Kenmore ULTRAFILTER 500 Care Of Your Reverse Osmosis System, Prefilter And Post Filter Cartridges

- CARE OF YOUR REVERSE OSMOSIS SYSTEM -

To keep your reverse osmosis system operating and producing higil quality" water, you must make sure supply water is Nways within the lhnits shown in the

specifications. Good supply water helps to assure longer Fifefrom the RO membrane cartridge, prefilter and postfilter cartridges. However, each of these will wear out in time and need replacement.

This reverse osmosis system contai_ a replaceable

treatment component critical for effective removal of

total dissolved solids. The monitor faucet featttre

provides continuous analysis of fhe systems perfof nmnce. For systems not eqtripped with the monitor

faucet function, it is highly recommended that you have your water tested at least every 6 months to verify your system is performing properly. Test kits are

available by calling 1-800-826-8553 exL 47, or check ghe water testing section of yottr local phone directory

4. Insert new cartridges with o-ring* seals towards

the top, and with lubricated* o- rings in place, turn to the right to reattach the sumps.

5.Remove and replace batteries to reset counter and timer. (monitor models).

*Note: Use a lubricant approved for use on a potable water supply.

FIG. 9	_	mounting
		washers(2)

prefilter

cartridge

(cartridge e-

ring seals on

this end) \

If the RO assembly is wall mounted, you may be able to replace parts with the assembly left on the wN1. If not, simply lift the RO assembly from the momlting washers and lay on the cabhlet floor when replacing

the prefilter and post filter cartridges and RO mem- brane.

Note: To prevent spillage, place a contmner under the RO assembly, or put the RO assembly in a con- tmner to catch the water.

CAUTION: Before disconnecting parts, be sure to

close the water supply valve to the RO.

PREFILTER AND POST FILTER

CARTRIDGES

You must replace the prefilter cartridge often to Fo- rcer the RO membrane front being destroyed by chlorine, and / or from plugging with sediments hi your water supply. If the water supply contmns both chlorine and sediments, replace the prefilter cartridge at least every 6 months of product water use. Replace more often than 6 months if it begins to pkug with sedi- ments.

If the water has sediments onl$; with no chlor*me, you

may notice a slower making of product water as the

prefilter collects the sediments. When this occurs, re-

place the prefilter cartridge. Also _Iace the post fiIter cartridge.

To replace the filter cartridges (see FIG. 9):

1. Turn offthe water supply and open the RO faucet to relieve pressure.

2.Remove (turn to the left) both sumps from the filter

heads. Be careful...the sumps are full of water.

3.Remove and discard the inner cartridges in a prop- er manner. Flush the insides of the stunps with fresh water. Do not lose the large o-ringseals.

12

	Re gartrid9e
	(cartridge o-ring
	seals on this end)
e-ring sen	I_etfilter
	_artridge
_1
	(cartridge o-ring
	seals on this end)
	SUnlp

Turn sumps in the direction of the arrow to remove. Turn 013130- site way to instNI e_d tighten.

RO MEMBRANE CARTRIDGE

The life of the RO membrane cartridge depends

mostly on the pH of the	supply	water	to	the RO	sys-
tem (see specifications).	Cartridge	Fife is		shorter	with
higher pH. For ex_mple,	if supply	water	pH is from		6.8

to 7.7, the cartridge may Iast for well c_er one yean How- eveg cm'tridge Iifi'_may be as short as 6 months if the pH

is as high as 8.5 to ! 0. Higher pH weakens the cartridge

membrane and causes pin-hole leaks.

It's time to replace the RO cartridge when the red

LED flashes or the production rate and/or quality" of

product water drops. Product water may begin to

taste different or bad, indicatiug solids mid organics

are passing through the RO membrane. To be sure it is the RO cartridge, replace the prefilter and postfilter

cartridges first.

To replace the RO cartridge (see FIG. 9):

1. Turn offthe water supply and open the RO faucet

to relieve pressure.

continued

Problems, Questions? Call 1-800-426-9345 Kenmore Water Line