Honeywell RA117A - Manual (Page 9)

TROUBLESHOOTING AND MAINTENANCE
To cxsmpletely troubleshoot an oil burner installation,
check the burner, ignition transformer, and oil primary
control for proper operation and condition.
To trifithe safety switch, move the safety switch lever
down until the red reset button pops out. Refer to Fig. 9.
The burner wiil not operate until the safety switch is reset
by pushing the red reset button.
TRIP SAFETY SWITCH BEFORE OPERATING BURNER
MAINTENANCE
CAUTION
Tripping the safety switch shuts down the burner but
does not disconnect the power supply. Turn off the
power at the system switch or the circuit breaker
before servicing the control system, burner motor, oil
valve, or ignition to avoid electrical shock.
FIG. 9—TRIPPING AND RESETTING THE SAFETY
SWITCH.
PRELIMINARY STEPS
Before checking the oil primary and cad cell, check out
the following parts of the burner and ignition systems.
Repair or replace controls as indicated.
1. Wiring connections, power supply, and burner motor
fuse. Ensure power is on to the controls, burner motor, and
ignition transformer.
2. Limit switch.
3. Ignition transformer.
4. Electrode gap and position.
5. Contacts between ignition transformer and electrode.
6. Oil pump pressure.
7. Oil tubing to tank.
8. Oil nozzle.
9. Oil supply.
10. Oil filter.
If the system is still not operating properly, check the oil
primary control as instructed below.
CHECK THE OIL PRIMARY CONTROL
CAUTION
Since troubleshooting is done with the system pow­
ered, observe all necessary precautions to prevent
electrical shock or equipment damage.
Equipment Required:
1. Screwdriver
2.0 to 300 Vac Voltmeter
3. Insulated Jumper Wires
4. Hard Surface Card (such as a business card) for
cleaning contacts
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