Specifications

Maintenance - Electric Water Heaters and Boilers

The information contained in this section details service and maintenance procedures for

the inspection and replacement of the components of CEMLINE Electric Water Heaters

and Boilers. Remember, this manual serves all CEMLINE Electric Water Heaters and

Boilers. Therefore, the maintenance procedures may be general in some instances.

Where there is a dramatic difference between the procedures pertaining to water heaters

and boilers, it will be noted. When a maintenance procedure pertains to only one unit, it

will also be noted.

If there are any questions concerning maintenance procedures that are not clearly

explained in this manual, contact CEMLINE CORPORATION. Be sure to have the

model and serial numbers of the unit available before making contact.

Note: Many of the maintenance procedures detailed in this section will require the

unit to be taken off-line before the procedure is performed; and put back on-

line after the procedure is completed. It is recommended that the maintenance

personnel performing these procedures review the startup and shutdown

procedures, detailed on pages 17 to 19 of this manual, before attempting any

maintenance procedure.

Any component(s) directly connected or linked to the component being replaced should be

carefully examined before maintenance procedures are started. If any of the related

components show signs of wear or improper operation, they should be considered for

replacement at the same time.

Electric Power Connections - Rewiring and Reconnecting

If any of the power connections must be rewired or reconnected, follow the steps listed

below.

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.

1. Follow Steps 1 through 3 of the shutdown procedure (page 19) to take the unit

off-line before attempting any electrical service.

Note: If none of the electrical components are to be removed, there is no need to

drain the water from the tank. However, if the water is drained from the tank,

be sure the tank is refilled to the point that all heating elements are covered

before turning on the power. Failure to do so will cause the heating elements

to "burn out".