Replace the Fuel Pump Coupling
Ensure that all electrical power to the boiler is shut off and disconnected before
proceeding. The circuit breaker box or individual circuit breaker should be locked and
tagged out by personnel following this procedure. Remember that the CBL is a wet
environment. Serious injury or death to personnel can result from electrocution if proper
safety precautions are not observed.
Ensure fuel is contained and not allowed to spill or spray into the CBL. Failure to observe
safety precautions may result in a fire, with the possibility of serious injury or death to
Allow the boiler and any associated hot water pipe, tubing or fixtures to cool at least 30
minutes before attempting any repairs. Failure to observe safety precautions may result
in serious injury or death to personnel.
1. Disconnect power by switching circuit breaker No. 22 to OFF.
2. Loosen the screws retaining the motor (Figure 5, Item 3) to the burner (Figure 5, Item 4), and
remove the motor by twisting counter-clockwise.
3. Remove the fuel pump coupling (Figure 5, Item 5).
4. Install the replacement fuel pump coupling (Figure 5, Item 5).
5. Ensure the fuel pump coupling (Figure 5, Item 5) is in place, and install the motor (Figure 5, Item 3).
6. Ensure the motor (Figure 5, Item 3) is secure and tighten the screws retaining the motor.
7. Connect power, bleed fuel pump, and monitor for normal operation.