Aquaguard Select AWS C3500 DX Water Softener

User Manual

Important Safety Note: Read all instructions carefully before operation. Avoid pinched o-rings during installation by applying NSF certified lubricant to all seals. This system is not intended for treating water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.

Technical Specifications

ParameterValue
Model NameAWS C3500 DX
Dimension (HxDxW) mm129x435x335
TechnologyIon-Exchange Technology
Resin Volume (L)35
Multiport ValveAutomatic
Regeneration TypeAutomatic/Up Flow
Input Power Supply100-200VAC/50Hz
Salt Storage Capacity (Kg)60
Max Flow Rate (LPH)2250
Hardness (Max.) (Mg/L)2050
Iron (Max.) (Mg/L)<1
Turbidity (Max.) (NTU)1
Working Temperature (°C)5-49
Min-Max Working Pressure (Kg/cm²)1.5-3
Total Unit Weight (Kg)50

Softener System Dimensions

Diagram showing the dimensions of the Aquaguard Select AWS C3500 DX Water Softener Tank. It includes three views: a front profile indicating a height of 1194mm and a depth of 335mm, a side profile indicating a height of 1290mm and a width of 335mm, and a top-down view showing the tank's width as 435mm and 467mm.

Unpack & Inspect Your Water Softener

NOTE: Handle the softener unit with care. Do not drop the unit or set on sharp, uneven projections on the floor. Do not turn the softener unit upside down. If there is a severe loss in water pressure when the softener unit is initially placed in service, the softener tank may have been laid on its side during transit. If this occurs, backwash the softener to 'reclassify' the media.

Accessories Contents:

  • 2 x Straight Adaptor (C/W O-ring)
  • 1 x Bypass Tool
  • 1 x Grease Packet
  • AC/DC Adaptor
  • 1 x Manual (Aquaguard Select Water Softener USER MANUAL - AWS C3500 DX)

Pre-installation & Installation Instructions

Contact a Eureka Forbes Authorized agent to have a complete water analysis and check your water hardness on your water supplier; this will keep your water softener in proper working condition.

Diagram (Fig. 1) Description: Schematic diagram illustrating the water flow and connections for the water softener. It shows 'Cold Soft Water' and 'Hot Soft Water' lines connected to a 'Water Heater' and the 'Softener'. 'Raw Water' is shown entering the system, passing through a 'Filter' and 'Water Meter', then to the 'Softener'. A 'Drain' connection is shown from the softener. 'Hard Filtered Water' is also indicated. 'Ground Strap' connections are shown for electrical safety.

Installation Instructions:

Location: Determine the correct location for the AWS C3500 DX Water Softener. Select the location with care, considering the following conditions:

  1. Locate as close as possible to the water supply source.
  2. Locate as close as possible to a floor or laundry tub drain.
  3. The softener should be located in the supply line before the water heater. Temperatures above 120°F can damage softeners.
  4. Do not install the softener in a location where freezing temperatures occur, as freezing may cause permanent damage and void the factory warranty.
  5. Allow sufficient space around the unit for easy servicing.

Additional plumbing is required if your water source is a community water supply, a public water supply, or if you wish to bypass water used for a geothermal heat pump, lawn sprinkling, out-buildings, or high demand applications (Refer to Fig. 1).

Tools Required for Installation:

  • Two adjustable wrenches.
  • 5/8" OD drain line is needed for the drain.
  • Additional tools may be required for modifications to home plumbing.
  • Always install the included bypass valve, or 3 shut-off valves, to allow water to be turned off to the softener for repairs while maintaining water supply to the house pipes.

Water Bypass

In case of emergency or softener maintenance, you can isolate your water softener from the water supply using the bypass valve located at the back of the control. In normal operation, the bypass is open with the ON/OFF knobs aligned with the INLET and OUTLET pipes. To isolate the softener, rotate the knobs to the BYPASS position. You can use your water-related fixtures and appliances while bypassing the softener, but the water will be hard. To resume treated service, rotate the knobs to the SERVICE position.

Please ensure bypass knobs are completely open; otherwise, unsoftened water could bypass through the valve.

Diagram Descriptions:

  • SERVICE: Shows water flowing straight through the valve, connecting inlet and outlet pipes directly.
  • BYPASS: Shows water flow diverted around the softener, connecting inlet and outlet pipes to bypass ports.
  • BYPASS NOT ALLOWED POSITION: Marked with a red cross, indicating an incorrect or disallowed configuration.

