WP3861 - Water filter PHILIPS - Free user manual and instructions

Product Type	Under-sink water filter
Model	WP3861
Brand	Philips
Filtration Technology	Activated carbon + sediment filter
Filtration Stages	2
Flow Rate	2 L/min
Capacity per Cartridge	2000 L
Operating Pressure	0.1-0.4 MPa
Operating Temperature	5-38 °C
Dimensions (W x H x D)	10 x 30 x 10 cm
Net Weight	1.0 kg
Power Supply	None (mechanical)
Installation	Under sink, requires 3/8" connection
Certifications	NSF/ANSI 42, 53
Contaminants Reduced	Chlorine, taste, odor, sediment, lead, cysts
Cartridge Life	6 months or 2000 L
Replacement Cartridge	Philips WP3961
Maintenance	Replace cartridge every 6 months; clean housing
Warranty	2 years

Frequently Asked Questions - WP3861 PHILIPS

How often should I replace the filter cartridge?

Replace the cartridge every 6 months or after treating 2000 liters, whichever comes first.

What contaminants does the WP3861 remove?

It reduces chlorine, taste and odor, sediment, lead, and cysts (NSF/ANSI 42 and 53 certified).

Do I need a plumber to install it?

Basic installation requires connecting to a 3/8-inch cold water line. It can be a DIY task, but a plumber is recommended if you're unsure.

Does the filter require electricity?

No, it is a mechanical system that works under normal water pressure without power.

How do I clean the filter housing?

Unscrew the housing, wash with warm soapy water and a soft cloth. Rinse thoroughly. Do not use abrasive cleaners.

What is the flow rate of the WP3861?

The flow rate is approximately 2 liters per minute under standard pressure.

Can I use it with well water?

It is designed for municipal tap water. For well water, a pre-filter is recommended to remove heavy sediment.

What is the warranty period?

Philips offers a 2-year warranty on the filter system against manufacturing defects.

Where can I buy replacement cartridges?

Use the Philips WP3961 replacement cartridge, available online or at major retailers.

How do I know when to change the filter?

Most users notice a drop in flow rate or a return of chlorine taste. A calendar reminder at 6 months is recommended.

USER MANUAL WP3861 PHILIPS

White Philips washing machine with a metal handle and spout, no visible text or symbols on the device itself.

Diagram of a folded panel with grid patterns and directional arrows indicating movement (no text or symbols)

1

ENGLISH 6

INDONESIA 16

BAHASA MELAYU 25

TIÊNG VIÊT 35

繁體中文 44

General description (Fig. 1)

A Non-woven cloth
B Silver-coated granular activated carbon
C Filter cartridge
D Cap of filter cartridge holder
E Viewing window
F Filter cartridge holder
G Water selection lever
H Water purifier housing

I Stainless steel screen

J Rubber washer

K Adapter

1 A-type

2 B-type

3 C type

4 D-type

L Attachment nut

Important

Read this user manual carefully before you use the appliance and save it for future reference.

Before daily use

• To prevent quick clogging of the filter cartridge, let the water run at the unfiltered setting for around 5 seconds before every use.
• If the water is highly coloured or turbid due to work on your water network, do not let the water run at the filtered setting until the water is clear.
• Cautions:
  1 Let the water run at the filtered setting for 10 seconds before use each day.
  2 Let the water run at the filtered setting for 60 seconds before use if you have not used the water purifier for more than two days.
  3 If you are not going to use the water purifier for more than two weeks, put the filter cartridge in the refrigerator to ensure its good

performance. When you start using the water purifier again, let the water run at the filtered setting for 1 minute before use. If the filter cartridge emits an unpleasant smell, replace it with a new one.

Water temperature

• Do not let water hotter than 65^ C run through the water purifier at the unfiltered setting or hotter than 50^ C at the filtered setting. This may damage the appliance.
• Do not let the water purifier freeze.

Applications

• Only use the appliance to filter water that meets drinking water standards.
• Do not block the filtered water outlet or connect other devices to it.
• If the water pressure is very high, reduce the water flow of the tap to prevent damage to the cartridge.
• Keep the water purifier away from heat to avoid distortion or breakage.
• Do not tamper with the water purifier.
• This appliance does not soften water.
• Do not use filtered water in aquariums. Tap water, filtered or unfiltered, can be harmful to fish.
• Do not store purified water.
• Domestic appliance for drinkable water treatment.

Features

• The water purifier removes chlorine, unpleasant smells and tastes, as well as large sediments from your tap water.
• The silver-coated activated carbon prevents bacteria growth inside the filter.
• The replacement reminder sticker helps you remember when to replace the filter cartridge.
• The 2ltrs/min high-speed initial flow rate gives you plenty of clean water instantly.
• The water selection lever offers you a choice of three water flow types: unfiltered spray, unfiltered stream or filtered spray.

