P-9-TM-457-35 T.O.35C2-3-442-2
TM-07464A-35 TM 5-6115-457-34
while switch 3 set screw will be
7. Set variable speed drive at ap-
turned counterclockwise to decrease
proximately 200 RPM above actuation point
trip point. Switch 3 set screw should
of switch 1. Speed of variable drive must
require adjustment either clockwise
be measured with a tachometer of 1 per-
or counterclockwise (increase or
cent accuracy.
decrease) depending upon where it
actuates.
8. Rotate cap and cover assembly
(6) clockwise until switch 1 actuates. Scribe
1. Perform step a. , 1. above.
this position on body assembly (11) and cap
and cover assembly (6).
2. Turn adjusting screw clockwise
to increase trip point and counterclockwise
9. Rotate cap and cover assembly
to decrease trip point. Set switches to
(6) clockwise an additional 1/16 of an inch
speeds indicated below by changing speed
and lock the three screws.
setting of the test stand motor to a point
midway in the speed band range.
1 0 . Proceed to set trip points of
two remaining switches, step b.
Switch 1- set at 290 to 310 RPM
b. MINOR SPEED ADJUSTMENT.
Switch 2- set at 590-610 RPM for
60 hertz generator sets
and 825-850 RPM, for 400
CAUTION
hertz generator sets.
Too many counterclockwise turns
Switch 3- set at 1200 to 1225 RPM
will remove set screw from lock
nut assembly.
3. Recheck all trip point settings.
4. After all bench adjustments have
NOTE
been made, tighten cover hardware (2 and
3) and install lockwire.
All three switches may be individ-
ually adjusted. Under certain con-
8-52. INSTALLATION.
ditions the adjustment of one switch
may slightly effect the speed setting
Refer to Operator and Organizational
of the other two. Compensating ad-
Maintenance Manual and install overspeed
justments may be required. Switch
switch. Check to be sure reset button has
1 set screw will be turned clockwise
not tripped during installation.
to increase speed to proper trip
8-30 Change 7