IntelliMix Technology

This feature allows adjustment of the output water hardness. If the unit is installed in a water supply with less input hardness, the output water may be too soft. Adjusting the IntelliMix nut clockwise can increase the hardness of the output water.

Diagram Descriptions:

  • Clockwise Rotation: Rotate the IntelliMix nut in a clockwise direction. The larger the rotation angle, the higher the water hardness in the product valve.
  • Counter-Clockwise Rotation: Rotate the IntelliMix nut anti-clockwise to close it completely.

Programming Guide

Keypad Configuration:

  • [MENU]: This function enters the basic set up information required at the time of installation.
  • [CONFIRM]: This function is to press and select one item to change and accepts the values if changed.
  • [UP]/[DOWN]: This function is to scroll up or down the programming items and increase or decrease the values of the settings while in the programming mode.

System Standby Display:

The screen displays Current Time, Last Regen. Time, and Regen. Mode.

Main Menu Display Icons:

  • [Time Icon]
  • [Region & Language Icon]
  • [Hardness & People Icon]
  • [Holiday Mode Icon]
  • [Advanced Settings Icon]
  • [System Information Icon]

Advanced Settings Display

System Regenerate Based On Automatic Calculation: Icons represent Regeneration Mode, Regeneration Time, Regeneration Days, Data Entry, Regeneration Cycle, Restore Defaults.

System Regenerate Based On Manual Settings: Icons represent Regeneration Mode, Regeneration Time, Water Capacity, Regeneration Days, Regeneration Cycle, Restore Defaults.

Parameters:

ParameterDescription
TimeCurrent time setting.
LanguageSystem language used on the valve display; 10 different language options available.
Water HardnessThis value is the water hardness of the raw water supply; used to calculate system capacity.
People NumberNumber of people in the household and the calculated reserve capacity. A regeneration will be scheduled when remaining capacity reaches zero.
Holiday ModeWhen set to ON, the system performs a backwash and rinse if there is no water flow detected after 7 days. Backwash and rinse duration can be set in the Regeneration Cycle.
Calendar ClockThe unit initiates a regeneration at the next pre-set regeneration time based on the interval of days between regeneration days.
Meter Immediately Regen. ModeThe unit initiates a regeneration immediately after the system capacity remaining reaches zero.
Meter Delayed Regen. ModeWhen the system capacity remaining reaches zero, the system initiates a regeneration at the next pre-set regeneration time.
Meter Override Regen. ModeWhen the volume remaining drops below the system capacity, the system regenerates at the set regen time or when Regen. days preset has passed, whichever occurs first.
Regen. TimeControls the time of day when a regeneration will start.
Water UsageThis setting is the water usage of average of months.
Water CapacityThis setting is the total water volume the system can treat after one complete regeneration.
Resin VolumeThis setting is the amount of ion exchange media used in the system; used to calculate system capacity and refill time.
Salt AmountThis setting determines the salt dosage used per regeneration; should match the BLFC flow washer. Used to calculate refill time.
Refill Flow RateThis value is used to calculate the refill time.
Salt EfficiencyThis setting is the amount of capacity which a certain amount of salt can restore; used to calculate system capacity and refill time.
Reserve CapacityThis value is used to calculate the reserve capacity (Reserve Capacity = No. People x Daily Reserve).
BackwashControls the backwash duration during regeneration cycle.
Brine CycleControls the brine duration during regeneration cycle.
Rinse CycleControls the rinse duration during regeneration cycle.
Refill CycleControls the refill duration during regeneration cycle.
Restore DefaultsRestores settings to the factory default.

System Information Page

When you enter system information setting, system key information can be viewed on this page.

System Information Displayed:

  • Total Regenerations: 0 Times
  • Total Treated Water: 0 Gallons
  • Regeneration Time: 02:00 AM
  • Water Capacity: 01050 Gallons
  • Capacity Remaining: 01050 Gallons
  • Backwash Time: 15 Minutes
  • Brine Time: 50 Minutes
  • Rinse Time: 10 Minutes
  • Refill Time: 02.7 Minutes
  • Current Flow Rate: 00.00 GPM
  • Peak Flow Rate: 00 00 GPM
  • Software Version: V1.0

Note: In 'Total Regenerations', 'Total Treated Water', and 'Peak Flow Rate' pages, press and hold the 'CONFIRM' button for 3 seconds to reset the value to zero.

