AccuTemp 2611 User manual
SP8016-1005 ACCU-STEAM SERVICE MANUAL
SERVICE MANUAL
SERIAL NUMBERS 2611 AND UP
NATURAL GAS AND PROPANE
SP8016-1005 ACCU-STEAM SERVICE MANUAL
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SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 1
TABLE OF CONTENTS
TABLE OF CONTENTS 1
DOCUMENT HISTORY 2
INTRODUCTION 3
SEQUENCE OF OPERATIONS 3
TROUBLESHOOTING MATRIX 4-5
REMOVAL AND INSTALLATION - TRANSFORMER 5
REMOVAL AND INSTALLATION - LAMPS 6
REMOVAL AND INSTALLATION - SWITCH 6
REMOVAL AND INSTALLATION - THERMOSTAT 7-8
REMOVAL AND INSTALLATION - TEMPERATURE SENSOR 8
REMOVAL AND INSTALLATION - TIME DELAY RELAY 9
REMOVAL AND INSTALLATION - HI LIMIT ASSEMBLY 9-10
REMOVAL AND INSTALLATION - STANDBY BURNER ( PILOT) 11
REMOVAL AND INSTALLATION - MAIN BURNERS 12
REMOVAL AND INSTALLATION - IGNITION MODULE 12
REMOVAL AND INSTALLATION - CONTROL AND MAIN VALVE AND PILOT REGULATOR 13
TESTING - FLAME SENSE 18-19
TESTING - CHAMBER INTEGRITY 19
CHART - RESISTANCE RTD TEMPERATURE SENSOR 20
CHART - RESISTANCE K TYPE TEMPERATURE SENSOR 20
CHART - ORIFICE SIZE VERSUS ELEVATION AND BTU CONTENT 21
SCHEMATIC - STANDARD IGNITION 22
SCHEMATIC - INTERMITTENT IGNITION WITH MAIN BURNER VALVE 23
SCHEMATIC - INTERMITTENT IGNITION 24
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 2
DOCUMENT HISTORY
CURRENT
REVISION DATE
PRIOR
REVISION DATE CHANGE
1005 5/14/10 N/A N/A
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 3
INTRODUCTION
212°F
above 212 °F
±
3 °F
SEQUENCE OF OPERATION S/N 2611 to 7183
SEQUENCE OF OPERATION S/N’s 7184 and UP
CONTINUOUS PILOT BURNER
INTERMITTENT IGNITION
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 4
SYMPTOM POSSIBLE CAUSE EVALUATION
Valves
TROUBLE SHOOTING MATRIX
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 5
SYMPTOM POSSIBLE CAUSE EVALUATION
REMOVAL AND INSTALLATION
TRANSFORMER
1.
2.
3.
4.
5.
TRANSFORMER
AT0E-1809-1
TROUBLE SHOOTING MATRIX
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 6
LAMPS
The lamps are a neon style lamp that is driven by 24vac.
1.
2.
3.
4.
5.
POWER
AT0E-1800-2
HEAT
AT0E-1800-1
ON / OFF SWITCH AND CONTACTS
This switch consists of 4 parts and each can be changed individually if any of the parts
failed.
1.
2.
3.
4.
5.
6.
AT0E-3336-1
MOUNTING BLOCK
AT0E-3339-1
AT0E-3338-1
2 REQUIRED
REMOVAL AND INSTALLATION
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 7
REMOVAL AND INSTALLATION
THERMOSTAT
WARNING - ALL THERMOSTATS MUST BE CALIBRATED TO 400 °F, ( +1 )
1.
2.
3.
4.
5.
Note: Units with serial numbers 2611 to 7550 have a type K thermostat and thermocouple.
(red and yellow leads) Serial numbers 7551 and above have a RTD thermostat and probe.
(two red leads). When replacing a thermostat, always use a RTD thermostat and probe.
CALIBRATION POT
K Type Temperature Controller - P/N AT0E-2559-3
This was replaced by the RTD
Controller P/N AT0E-2559-6 &
Thermocouple P/N AT0E-2885-3
Must be used on all older series
griddles with the welded in
thermocouple
RTD Type Temperature Controller - P/N AT0E-2559-6
MUST USE RTD THERMOCOUPLE
P/N AT0E-2885-3
Calibration Pot
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 8
RTD THERMOSTAT CALIBRATION
±
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
TEMP PROBE
The temperature sensor is screwed into a thermal-well underneath the griddle chamber. It is
isolated from the distilled water of the griddle chamber. It is designed to indicate temperature
by changing the resistance based on temperature to the thermostat. Be careful if you have to
drill out the sensor not to puncture the chamber as it will render the griddle un-repairable.
