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Warrick Conductivity Controls

LWC-720 Series Low Level Cut Off with Pump Control

Part Number:
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LWC-720_251319_Internal
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PRODUCT DESCRIPTION:

Gems LWC-720 is designed for boiler low-water cutoff protection, and offers the most compact internally mounting package for boiler and steam generators. In addition to the low level cutoff switch, the LWC-720 Series includes a high level switch, control logic and relay for pump-up control. For added safety, the sensor assembly incorporates redundant reed switches at the actuation level. The LWC-720 Series is ideal for R.O., distilled, or deionized water systems. Optional Features include: Power Outage feature allows for resets after nuisance power outages; Reset Button feature to be used when device has been deactivated due to low water condition. A Reset is activated only after water has returned to normal level.

  • Internal Mounting
  • Includes Pump Control Switch
  • Logic and Relay
  • Meets CSD1 Requirements, U.L. Recognized "Limit Control"
  • Compact Size
  • Options Include: Manual Reset; Power Outage Feature; and Test Feature

FEATURED DOWNLOADS:

Catalog Page
CE ROHS Gems Compliant CSA

Features

  • Internal Mounting
  • Includes Pump Control Switch
  • Logic and Relay
  • Meets CSD1 Requirements
  • U.L. Recognized "Limit Control"
  • Compact Size
  • Options Include: Manual Reset; Power Outage Feature; and Test Feature 
Model
LWC-720
Sensor Type
Float Type
Sensitivity
10 K ohms
Enclosure
NEMA 1
Contact Design
1 Normally Open & 1 Normally Closed (non-powered)
Contact Rating
10 Amp Resistive 1/3 horsepower
Supply Voltage
120 VAC
Minimum Temperature
-40°F
Maximum Temperature
257°F
Primary Material Of Construction
Alloy
Stem Material
Brass, Stainless Steel
Float Material
Stainless Steel 
Maximum Pressure
150
Mounting Configuration
Vertical
Controller Contacts
SPDT
Input
120 VAC
Mounting Size
1" NPT or 1 5/16"-12UNF-2A
Float Diameter
1"
Min. Liquid SG
0.67
Actuation Level
up to 46 7/8"
Switch Operation
Normally Open
Switch Type
SPST
Approvals
UL 353
Instructions_133702

Reed Switch Protection

Format .pdf
Size 56 KB
Download
Catalog-E_LWC700-720_thumb

Gems Sensors Catalog, LWC-700/720

Format .pdf
Size 602 KB
Download
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Should the sensitivity of my control be higher or lower in resistance than my liquid?

The sensitivity of the control should be greater than the resistance of the liquid.