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SP8016-1005

ACCU-STEAM  SERVICE MANUAL

PAGE 14

FLAME SENSE MEASUREMENT

The ACCU-STEAM gas griddle has a flame sensing circuit to determine if the system has proper 

combustion.  When the system is turned on gas is sent to the pilot burner and an electronic 

ignition tries to ignite the griddle.  The griddle then checks to see if flame is established in the 

pilot burner.  If the flame sense feedback voltage is within the proper range the  system will  ignite 

the main burners and they stay on until the thermostat is satisfied.  The  griddle flame sense 

continues to monitor the voltage and as long as it within the proper range the griddle will stay on.
 If the flame sense voltage falls below  the threshold the griddle will go into lock out and will shut 

down the griddle.  Cycling the on/off switch will restart the ignition and flame sense test.  If it fails 

again you may need to troubleshoot the ignition/flame sense section.

TROUBLEShOOTING 

How to make a diagnosis:

1. Determine that power is present at the griddle

2. Determine that gas is supplied at the proper pressures to the unit.

3. Install an inch-units H2O manometer onto the port on the side of the main gas regulator valve

and onto the pressure tap outboard of the pilot regulator.

4. Install a flame-sensing probe into the flame sense circuit. 

a. A meter with micro amp (<A) selection or a micro amp adapter must be place in series

with the orange flame sense wire. To check micro amps, disconnect the orange wire

from the flame rod, connect the amp meter in series with the flame sensing rod

terminal and the orange wire from the wiring harness.

b. An Accutemp volt-measuring adapter P/N FT0003 (meter set for millivolts) is placed in parallel 

with the orange flame sense circuit. Attach one end of the adapter to the orange wire and the 

other to ground.

5. Turn the unit on (Power lamp is lit)

6. If the pilot burner is not lighting and there is no spark, check for 24 VAC input to the ignition

module.

a. If there is 24VAC present at the ignition module and all of the ground connections are

good, check the ignition cable for an open or a short to ground.

b. If there is 24VAC present at the ignition module and all of the ground connections and

the ignition cable are good, test for spark by disabling the main regulator gas valve and

place the ignitor cable close to ground. Turn the griddle ON. If there is no spark,

replace the ignition module.

c. If there is a spark, check the ignitor probe spark gap on the pilot burner. Adjust, if

necessary. If the probes look badly oxidized, replace the probes.

7. If there is spark but no gas to the pilot regulator, check for 24VAC at the gas valve coil. If

24VAC is not present at the coil of the main regulator gas valve, and the connecting harnesses

are good, replace the ignition module.

8. If 24VAC is present at the gas valve coil and no gas is flowing to the pilot regulator, replace

the main regulator gas valve. When changing the valve, check for debris in the gas line and

valve. Ensure that a drip leg is installed before the unit.

regulator.

TESTING

Содержание 2611

Страница 1: ...SP8016 1005 ACCU STEAM SERVICE MANUAL SERVICE MANUAL SERIAL NUMBERS 2611 AND UP NATURAL GAS AND PROPANE...

Страница 2: ...SP8016 1005 ACCU STEAM SERVICE MANUAL Toll Free 800 480 0415 Office 260 469 3040 Fax 260 493 8914 email service accutemp net Web Site www accutemp net Technical Services...

Страница 3: ...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 REM...

Страница 4: ...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 Initial release of manual...

Страница 5: ...rning food in place SEQUENCE OF OPERATION S N 2611 to 7183 120V power is supplied to the primary side of the transformer 24VAC comes off the secondary side of the transformer which provides power to t...

Страница 6: ...should be set at 5 and the stand by burner should be set at 3 5 inches of water column for natural gas when the griddle is in operation For propane units the pilot should be set at 8 inches and the m...

Страница 7: ...rature setting three reading across the back three across the middle and three across the front All readings should be within 3 degrees Check for hot spots or leaks Notify Accutemp Service with any fl...

Страница 8: ...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 Unplug the unit 1 Remove the three screws from the front door pan...

Страница 9: ...everse order 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 Wh...

Страница 10: ...cord the value 6 Take a reading from the thermometer The value should be 400 F 1 F 4 F If not adjust 7 the offset potentiometer on the thermostat and allow the unit to stabilize Repeat step 7 as is ne...

Страница 11: ...ch bracket 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 flat washer Reattach...

Страница 12: ...SP8016 1005 ACCU STEAM SERVICE MANUAL PAGE 10 REMOVAL AND INSTALLATION...

Страница 13: ...studs that hold the ignitor sensor bracket 4 Remove the ignitor cable from the ignitor probe Inspect for damage 5 Pull the orifice adaptor out of the venturi and pull the pilot assembly down 6 Note Ch...

Страница 14: ...bove 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 requi...

Страница 15: ...der 5 REMOVAL AND INSTALLATION OLD STYLE VALVE TRAIN S N 2661 TO 7894 NEW STYLE VALVE TRAIN S N 7895 UP Control Valve and Pilot Valve gas pressures must be adjusted after replacing to assure to assist...

Страница 16: ...To check micro amps disconnect the orange wire from the flame rod connect the amp meter in series with the flame sensing rod terminal and the orange wire from the wiring harness b An Accutemp volt me...

Страница 17: ...icroamps or a fluctuating reading that won t stabilize The possible causes for each type of reading are a 0 millivolts or micro amps Look for an open or grounded sensor wire or flame rod or a defectiv...

Страница 18: ...thermostat setting to 300 F allow griddle to cycle through two heat cycles 5 Place weighted temperature probe and record temperatures according to the chart below 6 Temperatures shall be within 7 5 F...

Страница 19: ...2 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...

Страница 20: ...64 74 53 59 48 56 50 56 HEAT VALUE NATURAL GAS 1000 PROPANE GAS 2300 PILOT BURNER 24 GRIDDLE MAIN BURNER 36 GRIDDLE MAIN BURNER 48 GRIDDLE MAIN BURNER Altitude ft NG LP NG LP NG LP NG LP 3000 59 71 4...

Страница 21: ...5 72 54 58 47 55 47 1 25MM 9000 65 72 54 59 48 1 25MM 48 3 64 10000 66 72 54 59 49 1 25MM 49 3 64 HEAT VALUE NATURAL GAS 1300 PROPANE GAS 2700 PILOT BURNER 24 GRIDDLE MAIN BURNER 36 GRIDDLE MAIN BURNE...

Страница 22: ...RED RED BLU RED K TYPE YEL RED 1 2 3 4 5 6 7 PWR NA COM OUTPUT K TYPE CONTROLLER CAL OFFSET ADJ t o HEAT LT2 PWR LT1 WHT RED RED RED ORN ORN or YEL GRN GRN BURNER 1 2 3 4 5 6 24V SEC 120V PRI MAIN GA...

Страница 23: ...RED 1 P1 2 1 J1 2 OFF ON RED RED BLU RED HEAT LT 2 PWR LT1 WHT YEL YEL ORN ORN or YEL GRN GRN BURNER 1 2 3 4 5 6 24V SEC 120V PRI MAIN GAS CONTROL VALVE MAIN BURNER VALVE SPARK MODULE HV IGNITOR SENSO...

Страница 24: ...2 1 J1 2 OFF ON RED BLU RED RED RED 1 3 5 6 8 9 L1 L2 OUTPUT PRTD PRTD TYPE CONTROLLER CAL OFFSET ADJ t o HEAT LT 2 PWR LT 1 WHT RED ORN YEL 24V SEC 120V PRI MAIN GAS CONTROL VALVE MAIN BURNER VALVE Y...

Страница 25: ...SP8016 1005 ACCU STEAM SERVICE MANUAL...

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