Lancaster diamond 7-LXC-50B - User Manual

Lancaster diamond 7-LXC-50B

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PAGE 1

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 Softener. This unit is designed to give

you many years of trouble free service. When installed in accordance with the following instructions

and if given reasonable care, clear-soft water will be the result. For servicing and future inspection

purposes, please le this booklet with your important documents.

7-LXC-50B

7-LXC-75B

7-LXC-100B

7-LX-75B

7-LX-100B

7-LX-150B

7-LX-200B

7-LX-300B

DIAMOND LINE LX

ELECTRONIC WATER SOFTENER WITH

THE X-FACTOR CONTROL VALVE

PROGRAMMED FOR PRE-FILL BRINING OPTION

INSTALLATION, OPERATING AND

SERVICE MANUAL

Questions and Answers

J
Jesse MillerAug 17, 2025
Why is there no display on my Lancaster Water Dispenser PC board?
- R
  rowejoshuaAug 17, 2025
  The absence of a display on the PC board of your Lancaster Water Dispenser can stem from several causes: * There might be no power at the electrical outlet. If so, repair the outlet or try a working one. * The control valve power adapter may not be properly plugged into the outlet, or the power cord end isn't connected to the PC board. Ensure the power adapter is plugged in and the cord is connected. * There could be an improper power supply. Verify that the correct voltage is reaching the PC board. * The power adapter itself might be defective, in which case it should be replaced. * Lastly, the PC board could be defective and may need replacement.
S
Shelly AlexanderAug 22, 2025
Why does my Lancaster diamond 7-LXC-50B control valve regenerate at the wrong time of day?
- M
  Michael ChurchAug 22, 2025
  If your Lancaster Water Dispenser's control valve regenerates at an incorrect time, it could be due to these reasons: * A power outage may have occurred. Reset the time of day. If the PC board has a battery backup, the battery might be depleted. See Front Cover and Drive Assembly drawing for instructions. * The time of day may not be set correctly. Reset it to the correct time. * The regeneration time may be set incorrectly. Reset the regeneration time. * The control valve might be set to “on 0” (immediate regeneration). Check the programming setting and reset to NORMAL for a delayed regeneration time. * The control valve could be set at “NORMAL + on 0” (delayed and/or immediate). Check the programming setting and reset to NORMAL for a delayed regeneration time.
T
troyclementsAug 26, 2025
What to do if the time of day flashes on and off on my Lancaster Water Dispenser?
- P
  peter42Aug 26, 2025
  If the time of day is flashing on and off on your Lancaster Water Dispenser, it is likely due to a power outage. You will need to reset the time of day. If your PC Board has a battery back up present the battery may be depleted. See Front Cover and Drive Assembly drawing for instructions.
T
Trevor MurphyAug 28, 2025
Why does my Lancaster Water Dispenser control valve use too much regenerant?
- D
  Douglas DiazAug 28, 2025
  Excessive regenerant usage in your Lancaster Water Dispenser's control valve can be attributed to: * An improper refill setting. Check the refill setting. * Improper program settings. Ensure the program settings are specific to the water quality and application needs. * Frequent regeneration of the control valve. Check for leaking fixtures that may be exhausting capacity, or the system may be undersized.
T
tperrySep 2, 2025
What causes residual regenerant being delivered to service in my Lancaster diamond 7-LXC-50B?
- G
  George ThomasSep 2, 2025
  The delivery of residual regenerant to service in your Lancaster Water Dispenser could be due to: * Low water pressure. Ensure incoming water pressure remains at a minimum of 25 psi. * An incorrect injector size. Replace the injector with the correct size for your application. * A restricted drain line. Check the drain line for restrictions or debris and clean it.
C
Christina BarajasSep 5, 2025
Why is there excessive water in the regenerant tank of my Lancaster diamond 7-LXC-50B Water Dispenser?
- A
  Amy MartinezSep 5, 2025
  Excessive water in the regenerant tank of your Lancaster Water Dispenser may be caused by: * Improper program settings. Check the refill setting. * A plugged injector. Remove the injector and clean or replace it. * The drive cap assembly not being properly tightened. Re-tighten the drive cap assembly. * A damaged seal/stack assembly. Replace the seal/stack. * A restricted or kinked drain line. Check the drain line for restrictions or debris, and un-kink the drain line. * A plugged backwash flow controller. Remove the backwash flow controller and clean or replace it. * A missing refill flow controller. Replace the refill flow controller.
M
Matthew MurphySep 8, 2025
How to troubleshoot a Lancaster diamond 7-LXC-50B Water Dispenser control valve that fails to draw in regenerant?
- M
  Mia WallSep 8, 2025
  If the control valve on your Lancaster Water Dispenser isn't drawing in regenerant, consider these potential causes: * The injector might be plugged. Remove and clean or replace the injector. * The regenerant piston could be faulty. Replace the regenerant piston. * There might be a leak in the regenerant line connection. Inspect the regenerant line for air leaks. * The drain line may have a restriction or debris causing excess back pressure. Inspect the drain line and clean to correct the restriction. * The drain line could be too long or too high. Shorten the length and/or height. * There might be low water pressure. Check the incoming water pressure, ensuring it remains at a minimum of 25 psi.
K
Katie RussellSep 13, 2025
Why PC Board of my Lancaster diamond 7-LXC-50B Water Dispenser does not display correct time of day?
- A
  amorrowSep 13, 2025
  The PC Board of your Lancaster Water Dispenser might not display the correct time of day due to: * The power adapter being plugged into an electrical outlet controlled by a light switch. Use an uninterrupted outlet instead. * A tripped breaker switch and/or tripped GFI. Reset the breaker switch and/or GFI switch. * A power outage. Reset the time of day. If the PC Board has a battery backup, the battery may be depleted. See Front Cover and Drive Assembly drawing for instructions. * A defective PC Board. Consider replacing it.
M
Matthew WilliamsNov 18, 2025
What to do if my Lancaster diamond 7-LXC-50B is delivering hard or untreated water?
- H
  Heather SullivanNov 18, 2025
  If your Lancaster Water Dispenser is dispensing hard or untreated water, consider the following potential causes and solutions: * The bypass valve might be open or faulty. Ensure it's fully closed or replace it if necessary. * High water usage may have exhausted the media. Check program settings or diagnostics for abnormal water usage. * The meter could be failing to register. Remove the meter and inspect it for rotation issues or foreign material. * Fluctuations in water quality may be occurring. Test the water and adjust program values accordingly. * There might be insufficient regenerant in the tank. Add the appropriate regenerant. * The control may be failing to draw in regenerant. Refer to Trouble Shooting Guide number 12. * The regenerant level in the tank could be ins...
C
Craig CraigDec 1, 2025
What to do if the display of my Lancaster diamond 7-LXC-50B does not indicate that water is flowing?
- J
  Jessica CantrellDec 1, 2025
  If the display on your Lancaster Water Dispenser isn't showing water flow, here's what you can check: * Ensure the bypass valve isn't in the bypass position. Turn the bypass handles to place the bypass in the service position. * Verify the meter is connected to the meter connection on the PC Board. Connect the meter to the three-pin connection labeled METER on the PC Board. * Check for a restricted or stalled meter turbine. Remove the meter and inspect for rotation issues or foreign material. * Make sure the meter wire is securely installed into the three-pin connector. Verify the meter cable wires are securely installed into the three-pin connector labeled METER. * The meter itself might be defective. Replace it if necessary. * The PC Board could be defective. Consider replac...

Lancaster diamond 7-LXC-50B Specifications

General

Brand	Lancaster
Model	diamond 7-LXC-50B
Category	Water Dispenser
Language	English

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