NCR 7870 manual Display Add Weight Remove Weight

5-10 Chapter 5: Calibration

Display	Add Weight	Remove Weight
Ready C-5.00 lb (2.500 kg)	5.00 lb. (2.500 kg)
Ready C-15.00 lb (5.000 kg)	10.00 lb. (2.500 kg)
Ready C-30.00 lb (10.000 kg)	15.00 lb. (5.00 kg)
Ready C-0.00 lb (0.000 kg)		30.00 lb. (10.000 kg)
Ready 0.00 lb (0.000 kg)

Note: Use the same kilogram weights for both 9.995 kg and 13.995 kg scale units.

6.Press Reset/Scale Zero button. Display will indicate Ready C 5.00 lb (or 2.500 kg).

7.Place a 5.00 lb (or 2.500 kg) weight in center of Top Plate.

8.Press Reset/Scale Zero button. Display will indicate Ready C 15.00 lb (5.000 kg).

9.Add a 10.00 lb (2.500 kg) weight in center of Top Plate. Total weight on scale should be 15 lbs. (5.00 kg).

10.Press Reset/Scale Zero button. Display will indicate Ready C 30.00 lb (10.000 kg).

11.Add a 15.00 lb (5.000 kg) weight in center of Top Plate. Total weight on scale should be 30.00 lbs (10.000 kg).

12.Press Reset/Scale Zero button. Display will indicate Ready C 0.00 lb (0.000 kg).

13.Remove all weights.

14.Press Reset/Scale Zero button. Verify display indicates Scale Ready 0.00 lb (0.000 kg).

15.Press and holdReset/ Scale Zero button. Record Cal and Par values.

16.The Cal value should be incremented by one, indicating that a calibration has been performed. The PAr value should remain unchanged.