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Lancaster 7-LMC56-75B - User Manual

Lancaster 7-LMC56-75B
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PAGE 1
INSTALLATION,
OPERATING AND
SERVICE MANUAL
ECONO-mist WATER SOFTENER
Demand Regeneration
In the event that you need assistance for servicing your water softener, please rst contact the
professional contractor who installed the system.
Congratulations on purchasing your new Lancaster Water Filter. This unit is designed to give you
many years of trouble free service. For servicing and future inspection purposes, please le this
booklet with your important documents.
7-LMC56-75B
7-LM56-75B
7-LM56-100B
7-LM56-150B
7-LM56-200B
• • • • • •• • •
• • • • • •• • • • • • • • •
Click to buy NOW!
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Click to buy NOW!
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Table of Contents

Questions and Answers

  • W
    warnerginaAug 17, 2025
    What to do if my Lancaster Water Dispenser has excessive water in the brine tank?
    • R
      russell11Aug 18, 2025
      If there's excessive water in the brine tank of your Lancaster Water Dispenser, the following might be the cause: * The drain line flow control could be plugged, so clean the flow control. * The injector system might be plugged, so clean the injector and replace the screen. * The timer might not be cycling, so replace the timer. * There could be foreign material in the brine valve, so clean or replace the brine valve. * There might be foreign material in the brine line flow control, so clean the brine line flow control.
  • A
    ashley26Aug 20, 2025
    Why is my Lancaster 7-LMC56-75B Water Dispenser not regenerating?
    • V
      Victor ChristensenAug 21, 2025
      If your Lancaster Water Dispenser fails to regenerate, it could be due to a few reasons: * The electrical service to the unit might have been interrupted, so ensure permanent electrical service. * The timer might be defective, so replace the timer. * There might have been a power failure, so reset the time of day.
  • J
    John BanksAug 25, 2025
    How to fix loss of water pressure in Lancaster Water Dispenser?
    • D
      david34Aug 25, 2025
      A loss of water pressure in your Lancaster Water Dispenser can occur due to: * Iron buildup in the line to the water conditioner, so clean the line. * Iron buildup in the water conditioner itself, so clean the control, increase the frequency of regeneration, and use a resin cleaner. * The inlet of the control being plugged by foreign material, so remove the piston and clean the control.
  • R
    Robert ThomasAug 27, 2025
    What to do if my Lancaster 7-LMC56-75B fails to draw brine?
    • K
      Kevin ThompsonAug 27, 2025
      If your Lancaster Water Dispenser fails to draw brine, consider the following: * The drain line flow control might be plugged, so clean the drain line flow control. * The injector could be plugged, so clean or replace the injectors. * The injector screen might be plugged, so replace the screen. * The line pressure might be too low, so increase the line pressure to at least 20 psi. * There could be an internal control leak, so change the seals and spacers and/or piston assembly.
  • B
    Bradley HicksAug 31, 2025
    Why does my Lancaster Water Dispenser control cycle continuously?
    • S
      sharon46Aug 31, 2025
      If the control of your Lancaster Water Dispenser cycles continuously, it's likely due to a faulty timer mechanism, so replace the timer.
  • D
    David OlsonSep 3, 2025
    What causes iron in the conditioned water of my Lancaster Water Dispenser?
    • S
      Steven WrightSep 3, 2025
      Iron in the conditioned water from your Lancaster Water Dispenser is often caused by a fouled resin bed. Check the backwash, brine draw, and brine tank fill. Increase the frequency of regeneration and use a resin cleaner.
  • C
    Crystal JenningsSep 6, 2025
    What causes loss of resin out of drain line in Lancaster Water Dispenser?
    • S
      Stacie VargasSep 7, 2025
      Loss of resin out of the drain line in your Lancaster Water Dispenser can be caused by air in the water system. Ensure that the well system has a proper air eliminator control and check for a dry well condition.
  • D
    David MejiaSep 10, 2025
    Why does my Lancaster 7-LMC56-75B drain flow continuously?
    • W
      Whitney Mckinney DDSSep 10, 2025
      Continuous drain flow in your Lancaster Water Dispenser can be attributed to: * Foreign material in the control, so advance the control through various regeneration positions to remove it. * An internal control leak, so replace the seals and/or piston assembly. * The control valve being jammed in the brine or backwash position, so replace the piston, seals, and spacers. * The timer motor having stopped or jammed, so replace the timer.
  • J
    jacob12Nov 13, 2025
    Why is my Lancaster 7-LMC56-75B delivering hard water?
    • A
      andersonphilipNov 13, 2025
      Your Lancaster Water Dispenser might be delivering hard water due to several reasons: * The by-pass valve could be open, so close it. * There might be no salt in the brine tank, so maintain the salt level above the water level. * The injectors or screen could be plugged, so clean or replace them. * There might be insufficient water flowing into the brine tank, so check the fill time and clean the brine line plug if clogged. * The hot water tank might have hardness, so empty the hot water tank. * There could be a leak at the distributor tube, so ensure the distributor tube isn't cracked and check the O-Ring and tube pilot. * There may be an internal valve leak, so replace the seals and spacer and/or piston. * The Reserve Capacity might have been exceeded, so check the salt ...

Summary

INSTALLATION

OPTIONAL BYPASS VALVE

How to connect the optional bypass valve.

DRAIN LINE

Instructions for installing the drain line.

BRINE LINE CONNECTIONS

Connecting the brine line to the tank and control valve.

BRINE TANK OVERFLOW PRECAUTION

Installing overflow protection for the brine tank.

SANITIZING

Procedure for sanitizing the water softener unit.

SERVICE INSTRUCTIONS

TO REPLACE BRINE VALVE, INJECTORS, AND SCREEN

Instructions for replacing brine valve, injectors, and screen.

TO REPLACE BRINE VALVE

Steps to replace the brine valve with new O-rings.

TO REPLACE INJECTORS AND SCREEN

Instructions for replacing injectors and screen with new O-rings.

TO REPLACE PISTON ASSEMBLY

Detailed procedure to replace the piston assembly.

TO REPLACE SEALS AND SPACERS

Guide to replace seals and spacers in the control valve.

TO REPLACE METER

Steps for replacing the water meter module.

TO REPLACE METER COVER AND;OR IMPELLER

Instructions for replacing meter cover and impeller.

TROUBLESHOOTING PROCEDURES

Softener fails to regenerate

Addresses issues where the softener does not regenerate.

Softener delivers hard water

Solutions for the softener delivering hard water.

Unit uses too much salt

Diagnosing and fixing excessive salt consumption.

Loss of water pressure

Causes and solutions for reduced water pressure.

Loss of resin out of drain line

Troubleshooting resin loss into the drain line.

Iron in conditioned water

Addressing iron contamination in conditioned water.

Excessive water in brine tank

Problems related to excess water in the brine tank.

Softener fails to draw brine

Solutions for the softener not drawing brine.

Control cycles continuously

Fixing continuous cycling of the control unit.

Drain flows continuously

Troubleshooting continuous flow from the drain.

Lancaster 7-LMC56-75B Specifications

General IconGeneral
BrandLancaster
Model7-LMC56-75B
CategoryWater Dispenser
LanguageEnglish

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