NCR 74 OFX (7874) - 1. Increasing Load Test; 2. Over-Capacity Test

Chapter 3: Installation 3-21
Aftercalibratingthescale,theaccuracymustbeverifiedtoassureitmeetsthe
governmentrequirements.Thisconsistsofaseriesoffourteststhatmustberuninthe
continuoussequencegiven.
1. IncreasingLoadTest
2. Over‐CapacityTest
3. DecreasingLoadTest
4. ShiftTest
Increasing Load Test
Thistestchecksthescale’saccuracywhenincrementallyaddingweighttothecenter
oftheTopPlate.UseweightsthatcorrespondtotheRealScan74weightfeatures.
24177
Step Weight Feature Add Weight Remove Weight Display Result
1
2
3
4
5
Kilogram 0.100
kg
Pound 0.20 lb
Pound
2.500 kg
5.00 lb
0.10
kg
0.20 lb
Pound
5.000 kg
5.00 lb
Pound
5.000
kg
10.00 lb
Pound
2.500 kg
10.00 lb
0.100 0.000 kg
+
0.20 0.00 lb
+
Kilogram
Kilogram
Kilogram
Kilogram
2.500 0.000 kg
+
5.00 0.00 lb
+
7.500 0.005 kg
+
10.00 0.01 lb
+
15.000 0.005 kg
+
12.500 0.005 kg
+
20.00 0.01 lb
+
30.00 0.01 lb
+

Note: DoNOTremoveanyweightfromtheTopPlatebetweenteststepsunless
directedtodoso.
Over-Capacity Test
Thistestchecksfortheproperindicationfromthescalewhentoomuchweightis
placedontheTopPlate.
Note: ThistestmustimmediatelyfollowtheIncreasingLoadTest;donotremove
anyoftheweightsfromtheprevioustestpriortorunningthistest.
Note: Scalecapacityis30lb
or15kgin0.01lbor0.005kgincrements.