SERVICE MANUAL SERIES 320 XR - Precisa

Series 320 XRAdjustmentsExample of corner load adjustment:1. The diagonal A-C has the larger difference.2. Place a test weight at point C of the weighingpan. Tare the balance using the TARE-key.3. Move the weight to point A.4. There is a difference of 12 digits betweenpoints A and C (A=12, C=Tare=0).5. The displayed value for point A is reduced byturning the corner load screw 1 above point Ain an anti-clockwise direction → the differencebetween A-C becomes smaller.6. There is a difference of 7 digits between pointsB and D (B=-7, D=Tare=0).7. The displayed value for point B is reduced byturning the corner load screw 2 above point Bin a clockwise direction → the difference betweenB-D becomes smaller.8. The diagonals A-C and B-D should be repeatedlyadjusted until the two diagonals have reachedthe permitted tolerances for corner load→ see “Final check” on page F7.D CZA BBlind plug9. Place a test weight on point Z of the weighing pan, tare balance using the TARE-key.10.Check the points A-B-C-D against the permitted tolerances and correct if necessary.TT+2-2TT1+1-Precisa Gravimetrics AG Index b2 F4