Thermo Dynamics CWL - Burner Ignition Failure (No Flame)

18
Oil Supply Check tank for oil.
Check for water in oil tank using
a dip stick coated with litmus
paste.
Listen for pump whine.
Oil Line Open pump bleed port and start
and Filter burner. Milky oil or no oil
indicates loss of prime.
Listen for pump whine.
Oil Pump Install pressure gauge in port of
fuel pump. Pressure should be
according to the installer/service-
man labels starting on page 24.
Ignition Connect transformer leads to line
Transformer voltage. Listen for spark. Check
that transformer terminals are not
arcing with buss bars. Check that
transformer is properly grounded.
Ignition Remove and inspect drawer
Electrodes assembly.
Nozzle Check for faulty nozzle.
Inspect nozzle for correct size
and specifications.
Combustion See “Burner Adjustment
Air Instructions” in this manual.
Adjustments
Empty tank.
Water in oil tank.
Fuel supply valve closed.
Air leak in fuel system.
Oil filter plugged.
Plugged pump strainer.
Restriction in oil line.
Pump worn - low pressure.
Motor overloads.
Coupling worn or broken.
Pump discharge pressure set
too low.
No spark or weak spark.
Line voltage below 120V.
Carboned and shorted
electrodes.
Eroded electrode tips.
Incorrect electrode settings.
Cracked porcelain insulators.
Plugged orifice or distributor.
Plugged nozzle strainer.
Poor spray pattern.
Incorrect nozzle installed.
Air shutter open too far.
Air band open too far.
Fill tank.
Strip tank of water exceeding
2" in depth.
Open valve.
Repair leak, using only flared
fittings. Do not use Teflon
tape on oil fittings.
Replace filter cartridge.
Clean Strainer.
Repair oil line.
Replace pump.
Replace coupling.
Set pressure according to the
installer/serviceman labels
starting on page 24.
Replace transformer.
Call utility company.
Clean electrodes.
Replace and reset
electrodes.
Replace and reset electrodes.
Replace nozzle with nozzle
according to the installer/
serviceman labels starting on
page 24.
Install correct nozzle.
Decrease air shutter setting.
Decrease air band opening.
S
OURCE PROCEDURE CAUSES REMEDY
TROUBLE: BURNER STARTS BUT DOES NOT ESTABLISH FLAME
When checking burner adjustments always use instruments.