1.
2.
3.
4.
5.
PROBE LOCATION
UNDERSIDE OF GRIDDLE RTD TEMPERATURE SENSOR
AT0E-2885-3
REMOVAL AND INSTALLATION
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 9
HI-LIMIT ASSEMBLY
Is a safety designed to turn off the griddle at a preset temperature to limit the pressure of the
steam chamber so that it doesn’t set off the one time pressure relief valve which will render
the griddle un-repairable
1.
2. Verify the Hi Limit rod has
pulled and released the switch before proceeding.
3.
Note: The entire assembly will want to drop down when removing the bracket.
4.
Note: It is extremely important that the solder washer has good surface contact with the
surface of the thermal-well. Make sure the solder washer is installed before the at washer.
5. See the drawing on the following page.
TIME DELAY RELAY
The time delay relay is used to delay a signal to allow for the proper mixture of air and gas
before igniting the main burners.
1.
2.
3.
4.
Note: Make sure the adjustment pot is set for 20 seconds.
AT2H-2500
TIME DELAY ADJUSTMENT
SET FOR 20 SECONDS
SOLDER WASHER
AT2M-2860-1
WASHER
AT2F-1367-1
ROD
AT2M-2861-1
MICROSWITCH
COVER
AT2E-1759
COMPRESSION
SPRING
AT2H-1365-1
EXTENSION
SPRING
AT2H-1640-1
AT2M-1558
MICROSWITCH
AT2E-1639-1
REMOVAL AND INSTALLATION
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 10
REMOVAL AND INSTALLATION
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 11
STANDBY BURNER (PILOT BURNER)
1.
2.
3.
4.
5.
6.
7.
8.
See Pages XX to XX for instructions on measuring ame sense.
PROBES
STANDBY BURNER
AT2A-2255-2 IGNITOR KIT
REMOVAL AND INSTALLATION
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 12
IGNITION MODULE
Is the electronic device that veries that the griddle has ignited and is running. If the proper
signals are not received from the ame sense it will lockout the griddle.
1.
2.
3.
4.
Note: Serial numbers 7184 and above will have an Interim Intermittent Ignition system in
conjunction with the dual solenoid valve. The main gas valve was removed
MAIN BURNERS
Main burners are a ceramic burner that supplies the required heat to operate the griddle. If the
get wet they should be allowed to dry without applying heat as they will crack and will need
replaced
1.
2.
3.
4.
5.
AT2B-2991-1
BURNER 24” MODEL
AT2B-2131-1
IGNITION MODULE
AT2E-1807-1
REMOVAL AND INSTALLATION
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 13
GAS CONTROL VALVE, MAIN BURNER VALVE AND PRESSURE REGULATOR
1.
2.
3.
hose.
4.
5.
REMOVAL AND INSTALLATION
OLD STYLE VALVE TRAIN
S/N 2661 TO 7894
NEW STYLE VALVE TRAIN
Control Valve and Pilot Valve gas pressures must be adjusted after replacing to assure to
assist in correct operation.
1/8 NPT
GAS TYPE MAIN PRESSURE PILOT PRESSURE
NATURAL 5 INCHES WATER COLUMN 3.5 INCHES WATER COLUMN
PROPANE 10 INCHES WATER COLUMN 8 INCHES WATER COLUMN
GAS PRESSURE CHART
CONTROL VALVE
AT2E-1806-2 - NG (5”WC)
AT2E-1806-3 - P (10”WC)
MAIN BURNER VALVE
AT2E-2087-1
PILOT VALVE
AT0P-2847-1- NG (3.5”WC)
AT0P-2847-2 - P (8” WC)
1/4 NPT
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 14
FLAME SENSE MEASUREMENT
TROUBLESHOOTING
TESTING
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 15
1.
2.
3.
4.
FLAME SENSE MEASUREMENT
USING THE VOLTAGE METHOD
TESTING
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 16
1.
2.
3. 1/3
4.
5.
6.
7. ±5º F of each other across the entire surface.
TESTING
CHAMBER INTEGRITY TEST
Notes:
Do not use a infrared temperature measuring device as it will not work correctly.
