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Vulcan-Hart ECONOFRY EF3 ML-52099, Service Manual

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Vulcan-Hart ECONOFRY EF3 ML-52099 Service Manual Download Page 10

— 10 —

F35641 (02-05)

EF SERIES GAS FRYERS

COMBINATION VALVE

WARNING:

SHUT OFF THE GAS BEFORE

SERVICING.

WARNING:

ALL GAS JOINTS DISTURBED

DURING SERVICING MUST BE CHECKED
FOR LEAKS.  CHECK WITH SOAP AND
WATER SOLUTION (BUBBLES). DO NOT
USE AN OPEN FLAME.

1. Disconnect fryer from main gas supply.

2. Remove heat shield as outlined under

Covers and Panels. (Optional)

3. Remove right burner as outlined under

Burners.

4. Disconnect wire leads from the

combination valve and mark for
reconnecting.

5. Disconnect pilot tubing from combination

valve (Figure 15).

Figure 15

6. Disconnect combination valve union and

pressure fitting (Figure 16).

Figure 16

7. Remove the combination valve from the

fryer.

8. Remove all pipe fittings from the old

combination valve if the new valve is not
supplied with fittings.

9. Reverse procedure to install using original

pipe fittings.

Summary of Contents for ECONOFRY EF3 ML-52099

Page 1: ...ave the necessary tools instruments and skills required to perform the procedure Procedures for which you do not have the necessary tools instruments and skills should be performed by a trained Vulcan Service Technician Reproduction or other use of this Manual without the express written consent of Vulcan is prohibited SERVICE MANUAL For additional information on Vulcan Hart or to locate an author...

Page 2: ...HERMOSTAT 5 HIGH LIMIT 7 THERMOPILE 8 PILOT ORIFICE 9 PILOT 9 COMBINATION VALVE 10 FRY TANK 11 SERVICE PROCEDURES AND ADJUSTMENTS 12 MILLIVOLT CONTROLS TEST 12 THERMOSTAT CALIBRATION 12 Calibration Steps 12 PILOT ADJUSTMENT 13 BURNERS NOZZLES AND ORIFICES 13 Burners 13 Nozzles and Orifices 13 COMBINATION VALVE REGULATOR ADJUSTMENT 14 ELECTRICAL OPERATION 16 CONTROL SYSTEM DESCRIPTION 16 SYSTEM CON...

Page 3: ...dures are included in the Installation and Operation Manual LIGHTING PILOT 1 Turn thermostat OFF 2 Turn gas control valve knob to OFF PILOT Wait 5 minutes 3 Push the gas control valve knob in 4 While still holding knob in light the pilot with a taper Continue to depress knob approximately 30 seconds until the pilot remains lit after the knob is released If pilot does not remain lit repeat steps 2 ...

Page 4: ... the door hinge to the fryer bottom front flange Figure 1 Figure 1 2 Prepare to catch door assembly Once screws and hinge are removed the door will drop off into your hand s 3 Reinstall door assembly by reversing steps 1 2 above Heat Shield 1 Remove screws holding heat shield in place Figure 2 Figure 2 2 Remove heat shield REMOVAL AND REPLACEMENT OF PARTS ...

Page 5: ...igure 3 Figure 3 3 Push burner up while pulling the bottom of the burner forward to clear the burner nozzle Figure 4 Figure 4 4 Reverse the procedure to install THERMOSTAT WARNING SHUT OFF THE GAS BEFORE SERVICING 1 Drain shortening from fry tank 2 Remove heat shield as outlined under Covers and Panels 3 Remove left burner as outlined under Burners 4 Remove thermostat knob by pulling knob off ther...

Page 6: ...e 5 6 Remove wire leads from the rear of the thermostat noting all connections for reassembly Figure 6 Figure 6 7 Loosen the packing nut and holding nut Figure 7 Figure 7 8 Remove the thermostat bulb from the clamp Figure 8 Figure 8 9 Pull the thermostat bulb through the underside of the fry tank and remove the thermostat assembly ...

Page 7: ...NG SHUT OFF THE GAS BEFORE SERVICING 1 Drain shortening from fry tank 2 Remove heat shield as outlined under Covers and Panels 3 Remove wire leads from high limit noting all connections for reassembly Figure 9 Figure 9 4 Remove high limit from mounting bracket 5 Remove left burner as outlined under Burners 6 Loosen the packing nut and the holding nut Figure 10 Figure 10 7 Remove the high limit bul...

