Heat Generation - AccuTemp Evolution Service Manual

Water Level Is Filled Too High in the
Steam Chamber - AUTO-FILL
• The Float Ball rises on the Over-Fill
Reed Switch sensor peg until the
magnetic field from the Float Ball is
above the Reed Switch, causing the
Reed Switch to open. This causes
the Control Relay #1 AC coil's voltage
to drop, dis-engaging the relay from
the steamer's
illuminating the High Water (Over-
Fill) Indicator Lamp and sounding the
buzzer.
• The loss of Control Relay #1 will
remove the power signal to the
Contactors control coil, which opens
the contacts and prevents Line Voltage
to the Solid State Relay(s). This stops
the Cast Heater from generating heat.
• (To restart the steamer, open the Drain
Valve to drain the water, until the High
Water (Over-Fill) Indicator Light goes
out. Press the PWR button ON to
restart the start-up procedure.)
SP8026-1909
normal operation;
EVOLUTION ELECTRIC STEAMER

1.2 HEAT GENERATION:

Power Cord Plugged-In & PWR Button
Not Pushed
• Line Voltage comes into the 3
Pole Contactor's L1 - L3 terminals.
(Refer to the unit's
wiring schematics to determine the
wire color to "L" Terminal location.)
• Line Voltage is then taken off of L1
& L2 of the Contactor and applied
to the Transformer, which steps-
down the Line Voltage to 24VAC.
• From the two, 1.25Amp, fuses;
power goes through the Overtemp
Switch, then goes to the Water
Sensor Board, to Control Relay
#1 (CR#1) coil, to the High Water
Overfill Reed Switch (Auto-Fill
Only), to the Control/Keypad Board,
and to Pin 6 of CR#1. Power also
flows through CR#1, Control/
Keypad Board, Water Sensor Board
and Contactor (once the water
level condition is met).
• (The red LED light on the Water
Sensor Board will be flashing
continuously.)
PWR Button Pushed & Low Water
Level Sensor Is Satisfied
• (The red LED light on the Water
Sensor Board will have about a 1
second flash rate.)
• The Water Sensor Control Board's
K2 Relay will close, sending power
to the Contactor's coil; closing the
contacts and allowing Line Voltage
to be sent to the normally open
Solid State Relay(s).
specific
8