AccuTemp EEK Service Manual
SERIAL #
MODEL #
EVOLUTION ELECTRIC
MANUAL FOR
EEK
IMPORTANT WARRANTY INFORMATION:
For product warranty activation, the Product Registration Form must be submitted to
AccuTemp Products, Inc. after installation of the appliance.
Product Registration Form
These installation instructions have been prepared for qualied electric equipment
SP8017-1404
installation personnel, who should perform the installation, initial eld start-up and
complete the equipment adjustments described in this manual.
ACCUTEMP PRODUCTS, INC. · 8415 N. CLINTON PARK · FORT WAYNE, IN 46825 · 800.480.0415 · www.accutemp.net
TABLE OF CONTENTS
TABLE OF CONTENTS 1
DOCUMENT HISTORY 1
SAFETY WARNINGS DEFINITIONS 2
INSTALLATION 3-4
OPERATION 5-12
BASIC TROUBLESHOOTING 13
SERVICE INFORMATION 14-39
SCHEMATICS 40-41
SERVICE PARTS 44-57
SERVICE CONTACT INFORMATION 58
WARRANTY STATEMENT 59
DOCUMENT HISTORY
CURRENT
REVISION
1404 4/21/14 1305 4/24/13 Changed document name from ESPEC to
CURRENT
REVISION
1305 5/13/13 1304 4/24/13 Page 44 - Updated graphic- Changed
REVISION DATE PRIOR
1304 4/24/13 1007 7/31/10 Page 6 - Change wire color,
REVISION DATE PRIOR
1007 7/31/10 N/A Initial release of manual
DATE PRIOR
REVISION
DATE PRIOR
REVISION
REVISION
REVISION
DATE CHANGE
EEK
DATE CHANGE
Schematic LT BLU to MED BLU
DATE CHANGE
Page 44 - Updated graphic
Page 49 & 50 - Updated Part Listing
DATE CHANGE
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 1
SAFETY WARNINGS
SYMBOL DEFINITIONS
Symbols are used to attract your attention to possible
dangers. They are only effective if the operator uses
proper accident prevention measures. Some of the
symbols are boxed text, while other maybe just
picture icons. Please give this information the respect
they deserve for safe operation.
WARNING TEXT BOXES
Below are denitions of the warning text boxes:
DANGER
SYMBOLS
Below are the denitions of the symbols used in
the manual
ALERT
Noties the reader of an important message or
warning, usually safety related
Indicates a imminently hazardous situation which,
if not avoided will, result in death or serious
injury
• WARNING
Indicates a potentially hazardous situation which,
if not avoided will, will result in death or serious
injury
CAUTION
Indicates a potentially hazardous situation which,
if not avoided will, will result in minor or moderate
injury
INFORMATION
Noties the reader of an important information.
CAUTION - HOT
CAUTION - HIGH VOLTAGE
NOTE
Advises reader of information or instructions vital
to the operation or maintenance of the equipment
SP8017-1404
EVOLUTION EEK STEAMER
EARTH GROUND
PAGE 2
INSTALLATION
UNPACKING
This appliance was carefully inspected before
shipment from the factory. The transportation
company assumes full responsibility for safe delivery
to the customer until customer acceptance of the
package. Careful inspection of the packaging and the
appliance should be completed before acceptance from
the transportation company.
Only qualied service technicians/electricians should
perform the installation to ensure that all electrical
and safety requirements are met and that all wiring
and plumbing installations is preformed in accordance
with all national, state and local codes.
The installation must conform with local codes, or in
the absence of local codes, with the National Electric
Code.
LOCATION AND PLACEMENT
The appliance must be placed on the AT1A-3780- 1
Steamer Table Assembly which is specially designed
for this application. Clearances must be maintained as
indicated for access to the circuit breaker inside the
power pack and for proper operation of the appliance
See Fig. 1 & Fig 2 for clearance specications.
EQUIPMENT CLEARANCE REAR
7”
Fig 2
CAUTION
This appliance is extremely heavy. For safe
handling, the installer should obtain help
as needed or employ appropriate material
handling equipment to remove appliance
from it’s packaging and move it into its nal
location.
EQUIPMENT CLEARANCE SIDES
1”
SP8017-1404
Fig 1
1”
APPLIANCE LIFTING
Appliances are heavy enough to require
additional manpower or powered assistance
when installed on the stand. This model
Evolution incorporates front and side lifting
handles that must be used to lift the appliance
on to the stand. This table has retaining
brackets that the appliance anged feet must
slide into to secure it to the table. See Fig 3
EVOLUTION EEK STEAMER
Fig 3
LIFTING HANDLES
PAGE 3
INSTALLATION
WARNING
LEVELING
This appliance must be installed in a level condition.
An out of level condition may cause erratic operation
and damage. Damage of this kind is not covered by
the limited warranty.
The appliance is leveled by screwing in and out the
four anged feet while using a spirit level front to
back and left to right.
The anged feet of the appliance are easier to adjust
if they are not interlocked into the retaining brackets
of the EEK table assembly. However it is possible to
adjust if interlocked into the retaining brackets of the
table assembly.
ELECTRICAL REQUIREMENTS
The AccuTemp Evolution Electric appliance has been
designed, manufactured and tested to meet
or exceed the Underwriters Laboratories safety
standards. To ensure safety is maintained in
your installation, it is important that the following
paragraphs are understood before attempting to
apply power to your appliance. If there is any doubt
as to whether your supply receptacle is of the correct
voltage, amperage, or is properly grounded, consult a
qualied electrician or authorized service agent.
POWER REQUIREMENTS
AC power requirements are listed on the data plate
located on the left side access panel on all Evolutions.
This appliance should never be connected to a
circuit operating at more than 150 VAC to ground
and should always be connected to an individual
branch circuit. Make sure the voltage at the supply
receptacle is within ±10% of the voltage listed on
the Evolution data plate. Connection to any other
voltage may permanently damage your appliance or
cause premature component failure. Damage of this
type is not covered under the product warranty. Each
Evolution Electric appliance for EEK comes equipped
with a power pack and an internal breaker that is rated
for the power requirements of each appliance. Damage
caused by removal or modication of the power pack
is not covered by appliance limited warranty.
Only personnel qualied to work with electricity
should install this equipment. Improper
installation can cause personal injury or damage
to the equipment.
ELECTRICAL INSTALLATION
This appliance is designed with a power pack for
connection to a generator or line power. Always turn
the breaker off at the supply side before connecting
power to the appliance. If a generator is to be
used wait until the generator has stabilized before
connecting power. Connect appliance to power and
turn supply side breaker on and turn on Power Pack
breaker at appliance.
Close and secure the Power Pack.
DANGER
This appliance Must be properly grounded, in
accordance with all National, State and local
electrical codes.
GROUNDING INSTRUCTIONS
Grounding provides a path for electric current to
reduce risk of shock. This product is equipped with a
power pack. The power pack must be plugged into a
receptacle that is properly installed and grounded in
accordance with all National, State and local electrical
codes or in the absence of local electrical codes with
the National Electric Code, ANSI/NFPA 70, or the
Canadian Code, CSA C22.2 as applicable. Under no
circumstances shall the plugs grounding prong be cut
or bent to t a receptacle other than the one specied.
Do not use any adapters.
DANGER
Any in-eld modication made that bypass the
safety features of this appliance will result in
serious injury or death.
WARNING
Any in-eld modications made without written
authorization from AccuTemp Products, Inc. will
void all written and oral warranties.
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 4
OPERATIONS
OPERATOR DISPLAY
OPERATING INSTRUCTIONS
& KEYPAD
DOOR LATCH
SIDE LIFT HANDLE
SP8017-1404
DRAIN VALVE
FRONT LIFT HANDLES
ADJUSTABLE FLANGED FEET
FIG 4
EVOLUTION EEK STEAMER
SIDE LIFT HANDLE
PAGE 5
OPERATIONS
POWER PACK
GENERATOR CONNECTION
COVER CAP
CIRCUIT BREAKER
GENERATOR CONNECTION
SP8017-1404
FIG 5
EVOLUTION EEK STEAMER
PAGE 6
OPERATIONS
HRS/MIN/SEC
TIMER
INDICATORS
TIMER
Keypad & Display
INCREASE TIME
DECREASE TIME
COOK/HOLD
DISPLAY
TEMPERATURE
ON/OFF
FIG 6
Warning Indicators
SP8017-1404
FIG 7
EVOLUTION EEK STEAMER
PAGE 7
OPERATIONS
SAFETY WARNINGS
WARNING
When accessing the cooking chamber , be sure to always stand back while slowing opening the door
to allow the chamber to vent off the steam. Never reach into the cooking chamber before it has
completely vented off the steam
Never reach into the cooking chamber or handle hot items without wearing the proper hot gloves.
Steam coming out of the holes on the right side of the cooking chamber are invisible and can cause
severe burns
Never use wet or damp gloves as moisture can conduct heat quickly.
If a cover or covering is used on the cooking pans verify if liquid has accumulated on the top of the
cover or covering. If this has occured use precaution when removing the pan to avoid the liquid
from spilling as it can cause servere burns.
Keep the oor in front of the equipment clean and dry. If spills occur, clean immediately to avoid
potential injuries.
CAUTION
Do not manually ll water above the water level mark on the left side of the cooking chamber.
Do not use abrasive materials, such as wire brushes, metal scouring pads to clean the cooking
chamber bottom.
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 8
OPERATIONS
DAILY PREP:
1. Place 4” full size steam table pan or a 1/1
gastronome pan with a minimum depth of 4”.
2. Close the drain valve
3. Fill with 2 1/2 gallons (9.5 Litres) of tap water.
4. Close Door
5. Press (On/Off) to start the preheat
process.
PREHEATING ( FIG 8)
1. Depress the (On/Off) key to turn on
the appliance. The display will indicate PrE.
2. Once the appliance is preheated to 195° F
the display will indicate COO (Cook Mode)
3. Place your product into the cooking chamber
starting from the top and working your way
from top to bottom until all 6 pans are in place.
Close the door to start the cooking process.
COOKING ( Fig 9 )
1. Depress the key to select the Cook
Mode (COO). Make sure that the appliance
displays
2. Open the door and place food into the
cooking chamber. Loading the pans from top
to bottom until all 6 pans 2 1/2” steam table
pans are in place. Close the door to start the
cooking process. For Partial Loads see Page
11, Fig 12.
Fig 8
Fig 9
3. Timer — Depress the TIMER button and
depress the ARROW keys [▲ or ▼] until the
desired time is displayed. The timer starts
automatically. At the end of the timed cycle, a
beeper will sound.
4. Press the key at any time to display
the current cooking chamber temperature.
SP8017-1404
EVOLUTION EEK STEAMER
NOTE:
The highest cooking temperature with no
product in the appliance is 212 °F(100°C)
at sea level. Higher elevations will decrease
the cooking temperature.
PAGE 9
OPERATIONS
Timed Cooking (Fig 10)
1. Verify that the display reads
2. Depress the key to start the timer in the
default time.
3. To adjust depress the ARROW keys [▲ or ▼]
until the desired time is displayed. The timer
starts automatically and at the end of the timed
cycle a beeper will sound.
4. Press the key to silence the beeper.
To stop the cooking process press the
key until display reads
The food will be held at the default temperature
of 180°F(82.2°C)
Fig 9
HOLDING ( Fig 11 )
In “Hold” the appliance temperature is set for
180° F from the factory. The hold temperature
can be changed to a single value for
temperatures ranging from150° F to 190° F. (See
page 17 for programming this function).
Hold can also be used during downtimes to save
energy and water while keeping the appliance
preheated.
1. Depress the key to select the Hold
Mode
2. Open the door and place food into the
cooking chamber. Shut the door.
3. Food will be held at the preset holding
temperature. The factory default setting is set
at 180° F(82.2°C).
4. Depress the DISP TEMP button to
display the current cooking chamber
temperature.
Fig 10
DISPLAYING TEMPERTURE( Fig 12)
1. Depress the key to display the current
cooking chamber temperature chamber.
SP8017-1404
EVOLUTION EEK STEAMER
Fig 11
PAGE 10
OPERATIONS
PARTIAL LOADS
The Evolution is designed to cook quickly with exceptional pan-to-pan uniformity on full loads of food.
Excellent pan-to-pan uniformity can be achieved with partial loads if the pans are optimally placed in
the appliance. For partial loads using 2½” deep pans, the top position in the appliance is used rst
followed by the second pan placed in third pan position from the top and then the third pan in the fth
pan position from the top. Placing the pans in these positions will optimize the cooking time and panto-pan uniformity. See Fig 13
1st PAN
2nd PAN
3rd PAN
Fig 13
DAILY PREPARATION FOR USE - CONNECTIONLESS MODEL
Preparing the Evolution Connection-Less model for use each day requires very little time and effort.