Operation During a Power Failure:

In the event of a power failure, the valve will keep track of the time and day. Programmed settings are stored in non-volatile memory and will not be lost. If power fails during regeneration, the valve will finish regeneration from its current point once power is restored. If the valve misses a scheduled regeneration due to a power failure, it will queue a regeneration at the next scheduled regeneration time once power is restored.

Start-up Instructions

  1. Add two liters of water into the cabinet at the time of installation. This is for the unit to achieve proper capacity in the first time of regeneration.
  2. Plug the power adaptor into a 220-240 VAC supply. Connect the power cord to the valve.
  3. When power is supplied to the control, the screen may display 'Advancing to Service Wait Please' while it finds the service position.
  4. Manually step the valve to the Backwash position. If the screen is locked, press and hold the [MENU] key for 3 seconds to unlock. Follow the instructions below to step the valve to Backwash position. As the valve arrives at Backwash position, unplug the power and let the valve stay at Backwash position.
    • 4.1 Press and hold [MENU] key for 3s to unlock.
    • 4.2 Press and hold [CONFIRM] key for 3s to advance to MANUAL Regen menu.
    • 4.3 Press [CONFIRM] key again to let the option flash.
    • 4.4 Press [DOWN] key to advance to the IMMEDIATE option.
    • 4.5 Press [CONFIRM] key to confirm and press [MENU] key to have a manual regeneration.

    Note: If you select the 'DELAY' option, the valve will start to regenerate at the closest day's REGEN. TIME (default is 02:00).

  5. Slowly open the inlet knob on the bypass valve with the bypass tool supplied and allow water to enter the unit. Allow all air to escape from the unit before turning the bypass fully open. Then, allow water to run to drain for 3-4 minutes or until all media fines are washed out of the conditioner, indicated by clear water in the drain hose. Open a cold soft water tap nearby and let water run for a few minutes or until the system is free of foreign material resulting from the plumbing work. Close the water tap when water runs clean.
  6. Press any button to advance to the BRINE position. When it arrives, press any key to skip the BRINE cycle. Press any button to advance to the RINSE position. Check the drain line flow. Allow the water to run for 3-4 minutes or until the water is clear.
  7. Press any button to advance to the REFILL position. Check that the valve is filling water into the brine tank. Allow the valve to refill for the full amount of time as displayed on the screen to ensure a brine solution for the next regeneration.
  8. The valve will automatically advance to the SERVICE position. Open the outlet knob on the bypass with the bypass tool supplied. With the bypass open, open the nearest treated water faucet and allow the water to run until clear.
  9. Add salt into the cabinet. Put 10 kgs of crystal water softener salt in the C3500 DX softener cabinet. The unit will automatically fill the water to the correct level when it regenerates.
  10. Program unit.
CAUTION: LIQUID BRINE WILL IRRITATE EYES, SKIN AND OPEN WOUNDS - GENTLY WASH EXPOSED AREA WITH FRESH WATER. KEEP CHILDREN AWAY FROM YOUR WATER CONDITIONER.

Maintenance Instructions

Check the Salt Level:

Adequately check the salt level. Remove the lid from the cabinet or brine tank, and ensure the salt level is always above the brine level. NOTE: You should not be able to see water in the cabinet or brine tank.

Adding Salt:

Use only clean salt labeled for water conditioner use, such as crystal, pellet, nugget, button, or solar. The use of rock salt is discouraged because it contains insoluble silt and sand which build up in the brine tank and can cause problems with the system's operation. Add the salt directly to the tank, filling no higher than the top of the brine well.

Bridging:

Humidity or the wrong type of salt may create a cavity between the water and the salt. This action, known as 'bridging', prevents the brine solution from being made, leading to your water supply being hard.

If you suspect salt bridging, carefully pound on the outside of the plastic cabinet or pour some warm water over the salt to break up the bridge. This should always be followed up by allowing the unit to use up any remaining salt and then thoroughly cleaning out the cabinet. Allow four hours to produce a brine solution, then manually regenerate the softener.

Brine Solution Disposal:

Do not pour/dispose of the brine solution on lawns, septic tanks, or use for watering plants. Dispose properly in a safe place or intended drain line.

Figure 5 Description: Illustration depicting salt bridging in a water softener brine tank. It shows a layer of salt with a cavity formed in the middle, separating the water from the salt above.