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• The eight tap-mounting adapters supplied with the water purifier allow easy installation on almost any type of tap.
• The bayonet-type mount ensures quick, easy and secure filter cartridge replacement.

Preparing for use

Before installation

• Before you install the water purifier, make sure all tap-mounting adapters you require are present.
• The tap must have a diameter of 13mm-25mm.
• Determine what type of tap you have and select the appropriate adapter.
• The adapters supplied make the water purifier suitable for almost any kitchen tap. However, the water purifier may not fit some uncommon types of taps.
• The tap water pressure has to be between 0.7kgf/cm ^2 (7 metres of water column/70kPa) and 3.5kgf/cm ^2 (35 metres of water column/350kPa). If you use the water purifier at a water pressure outside this range, either the filtered water flow will be extremely low or the water purifier will get damaged.

Installation A-type adapter

- For taps with a round spout with a diameter of 16mm, 17.5mm or 19mm (Fig. 2).

1 Remove the attachment nut and the adapter from the water purifier housing (Fig. 3).
2 Pass the attachment nut over the tap spout (Fig. 4).
3 Place the matching adapter (A-type) over the tip of the spout. The 16mm adapter is packed with the water purifier. Replace it with the 17.5mm adapter or 19mm adapter to fit the diameter of your tap (Fig. 5).
4 Screw the attachment nut firmly onto the water purifier housing (Fig. 6).

Installation B-type adapter

- For taps with an aerator (threaded outside) (Fig. 7).

1 Remove the attachment nut and the adapter from the water purifier (Fig. 8).
2 Remove the aerator cap from the tap and pass the attachment nut over the spout. Take out the original adapter and screw the matching adapter (B-type) onto the tap (Fig. 9).
3 Tighten the adapter further with a coin (Fig. 10).
4 Firmly screw the attachment nut onto the water purifier housing (Fig. 11).

Installation C-type adapter

- For taps with an aerator (threaded inside) (Fig. 12).

1 Remove the attachment nut and the adapter from the water purifier housing (Fig. 13).
2 Remove the aerator cap from the tap. Take out the original adapter and screw the matching adapter (C-type) onto the tap through the attachment nut. (Fig. 14)

If water leakage occurs, wind Teflon tape round the adapter's thread before you screw it onto the tap.

3 Tighten the adapter further with a coin (Fig. 15).

4 Firmly screw the attachment nut onto the water purifier housing (Fig. 16).

Installation D-type adapter

- For taps other than A, B or C. (Fig. 17)

1 Remove the attachment nut and the adapter from the water purifier housing (Fig. 18).
2 Take out the original adapter and screw the D-type adapter onto the water purifier housing. (Fig. 19)
3 Push the water purifier housing onto the tap from below and tighten the 4 screws evenly (Fig. 20).

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4 Screw the attachment nut firmly onto the water purifier housing (Fig. 21).

Make sure the rubber washer is firmly pushed against the tap to prevent water leakage.

Installing the filter cartridge

1 Make sure the tap is closed.
2 Set the water selection lever to the unfiltered stream position (Fig. 22).
3 Tilt the filter cartridge holder 90° backwards and insert it into the water purifier housing (Fig. 23).
4 Pull the cartridge holder upwards until it is in upright position. (Fig. 24)

Using the appliance

1 Make sure that the water purifier housing and the filter cartridge holder are properly installed.
2 Turn the water selection lever to the desired setting ('click').

Filtered spray

Select this setting for drinking, washing vegetables or fruits and for cooking.

Tip: We advise you to boil the filtered water before you drink it.

1 Turn the water selection lever until the filtered spray symbol is aligned with the indicator (Fig. 25).

Do not let water hotter than 50^ C run through the water purifier at this setting, as this may damage the water purifier.

If you filter water between 35^ C and 50^ C, the water may have an unpleasant smell. The filter cartridge has absorbed this smell during filtering, but releases it again if you filter water hotter than 35^ C.

Unfiltered spray

Select this setting for washing dishes and other jobs that require a gentle water flow.

1 Turn the water selection lever until the unfiltered spray symbol is aligned with the indicator (Fig. 26).

Do not let water hotter than 65^ C run through the water purifier at this setting, as this may damage the water purifier.

Unfiltered stream

Select this setting for a strong water flow.

1 Turn the water selection lever until the unfiltered stream symbol is aligned with the indicator (Fig. 22).

Do not let water hotter than 65^ C run through the water purifier at this setting as this may damage the water purifier.

Cleaning

Never use scouring pads, abrasive cleaning agents or aggressive liquids such as petrol or acetone to clean the appliance. These substances may cause cracking, discolouration or distortion.

