Fairbanks 3500 Series Yellow Jacket - Manual (Page 13)

Section 3: Scale Installation
11/10 13 51233 Rev. 4
Calibration Steps
Adjust the analog interface instrument to the platform.
 Adjust all the corners to within one (1) division of each other at 25% of
rated capacity.
 Follow the appropriate instrument service manual to ensure a proper calibration.
STEPS
1. Remove the two inside bolts on the side of the scale and remove access panel,
exposing the quick-access potentiometers.
─ Total number of turns is twenty.
2. Identify the platform corner numbers.
3. Place a concentrated weight ( 25% of platform capacity) on
corner #1, then move it to #2, #3 and #4, noting the displayed
reading on each corner.
1
2 3
4
50612-1
1 2 3 4
OPEN OPEN
4 3 2 1 1 2 3 4
OPEN
4
+E SH -S -E +S
3
+E -E +S -S SH
2
-E -S SH +S +E
1
+S -S SH -E +E
TB1 1
RV3 RV4 RV2
1
TB2
RV1
+EXC +SEN -EX
C
-S
E
N
SHLD -S
IG
+SIG
SW1 SW2 SW3
Quick-access
potentiometers
3 4 1 2
Yellow Jacket
summing card
Inside bolts
Outside bolts