Vulcan-Hart ERD40 Thermistor Probe Resistance Chart, Temperature Control Calibration

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ELECTRIC FRYERS - SERVICE PROCEDURES AND ADJUSTMENTS

SERVICE PROCEDURES AND ADJUSTMENTS

WARNING: HOT OIL AND PARTS CAN CAUSE BURNS. USE CARE WHEN SERVICING THE FRYER.

WARNING: CERTAIN PROCEDURES IN THIS SECTION REQUIRE ELECTRICAL TESTS OR MEASUREMENTS WHILE POWER IS APPLIED TO THE MACHINE. EXERCISE EXTREME CAUTION AT ALL TIMES. IF TEST POINTS ARE NOT EASILY ACCESSIBLE, DISCONNECT POWER, ATTACH TEST EQUIPMENT AND REAPPLY POWER TO TEST.

THERMISTOR PROBE

RESISTANCE CHART

Solid State Control

F

Resistance

 

± 10%

 

 

77

30,000 ohms

 

 

311

494 ohms

340

340 ohms

NOTE: If probe is opened or disconnected, the LED near the center of the Control Board will be on. If probe is shorted, the first high limit light will be on.

Computer Control

F

Resistance

F

Resistance

 

± 10%

 

± 10%

 

 

 

 

77

100,000 ohms

300

1394 ohms

 

 

 

 

212

5573 ohms

350

717.7 ohms

 

 

 

 

275

2004 ohms

392

434.5 ohms

TEMPERATURE CONTROL

CALIBRATION

Solid State Control

1.Shortening in tank must be to fill line.

2.Allow the oil to cool below 300￿F.

3.Place a thermometer in the center of the tank one inch below the oil surface.

4.Set the temperature control to 350￿F and turn the fryer on.

5.After the thermometer reads 350￿F, allow the temperature control to cycle three times.

6.Agitate the shortening, to eliminate any cold zones, while you record the temperatures to calculate average temperature.

7.Calculate the average temperature. Average temperature = (Temperature at "off” + temperature at "on") / 2 . (Example: (360￿+ 340￿) / 2 = 350￿F. The average temperature should be 350￿F (± 5￿F). The following steps should be taken if not.

A.Carefully loosen the set screw in the temperature control knob.

B.Rotate the knob and set the knob at the shortening temperature.

C.Tighten the set screw.

D.Allow the fryer to cycle and check for agreement with the thermometer.

8.If the above adjustments can not be obtained, check the control and temperature probe as outlined under "TEMPERATURE CONTROL TEST” and “THERMISTOR PROBE RESISTANCE CHART".

TEMPERATURE CONTROL

TEST

WARNING: DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AT THE MAIN CIRCUIT BOX. THERE MAY BE TWO SEPARATE CIRCUITS. BE SURE BOTH ARE DISCONNECTED. PLACE A TAG ON THE CIRCUIT BOX INDICATING THE CIRCUIT IS BEING SERVICED.

1.Remove screws securing control panel and let panel swing down.

2.Disconnect potentiometer plug.

3.Connect ohm meter to pins 1 and 3. Meter should read 10k ohms ± 10%.

4.Connect meter to pins 1 and 2. With knob turned clockwise to the stop, the meter should read zero ohms. Slowly rotate knob counterclockwise to stop and meter should change reading from 0 up to 10k ohms. Check that there are no dead spots and that wiper tracks smoothly as you rotate knob.

5.Connect meter to pins 3 and 2. With knob turned counterclockwise to the stop, the meter should read zero ohms. Slowly rotate knob clockwise to the stop and meter should change reading from 0 up to 10k ohms. Check that there are no dead spots and that wiper tracks smoothly as you rotate knob.

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Contents Floor Model Electric Fryers Table of Contents General IntroductionOperator Control Location Battery ConfigurationTools Potentiometer Solid State Models Control PanelsComputer Control Heating Elements Probe High Limit ThermostatLift Assist Springs Tilt Switch FILTER-READY Return Valve SwitchTemperature Control Calibration Thermistor Probe Resistance ChartTemperature Control Test Heating Element Test Total Resistance Resistance PER PER Element Element OhmsMelt Temperature Calibration Solid State Control Control Board Test Solid State ControlComputer Control Test Tilt Switch Adjustment Lift Assist Spring AdjustmentBasket Lift ARM Adjustment Component FunctionComponent Location Control BOX Computer Control Full VAT Sequence of Operation Battery and Inter Plumb Filter Sequence Operation Basket Lift Sequence OperationComputer Control Board Diagnostics Power UP Diagnostics Schematics Split Vat With Solid State Control Full Vat With Computer Control Split Vat With Computer Control Filter Ready, Inter Plumb Options Wiring Diagram Index Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Serve Station Units Computer Control Harness PIN-OUTS Chart Solid State Control

ERD40 specifications

The Vulcan-Hart ERD40 is a premium commercial deep fryer designed for high-volume food service operations. Renowned for its durability and efficiency, this fryer is a staple in restaurants, catering services, and other culinary establishments where consistent performance and speed are paramount.

One of the standout features of the ERD40 is its impressive cooking capacity. With a large frying pot, the fryer can handle substantial volumes of food, making it ideal for busy kitchen environments. It typically includes twin fry pots which allows simultaneous frying of different food items, enhancing productivity and serving speed without compromising on quality.

The fryer is equipped with advanced temperature control technology, which ensures precise temperature regulation. This feature is crucial for achieving perfect frying results and maintaining the quality of fried foods. The temperature can be easily adjusted, providing the flexibility needed for different cooking requirements.

Another key technology incorporated into the Vulcan-Hart ERD40 is its efficient oil filtration system, which helps extend the life of the cooking oil. This system filters out food particles and contaminants, keeping the oil clean and reducing the need for frequent oil changes. As a result, operators can save on both oil costs and maintenance time, ultimately increasing profitability.

The design of the ERD40 prioritizes user convenience and safety. It includes features such as a hinged lid for easy access and an ergonomic design to minimize the risk of spills and burns. Additionally, the fryer is constructed with robust materials that ensure longevity, even under heavy use.

Cleaning and maintenance are made straightforward with removable parts and easy-to-access components, allowing for quick disassembly and thorough cleaning. This attention to detail helps maintain hygiene standards crucial in food service environments.

With its combination of durability, efficiency, and advanced frying technology, the Vulcan-Hart ERD40 is an excellent investment for any commercial kitchen. It meets the demands of high-volume cooking while providing the reliability chefs depend on to serve high-quality dishes consistently.