Grundfos MG 100LC2 User Manual

11. Fault finding
WARNING
Electric shock
Death or serious personal injury
‐ Before starting fault finding, switch off the power sup-
ply. Make sure that the power supply cannot be acci-
dentally switched on.
‐ Motor service and fault finding must be carried out by
qualified persons.
The table below covers the most frequent faults. Contact Grundfos
if the table does not cover the specific fault.
Fault Cause
Motor does not start.
Power supply disconnected.
Fuses blown.
Automatic circuit breakers cut out.
Motor-protective circuit breaker trip-
ped.
Thermal protection tripped.
Contacts of motor-protective circuit
breaker or magnet coil defective.
Control circuit defective.
Blocked rotor.
Motor defective.
Motor-protective circuit
breaker trips immediately
when supply is switched
on.
A fuse blown.
Contacts of motor-protective circuit
breaker defective.
Blocked rotor.
Cable connection loose or faulty.
Motor winding defective.
Motor-protective circuit breaker set-
ting is too low.
Motor-protective circuit
breaker trips occasionally.
Motor-protective circuit breaker set-
ting is too low.
Mains voltage periodically too low.
Voltage asymmetry
12. Technical data
12.1 Weight
See nameplate or Grundfos Product Center.
12.2 Enclosure class
See nameplate or Grundfos Product Center.
12.3 Dimensional sketches
See A.1. Appendix.
12.4 Sound pressure level
See Grundfos Product Center.
12.5 Winding resistances
See Grundfos Product Center or MG Product Information, PI-052,
section "Technical data".
13. Disposing of the product
This product or parts of it must be disposed of in an environmentally
sound way.
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company or
service workshop.
The crossed-out wheelie bin symbol on a product
means that it must be disposed of separately from
household waste. When a product marked with this
symbol reaches its end of life, take it to a collection
point designated by the local waste disposal authori-
ties. The separate collection and recycling of such
products will help protect the environment and human
health.
See also end-of-life information at www.grundfos.com/product-
recycling.
13
English (GB)

Grundfos MG 100LC2 Specifications

General

Brand	Grundfos
Model	MG 100LC2
Category	Engine
Language	English