35
STARTING THE MAIN HOPPER DIESEL BURNER AND
SETTING THE TEMPERATURE CONTROLLER
(CONTINUED)
3. TROUBLESHOOTING
a) Check the diesel burner CAD cell to confirm the eye is clean. To clean the CAD cell, wipe the
eye with a clean cloth or a cotton swab. If the CAD cell eye was dirty, attempt to start the burner
by turning the HOPPER toggle switch off/down and on/up and waiting 30 seconds to see if
cleaning the CAD cell allows the burner to ignite. The CAD cell should be replaced semi-annually.
If the eye was clean, proceed to the next troubleshooting step.
b)
NOTICE:
When working on the diesel burner fuel pump never change the factory setting.
Confirm the diesel burner is getting fuel by loosening the bleeder screw located at the base of the
fuel pump. Capture a fuel sample in a clear glass container. Allow the sample to sit at room
temperature for 10 minutes. Regardless of the color, it should be clear -- not cloudy. Cloudy fuel
should be drained from the fuel tank and replaced with a good, known #1 or #2 diesel fuel (or a
combination of kerosene and #1 or #2 diesel fuel mixed at a ratio of 1:1 in cold weather
conditions). Poor quality fuel can prevent the burner from running properly and
CAUSE BURNER
COMPONENT FAILURE
. Clues that fuel is not within the ASTM specs might be a sudden rash of
problems: delayed ignition, smoky fires, appliance sooting and noisy, dirty flames. If fuel was
found to be bad or bio-diesel fuel exceeding B5 was used, attempt to start burner with good diesel
fuel.
NOTICE: The fuel filter is equipped with a water separator that should be emptied whenever
water is visible. The fuel filter should be replaced semi-annually.
If there is not a steady stream of fuel, tighten the bleeder screw and check the following......
1) Make sure the fuel filter it not plugged or frozen by opening the valve at the base of the fuel filter
and confirming liquid flows from the filter. Replace the fuel filter if liquid does not flow when
opening the fuel filter valve.
2) Inspect the coupler in the burner to make sure that the motor is coupled to the fuel pump. If it is
not, replace the coupler.
Remove bleeder screw again and look for a steady stream of fuel. If found, attempt to start burner
by turning HOPPER toggle switch OFF/DOWN then ON/UP and waiting 30 seconds for burner to
ignite. If the burner does not ignite continue to the next troubleshooting step.
