NOTE
Heater control is automatic. A cycling switch
reduces fuel flow to LOW when coolant inlet
temperature exceeds 190°F. Fuel flow is returned
to HIGH when temperate falls to 120°F.
Overheat switch shuts off fuel flow when coolant
temperature reaches 245°F.
A Set up fuel control valve as shown.
B
Apply 24 vdc to solenoid leads.
NOTE
Timing must be exact.
C Allow fuel to flow from outlet tube for a few seconds.
D Place graduate under fuel outlet tube and start timing fuel
flow.
E
Remove power from solenoid at end of timing cycle.
F
Weigh fuel in graduate (0.071 ± 0.005 lbs/min).
G If fuel flow is not within tolerance, turn adjusting screw
clockwise to increase rate, or counterclockwise to decrease
rate.
H Repeat steps B-E.
I
Disconnect electrical leads to restriction solenoid and
repeat steps B-E.
J
Adjust for flow rate 0.036 ± 0.005 lbs/min.
TA309835
10-5
TM 9-2350-267-34
