AccuTemp Evolution - Main Component Information; Key Components Overview

SP8026-1909
EVOLUTION ELECTRIC STEAMER
10
2.0 Main Component Information
Component Part # Purpose
Transformer
Assembly
Part#
AT0A-5076-1
(below SN
52865)
AT0E-2662-7
SN 52866
onwards)
• Steps-down the Supply Line Voltage to 24 -28VAC.
Overtemp Switch
(Thermal Limit
SW3)
AT1E-2653-3
12kW & lower
AT1E-2653-4
13kW & above
• Normally closed switch that provides a safety feature to the
machine in case the Element overheats.
• If the Element overheats, the switch will open and turn the steamer
o; while lighting the red LED Overtemp Light on the Control
Panel.
• The steamer will not turn on until the temperature has dropped
enough to allow the Overtemp Switch to close again.
Control / Keypad
Board
AT0E-3625-
1-RXX (XX is
software revi-
sion)
• Human interface for steamer operations through push-buttons,
operations, & display readouts.
• Provides power to the Solid State Relays
• Receives input from the Temperature (RTD) Sensor and displays the
water temperature on the LED readout.
• Maintains the preset HOLD temperature.
Water Sensor
Control Board
AT0E-3230-2
• Receives inputs from Water Sensor Probes and implements
corresponding actions for those inputs based on the water level in
the steam chamber.
• Controls the Auto-Fill Valve (if installed) and receives inputs that
provides actions for the desired water level needs.
Water Sensor
Probe
AT1E-2652-1
• Teflon exterior with a stainless steel center that uses the minerals in
the water to complete the electrical circuit to the Water Board.
• MUST BE CLEAN TO WORK PROPERLY.
Low Water Level
Probe
• Once the Low Water Sensor is satisfied, it will allow the Main
Contactor to activate.
• If the water level is below the sensor, the Water Board will activate
the Auto-Fill Valve (if installed) filling the unit the water until the
High Limit Water Sensor is satisfied.
High Limit
Water Level
Probe
• On initial chamber water fill, once the water level reaches and
satisfies the Operational Water Sensor, the Water Board will keep
the Auto-Fill Valve open for 30 additional seconds..
• After initial chamber water fill, when the water level drops below
the sensor’s operational level; the Water Board will open the Auto-
Fill Valve for 30 seconds to raise the water level back above the
High Limit Water Sensor.
• This process will repeat as long as the water level stays above the
Low Water Sensor.