TM 5-4520-244-14
TEMPERATURE SELECTOR VALVE
3.
Turn temperature
selection knob
clockwise as far
2.
Loosen setscrew
as it will go,
on temperature
then turn
indicator knob.
counterclockwise
3 turns.
TEMPERATURE SELECTOR KNOB
SETSCREW
6.
If thermometer does
4.
Start and run
not read 280-degrees plus/
heater until
minus 10-degrees F,
temperature
gage reading
turn temperature
is stable.
selector knob 1/4
Run 5 minutes
turn, to left to
more .
decrease temperature.
Each time allow 5
minutes for temperature
TEMPERATURE INDICATOR
to stabilize.
8.
With temperature at
280 F, set tempera-
7.
When temperature is
ture indicator knob
correct according to
to HIGH and tighten
thermometer in duct,
setscrew.
Turn temp-
compare with
erature selector knob
temperature gage.
until temperature in-
Agreement should be
dicator knob points
within 10-degrees.
t o "l "
. When temper-
Large difference
ature stabilizes,
indicates faulty
thermometer should
temperature gage.
read 150 F plus or
minus 10 F.
Figure 4-12. Temperature Selector Valve Adjustment
4-43
.
I