How do I secure the dial

you can always upgrade the voltage rating as long as the 15 MFD capacitance remains the same

For 1-inch variants

verifying the diaphragm's integrity is the first step in troubleshooting fluctuating downstream pressure or pilot hunting

What does this thermal cut-off do

Bard HVAC 8402-114BX Thermal Cutoff How do I secure theThe Bard HVAC 8402 114BX is a critical safety component designed for precise over temperature protection in wall mount air conditioning and heating systems. As a veteran grade OEM replacement part, this 93C thermal cutoff functions as a non resettable high limit safety, engineered to open the electrical circuit if internal temperatures exceed 93C (200F). Frequently found in the electric heat sections of HVAC units, it acts as a permanent fail safe to