Avantco 177400046 High-Limit Thermostat 450°F Cap 30"

SKU: 177400046 Brand:
Avantco
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Specifications:

Attribute Details
Hi-Limit, 450F, 232C,
Cap 30", Bulb 1/4" X 4-1/2", 3/8" Mpt Stuffing Box,
Lccm, Auto Reset, Millivolt
Vulcan 1Gr45C, 1Gr45D, 1Gr45M, 1Gr65C, 1Gr65D, 1Gr65M,
1Gr85C, 1Gr85D, 1Gr85M, 1Grc35, 1Grc45, 1Grc65, 1Grd45,
1Grd65, 1Grs35, 1Grs45, 1Grs65, Ef3, Ef4, Ef5,
Gr35F, Gr45F,
Gr65F, Gr85F, Grc35F, Grc45F, Grc65F, Grc85F, Grd35F,
Grd45F, Grd65F, Grd85F, Grs35F, Grs45F, Grs65F, Grs85F,
Vf2, Vf2D, Vmf2, Vmf2D

Description

The Avantco 177400046 High-Limit Thermostat 450°F is an internal temperature sensor that shuts off power when the temp reaches the set limit assisting in regulating overheating conditions in cooking equipment. It is equipped with a sensing bulb and capillary tube assembly to sense temperature changes when operating. This thermostat is frequently used in commercial systems, and heated foodservice equipment that has temperature regulation components for operational control. The 30" capillary design provides for a connection between the sensing bulb and control structure, while at the same time fitting into equipment layouts that call for extended reach for mounting and placement.

More Information:

A hi-limit thermostat is a safety sensor used in commercial fryer and cooking equipment to monitor temperature and prevent the equipment from operating if it becomes too hot. It acts as a protective switch, stopping operation when the internal temperature reaches unsafe levels up to 450°F/232°C. The capillary and bulb sensing system continuously monitors temperature changes inside the cooking chamber and triggers a cutoff response when necessary. This hi-limit thermostat is used in gas fryers for commercial frying applications commonly found in restaurant and foodservice kitchens. During operation, the 30" capillary tube and 1/4" x 4-1/2" bulb transfer temperature readings from the fryer chamber to the control unit for accurate heat detection. It has an auto-reset feature that resumes normal operation when the temperature falls within a safe range. If the hi-limit is found to be faulty and not operating or resetting properly, replacing it may help restore safe shutdown function and minimize overheating issues during normal operation.

Equipment Compatibility:
Typical safety control applications for hi-limit thermostats include commercial gas fryers and heavy-duty cooking equipment used in restaurant kitchens where over-temperature protection is required for safe operation. This Hi-Limit Thermostat 177400046 is compatible with equipment from Vulcan Hart, Atosa, Hobart, Maxx Cold, U-Line, Entrée, and other related brands where automatic high-temperature cutoff control is required for fryer safety and operation.
Brand Compatibility
Replaces multiple part numbers across various commercial fryer and cooking equipment brands, including Vulcan Hart, Hobart, Atosa, Avantco, Maxx Cold, U-Line, Entrée, Adcraft, and other manufacturers that use compatible capillary hi-limit thermostat safety control systems. Refer to the “Replaces Parts” section for complete cross-reference details.

Product Specifications:

Product Type: Hi-Limit Thermostat
Manufacturer: Avantco
SKU: 177400046
Temperature Rating: 450°F (232°C)
Capillary Length: 30"
Bulb Size: 1/4" x 4-1/2"
Connection Type: 3/8" MPT stuffing box
Function: Over-temperature safety cutoff control
Reset Type: Auto reset
Application: Commercial gas fryers and cooking equipment
Control Type: Millivolt safety thermostat system

Key Features:

  • Provides a high-temperature safety cutoff to protect fryer equipment from overheating conditions
  • Uses a capillary bulb sensing system to detect heat changes inside the cooking chamber
  • Auto reset design allows the system to resume operation after the temperature returns to a safe level
  • Works with millivolt safety control systems commonly used in commercial fryer units
  • Replacement part for hi-limit thermostats that are not shutting off or resetting correctly
  • “After installing the new hi-limit thermostat, the fryer started cutting off at the right temperature again, and the overheating issue stopped during regular operation.”
  • ADCRAFT:LCCM2003000 ,LCCM200300000||ATOSA:301030005||AVANTCO:177400046 ,400046||ENTR?E:400046||HOBART:00-410840-00002 ,00-419670-00002 ,110840-2 ,119670-2 ,410840-00002 ,410840-2 ,419670-00002 ,419670-2||MAXX COLD:16031A||U-LINE:LCCM20030000||VULCAN HART:00-410840-00002 ,00-419670-00002 ,110840-2 ,119670-2 ,410840-00002 ,410840-2 ,419670-00002 ,419670-2 ,VH00-410840-00002 ,VH110840-2 ,VH410840-00002 ,VH410840-2 ,VH419670-2 ,VH5225-01K

Step1: Disconnect power supply before servicing the unit safely.

Step2: Locate the hi-limit thermostat inside the equipment.

Step3: Remove the old thermostat from its mounting position.

Step4: Install the new thermostat securely in the same place.

Step5: Reconnect wiring to the correct terminals firmly.

Step6: Ensure proper contact with sensing surface.

Step7: Restore power and test safety cutoff function.

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  • What maintenance is required for the Avantco 177400046 Hi-Limit Thermostat?

    Regularly inspect the Hi-Limit Thermostat for secure electrical connections and signs of corrosion. Keep the surrounding area clean and free of debris. Test the thermostat periodically to ensure accurate temperature limits and safe operation.

  • What are common issues with the Avantco 177400046 Hi-Limit Thermostat?

    • Inaccurate temperature cutoff.
    • Electrical connection failures.
    • Tripping unexpectedly or not connecting.
    • Corrosion or damage affecting performance.