23
Electric Tank Heat Control and High-limit Thermostats
Two thermostats regulate the temperature for wash tanks, final rinse boosters,
and dual rinse electric heaters.
Control thermostats are adjustable from 110ºF to 195ºF.
Turn the thermostat adjusting screw CW to increase the temperature or
CCW to decrease the temperature.
High-limit thermostats are not adjustable. They prevent the electric heaters
from overheating in the event that a control thermostat or some other component
fails.
Wash tank control and high-limit thermostats are located in junction boxes mounted to
the front of the wash tank.
Electric booster control and high-limit
thermostats are located on the base of the
dishwasher adjacent to the booster heaters.
Dual rinse tank control thermostats are
located on the front of the unload-end of the
dishwasher. The high-limit thermostat is a
surface thermostat and is mounted on
the end of the dual-rinse tank.
Basic Service • Electrical
During Normal Operation
• If the water level in a tank falls below the level of the top float, the top float moves
down and its reed switch contacts open.
• When the water level falls below the level of the bottom float, the bottom float moves
down and its reed switch opens.
• The control relay de-energizes. The fill and rinse valve energizes and refills the tank.
• The heat circuit will de-energize until the water level in the tank raises the top float again.
• The bottom float keeps the heat circuit ready as long as the water level is above the level
of the bottom float.
Automatic Fill/Low Water Heat Protection
Dual Float Switches (continued)
To Next Page
Loading...
