Use and Care Manual

32
9. FLAME SHAPE — Looking into the combustion
chamber through the observation door, the ame should
appear straight with no sparklers rolling up toward the
crown of the chamber. If the ame drags to the right
or left, sends sparklers upward or makes wet spots on
the target wall, the nozzle should be replaced. If the
condition persists look for fuel leaks, air leaks, water
or dirt in the fuel as described above.
10. HIGH ALTITUDE INSTALLATIONS
Air settings must be increased at high altitudes. Use
instruments and set for 11.5 to 12.5% CO
2
.
11. START-UP NOISE — Late ignition is the cause of
start-up noises. If it occurs recheck for electrode
settings, ame shape, air or water in the fuel lines.
12. SHUT DOWN NOISE — If the ame runs out of air
before it runs out of fuel, an after burn with
noise may occur. That may be the result of a faulty
cut-off valve in the fuel pump, or it may be air trapped
in the nozzle line. It may take several ring cycles for
that air to be fully vented through the nozzle. Water in
the fuel or poor ame shape can also cause shut down
noises.
NOTICE
CHECK TEST PROCEDURE. A very good test for
isolating fuel side problems is to disconnect the
fuel system and with a short length of tubing,
re out of an auxiliary ve gallon pail of clean,
fresh, warm #2 oil from another source. If the
burner runs successfully when drawing out of the
auxiliary pail then the problem is isolated to the
fuel or fuel lines being used on the jobsite.
D. ATTENTION TO BOILER WHILE NOT IN OPERATION
1. IMPORTANT:
IF BOILER IS NOT USED DURING WINTER TIME,
IT MUST BE FULLY DRAINED TO PREVENT
FREEZE DAMAGE.
2. Always keep the manual fuel supply valve shut off if
the burner is shut down for an extended period of time.
WARNING
This boiler contains controls which may cause the
boiler to shut down and not restart without service.
If damage due to frozen pipes is a possibility, the
heating system should not be left unattended
in cold weather; or appropriate safeguards and
alarms should be installed on the heating system
to prevent damage if the boiler is inoperative.
3. To recondition the heating system in the fall season
after a prolonged shut down, follow the instructions
outlined in Section IV, Paragraphs A through K.
2. FUEL LEAKS — Any fuel leak between the pump
and the nozzle will be detrimental to good combustion
results. Look for wet surfaces in the air tube, under
the ignitor, and around the air inlet. Any such leaks
should be repaired as they may cause erratic burning
of the fuel and in the extreme case may become a re
hazard.
3. AIR LEAKS — Any such leaks should be repaired,
as they may cause erratic burning of the fuel and in
extreme cases may become a re hazard.
4. SUCTION LINE LEAKS -
Whatever it takes, The Oil Must Be Free of Air. This
can be a tough problem , but it must be resolved. Try
bleeding the pump through a clear tube. There must be
no froth visible. There are various test kits available to
enable you to look at the oil through clear tube. There
must be no froth visible. There are various test kits
available to enable you to look at the oil through clear
tubing adapted to the supply line at the pump tting.
Air eliminators are on the market that have potential.
Also, electronic sight glasses are being used with good
success. At times, new tubing must be run to the tank
or new ttings put on. Just make sure you get the air
out before you leave.
Any air leaks in the fuel line will cause an unstable
ame and may cause delayed ignition noises. Use
only are ttings in the fuel lines.
5. GASKET LEAKS — If 11.5 to 12.5% CO
2
with a #1
smoke cannot be obtained in the breeching, look for air
leaks around the burner mounting gasket, observation
door, and canopy gasket. Such air leaks will cause a
lower CO
2
reading in the breeching. The smaller the
ring rate the greater effect an air leak can have on
CO
2
readings.
6. DIRT — A fuel lter is a good investment. Accidental
accumulation of dirt in the fuel system can clog the
nozzle or nozzle strainer and produce a poor spray
pattern from the nozzle. The smaller the ring rate, the
smaller the slots become in the nozzle and the more
prone to plugging it becomes with the same amount
of dirt.
7. WATER — Water in the fuel in large amounts will stall
the fuel pump. Water in the fuel in smaller amounts
will cause excessive wear on the pump, but more
importantly water doesn’t burn. It chills the ame
and causes smoke and unburned fuel to pass out of
the combustion chamber and clog the ueways of the
boiler.
8. COLD OIL — If the oil temperature approaching the
fuel pump is 40°F or lower poor combustion or delayed
ignition may result. Cold oil is harder to atomize at
the nozzle. Thus, the spray droplets get larger and the
ame shape gets longer. An outside fuel tank that is
above grade or has fuel lines in a shallow bury is a
good candidate for cold oil. The best solution is to bury
the tank and lines deep enough to keep the oil above
40°F.