Specifications

50
Maintenance - Electric Boilers Only
The procedures contained in this section are for components that are only supplied with
CEMLINE Electric Water and Steam Boilers. Maintenance procedures for components
that are not specific to Electric Boilers are contained in the previous section.
Contactor Coils - Replacement
If a contactor coil is determined to be defective and must be replaced, follow the
procedures outlined below.
1. Turn off and lock out the power to the unit.
t The combination of electricity and water can pose a very dangerous situation.
Assure that all power has been shut off / disconnected and locked out in an
approved manner, before attempting any installation or maintenance procedures.
2. After assuring that the power has been turned off and locked out, unlock and open
the electric control cabinet door.
3. Locate the defective contactor coil and tag the connected wires to assure proper
reconnection after the new contactor coil is installed. Disconnect the wires from
the coil.
4. Remove the contactor coil from its mounting.
5. Verify that the new contactor coil is rated the same as the contactor coil being
replaced.
6. Mount the new contactor coil in the same position as the original coil.
7. Replace the wires in the same position from which they were removed from the
original contactor coil.
8. After assuring that all tools and foreign materials have been removed from the
electric control cabinet, and that all personnel are clear of the unit, turn on the
power. As the power is turned on, visually inspect for signs of "arcing". If any
arcing is detected, immediately turn off the power, examine the wires, and assure
the tightness of all connections.
9. If no arcing is detected, the unit is ready for operation.