Grundfos MMS submersible motors must be disposed of according to local regulations by using a public or private waste collection service. If this is not possible, contact the nearest Grundfos company or service workshop.
Safety risk related to materials used
- MMS submersible motors contains motor liquid with monopropylene glycol.
- Grinding in SS poses risk of dust with Cr and Ni.
Safety risk related to handling the product
- Electrically burned motors can contain health hazardous substances formed by burning of various insulation materials.
- Motor and motor liquid can contain substances present in the media it has been in (pay attention in case of radioactive media – biological growth etc.)
Disassembly of the product
- Submersible motor can be disassembled into main components using standard tools.
- Shaft can be pressed out of rotor core.
- Rotor core can be recycled by use of shredder technology to separate the different materials, copper or aluminium and electro steel.
|Designation||Name||Material||Special disassembly considerations|
|1||Sand shield + diaphragm||Rubber or SS plate|
|2||Shaft seal||Rubber + SS plate +seal faces in carbon, ceramic or silicon carbide|
|Motor liquid||Monopropylene glycol + water|
|3||NEMA flange||Cast iron or SS casting||Carbon bush (press fit)|
|4||Winding house||Cast iron or SS casting|
|5||Shaft||Shaft extension + N - side in SS, rest in mild steel.|
Balancing rings in mild steel
|Friction welding zones under balancing rings.|
|Rotor core||Lamination – electro steel.|
Copper bars + copper short circuiting rings alternative die cast aluminium
|6||Thrust bearing rotating|
Cast iron + carbon or ceramic ring
|7||Thrust bearing stationary||Carbon shoes|
Mesh - SS 1.4301
Support – cast iron
MMS6; SS casting
MMS12000; brass with vulcanised rubber
|Some contains antimon|
|8||End shield||Cast iron or SS casting|
|9||Stator||Lamination – electro steel|
Winding wire – copper insulated with PVC or PE/PA
Insulation material - polyester
|External bolts and nuts||SS grade|