
on the product.
‐
Make sure that the power supply cannot be switched
on accidentally.
10
6.3.1 Checking the motor liquid
The MS submersible motors are factory-filled with SML-3 liquid,
which is frost-proof down to -4 °F (-20 °C).
Refill the liquid as described below.
6.3.2 Grundfos submersible motors MS4000 and MS402
The filling hole for the motor liquid is placed in the following
positions:
MS4000: on the side of the motor near the top.
MS402: on the bottom of the motor.
3
/h)
1. Position the pump as indicated in the figure below. Make sure
that the filling screw is 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 as indicated in
the figure below until the liquid runs back out of the filling hole.
4. Replace the screw in the filling hole and tighten securely before
changing the position of the pump.
Torques:
MS4000: 2.2 ft-lbs (3.0 Nm).
MS402: 1.5 ft-lbs (2.0 Nm).
The pump is now ready for installation.
MS4000
Pump position during filling, MS4000 and MS402
Check the level of the 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.
MS402