Page 8: ...ds of packing nut with Teflon tape to prevent leakage THERMOPILE WARNING SHUT OFF THE GAS BEFORE SERVICING WARNING ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS CHECK WITH SOAP AND WATER SOLUTION BUBBLES DO NOT USE AN OPEN FLAME 1 Remove the screw securing the Pilot Thermopile Assembly Bracket to the tank front Lower the assembly away from the tank Figure 12 2 Disconnect ther...

Page 9: ...he orifice Figure 12 3 Replace orifice and reverse procedure to assemble PILOT WARNING SHUT OFF THE GAS BEFORE SERVICING WARNING ALL GAS JOINTS DISTURBED DURING SERVICING MUST BE CHECKED FOR LEAKS CHECK WITH SOAP AND WATER SOLUTION BUBBLES DO NOT USE AN OPEN FLAME 1 Remove the screw securing the Pilot Thermopile Assembly Bracket to the tank front Lower the assembly away from the tank Figure 12 2 W...

Page 10: ... under Covers and Panels Optional 3 Remove right burner as outlined under Burners 4 Disconnect wire leads from the combination valve and mark for reconnecting 5 Disconnect pilot tubing from combination valve Figure 15 Figure 15 6 Disconnect combination valve union and pressure fitting Figure 16 Figure 16 7 Remove the combination valve from the fryer 8 Remove all pipe fittings from the old combinat...

Page 11: ...vers and Panels 5 Remove screws holding fryer tank Figure 17 Figure 17 6 Remove burners as outlined under Burners 7 Remove the manifold bracket from the tank assembly by removing the 4 bolts Figure 18 Figure 18 8 Remove thermostat and high limit as outlined under Thermostat and High Limit 9 Remove the screw securing the Pilot Thermopile Bracket Assembly Figure 19 Figure 19 10 Lift the fry tank up ...

Page 12: ... replace the combination valve 6 Connect DC voltmeter to terminals PG and TH of combination valve 7 Turn gas control valve knob to ON Turn thermostat to a setting higher than the shortening temperature A If the voltage measures 150 millivolts or more but the burners do not ignite replace the combination valve B If the voltage is less than 150 millivolts measure the voltage between terminals NO of ...

Page 13: ...ove the cap covering pilot adjustment screw Figure 21 Turn the recessed pilot adjustment screw counterclockwise to increase the size of the flame or clockwise to decrease the size of the flame Figure 21 BURNERS NOZZLES AND ORIFICES WARNING SHUT OFF THE GAS BEFORE SERVICING Burners If the burner ports become clogged the fryer will not operate properly If the burner is cracked it must be replaced 1 ...

Page 14: ... OFF THE GAS BEFORE SERVICING Accurate gas pressure adjustments can only be made with the gas on and the burner lit If the incoming line pressure to the valve is less than the minimum stated then the pressure cannot be set correctly The combination valve is preadjusted for natural or propane gas as specified on the rating plate The natural gas rating is 4 W C and the propane rating is 10 W C 1 Tur...

Page 15: ... the pressure rating on the data plate A To adjust remove the cap covering the manifold pressure adjustment screw Figure 25 Turn the recessed manifold pressure adjustment screw counterclockwise to decrease pressure or clockwise to increase pressure Figure 25 7 Install the cap and check for proper operation ...

Page 16: ...tat Control A One side of the millivolt supply is connected through the high limit system as described above to the thermostat common wire 3 of the combination valve B The other side of the thermopile is connected from the normally open contacts of the high limit to the thermostat through wire 1 C When the thermostat calls for heat closed circuit power from the thermopile is then connected to the ...

Page 17: ...ners should light A lf the burner does not light check the following 1 Voltage at combination valve at wires 2 and 4 2 If correct voltage is present then check combination valve 3 If there are Ø volts check voltage between wire 3 of combination valve and wire 1 of thermostat If correct voltage is present then check resistance of the thermostat contacts and continuity of wires 3 2 SCHEMATIC Figure ...

Page 18: ...e temperature settings over 375 F Shortening not being filtered regularly Incorrect preparation of breaded food REMEDY Adjust gas supply at gas combination valve Relocate fryer Adjust loads accordingly Check thermopile function and connections Adjust or replace as required Replace shutoff valve Clean burner orifice and air openings as required Adjust temperature setting Adjust filtering schedule D...

Page 19: ...pid attack on tank by promoting acid formulation Gas pressure too low Gas pressure too low at submanifold REMEDY Replace shortening Gas control valve knob should be in PILOT or OFF position before draining oil Burners heating an empty tank will damage tank joints Clean tank surfaces Check gas pressure on submanifold fitting when fryer is in operation Check other equipment attached to same gas line...

Page 20: ...F35641 02 05 PRINTED IN U S A ...

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