Simply verify that the appliance is clean, the drain valve is in the closed position and the cooking
chamber is lled with approximately 2½ Gallons of tap water. Close the door and push the ON/Off key
on the keypad. The water level will need to be monitored and lled as required. Do not use the low
water warning lamp as the indicator to check the water level as this can damage the appliance over
time.
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 11
OPERATIONS
CLEANING
The following cleaning instructions are for typical operations. A higer frequency of the weekly cleaning
procedure may be required for high volume users and after protien prepartion. Failure to follow the cleaning
instructions may cause slower cooking times and intermittent operations of the appliance. It is recommended
that the door is left open after cleaning to extend the life of the gasket materials.
MATERIALS REQUIRED
White vinegar
Dishwashing liquid
Non-metalic scrubing pad
5 Gallons tap water
Cleaning towels
High quality stainless steel cleaner and polish.
Warning: Do not use a water jet
or pressure washer to clean the
appliance
DAILY CLEANING
1. Turn the appliance off and wait for the appliance and water reserve to cool.
2. Open the drain valve and allow the cooking chamber to drain completely. Remove the pan rails and
steam collector (Fig 14) Wipe the inside of the cooking chamber, water sensors, pan rails and steam
collector with a clean cloth. Clean the door gasket, inside of door and front face of the cooking chamber.
3. Install the steam collector and pan rails. Once the water in the drain pan has sufciently cooled
empty the drain pan wipe down and replace. Leave the door and drain valve open overnight.
WARNING
4. Clean the exterior with soap and clean tap water and a use a high quality stainless steel cleaner.
WEEKLY CLEANING
1. Close the drain valve and add 1 cup (8 ounces or 0.24 liters) of white vinegar to the cooking chamber
and ll with approximately 2½ Gallons of tap water , shut the door and turn the appliance on.
2. After 15 minutes, turn the appliance off and allow the appliance and water reserve to cool. Open the
drain valve and allow to drain completely.
3. To rinse close the drain valve, ll with approximately 2½ gallons tap water, close the door and turn the
appliance on. Let it run for 15 minutes, turn the appliance off and allow the appliance and water reserve
to cool. Open the drain valve and allow the cooking chamber to drain completely.
4. Remove the pan racks, steam collector and steam distributor for cleaning. Clean the upper and lower
water sensors with a non-metallic cleaning pad. Wipe the inside of the cooking chamber, water sensors,
pan rails (Fig 14),steam distributor front and back (Fig. 14), steam collector top, bottom and sides (Fig.
14).
5. Install the steam collector rst, resting the steam distributor on top of the collector align the retaining
fasteners and hand tighten and then install the pan rails. Once the water in the drain pan has suffently
cooled empty the drain pan and wipe down and replace. Leave door and drain valve open overnight.
Steam Distributor
Pan Rail
Steam Collector
SP8017-1404
Fig 14
EVOLUTION EEK STEAMER
PAGE 12
BASIC TROUBLESHOOTING
WARNING LIGHTS
LOW WATER — The steamer is low on water or
the water sensors need to be cleaned.
HIGH WATER (CONNECTED MODELS ONLY)
Not Utilized on this model
OVER TEMP — The appliance has overheated.
It may have run out of water. Carefully open the
door, allowing steam to escape and then check
the water level in the bottom of the steamer If
it is nearly empty, Clean the water level sensor
probes (white buttons) located in the front left
corner and the wall immediately around them
being careful not to get burned (protective
gloves are strongly recommended). Refill the
steamer with 2 1/2 gallons of tap water and
restart
Food Is Under Cooked
Try using perforated pans as they allow steam
to penetrate from all directions, maximizing
heat transfer and giving you the shortest
cooking times. Try distributing the product
more evenly within the appliance and or pans,
if possible.
Make sure the water drain valve on the front
of the Evolution is tightly closed.
The steamer may appear to be cooking normally
if the valve is slightly open but efciency may
be compromised.
