COATS 6200HS Truck Wheel Balancer - Manual (Page 30)

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Coats Model 6200HS
AUTOMATIC CALIBRATION
The Coats Truck Balancer is calibrated by computer
before shipment and should not require recalibration in
normal service. If the P.C.B. assembly or the back panel
assembly is replaced, the balancer should be
recalibrated. Additionally, if balancing results appear to
be irregular, the balancer may require recalibration. The
balancer contains a program for automatic self-
calibration, which can be performed in about the same
time that it takes to balance a single wheel.
Calibration Procedure
Follow this procedure to calibrate your balancer:
1. Fine balance a Wheel.
Balance a wheel in
Fine
resolution to "000" "000" as
explained in the Balancing Operation section. Use a
wheel of the kind and size normally balanced on the
balancer. The wheel must be balanced in the NORMAL
(two-plane clip-on) mode. If the balancer is in the ST ATIC
mode or any of the ALU/MAG modes, the calibration
program will not operate and will display "EEE".
HINT: Use balancing putty or tape to fine balance.
Accurately set the knobs to the dimensions of the wheel.
2. Attaching Calibration Weight.
Rotate the wheel until both outer position arrows and
the top-dead-center indicator light. Attach the Weight
indicated below to the
outer wheel rim
at TDC.
Car/Light Truck 100grams (3.00 ounces)
(Diameter set at or below 17")
Truck 400grams (12ounces)
(Diameter set above 17")
3. Enter the Calibration Program.
Press and hold the Fine button. While holding the Fine
button down, press and hold the Mode Select Button
for 3 to 4 seconds. When the balancer enters the
calibration program, the display will show a flashing
‘ccc’. If the machine displays "eee" then the machine
is not seeing a balance low enough to function. In this
case continue balancing until the reading is "000" "000".