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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
LOW WATER CUTOFF
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Weil McLain Water Heater Parts,
Manufacturer:
https://www.partshnc.com/media/catalog/product/3/8/381-330-035_weil-mclain_partshnc.png
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.