Check the door seal for food debris. Food
debris on the face of the door seal or under ap
may cause steamer to appear to be cooking
normally but efciency may be compromised.
Nicks or cuts in the door seal may also cause
inefcient cooking.
If the steamer has plenty of water, allow it to cool.
This normally takes a few minutes. When the
Over Temp light goes out, restart the steamer.
Food Is Over Cooked
Check that the proper cook time is being used.
Food Is Under Cooked
Make sure you are using adequate time
a. Extra time may be required if pans are
covered or if product is left in plastic bags
or similar packaging.
Make sure the door is closed. When the
door opens the heat is turned off until it
is shut
Make sure the steamer is in the Cook Mode;
Push the Display Temperature button to
ensure the steamer is at the boiling point
of water taking into account your elevation
above sea level. If it isn’t the appliance
maybe in the Hold Mode. Variations
in temperature can also be caused by
frozen product just being put in or with the
connected model a fresh measure of tap
water was activated. These will shortly
come up to temperature as long as the door
is closed.
Steamer won’t come on
Verify that the breaker in the power pack is in
the active position
Verify that the power pack is plugged in
Steamer doesn’t heat
If the operator’s display doesn’t light up, See
section“ Steamer won’t come on”.
Verify the steamer door is closed, as the
heat won’t turn on if the door is open.
Steam comes out the door
Verify that the door is completely closed and
latched.
If the appliance was just lled with water, wait
a minute to see if it stops. After the steamer is
relled with water it is normal for some steam
to come out the door for a brief amount of
time, usually less than one minute.
Steamer Temperature is low
Make sure door is closed
Verify that the low water light isn’t on
Verify the appliance is in the Cook Mode not
the Hold Mode
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 13
SERVICE INFORMATION
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 14
PURPOSE REFERENCE OF MAIN COMPONENTS
Component Part # Purpose
Auto-Fill Valve
(OPTIONAL)
AT1A-3841-1
Reed Switch:
Water Over-Fill
AT0A-3519-2
Sensor Switch
(OPTIONAL)
Float Ball:
AT0P-3233-1
Control Relay #1
(AC)
AT0E-2825-5
Door Switch AT0A-3660-1
S#: 34769 & Up
Chamber
Pressure Switch
AT0E-3617-2
S#: 34768 & Lower
AT1A-3847
• Solenoid Valve that allows water to ow into the steam chamber; that
is controlled automatically by the Water Board based on inputs from
the Water Sensor Probes.
• Magnetic Reed Switch is used in conjunction with a Float Ball. If the
water rises too high, the switch opens and turns off the steamer.
• When the switch opens, the High Water Overll LED will light. The
user will have to drain the water out and turn the steamer back ON;
otherwise, the steamer will remain shutdown.
• Controls AC Volt input & output signals which provide actions from
the Water Sensor Board and Auto-Fill Valve (if installed).
• Magnetic Switch used to ensure that the door is closed and latched
prior to generating steam
• Solid State Relay(s) will not activate if this switch is not closed
(Door Open).
• Normally closed switch that allows pressure to build-up inside the
steam chamber.
• Opens when the steam chamber pressure reaches 1/2 PSI.
• Solid State Relay(S) will not activate if this switch is not closed
(Switch Open).
Solid State Relay AT0E-2059-3
6 KW:
AT1A-3530-1
8 KW:
AT1A-3530-2
10 KW:
Cast Heater
Replacement Kit
AT1A-3530-3
12 KW:
AT1A-3530-4
14 KW:
AT1A-3530-6
17 KW:
AT1A-3530-7
• Provides line voltage to the Cast Heater elements, once the Controller
/Keypad Board sends the 24V control signal to the relay(s).
• The relay(s) are only activated if the Door Switch & Chamber
Pressure Switch are closed.
• The number of Solid State Relays used, depends on the phase and
wattage needs of the unit.
• Transfers the heat, generated from the internal elements; to boil the
water to create steam.
• Cast Heater can be wired to single or 3 phase; and have a parallel,
delta, or wye conguration.
• Cast Heater must be replaced with the same wattage heater as
specied in the model number.
