PHOENIX Talon - Operation and Service Manual
28
Oil too hot,
causing
vapor
pockets
Or to cold
causing
poor
atomization
a. The viscosity of the oil must be no higher than 80 SSU (Saybolt Seconds
Universal).
b. Use a Viscometer to determine the proper oil temperature to achieve this
viscosity.
NOTE: Every shipment of oil must be individually tested.
c. Check the fuel specifications to verify the vapor point of the fuel
d. For better combustion the viscosity can be lower than 80 SSU; which
means a higher oil temperature is required.
e. Never heat the oil above 10 deg. F below the vapor point of the fuel.
f. Make sure the fuel Is not forming vapor (steam) pockets in the oil
lines.
NOTE: Watch the fuel pressure, the reading will become erratic, if
the lines are vapor locked, or pressure is building.
g. Check the Nozzle/Atomizer to see if it is dirty.
h. Check the Filters and Strainers to see if they are partially blocked.
i. Check the atomizing air pressure to see if it is erratic.
Pull out the Burner Nozzle, arid clean it.
a. Some recycled oil contains non-flammable fluids, hydraulic fluid for
example, and will not burn well or at all.
b. Replace the oil, and purge the fuel lines.
Pressure
switch, or
limit
switch not
energized
a. See the component location drawings for Pressure and Limit Switch
location.
b. Check the Fuel Pressure Switch.
i. Is it energized if not repair or replace it.
ii. Is it plugged, if it is clean replace it,
c. Check the Limit Switch.
a. Check the fuel flow at low fire, set to recommended flow.
b. Check the fuel pressure, set to recommended pressure.
c. Check the Low Atomizing Air Pressure, set to recommended pressure.
Incorrect
fighting
in the
drum
Contact the ASTEC Service, or Engineering Departments, to have ASTEC
personnel check the flights.
Oil not
atomizing
correctly
a. Check nozzle for dirt, clean if required.
b. Check oil viscosity and temperature.
c. Check atomizing oil pressure and flow.
d. Check the Pintel, replace if worn.
e. Check to see if the Atomizer/Pintel Holding Cup is loose.
Oil
atomizer
in
incorrect
position
a. Check for oil build-up on the burner.
NOTE: This does not occur in normal operation (unless the set collars
holding it in place loosen, which sometimes occurs due to vibration).
b. Check the location of the oil nozzle an the burner.
c. If the nozzle is location is too far into the burner, it could cause oil build-up
at low fire.
NOTE: The oil nozzle is factory set and does not need to be removed during
routine maintenance.
Trouble Shooting, Continued:
Flame
stability
problems
on heavy
oil
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