Terex - Motor Inspection

• Site conducted

  Select

• Conducted on

  Date

• Prepared by

• Location
  Address

• Issue with the unit

• Photo of unit

  Media

• Name Plate & Overall Unit to be inspected

  Media

General Health Inspection

• Any Discolouration of the Motor?

  Yes

  No

  N/A

• Fan Cowl Intact?

  Yes

  No

  N/A

• Fan Intact And Operational?

  Yes

  No

  N/A

• Fins On Motor All Present And Clean?

  Yes

  No

  N/A

• Any Signs Of Contamination Inside Terminal Box?

  Yes

  No

  N/A

• Does The Motor Shaft Turn Freely By Hand?

  Yes

  No

  N/A

Motor Electrical Tests

• 1. Ensure electrical supply is isolated from motor and locked safely OFF for duration of test!
  2. Remove supply cables to motor - note order for correct re-connection
  3. Remove motor terminal links - note orientation for correct re-connection (Star or Delta)
  (note: if motor Star - Delta starting then there will probably be no links present)
  4. On Fluke meter insert black lead to common port and red lead to insulation port
  5. Set rotary dial to 500V
  6. Carry out test and record as follows (all results are in mOhm):-

• Black Lead - Ground Red Lead To U1

• Black Lead - Ground Red Lead To V1

• Black Lead - Ground Red Lead To W1

• Black Lead - U1 Red Lead V2

• Black Lead - U1 Red Lead W2

• Black Lead - V1 Red Lead U2

• Black Lead - V1 Red Lead W2

• Black Lead - W1 Red Lead U2

• Black Lead - W1 Red Lead V2

• Ensure electrical supply is isolated from cables and locked safely OFF for duration of test!
  
  Disconnect cables from all components at both ends - note order for correct re-connection
  
  On Fluke meter insert black lead to common port and red lead to resistance port
  Set rotary dial to Ω
  Carry out test and record as follows (Results are in Ohms):-

• Black Lead U1 Red Lead U2

• Black Lead V1 Red Lead V2

• Black Lead W1 Red Lad W2

• Does the motor have thermistors?

  Yes

  No

  N/A

• Test resistance of thermistors

  Pass

  Fail

  N/A