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 15
PURPOSE REFERENCE OF MAIN COMPONENTS
Component Part # Purpose
Contactor
(3 Pole)
AT0E-1587-4
Transformer AT0E-2662-5
12KW & Lower
Overtemp Switch
AT1E-2653-3
(Thermal Limit
SW3)
14KW & Up
AT1E-2653-4
Control / Keypad
Board
Water Sensor
Control Board
AT0E-3625-1
AT0E-3230-2
• Provides line voltage to the Solid State Relay(s), when the contactor’s
coil is closed by the control signal sent from the Water Control Board.
• Provides line voltage to the Transformer.
• Steps-down the Supply Line Voltage to 24 -28VAC.
• Normally closed switch that provides a safety feature to the machine
in case the Cast Heater overheats.
• If the Cast Heater overheats, the switch will open and turn the steamer
off; 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.
• Human interface for steamer operations through push-buttons,
operations, & display readouts.
• Provides power to the Solid State Relay(s) (24VDC).
• Receives input from the Temperature (RTD) Sensor and displays the
water temperature on the LED readout.
• Maintains the preset HOLD temperature.
• 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.
• Teon exterior with a stainless steel center that uses the minerals
Water Sensor
Probe
AT1E-2652-1
in the water to complete the electrical circuit to the Water Control
Board.
• MUST BE CLEAN TO WORK PROPERLY.
• Once the Low Water Sensor is satised, it will allow the Solid State
Low Water Level
Probe
Relay(s) to activate.
• If the water level is below the sensor, the Water Board will activate
the Auto-Fill Valve (if installed) lling the unit the water until the
High Limit Water Sensor is satised.
• On initial chamber water ll, once the water level reaches and
satises the Operational Water Sensor, the Water Board will keep the
Auto-Fill Valve open for 30 additional seconds..
High Limit
Water Level
Probe
• After initial chamber water ll, 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.
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 16
PURPOSE REFERENCE OF MAIN COMPONENTS
Component Part # Purpose
Temperature
(RTD)
Sensor
Door Assembly AT1A-3600-1
Drain Valve AT1P-2239-1
AT0E-3626-1
ADDITIONAL COMPONENT PART NUMBERS
Component Part # Component Part #
Pilot Lamp, 24V Red AT0E-1800-2 Door Hinge (Pair) AT1H-2058-3
Fuse, 1.25A 250V AT0E-2731-2 Door Latch Assy, Ceramic Magnet AT1H-3609-1
• Provides temperature input to Control/Keypad Board, which displays
the temperature in the steam chamber based on resistance changes
from the Temperature (RTD) Sensor.
• Used to maintain the preset HOLD mode temperature.
• Keeps the steam trapped inside the steam chamber to allow pressure
to build and cycle the Chamber Pressure Switch.
• Manually Open/Close valve used to drain water from the steam
chamber.
Gasket, Door AT1G-2633-1 Door Latch Mounting Plate AT1M-3046-1
Inner Door Assembly AT1A-3647-1
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 17
SEQUENCE OF OPERATION
INDICATORS AND WATER CONTROL BOARD OPERATION:
PWR Button Pushed & Water Level Is Below the Low Water Level Sensor
• The Low Water Light Indicator will be ON and Alarm will sound.
• PRE is displayed on the Control/Keypad Board.
• (The red LED light on the Water Sensor Board will be ashing continuously.)
PWR Button Pushed & Low Water Level Sensor Is Satised
• The Low Water Light Indicator and Alarm (only manual ll units use an alarm for low water
condition), will be OFF.
• This is minimum water level needed for the Contactor to close and turn the Cast Heater ON.
• (The red LED light on the Water Sensor Board will have about a 1 second ash delay.)
CAST HEATER GENERATING HEAT OPERATION:
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
specic 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 Overll Reed
Switch (Auto-Fill Only), to the Control/Keypad Board, and to Pin 6 of CR#1. Power also
ows 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 ashing continuously.)
PWR Button Pushed & Low Water Level Sensor Is Satised
• (The red LED light on the Water Sensor Board will have about a 1 second ash 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).
• The Control/Keypad Board will send a 24VAC signal to the Solid State Relay(s); closing the
Relay(s) (as long as the Door Switch and the Chamber Pressure Switch are closed).
• The Solid State Relay(s) then pass Line Voltage to the Cast Heater’s Elements generating
heat evenly over the bottom of the steam chamber; creating steam for cooking.
SP8017-1404
EVOLUTION EEK STEAMER
PAGE 18
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