Specifications

44
10. As the unit is filling and heating, inspect the joints at the low water cut off control
(and any joints of other components that were loosened) for signs of leakage.
Probe Type Low Water Cut Off Control - Replacement
The probe type low water cut off control assures that if the water level in the tank drops
to an unsafe level, power will be cut off so that the heating elements will not "burn out".
If the low water cut off is determined to be defective and must be replaced, follow the
detailed procedures below.
1. Follow Steps 1 through 5 of the shutdown procedure (page 19) to take the unit
off-line before attempting to replace the low water cut off control.
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 Unlock the door of the electric control cabinet. Make a sketch of how the wires
from the low water cut control off are connected within the panel.
3. Disconnect the wires leading from the low water cut off control. (See the wiring
diagram(s) supplied with the unit to determine the correct wires to detach.)
4. Remove the low water cut off control from its mounting.
5. Verify the new low water cut off control is the same as the component being
replaced.
6. Mount the new low water cut off control in the same position as the original low
water cut off.
7. Reconnect the wires in the same position from which they were removed from the
original low water cut off control.
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.