FULTON J Series, Installation, Operation And Maintenance Manual

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JGASUK-IOMM-2015-2
Fulton Ltd
Page 39
MAINTENANCE - 4
Problem Cause Remedy
Burner Cut-off
1. Gas Valve Check filters in the valve block.
Clean as required.
2. Weak Pilot Adjust to larger pilot by adjusting pilot gas pressure
regulator.
3. Faulty Level Control Test level controls, adjust or replace as required.
4. Dirty or defective UV detector Clean or replace.
Poor Combustion
1. Refractory Bricks Check refractories to see if they are blocked with
soot or broken in pieces.
Clean or replace as necessary.
2. Stainless Steel Ring Check the ring is present (40J - 60J models) and fits
tightly against the furnace wall.
3. Main Air Adjustment Check air adjustment. Air/fuel mixture may be off.
Open main air gate until the flame brushes the
furnace wall.
4. Secondary Air Adjustment Check main air adjustment, reset as required and
secure in place.
Check CO
2
and O
2
levels.
5. Draft Check draft with a gauge. Readings will vary
between installations, if in doubt consult Fulton for a
draft value for your system.
6. Dirty Flue Check flue for carbon build-up or blockage.
Clean the flue.
7. Negative Room Pressure Ensure there are no exhaust fans running in the
boiler room.
8. Dirty Fan Check fan for obstructions, clean as required.
Burner Back Fires
1. Refractory Bricks Check refractories to see if they are plugged with
soot (Delayed Ignition) or broken in pieces.
Clean or replace as necessary.
2. Ignition Electrodes Check electrodes for carbon build-up.
Clean as required. Check for proper adjustment,
readjust if necessary.
Check for cracks in porcelain, if found replace the
electrode.
3. UV Detector Check the detector is located correctly and clean.
4. Draft Check draft with a gauge. Draft should be -.05 to
-.10 mbar with the burner off, or -.10 to -.15 mbar
when operating.
A barometric damper may need to be installed.
5. Negative Room Pressure Ensure there are no exhaust fans running in the
boiler room.
6. Air Adjustment Check Air Adjustment settings.
7. Gas Supply Check gas pressure coming into the gas train, if low
contact the gas supplier.
Check the setting on the gas valve regulator, adjust
as required.
4.12.1 TROUBLESHOOTING BOILER
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