A&D GP-102K User Manual

 

 83

  Do not disassemble the balance. Contact the local A&D dealer if the balance needs service or repair.   

  Use the original packing material for transportation. 

  Do not use organic solvents to clean the balance. Clean the balance with a lint free cloth that 

is moistened with warm water and a mild detergent. 

  The mass of the internal mass may change due to corrosion or other damage caused by the operating 

environment, or due to aging. Check the internal mass using an external weight periodically. 

 
 

The balance is a precision instrument. When the operating environment or the operating method is 

inadequate, correct weighing can not be performed. Place a sample on the pan and remove it, and 

repeat this several times. If the balance seems to have a problem with repeatability or to perform 

improperly, check as described below. If improper performance persists after checking, contact the 

local A&D dealer for repair. 

 

  Check the balance performance using the self-check function as described in “6-1 Automatic 

Response Adjustment / Self Check Function”. 

  An error display appears when a malfunction is found. 

  Check the balance repeatability using an external weight. Be sure to place the weight in the 

center of the weighing pan. 

  Check the balance repeatability, linearity and calibrated value using external weights with a 

known value. 

 

  Is the weighing table solid enough? 

  Is the balance level? Refer to “3-1 Before Use”. 

  Is the operating environment free from vibration and drafts? 

  Is there a strong electrical or magnetic noise source such as a motor near the balance? 

 

  Is the weighing pan installed correctly? 

  Is the RE-ZERO key pressed before placing a sample on the weighing pan? 

  Is the sample placed in the center of the weighing pan? 

  Has the balance been calibrated using the internal mass (one-touch calibration)? 

 

Has the balance been warmed up for 30 minutes before weighing?