Download LC-1 Installation Instructions

Download LC-1 Brochure

The combination of any two Harwil liquid level switches and an electronic control module mounted in a weather-resistant box provide a ready-to-go system for the automatic filling or emptying of tanks or vessels.

System is composed of:

• Electronic Latching/Unlatching Control Module
• Special electronic module design eliminates false starts due to turbulent wave action.
• Nema 4 weather resistant box with two standard 1/2″ seal tight flexible conduit fittings.
• A secondary 10 amp SPDT relay output is also provided.
• Color coded with ring and labeled terminal strip.
• 120 or 240 VAC 50/60 Hz models available.
• 30 amp DPST motor contactor output for driving 1 1/2 (120 VAC)/3 HP (240 VAC) pumps.

Choose from any two Harwil liquid level switch models.

• Models for clean or contaminated fluids such as water, sea water, sewage, thin slurries, contaminated ground water, etc.
• Models for strong acids, bases, hydrocarbons, alcohols, inorganics, ketones, esters or ethers.
• Each system is provided with a complete, descriptive parts list and an installation and wiring diagram for both level switches and control module.
• Maintenance and check out requires only a standard multimeter.
• LC-1 Control Module is delivered pre-wired and is ready to hook-up to control your liquid level.

Electronic Latching Control Module Specifications:

Operating Voltage (Input)

• Voltage: 120 or 230 VAC
• Tolerance: ±15%
• Frequency: 50/60 Hz

Output

• Electromechanical relay
• Form: Single pole double throw, isolated
• Rating: 10 AMPs resistive at 240 VAC

Protection

• Transient Protected
• Dielectric Breakdown: 1500 volts RMS minimum between input, output and probe.

Environment

• Operating Temperatures: -20°C to +55°C
• Storage Temperatures: -20°C to +55°C
• Coating: Printed circuit board is conformal coated to resist moisture and corrosion.

Motor Contactor Specifications

Operating Coil

• 120 VAC or 208-240 VAC 50/60 Hz
• Inrush: 31 VA
• Continuous use: 7 VA
• Pickup: 90 VAC (120 VAC Coil)
• 170 VAC (208-240 VA Coil)
• Coil Insulation: Class B
• Coil Connections: Double Male 1/4″ quick connect
• Maximum Ambient Temperature: 155°F

Output Power Contacts

• Type: DPST – Normally Open
• Contact rating per pole:

Terminal Strip – 812 Series

Electrical Rating

• Rated voltage – 1600 Volts RMS
• Current rating – 30 AMPS

Wire Size

• Will accommodate lugs for wire sizes AWG #14 to 12

Hardware

• Screws and terminals – brass, nickel plated
• Solder terminals – brass, hot-tinned

Molded Material

• G.P. phenolic (94V-0).

UL Recognized – UL File No. E47811 CSA File No. 21356

Control Box

Rain resistant type 3R UL listed J&P Box 312J P/N 70233A

Complete operating instructions, mechanical and electrical installation drawing and a numbered parts list is supplied with each unit.

How to order:

Four items are required to order a complete control system:

• Basic Model Number: LC-1
• Level Switch Model Number: Choose from 15 standard models.
• Length of cable in feet between control module and liquid level switches. Standard cable is 1/4″ O.D. SVJ 18-2/90°C UL listed. Note: if customer is to supply cable, enter “O”
• Operating Voltage.