Grundfos MMS Series User Manual

English (GB)
4
4. Preparation
Fig. 2 Handling of the motor
4.1 Checking of liquid in motor
The submersible motors are factory-filled with a
special FDA-approved, non-toxic liquid which is
frost-proof down to -20 °C.
Refilling of liquid is carried out as described below.
4.1.1 Grundfos MS 402 and MS 4000 submersible
motors
The filling hole for motor liquid is placed in the
following positions:
MS 402: in the bottom of the motor.
MS 4000: in the top of the motor.
1. Position the submersible motor as shown in
fig. 3. 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
(fig. 3) 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
motor.
Torques:
MS 402: 2.0 Nm.
MS 4000: 3.0 Nm.
The submersible motor is now ready for installation.
Fig. 3 Motor position during filling - MS 4000
and MS 402
4.1.2 Grundfos MS 6000 submersible motors
• If the motor is delivered from stock, the liquid
level must be checked before the motor is
installed. See fig. 4.
• In the case of service, the liquid level must be
checked. See fig. 4.
Filling procedure:
The filling hole for motor liquid is placed at the top of
the motor.
1. Position the submersible motor as shown in
fig. 4. 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
(fig. 4) 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
motor.
Torque: 3.0 Nm.
The submersible motor is now ready for installation.
Fig. 4 Motor position during filling - MS 6000
Warning
Before starting work on the product, switch
off the power supply. Make sure that the
power supply cannot be accidentally
switched on.
Warning
To avoid personal injury when handling the
motor, use a strap or a lifting eye and a
crane for lifting.
TM05 9648 4213
Note
The level of the liquid in the motor must be
checked and the motor must be refilled, if
required. Use tap water.
Caution
If frost protection is required, a special
Grundfos liquid must be used to refill the
motor. Otherwise, tap water may be used
for refilling.
TM03 8128 0507TM03 8129 0507
MS 4000 MS 402
45°
www.motralec.com / service-commercial@motralec.com / 01.39.97.65.10

Grundfos MMS Series Specifications

General

Brand	Grundfos
Model	MMS Series
Category	Engine
Language	English