English (GB)
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2. Delivery and storage
2.1 Delivery
Grundfos submersible motors are supplied from
factory in proper packing in which they should
remain until they are to be installed.
2.2 Unpacking
Do not expose the motor to unnecessary impact and
shocks.
2.3 Storage and handling
Storage temperature
-20 - +70 °C.
Do not expose the motor to direct sunlight.
Storage
Fig. 1 Guideline for stacking of boxes
2.3.1 Frost protection
If the motor is to be stored after use, it must be
stored in a frost-free location, or the motor liquid
must be frost-proof.
3. General description
3.1 Applications
Grundfos MS and MMS submersible motors are
designed according to market standards.
All Grundfos 4", 6" and 8" MS and MMS motors are
designed to fit pump ends manufactured according
to NEMA standards. The motors are ideally suited as
water supply pumps for irrigation, groundwater
regulation, pressure boosting, industrial water
transfer and similar applications.
3.2 Pumped liquids
Clean, thin, non-flammable, non-combustible or non-
explosive liquids not containing solid particles or
fibres.
The maximum sand content of the pumped liquid
must not exceed 50 g/m
3
.
The N, R and RE motor versions are designed for
liquids with higher aggressiveness than drinking
water.
Materials in contact with the liquid:
• MMS: cast iron DIN W.-Nr. 0.6025 and NBR
rubber.
• MMS -N: stainless steel DIN W.-Nr. 1.4401 and
NBR rubber.
• MS/MMS -R: stainless steel DIN W.-Nr. 1.4539
and NBR rubber.
• MS -RE: stainless steel DIN W.-Nr. 1.4539/
1.4517 and FKM rubber.
The maximum liquid temperature appears from
section 4.3 Liquid temperatures/cooling.
3.3 Sound pressure level
The sound pressure level has been measured in
accordance with the rules laid down in the EC
Machinery Directive 98/37/EC.
The sound pressure level of Grundfos MS and MMS
motors is lower than 70 dB(A).
Be careful not to damage the motor cable
with sharp tools when unpacking the
motor.
The separate nameplate supplied with the
motor must be fixed close to the
installation site.
If MMS motors are stored, the shaft must
be turned by hand at least once a month. If
a motor has been stored for more than one
year before installation, the rotating parts
of the motor must be dismantled and
checked before use.
Warning
Do not stack boxes of different lengths.
TM05 9649 4213
The motors are factory-filled with
demineralised water and must therefore be
stored in a frost-free location or emptied
before storage.
www.motralec.com / service-commercial@motralec.com / 01.39.97.65.10
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