Source | Procedure | Causes |
Burner | Place the trouble light | Blown fuse |
| between the black and |
|
| white leads to the burner |
|
| motor. No light indicates |
|
| that no power is getting to |
|
| the motor. |
|
Place trouble light between Binding burner blower the black and white leads to wheel
the blower | motor. Light | Sized fuel | pump | |
indicates power to the | ||||
|
| |||
motor and | burner fault. | Defective | burner motor |
Correction
Replacethe fuse.
Turn off power and rotate the blower wheel by hand. If seized, free the wheel or replace the fuel pump.
Replace the motor.
Source | Procedure |
|
| Causes |
|
| Correction |
|
| ||||
Oil Supply | Check | tank gauge or use dip stick. | No oil in tank |
| Fill tank. |
|
|
| |||||
| Coat dip stick with litmus paste and | Water in oil tank |
| If water | depth | exceeds | 1 inch, pump | ||||||
| insert |
| into bottom of tank. |
|
|
| or drain | water. |
|
| |||
| Listen | for | pump whine. |
| Tank | Open valve. |
|
| |||||
Oil Filters & Oil | Listen | for | pump | whine. |
| Oil line filter is plugged | Replace | filter | cartridges. | ||||
Line |
|
|
|
|
|
| Kinks or restriction in oil line | Repair or replace oil line. | |||||
|
|
|
|
|
|
| Plugged | fuel pump strainer | Clean strainer | or replace pump. | |||
| Open |
| bleed valve or gauge port. | Air leak | in oil supply | line | Locate and correct leak. | ||||||
| Start | the burner. No oil | or milky oil |
|
|
| Tighten | all connections. |
| ||||
| indicates | loss or prime. |
|
|
|
|
|
|
|
| |||
Oil Pump | Install pressure | gauge | on pump and | Pump is partially or completely | Replace | pump. |
| ||||||
| read | pressure. | Should | not be less | frozen. No pressure | and the motor |
|
|
|
| |||
| than | 140 psi. |
|
| locks out on overload. |
|
|
|
| ||||
|
|
|
|
|
|
| Coupling | disengaged | or broken - no | coupling. | |||
|
|
|
|
|
|
| 3ressure |
|
|
|
|
|
|
Nozzle | Disconnect | ignition leads. Observe |
| the oil spray (gun assembly must be | |
| removed from unit). Inspect the | |
| nozzle for plugged orifice or carbon | |
| ||
Ignition | Remove gun assembly and inspect | |
Electrodes | electrodes | and leads. |
Ignition | Connect ignition leads to the |
Transformer | transformer. Start burner and |
| observe spark. Check line voltage |
| to transformer primary. |
Fuel pressure too low
Nozzle orifice plugged
Nozzle strainer plugged
Poor or off center spray
Fouled or shorted electrodes
Dirty electrodes and leads
Eroded electrode tips
Improper electrode gap spacing
Improper position of electrode tips
Bad buss bar connection
Cracked or chipped insulators
Cracked or burned lead insulators
Low line voltage
Burned out transformer windings.
No spark or weak spark
Adjust to 100 psi.
Replace nozzle with the same size, spray angle, and spray type.
Clean electrode leads.
Clean electrode tips and reset the gap to 5/32 inches and correctly position tips.
Replace electrode.
Replace electrode leads.
Check voltage at power source. Correct cause of voltage drop or call the power company.
Replace the transformer.
Properly ground the transformer case.
table continued on next page
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505082M 10_5