Conair GB and EMPTY when this key is pressed, Full Wt, This Has Been, Necessary, You To, WT. as

and EMPTY when this key is pressed.

Since the bin, even when empty, weighs about 1300 grams, it is necessary on initial setup of equipment to instruct the controller of the exact tare weight of the empty bin.

Slight drift in the tare or zero weight during day to day operation is normal. All weight calculations automatically compensate for this drift. However, when the bin is empty, if the weight displayed is more than 50 grams above or below zero, then you may wish to reset the electronics to display zero when the bin is empty.

If, when the bin is empty, the weight displayed is greater than 100, or less than -50, (Parameters TH and TL), the dispense cycle will not begin. Instead, the dump valve will repeatedly try to dump any material it thinks is in the bin or will sound the alarm if weight is below -50. If the load cell calibrations have drifted this far, it is absolutely necessary to reset empty bin weight to zero. These minimum and maximum tare weights are set by the TL and TH parameters. See PARAMETERS, TL and TH for more info.

Allow system to be on for at least 5 minutes to allow for warm up of certain components before setting ZERO or FULL weights.

Generally, when zero weight shifts, the full weight reading shifts the same amount. For this reason, resetting the ZERO WT automatically shifts the FULL WT readout by the same amount. Resetting the ZERO weight usually is all that is necessary to also calibrate the FULL weight.

FULL WT.	THIS HAS BEEN			DONE AT THE FACTORY. IT SHOULD NOT BE
(FULL)	NECESSARY		FOR	YOU TO	DO THIS AGAIN.
	ZERO WT. must			be entered before FULL WT. to achieve proper
	calibration.			The FULL WT. key will		not function until you
	have set ZERO			WT. as	described above.
	If you	wish to reset			the controller	for proper full-weight
	scale display, use any known weight					as close to full bin
	weight	as	possible.		Do not exceed 9999 grams. Place this
	weight	in	the	bin and press the FULL WT. key. The display
	will show		five dashes (FUL-----). Now enter the actual
	weight	in	grams of the item you are			weighing.

AGAIN, both FULL WT. and ZERO WT. have been set at the factory. A drift of several grams from these settings is normal and should not be of any concern. Recalibration should be considered only if ZERO is more than 20 grams off or FULL WT. is more than 50 grams off. These errors do not prevent proper proportions from being dispensed. ZERO error is always "tared" for proper weighing of each component. FULL scale error will only cause accumulated totals to be off by the degree of this error. The primary function of the AUTOWEIGH BLENDER is to dispense materials in the proper ratios. Because all components are weighed by the

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