Doulton HIS User manual

HIS Push-Fit Filter
Installation and
Conditioning Instructions
Parts & Service Availability:
Important – Always use genuine Doulton®replacement filter elements and
components to guarantee the manufacturer’s performance claims.
Contact your local Doulton®distributor for sales, service, replacement parts and for
the range of available replacement filter elements.
1. Installation
Note – The filter cannot be used for the treatment of hot water and should only be
connected to the cold water supply.
1.1 Selecting a Position for the Filter
The filter should be fixed inside a unit or to a wall with the screws and bracket
provided, near to the incoming water supply and the user tap. Make sure that the
filter is located so that the connecting pipework does not have any sharp bends
in it. For easy servicing of the filter there should be at least 4 inches of
clearance below the body of the filter to allow for removal of the filter element
for cleaning or renewal.
1.2 Connecting Pipework & Fittings
The filter is supplied with 3/8” (inch) pushfit connections. Medium density
polyethylene tubing is recommended.
Important - Tubing must conform to the following tolerances:
Tubing Dimensions:
Head Type Nominal Tolerance
+ -
3/8” 3/8” .001” .004”
An isolation valve and non-return valve should be fitted upstream of the filter (these
are required by law in the UK). The isolation valve may be used to regulate the
maximum flow rate in accordance with the requirements of the filter element used.
Having selected the appropriate fittings, a user tap should be installed in
accordance with the manufacturer’s instructions in a convenient position and then
connected to the filter.
1.3 Assembling and Fixing the Filter
Fit the bracket to the filter head using the 4 retaining screws provided and then
having chosen a position for the water filter, mark the position of the bracket fixing
screws onto the wall/unit.
Attach the filter head to the wall/unit with the 2 fixing screws provided.
With the water supply isolated connect the upstream and downstream pipework
to the filter head ensuring that the arrow on the top of the head is showing the
correct direction of flow and that piping/fittings are pushed into the push fittings to
a minimum of 18mm (.75”) depth.
Ensure that a sealing washer is fitted onto the filter element threaded mount stem
and screw the filter element into the filter head until washer resistance is felt. Do
not over-tighten.
If there is less than 10 inches clearance below the base of the filter housing, place
the filter body in position over the filter element before screwing the filter element
into the head.
Moisten the O ring on the filter body, check that it is located correctly and then
screw the filter body to the filter head. Hand tighten only.
2. Conditioning the Ceramic Filter
The filter system should now be ready for pressurisation. With the user tap in the
on position, gradually open the upstream isolation valve until the flow from the tap
has stabilised at the recommended flow rate.
Close the user tap and ensure that the system is watertight.
In order to remove any loose particles resulting from the manufacturing process or
from cleaning the filter element, it is recommended that the first supply of filtered
water should be run to waste for 10 minutes.
www.doulton.com
A GENUINE WATER FILTER
A GENUINE
WATER FILT ER

For a new filter element, the maximum flow rate will be achieved once the
ceramic filter element has become fully saturated; to allow the filter element to be
conditioned to the source water, allow the unit to stand unused for a further 24
hours and then run the first 15 litres of water to waste.
The filter is now ready for use.
Due to filtration of particulate contaminants from the water during use, the flow
of the water from the filter may deteriorate over a period of time. To restore the
water flow to its normal level, simply remove, clean and replace the filter element
as follows:
3. Servicing the Filters
It is important to wear rubber gloves or wash your hands thoroughly before and
after servicing the filter and filter element.
Removal, cleaning and reinstallation/replacement of the filter element is carried out
as follows:
With the upstream isolation valve turned off, vent any pressure by opening the user
tap.
Place a bowl of under the filter body and unscrew the filter body, which will be full
of water. Lower the body into the bowl. The filter element can now be unscrewed
from the filter head and cleaned in accordance with the manufacturer’s instruction
or replaced as described in Section 1.3.
When the filter element have been re-installed, wipe the filter housing clean with a
damp cloth and refill the filter system as described in Section 2.
Cleaning/Sterilising the System
To clean the housing wipe externally with a warm damp cloth. The following
substances should be avoided:
• Strong oxidising agents such as bleach or Milton solution
• All strong acidic materials including some descalents
• Strong alkaline material
A filter element that has reached the end of its life would be indicated by a
reduction in the taste quality of the filtered water. The filter element should be
replaced in accordance with the rated service capacity, which would typically give
a period of six months usage.
Manufactured by:
Doulton Water Filters, Newcastle, Staffordshire, ST5 9BT, United Kingdom.
Telephone: [phone]
Fax: [phone]
Email: fi[email protected]
Website: www.doulton.com
Doulton®is a trademark registered to Fairey Industrial Ceramics Limited.
W2393021 Issue 3 October 2016 Fairey Industrial Ceramics Limited trading as Doulton Water Filters. www.doulton.com
A GENUINE WATER FILTER
A GENUINE
WATER FILT ER