Tools Required:
Level
DIgital Temperature Meter
&
Weighted Temperature Probe
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 17
RTD PROBE
°F RTD Resistance Value
0
100
200
300
400
TYPE K THERMOCOUPLE READINGS - THERMOELECTRIC VOLTAGE IN DC MILLIVOLTS
F°012345678910
70 0.843 0.865 0.888 0.91 0.933 0.955 0.978 1 1.023 1.045 1.068
80 1.068 1.09 1.113 1.136 1.158 1.181 1.203 1.226 1.249 1.271 1.294
90 1.294 1.316 1.339 1.362 1.384 1.407 1.43 1.453 1.475 1.498 1.521
100 1.521 1.543 1.566 1.589 1.612 1.635 1.657 1.68 1.703 1.726 1.749
110 1.749 1.771 1.794 1.817 1.84 1.863 1.886 1.909 1.931 1.954 1.977
120 1.977 2 2.023 2.046 2.069 2.092 2.115 2.138 2.161 2.184 2.207
130 2.207 2.23 2.253 2.276 2.298 2.321 2.344 2.367 2.39 2.413 2.436
140 2.436 2.459 2.483 2.506 2.529 2.552 2.575 2.598 2.621 2.644 2.667
150 2.667 2.69 2.713 2.736 2.759 2.782 2.805 2.828 2.851 2.874 2.897
160 2.897 2.92 2.944 2.967 2.99 3.013 3.036 3.059 3.082 3.105 3.128
170 3.128 3.151 3.174 3.197 3.22 3.244 3.267 3.29 3.313 3.336 3.359
180 3.359 3.382 3.405 3.428 3.451 3.474 3.497 3.52 3.544 3.567 3.59
190 3.59 3.613 3.636 3.659 3.682 3.705 3.728 3.751 3.774 3.797 3.82
200 3.82 3.843 3.866 3.889 3.912 3.935 3.958 3.981 4.004 4.027 4.05
210 4.05 4.073 4.096 4.119 4.142 4.165 4.188 4.211 4.234 4.257 4.28
220 4.28 4.303 4.326 4.349 4.372 4.395 4.417 4.44 4.463 4.486 4.509
230 4.509 4.532 4.555 4.578 4.601 4.623 4.646 4.669 4.692 4.715 4.738
240 4.738 4.76 4.783 4.806 4.829 4.852 4.874 4.897 4.92 4.943 4.965
250 4.965 4.988 5.011 5.034 5.056 5.079 5.102 5.124 5.147 5.17 5.192
260 5.192 5.215 5.238 5.26 5.283 5.306 5.328 5.351 5.374 5.396 5.419
270 5.419 5.441 5.464 5.487 5.509 5.532 5.554 5.577 5.599 5.622 5.644
280 5.644 5.667 5.69 5.712 5.735 5.757 5.779 5.802 5.824 5.847 5.869
290 5.869 5.892 5.914 5.937 5.959 5.982 6.004 6.026 6.049 6.071 6.094
300 6.094 6.116 6.138 6.161 6.183 6.205 6.228 6.25 6.272 6.295 6.317
310 6.317 6.339 6.362 6.384 6.406 6.429 6.451 6.473 6.496 6.518 6.54
320 6.54 6.562 6.585 6.607 6.629 6.652 6.674 6.696 6.718 6.741 6.763
330 6.763 6.785 6.807 6.829 6.852 6.874 6.896 6.918 6.941 6.963 6.985
340 6.985 7.007 7.029 7.052 7.074 7096 7.118 7.14 7.163 7.185 7.207
350 7.207 7.229 7.251 7.276 7.296 7.318 7.34 7.362 7.384 7.407 7.429
RTD TEMPERATURE SENSOR
AT0E-2885-3
TEMPERATURE SENSOR (THERMOCOUPLE) RESISTANCE CHART
K TYPE TEMPERATURE SENSOR
AT0E-2885-2
SP8016-1005 ACCU-STEAM SERVICE MANUAL PAGE 18
GAS GRIDDLE ORIFICE REFERENCE TABLE FOR ALTITUDE AND BTU CONTENT
PILOT BURNER 24" GRIDDLE MAIN
BURNER
36" GRIDDLE
MAIN BURNER
48" GRIDDLE
MAIN BURNER
NG LP NG LP NG LP NG LP
3000
4000
5000
6000
7000
8000
9000
10000
HEAT VALUE NATURAL GAS - 1000 PROPANE GAS - 2300
PILOT BURNER
BURNER
BURNER
BURNER
NG LP NG LP NG LP NG LP
3000
4000
5000
6000
7000
8000
9000
10000 1.25MM 1.25MM
HEAT VALUE NATURAL GAS - 1100 PROPANE GAS - 2400
PILOT BURNER
BURNER
BURNER
BURNER
NG LP NG LP NG LP NG LP
3000 3/64
4000
5000
6000
7000 1.25MM
8000 1.25MM
9000 1.25MM 3/64
10000 1.25MM 3/64
GAS GRIDDLE ORIFICE REFERENCE CHART FOR ALTITUDE AND BTU CONTENT
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