Honeywell Chadwick-Helmuth 8500C Maintenance Manual page 135

A.4.4.3 Test Procedure (P-3 Test Setup)
a. Ensure that only one No. 6 screw is installed above "h" on logo on Calibrator 11A rotor
disk.
b. Set CAM RATE (RPM) switch to 900.
c. Set MOTOR switch to ON.
d. Adjust pot next to 900 CAM RATE switch position until 2nd ring from outside on rotor
disk appears frozen in place under 60 Hz light
e. Press BALANCE key on 8500C/C+.
f. Press SETUP key.
g. Key in 450 with numeric keys in BALANCE FREQUENCY field.
h. On same line, select last number (called "times factor") with arrow keys.
i. Key in x2 as new times factor.
j. Select <AUTO STOP> field with arrow keys.
k. Press CHANGE soft key to select <MAN STOP>.
l. Select PHASE UNITS field with arrow keys.
m. Press CHANGE soft key to select <DEGREES>.
n. Select PICKUP field with arrow keys.
o. Press CHANGE soft key to select PICKUP A.
p. Select INPUT field with arrow keys.
q. Key in 11 with numeric key for #A1 nacelle harness cable.
NOTE: The correlation between P-3 nacelle harness cables and 8520C-36 channels are
shown in the wiring diagram in Figure A-13.
r. Press ENTER soft key.
s. Wait 10 seconds.
t. Press START key.
u. Verify that display indicates:
900±1 RPM
0.4±0.04 IPS
v. Press STOP key.
w. Set CAM RATE (RPM) switch on Calibrator 11A to 1800.
x. Adjust pot next to 1800 CAM RATE switch position until first ring from outside on rotor
disk appears frozen in place under 60 Hz light.
y. Press SETUP key on 8500C/C+.
2
Attention, users outside U.S.: The 11A Calibrator can also be calibrated under 50Hz light. For
1714 rpm and 923 rpm cam rates, inner two rings on rotor disk are used. Remember to enter half
these rates in 8500C/C+ setup screen, when called for in the following steps.
2
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8500C/8500C+ System Maintenance Manual A-13
Maintenance