Digital Multimeters 
  Maintenance 
21 
General Maintenance 
Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or 
solvents. Dirt or moisture in the terminals can affect readings. 
To clean the terminals: 
1.  Turn the Product off and remove the test leads. 
2.  Shake out any dirt that may be in the terminals. 
3.  Soak a new swab with isopropyl alcohol and work around the inside of each input 
terminal. 
4.  Use a new swab to apply a light coat of fine machine oil to the inside of each terminal. 
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