3M NWS200M, NWS150M, NWS100M manual Service Instructions, Bottom of brine tank

SECTION 4: SERVICE INSTRUCTIONS

	Problem		Cause		Solution
1)	Hard water, (unit NOT using salt;	A.	Electrical service to unit interrupted.	A.	Assure permanent electrical service (check fuse, plug,
	liquid level in brine tank NOT too				pull chain or switch.)
	high).	B.	Timer not working.	B.	Replace timer motor.
		C.	Timer improperly set.	C.	Increase frequency of regeneration and/or salt setting.
		D.	Safety brine valve not opening.	D.	Replace safety brine valve.
		E.	Salt “bridged” in brine tank.	E.	Breakup salt.
2)	Hard water, (unit using salt; liquid	A.	Bypass open.	A.	Close bypass (replace if necessary).
	level in brine tank NOT too high).	B.	Timer improperly set.	B.	Increase frequency of regeneration, or reset timer if
					needed.
		C.	No salt in brine tank.	C.	Add salt; maintain above water level.
		D.	Excessive water usage.	D.	Increase frequency of regeneration and/or salt setting
					(See HOW TO SET TIMER).
		E.	Unit installed backwards.	E.	Reinstall unit.
		F.	Unit undersized	F.	Replace with larger unit.
3)	Liquid level in brine tank TOO	A.	Brine valve not closing.	A.	Replace brine valve.
	high.	B.	Salt setting too high.	B.	Reset timer.
		C.	Injector screen plugged.	C.	Clean injector and screen.
		D.	Drain line frozen, plugged or restricted.	D.	Free drain.
		E.	Salt "mushed" or sand from salt plugging	E.	Clean out brine tank (See Instructions).
			bottom of brine tank.
		F.	Incorrect brine line flow control (BLFC).	F.	Replace with correct flow control (See Specifications).
4)	System regenerates at wrong	A.	Power outage occurred.	A.	Reset timer.
	time-of-day.
5)	Water continuously flows to	A.	Foreign material in control valve.		Remove piston assembly and inspect bore; remove
	drain.				foreign material and check control in various regen-
					eration positions.
		B.	Internal control leak.		Replace seals and/or piston assembly.
		C.	Control valve jammed in brine or backwash		Replace piston, seals and spacers.
			position.
6)	Water tastes salty.	A.	Salt setting too high.	A.	Reset program cycle.
		B.	Cyclone (distributor) tube too short.	B.	Replace.
7)	White spots on glassware and	A.	Sodium residual resulting from water having	A.	Installation of additional water treatment equipment
	dark surfaces.		very high hardness or total dissolved solids		such as reverse osmosis or demineralization.
			(TDS).
8)	Low water pressure (low flow	A.	Iron build-up in line to water conditioner.	A.	Clean line to water conditioner.
	rate).	B.	Iron build-up in water conditioner.	B.	Clean control and add Iron-X Mineral Cleaner to resin
					bed; increase frequency of regeneration.
		C.	Well pumping sand.	C.	Install sand trap.
		D.	Pump losing capacity.	D.	Contact pump repair service.
9)	“Rotten egg” smell (from hot	A.	Magnesium rod in water heater.	A.	Replace with aluminum rod or remove.
	water ONLY).
10)	“Rotten egg” smell (from both	A.	Hydrogen sulfide ("sulfur") in water supply.	A.	Install Sulfur Reduction System.
	hot and cold water).	B.	Bacterial iron in water supply.	B.	Install Chem-Free Iron Reduction System.
		C.	Algae in water supply.	C.	Pour approximately 1/2 cup laundry bleach into brine
					well just before regeneration as frequently as neces-
					sary.
11)	Loss of resin through drain line.	A.	Air in water system.	A.	Assure that well system has proper air eliminator
					control; check for dry well condition.
		B.	Incorrect Drain Line Flow Control (DLFC).	B.	Replace with correct DLFC.

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