Warranty Terms and Conditions

The goods are warranted against defects arising from faulty designs, workmanship, and materials for 12 months from the date of installation or 15 months from the date of sale, whichever is earlier, subject to the following conditions:

  1. The customer will notify the company, in writing, promptly of any defects noticed and give the company or its authorized agent adequate opportunity to inspect, test, and remedy them. The customer will deposit the goods, if required, with the company's office/service centre along with the original invoice.
  2. The inspection and test reports of the company's office/service centre will be final and binding under the warranty for determining defects, repairs/alterations required or carried out, or certifying work of the goods thereafter.
  3. Aquaguard Select Water Softener may require initial setting post-installation, depending on varying water conditions and power supply. For any service requirement post-installation, please contact the company's service centre.
  4. The company or its authorized agent will be entitled to retain any defective part replaced under the warranty.
  5. Notwithstanding anything to the contrary contained or implied by this warranty:
    • a) The company's liability under this warranty is limited to the first sale of the goods by the company to the customer and will not apply or extend to any secondary sale of goods by the customer.
    • b) The company's liability under this warranty is limited only to defects in the goods which occur under the condition of normal operation of the goods and their proper and prescribed use. The warranty does not cover or extend to defects determined by the company or its authorized agents or resulting from or attributable to negligence, abuse, misuse, faulty care, operation or maintenance, or repairs, alterations to the goods or any part thereof by others, or the use of the goods on an electrical supply for which they are not designed, or damage caused by lightning or other electrical disturbances or interruptions.
    • c) The company's liability under this warranty remains valid only if the goods are duly installed by the company or its authorized agency at the location specified in the invoice and such installation is undertaken by the company or its authorized agent or franchise.
    • d) Consumable items like sediment filter and regeneration media are not covered under this warranty.
    • e) The customer will have no claim against the company, its employees, and its authorized agents or franchise under or pursuant to this warranty in respect of death or injury to the customer or any other person or loss or damage to any property caused by or due to equipment failure, breakdown or accident, fire or operation, or utilization of the goods otherwise than in accordance with the User Manual or due to any other cause or circumstances beyond the control of the company.
    • f) The company's liability, under this warranty, shall in no event and under no circumstances exceed the price paid by the customer to the company for the goods stated in the invoice.

General Definitions:

For the purpose of this warranty, the following expressions have the meanings stated:

  1. The "Goods" mean the goods described in the order form.
  2. The "Customer" means the original purchaser of the goods from the company.
  3. The "Company" means "Eureka Forbes Limited".
  4. "General terms and conditions" mean the terms and conditions agreed upon by the customer and the company printed on the order form.
  5. "Invoice" means the invoice issued by the company to the customer describing the goods and indicating, inter alia, the total purchase price thereof and name of the customer.
  6. "User Manual" means the instructions for installation, use, and maintenance contained in the leaflet supplied by the company.

Post-warranty:

  1. The customer may be offered a yearly service contract at the prevailing company rates and terms.
  2. If the customer does not wish to enter the service contract, they have the option of calling the company's service centre and having the Aquaguard Select Water Softener serviced on an actual basis, i.e., by paying the labour cost and the spares needed to attend to that service/complaint call at the prevailing company rates. Such service will be rendered by the company in towns/places where the company has its service centres.
  3. The company will provide free servicing of the goods brought to its service centre by the customer, provided that all expenses of transporting the goods to and from the service centre shall be borne by the customer directly.
  4. If during such servicing it is necessary for the company to replace or repair defective components or parts, the customer shall be required to pay the same as per the company's prevailing price list.
  5. Eureka Forbes Limited reserves the right to offer an Annual Maintenance Contract/ensure availability of spares only up to 7 years from the date of invoice.

Add Salt:

The system needs salt to regenerate its capacity. Please check the salt storage in time during usage and keep unmelted salt in the brine tank. Open the system's slide and put salt into the tank equably. It is recommended you add 3-4 kg salt in each exhausted cycle. Do not pour/dispose of the brine solution on lawns, septic tanks, or use to water plants. Dispose properly in a safe place / intended disposed drain line.

Contact Information

Eureka Forbes

Call Eur Helpline: 1860-266-1177

Buy online: www.eurekaforbes.com

Corporate Office: B1/B2, 701, 7th Floor, Marathon Innova Marathon NextGen, Ganpatrao Kadam Marg, Lower Parel, Mumbai - 400 013, India.

WhatsApp No.: +91 703 988 3333

E-mail us at: customercare@eurekaforbes.com

Models: C3500 DX, AWS C3500 DX Automatic Aquaguard Water Softening Systems, AWS C3500 DX, Automatic Aquaguard Water Softening Systems, Aquaguard Water Softening Systems, Water Softening Systems, Softening Systems, Systems

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