TeeJet ARC-6000 - Manual (Page 18)

98-05017
Rev.- 1
2-8
ARC 6000
CE & S
TANDARD
V
ERSION
Enter this calibration number into the console memory using the procedure that follows.
A. Set the console switches to the following positions:
Power ON
Mode Selector SETUP
Display Selector TOTAL APPLIED
Boom Switches ON (If Split Drive mode is active)
The current Spreader Constant will be displayed.
B. Use the INC/DEC switch to set the display to the calculated Spreader Constant. Remember, the number
cannot be changed when the console is in the Split Drive mode, unless all booms are turned on.
2.6.2.3. RATE SENSOR CALIBRATION
The accuracy of the Spreader Constant should be verified, and adjusted as necessary. The following procedure is suggested
as a relatively simple means of testing the calibration of the spreader constant. BE SURE THE PROPER PRODUCT
DENSITY HAS BEEN ENTERED BEFORE PERFORMING THE CALIBRATION OR THE RESULTS WILL BE
INACCURATE.
A. Set the console switches to the following positions:
Power ON
Mode Selector SETUP
Display Selector TOTAL APPLIED
Boom Switches ON (If Split Drive mode is active)
The display will show the Current Spreader Constant. Record this number for reference.
Turn all booms OFF.
B. Load the vehicle with product of known density. Be sure the density is properly entered in the ARC (Section 2.6.2.1.).
C. Weigh the truck and load and record this weight. Back up to a location where you can safely unload the material
through the conveyor. Be sure the hydraulics are engaged so that there is pressure to the conveyor control valve.
D. Switch the Mode Selector to OPERATE and hold the DEC switch down until the display resets to zero.
E. Rotate the Display Selector to TEST SPEED (be sure an appropriate speed is entered using the INC/DEC switch).
Turn the booms ON and the conveyor will begin to discharge.
F. Discharge enough material to get an accurate measurement but be careful to keep the conveyor running full. As an
example: if the truck scale reads in 20 lb. increments, at least 1000 lbs. must be discharged to be able to calibrate within
1%.
G. When sufficient material has been discharged, turn the booms OFF and rotate the Display Selector to TOTAL AP-
PLIED. ARC displays the Indicated Amount discharged by the conveyor in lbs (or tons over 20,000 lbs.).
H. Weigh the truck and load (be sure the driver's weight is included if he was on the truck when it was weighed the first
time). The difference between the starting weight and the ending weight is the Actual Amount discharged by the
conveyor. (This procedure assumes fuel use is minimal during the test).
I. To adjust the Spreader Constant, use the following formula:
(INDICATED AMOUNT / MEASURED AMOUNT) X CURRENT SPREADER CONSTANT = NEW SPREADER CONSTANT
If the weight read from the console is greater than the weight actually measured, the calibration number will increase.
J. Put the Mode Selector to SETUP and use the INC/DEC switch to change the Spreader Constant. (REMEMBER, IF
SPLIT DRIVE IS ACTIVE, THE BOOM SWITCHES MUST BE ON.) Turn the booms OFF and switch the Mode