AccuTemp EGX2083A48 Service Manual
SERVICE MANUAL
ACCU-STEAM ELECTRIC G2 GRIDDLE
WARNING
Improper installation, alteration, adjustment,service, cleaning or maintenance of this commercial appliance
could result in property damage, serious injury or death.
Read and understand the installation, operational, maintenance instructions before installing, servicing, or
operating this commercial appliance.
AccuTemp Products, Inc. · 8415 North Clinton Park · Fort Wayne, IN 46825 ·800 210-5907 · accutemp.net
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Accu-Steam™ G2 Electric Service Manual
SP8041-1609
WARNING SYMBOL DEFINITIONS
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 others maybe just picture icons. Please give this information the respect they
deserve for safe operation.
Warning Text Boxes
Below are defi nitions of the warning text boxes.
DANGER
Indicates an imminently hazardous situation;
which, if unchanged, will result in death or
serious injury.
WARNING
Indicates a potentially hazardous situation;
which, if unchanged, will result in death or
serious injury.
Symbol Icons
Below are defi nitions of the symbol icons used
in this manual.
ALERT
Notifi es the reader of an import-
ant message or warning; usually a
safety related message.
INFORMATION
Notifi es the reader of an important
information that may or may not
be safety related.
CAUTION
Indicates a potentially hazardous situation;
which, if unchanged, will result in minor or
moderate injury.
NOTE
Advises the reader of information or
instructions, vital to the operation or
maintenance of the equipment.
Accu-Steam™ G2 Electric Service Manual
SP8041-1609
CAUTION -
HOT SURFACE
DANGEROUS
VOLTAGE
EARTH GROUND
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SAFETY PRECAUTIONS
DANGER
ELECTRICAL SHOCK HAZARD WHILE WORKING ON
ENERGIZED EQUIPMENT.
Unplug equipment prior to removing any components effected by electricity.
PERSONNEL INJURY HAZARD WHILE PICKING UP OR
MOVING HEAVY EQUIPMENT.
Always use at least 2 people and proper lifting techniques when picking-up, moving, or
fl ipping-over heavy equipment.
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Accu-Steam™ G2 Electric Service Manual
SP8041-1609
IMPORTANT FOR YOUR SAFETY
The Safety Instructions listed on this page below, should be posted
in a prominent location as a reminder of safe practices; as well as,
recommended actions to follow in the event of an equipment
or facility’s utility issue.
WARNING
In the event of a Power Failure, DO NOT attempt to operate this appliance.
WARNING
DO NOT store or use Gasoline, or any other Flammable Vapor and/or Liquids in the vicinity of this
or any other appliance.
WARNING
IMPROPER installation, adjustment, alteration, service, or maintenance can cause personal injury
or death; and/or property damage. Read the installation, operation, and service/maintenance
instructions thoroughly; before installing or servicing this equipment.
WARNING
Only QUALIFIED service technicians/electricians should perform the equipment installation, to
ensure that all electrical and safety requirements are met; and that all wiring is performed in
accordance with all national, state, and local electrical codes.
Accu-Steam™ G2 Electric Service Manual
SP8041-1609
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WARNING & CAUTION NOTES
WARNING
ONLY QUALIFIED SERVICE TECHNICIANS
SHOULD PERFORM MAINTENANCE ON
THIS EQUIPMENT.
CAUTION
GRIDDLE MAY HAVE SHARP EDGES.
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Accu-Steam™ G2 Electric Service Manual
SP8041-1609
Table of Contents
Sequence of Operation ................................................................................
Specifi cation Sheet ......................................................................................
Troubleshooting Guide ................................................................................
Digital Controller ........................................................................................
Main Components and Purpose ..................................................................
Parts Identifi cation, Removal and Installation
-3 pole Contactor ........................................................................................
-Fuses ..........................................................................................................
-Control Board ............................................................................................
-Hi_Limit ....................................................................................................
-Transformer ...............................................................................................
-Heat light ...................................................................................................
-Solid State Relay .......................................................................................
-RTD Sensor(s) ...........................................................................................
8
9
10-11
12-13
14
15
15
16
16
17
17
17
18
Testing
-RTD ...........................................................................................................
Preventative Maintenance ..........................................................................
Schematics
- 240v single phase ......................................................................................
-208v & 240v three phase ...........................................................................
-440v & 480v three phase ...........................................................................
-380v & 415v three phase ...........................................................................
Product Warranty ........................................................................................
18
19
20
21
22
23
24
Accu-Steam™ G2 Electric Service Manual
SP8041-1609
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Sequence of Operation
When the “Accu-Steam™ G2” griddle is plugged in, AC line voltage is supplied to the lead-in contacts
of the contactor. From the contactor, line voltage is supplied to the primary side of the transformer. The
secondary side voltage out is 24VAC nominal. One leg of the secondary side of the transformer (24VAC) is
split and is connected to the contactor coil and the Hi-Limit thermostat. From the HI-Limit thermostat, the
24VAC leg is daisy chained to the main digital control board. The other secondary leg of power from the
transformer goes to the Hi-Limit and then daisy chains over to the main digital control board. At this time,
the system is waiting to be powered on via the Digital control board. Upon pressing the “ON” button on the
digital controller, the digital controller powers up and a relay on the digital controller is closed, thus making a
connection between one of the two 24VAC legs and the input of the HI-Limit thermostat. If the reading from
the Hi-Limit RTD (Resistive Thermal Device) is not too high, an output relay in the Hi-Limit controller will
be closed causing the contactor to pull in. Once the contactor pulls in, line voltage is sent to the solid state
relays and heating elements. If the internal temperature of the griddle is below the set point of the digital
controller as measured by the digital controller RTD sensor, the digital controller will output 24VDC to the
control side of the solid state relays, turning them on. When the solid state relay(s) are turned on, line voltage
is sent through the SSR connection to all the heating elements and the griddle heats up. When the griddle
heats up to the set point temperature, the digital controller RTD resistance changes and provides a signal to
the control board telling it that the set point temperature has been reached. When the digital controller sees
the resistance value for the set point temperature, it cuts power to the SSR(s) and breaks the connection to
the elements causing the griddle to stop heating further.
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Accu-Steam™ G2 Electric Service Manual
SP8041-1609
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