Sterlco SF1000 Gravimetric Additive Feeder - Manual (Page 36)

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If the "IC" is too low (the IC should be ≥ the
entered Standard Weight) – an alarm: "Cal Error
Gain Too Low" is displayed:
Reasons could be:

The load cell protection device has not been released (see Appendix A)

No standard weight was installed inside the hopper

The load cell is defective (replace it)

The controller is defective (consult your superior)

The standard weight value has not been set, or a wrong value has been set
l) After a few seconds (If the "LC" is O.K.), the system returns to the relevant Main
Screen (see 4.3)
m) Verify that the displayed hopper weight is identical to that of the test weight
n) Take out the test weight from the hopper, and verify that the hopper weight = 0 g
o) The calibration procedure is completed
p) As soon as you return to the Main screen, the hopper will be refilled automatically
(unless Desired MB % = 0).