1 Clean the water purifier housing and the inside and outside of the filter cartridge holder and cap regularly with a damp cloth.

Replacement

New filter cartridges are available under type number WP3961.

Replace the filter cartridge if it is clogged to prevent damage to the water purifier.

1 For optimal performance of the water purifier, replace the filter cartridge if either of the following situations occurs:

A You have used the filter cartridge for six months.

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B The non-woven cloth of the filter cartridge has turned rust brown or dark grey.

Look through the viewing window in the cap of the filter cartridge holder to see the colour of the non-woven cloth.

C The volume of purified water decreases substantially.
D The filtered water still has an unpleasant smell after purification.

2 To replace the filter cartridge, close the tap and set the water selection lever to the unfiltered stream position. (Fig. 22)
3 Tilt the filter cartridge holder 90° backwards and pull it off the water purifier housing. (Fig. 27)
4 Unscrew the cap of the filter cartridge holder (Fig. 28).

When you remove the cap of the filter cartridge holder, water leaks from the water inlet of the holder.

5 Remove the filter cartridge from the holder. (Fig. 29)
6 Put a new filter cartridge in the holder (Fig. 30).
7 Screw the cap back onto the filter cartridge holder (Fig. 31).
8 Tilt the filter cartridge holder 90° backwards and insert it into the water purifier housing (Fig. 23).
9 Pull the cartridge holder upwards until it is in upright position. (Fig. 24)
10 Write down the date on which you have to replace the filter cartridge on the replacement reminder sticker.

Note: The filter cartridge holder and the cap can be purchased as service parts.

Replacement reminder sticker

- The water purifier and each replacement filter cartridge comes with a replacement reminder sticker. Write the date on which you have to replace the filter cartridge on the sticker and stick it on the outside of the cap. This helps you remember when to replace the filter cartridge. (Fig. 32)

Note: The actual lifetime of the filter cartridge strongly depends on the quality of the local tap water.

Guarantee & service

If you need service or information or if you have a problem, please visit the Philips website at www.philips.com or contact the Philips Customer Care Centre in your country (you find its phone number in the worldwide guarantee leaflet). If there is no Customer Care Centre in your country, go to your local Philips dealer or contact the Service Department of Philips Domestic Appliances and Personal Care BV.

Frequently asked questions

This chapter lists the questions most frequently asked about the appliance. If you cannot find the answer to your question, contact the Customer Care Centre in your country.

Question Answer

Why does water leak from the attachment nut?	Perhaps you have not installed the water purifier properly. Reinstall the appliance according to the instructions in this user manual.
	Perhaps the attachment nut or the tap-mounting adapter is damaged. Contact an authorised Philips service centre.
	Perhaps the tap water pressure is higher than specified.
	You may need to wind some Teflon tape around the thread of the adapter.
Why is the water flow weak at the unfiltered setting?	Perhaps the stainless steel screen under the rubber washer inside the water purifier housing is clogged. Clean it with a toothbrush and rinse it.

Question Answer

Why is the water flow is weak at the filtered setting?

Perhaps the filter cartridge is clogged. Replace the filter cartridge.

Perhaps the tap water pressure is lower than specified.

Product specifications

Product name and type number	Pure water on tap WP3861
Type Direct tap mount
Major filter components	Silver-coated granular activated carbon
Initial water flow rate	2ltrs/min. (water pressure at 1kgf/cm2(10 metres of water column/ 100kPa), water temperature at 20°C)
Chlorine reduction capacity	WP3961-2,500ltrs (water density at 2ppm)
Filter lifetime Approximately 6 months at 10ltrs a day (the actual lifetime depends on the quality of the local water and the water pressure)
Replacement filter cartridge	WP3961
Minimum water pressure	0.7kgf/cm2(7 metres of water column/70kPa)
Maximum water pressure	3.5kgf/cm2(35 metres of water column/350kPa)
Accessories WP3961 filter cartridge, 8 tap-mounting adapters, replacement reminder sticker

Appliance dimensions 105mm × 139mm × 83mm (H × W × D)

Packaging dimensions 140mm × 170mm × 84mm (H × W × D)

Weight Approximately 370g

Country of origin Japan

*Above specifications are according to Japanese JIS S 3201 Standard.

Gambaran umum (Gbr. 1)

A Kain non-tenun
C Kartrid filter
E Jendela tinjauan
F Penahan kartrid filter
G Tuas pilihan air
H Rangka pemurni air
I Kasa baja tahan karat
J Pencuci karet
K Adaptor
1 Jenis-A
2 Jenis-B
3 Jenis-C
4 Jenis-D
L Mur sambungan

B Butiran karbon aktif bersepuh perak

D Tutup penahan kartrid filter

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