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Weil McLain 381-330-035 Low Water Cutoff

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Special Price $132.60 Regular Price $152.49
In stock
SKU
381-330-035
The Weil McLain 381-330-035 Low Water Cutoff is used to monitor boiler water levels and automatically interrupt burner operation when water drops below a secure operating level. It supports to protect the boiler caused by low-water conditions while ensuring secure and dependable system operation. It contains compatibility with designed heating equipment and it maintains accurate low-water protection in the HVAC systems. It operates as a boiler security component, supporting equipment protection, secure operation, dependable performance and extended operations.
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Weil McLain Water Heater Parts,
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Manufacturer Name: Weil McLain
Product Number: 381-330-035
OEM Part Number: 381-330-035
Product Description: Low Water Cutoff
Weight:0.83lbs/376.48g

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Product Questions (2)
Customer Questions
What maintenance is required for the Weil McLain 381-330-035 Low Water Cutoff?

Inspect the low water cutoff regularly for proper mounting and ensure wiring connections are tight and corrosion-free. Clean the probe or float chamber to remove scale buildup that can affect water level sensing. Test the safety cutoff operation during scheduled boiler servicing. Regular maintenance ensures accurate protection against low-water boiler operation.

What are common issues with the Weil McLain 381-330-035 Low Water Cutoff?

  • Scale buildup causing false low-water readings.
  • Switch failing to trip due to probe contamination.
  • Intermittent electrical connection or wiring faults.
  • Float sticking or delayed response in sensing chamber.
  • Boiler lockouts triggered by inaccurate water level detection.

Installation Steps

Step 1: Turn off power and shut water supply, confirm unit is cool and fully isolated for safety.

Step 2: Drain system to a safe level and access control mounting area.

Step 3: Remove old low water cutoff and clean piping and mounting threads.

Step 4: Install new cutoff securely using proper sealant on threaded connections.

Step 5: Reconnect wiring per schematic diagram carefully.

Step 6: Restore water and power, then test cutoff operation.