4-522.4
19
service & trouBlesHooting
remedy
Problem B. Burner motor operates but no oil delivered at nozzle.
1. Oil level below intake line inside supply tank.
1. Fill tank with oil and bleed air from the line.
2. Clogged strainer.
2. Remove and clean strainer.
3. Clogged nozzle.
3. Remove and clean or replace nozzle.
4. Air leak in the intake line.
4. Tighten all fittings in the intake line. Tighten unused intake port plug in the fuel unit. If there are valves in
the line, be sure the valve stems are packed solid and tightened securely.
5. Restricted intake lines (high vacuum).
5. Replace any kinked tubing and check all valves in the intake line.
6. A two pipe system that becomes air bound.
6. Insert by-pass plug if not in place. Prime pump.
7. A single pipe system that becomes air bound.
7. See start-up procedure.
8. Slipping or broken coupling.
8. Tighten or replace coupling.
9. Frozen fuel unit shaft.
9. Return unit to factory.
10. Excessive vacuum.
10. Use next larger tubing size. Too high of a lift. Also see B5.
11. Dirty oil filter cartridge.
11. Replace cartridge.
Problem c. Burner motor operates, delivers oil, but no flame.
1. No spark.
1. Check the ignitor and high tension insulators.
2. Poor atomization of oil.
2. Adjust oil pressure to 130 +/- 2psi for POR100 and 145, 100 +/- 2psi for POR 185, check for oil line
restriction and nozzle defects.
3. Improper electrode setting.
3. Remove firing assembly and adjust.
4. Excessive combustion air.
4. See start-up procedure.
Problem d. Burner starts but flame blows away from nozzle.
1. Excessive combustion air.
1. See start-up procedure.
2. Excessive draft.
2. Adjust draft regulator.
3. Poor atomization of oil.
3. Change nozzle with same capacity.
4. Uneven flame.
4. Change nozzle with same capacity.
remedy
Problem a. no oil flow at nozzle.
1. Oil level below intake line in supply tank.
1. Fill tank with oil. (Bleed air from oil lines.)
2. Clogged strainer or filter.
2. Remove and clean strainer. Replace filter element.
3. Clogged nozzle.
3. Replace nozzle.
4. Air leak in intake line.
4. Tighten all fittings in intake line. Tighten unused intake port plug. Check filter cover and gasket.
5. Restricted intake line (high vacuum reading).
5. Replace any kinked tubing and check any valves in intake line. Check for correct line sizes.
6. A two-pipe system that becomes air bound.
6. Check for and insert by-pass plug. Make sure return line is below oil level in tank.
7. A single-pipe system that becomes air bound.
7. Loosen gauge port plug or easy flow valve and bleed oil for 15 seconds after foam is gone in bleed
hose. Check intake line fittings for tightness. Check all pump plugs for tightness.
8. Slipping or broken coupling.
8. Tighten or replace coupling.
9. Rotation of motor and fuel unit is not the same
9. Install fuel unit with correct rotation.
as indicated by arrow on pad at top of unit.
10. Frozen fuel unit shaft.
10. Return unit to approved service station or factory for repair. Check for water and dirt in tank.
Problem B. oil leak.
1. Loose plugs or fittings.
1. Dope with good quality oil-resistant thread sealer. Retighten.
2. Leak at pressure adj. screw or nozzle plug.
2. Washer may be damaged. Replace washer or O-ring.
3. Blown seal (single-pipe system).
3. Check if by-pass plug has been left in unit. Replace fuel unit.
4. Blown seal (two-pipe system).
4. Check for kinked tubing or other obstructions in return line. Replace fuel unit.
5. Seal leaking.
5. Replace fuel unit.
6. Cover loose.
6. Tighten cover screws or replace damaged gasket.
Problem c. noisy operation.
1. Bad coupling alignment.
1. Loosen fuel unit mounting screws slightly and shift unit in different positions until noise is eliminated.
Retighten mounting screws.
2. Air in inlet line.
2. Check all connections. Use only good flare fittings.
3. Tank hum on two-pipe system and inside tank.
3. Install hum eliminator in return line.
Problem d. Pulsating pressure.
1. Partially clogged strainer or filter.
1. Remove and clean strainer. Replace filter element.
2. Air leak in intake line.
2. Tighten all fittings.
3. Air leaking around cover.
3. Be sure strainer cover screws are tightened securely. Check for damaged cover gasket.
4. High vacuum. Should not exceed 17 inches
4. Closed shut-off valve, clogged filter, kinked tubing, too small on line.
Hg (mercury).
Problem e. low oil pressure.
1. Defective gauge.
1. Check gauge against master gauge, or other gauge.
Problem f. improper nozzle cut-off.
1. Filter leaks.
1. Check face of cover and gasket for damage.
2. Strainer cover loose.
2. Tighten screws on cover.
3. Air pocket cut-off valve and nozzle.
3. Run burner, stopping and starting unit, until smoke and after-fire disappears.
4. Air leak in intake line.
4. Tighten intake fittings. Tighten unused intake port and return plug.
5. Partially clogged nozzle strainer.
5. Clean strainer or change nozzle.
6. Leak at nozzle adaptor.
6. Change nozzle and adaptor.
oil Burner assembly (continued)
Burner fuel unit
