Dock-Mate DM-1003 Water Softener

Dock-Mate DM-1003 Water Softener

The Dock-Mate DM-1003 is the portable inlet/outlet-head model for yacht washdowns and freshwater tank filling. At 9 inches in diameter and 21 inches high, it provides a compact arrangement with a manual water meter and a separate recharge kit. Choose the version with or without FillFast prefilters to match your order.

Hardness treatment for routine freshwater use

The fine-mesh softening resin treats hardness that contributes to mineral deposits on fittings and finishes. This helps reduce hardness-related spotting and scale in freshwater equipment. Recharge the resin when required to keep it working effectively.

Recharge equipment and model selection

The DM-1003 manual describes a reusable salt cartridge in a separate recharge housing. That housing is recharge equipment and must not be used as a prefilter. Keep it separate from any optional FillFast equipment during normal service. For a taller alternative, compare the DM-1001, listed at 9 inches diameter by 23 inches high.

What is included

• 2 ft recharge hose
• 4 ft inlet hose
• Hardness test kit
• Recharge kit
• Recharge and capacity charts
• Manual water meter

FillFast prefilters are available as an order option. Check that the selected version includes them if required.

Use and maintenance

Use the hardness kit and the chart supplied with the unit to plan recharge intervals. The DM-1003 uses a manual meter; the generic range reference to digital metering does not mean a digital meter is included. Secure the portable unit at the dock so a pulled hose cannot drag it into the water.

The product listing states a three-year valve warranty and a two-year digital-meter warranty where a digital meter is supplied. Confirm the terms for the equipment ordered.

Browse the water softener range to compare other freshwater treatment configurations.

Frequently Asked Questions

Can I leave the DM-1003 salt-cartridge housing connected as a prefilter?

No. The DM-1003 manual identifies it as a recharge housing and says it is not to be used as a prefilter. Optional FillFast prefilters are separate equipment.

Does a full DM-1003 recharge need one or two salt-cartridge fills?

The DM-1003 owner’s manual calls for two cartridge fills for a complete recharge, followed by a five-minute freshwater rinse. Follow the supplied instructions and check that the salt has dissolved rather than relying on a fixed elapsed time alone.

Does the DM-1003 manual meter’s 1,200-gallon limit mean the resin is exhausted at that point?

No. The manual says the meter can be set up to 1,200 gallons and may need resetting to cover the capacity determined from the hardness chart. Keep track of total use across resets.

Which side should I connect the dock hose to on the DM-1003?

The model-specific quick-start guide places the meter at the supply spigot, followed by the supplied 4 ft hose to the softener inlet. Follow the inlet and outlet markings on your unit and purge air on startup.

What should I allow for when storing DM-1003 in a small locker?

The current listing gives a 9-inch diameter and 21-inch height. Allow space for the separate recharge kit and hoses as well as the softener. The included manual meter, test kit, 2 ft recharge hose and 4 ft inlet hose also need to remain accessible.