Pentek US-1500 User Manual download pdf (Page 5)

Electronic Monitor Operations

The US-1500 system includes an electronic monitor that alerts you

when it is time to change your ﬁlter cartridges. Both ﬁlter cartridges

should be changed at the same time to ensure that the monitor works

properly. The monitor measures actual water usage and is powered

by a single 9-volt battery.

How the Electronic Monitor Works

The ﬁlter cartridges in the US-1500 should be replaced every 1,000

gallons. The electronic monitor uses a combination of lights and

alarms to alert you at different stages during the life of the ﬁlter

cartridges. The lights are visible on the front panel of the ﬁlter system,

to the left of the blue reset button:

0-950 gallons

No alarm. Green light ﬂashes when water is turned on.

950-1000 gallons

Alarm BEEPS ONCE when water is turned on. Yellow light ﬂashes

when water is on.

1000+ gallons

Alarm BEEPS TWICE when water is turned on. Red light ﬂashes when

water is on.

Low or Dead Battery

No alarm. No lights. Replace battery.

NOTE: Gallons used while battery is dead will register on meter when

battery is replaced

NOTE: To extend battery life, any sequence that includes any beeps

will not be repeated if water is turned on again in less than 15 minutes.

Reset Button

The blue reset button is located on the front panel of the system.

This button should only be pressed during initial installation or when

new ﬁlter cartridges are installed. After pressing and releasing

the button, you will hear two beeps followed by a sequence of two

green, two yellow, and two red lights. This combination of beeps and

lights indicates that the system has properly reset the internal gallon

counter.

Replacing the Battery

The battery should be replaced every time new ﬁlter cartridges are

installed or after 12 months of operation, whichever comes ﬁrst.

Replacing Battery and Filters at the Same Time:

Install new 9-volt battery as described in Step Eight: Installing the

Battery on p. 4. Make sure to press blue reset button on front panel of

system when ﬁnished.

Replacing Battery Only:

Remove the old battery and install the new battery. DO NOT press the

reset button on the front panel of the system when ﬁnished.

Filter Cartridge Replacement

• Filter cartridges the US-1500 will last about 1,000 gallons or twelve

months before they need to be replaced. Filter cartridge life

varies depending on usage, and/or water conditions. Changes in

taste, color, and ﬂow of the water being ﬁltered indicate that the

cartridge should be replaced.

• Read all instructions before replacing ﬁlter cartridges.

1. Turn off cold water supply and open the drinking water faucet to

release pressure from system.

2. Unscrew and remove bottom of ﬁlter housing. Locate and remove

large O-ring, wipe clean of lubricant, and set aside. Repeat for

second housing.

3. Discard used ﬁlter cartridges. Using a non-abrasive sponge or

cloth, scrub the bottom of ﬁlter housings, O-ring grooves, and

caps with dish soap and warm water. Rinse thoroughly. Fill bottom

of each housing 1/3 full with water. Add 1 tablespoon of household

bleach and scrub to disinfect.

4. Lubricate O-rings with silicone grease. Insert each O-ring in

groove and press into place.

NOTE: This step is important to ensure a proper housing seal.

Make certain each O-ring is seated level in its groove or a leak

may occur.

5. Screw bottom of housings with bleach water onto caps without

ﬁlter cartridges and hand-tighten. DO NOT OVERTIGHTEN.

6. Turn on water supply. Let faucet run for about 10 seconds, then

turn off faucet and let stand for 20-30 minutes.

7. Turn on faucet and allow bleach water to run out (about 3-5

minutes).

8. Turn off water supply to system and open faucet to release

pressure. Remove bottom of housings and empty of water.

9. Insert each ﬁlter cartridge in bottom of appropriate ﬁlter housing:

P-250 Cartridge Set: white with green end caps in left housing,

gray plastic cartridge in right housing

NOTE: The ﬁlter cartridges should be installed with the black

gasketed ends pointing up.

10. Screw bottom of housings onto caps and hand-tighten. DO NOT

OVERTIGHTEN. Make certain cap standpipe slips into cartridge.

11. Open water supply and turn on drinking water faucet to release

pressure in system. Let faucet run for 5 minutes to remove trapped

air and carbon ﬁnes. Check system for leaks before leaving

installation.

NOTE:

• It is recommended that you run the tap at least 20 seconds prior to

using water for drinking or cooking purposes.

• Initially, ﬁltered water may appear cloudy. If you set a glass

of water on a level surface, you should be able to watch the

cloudiness disappear from the bottom of the glass upwards.

This harmless cloudiness results from the release of trapped air

within the cartridge and will disappear within a few weeks after

installation.

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Pentek US-1500 User Manual Page 5

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