background image

SP8016-1005

ACCU-STEAM  SERVICE MANUAL

PAGE 15

Connect Flame Tester, AccuTemp P/N  FT- 003 to your multi-

1. 

meter
Set multi-meter to DC mv.

2. 

Connect Flame Tester leads, to Igniter Harness Orange (or 

3. 

yellow) and Green wires.
Verify your reading is above 60 DC mv  and the system will 

4. 

shutdown below 19 DC mv.

9. If the pilot burner is lighting, determine if the sensing signal level is 25mV (1.07uA) or higher

(see the attached millivolt to micro amp chart).

a. If the level is less than 25mV (1.07uA), check for proper gas pressures to the main

regulator and to the pilot regulator. For natural gas, the pressures must be 5" H2O for

the main gas valve and 3.5" H2O for the pilot burner regulator. For propane gas, the

pressures must be 10" H2O for the main gas valve and 8.0" H2O for the pilot burner

regulator.

b. If the gas pressures are good but the sensing signal level is still poor, check the pilot

orifice for obstruction. Clean or replace as necessary.

c. If the gas pressures are good, the pilot orifice is clean, the burner surface is glowing

orange to bright orange but the signal level is still poor, replace the ignitor probe set

and ground plane.

10. Four types of meter readings are possible: 0 millivolts or 0 micro amps; a steady reading of 25

millivolts or 1.07 micro amps or more; a low reading less than 25 millivolts or 1.07 microamps;

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 defective ignition module. The wire and rod can be diagnosed with an ohmmeter.

Make the diagnosis of a defective ignition module after all other possibilities have been

exhausted.

b. 25 millivolts or 1.07 micro amps, with a steady reading – The system is

operating within normal parameters.

c. Fluctuating meter reading – Check that the flame sensor probes are properly

located. Also check for drafts that can cause an unstable flame. A dirty orifice can also

cause an unstable flame.

d. Less than 25 millivolts or 1.07 micro amps – Look for a pilot flame that’s not

properly engulfing the flame-sensing rod. A flame sensor probe too close to the tile will

not be in the proper part of the flame, with not enough ionized gas to allow a proper

signal level to be conducted. Conversely, the same thing holds true if the flame sensor

is too high. Also check the ground connection back to the ignition module. Check that

the flame-sensing rod and ground plane are not oxidized. Clean both with a non

aluminum oxide abrasive.

Important! The ignition module should be the last item that is replaced. Ignition modules are

designed and tested to rigorous standards to ensure safe and consistent operation. Therefore, focus

on other less robust components before swapping out the ignition module.

FLAME SENSE MEASUREMENT  

USING ThE VOLTAGE METhOD

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...

Отзывы: