WCS WPL DIAMOND DMS2 User manual

1
WPL DIAMOND MANUAL
Installation, operation and maintenance manual (English Language)
Standard range:
Models DMS2/ DMS3/ DMS4/ DMS5
Models DMC6/ DMC7 /DMC8 /DMC9
Blower kiosk for DMS and DMC
Additional parts depending on site condition:
Invert extensions
Sample chamber
External pumping chamber

1
STANDARD MODELS & ADDITIONAL PARTS 3
Health & Safety Precautions 3
Standard Models 7
Additional Parts 8
Invert extensions 8
DMS invert extensions 8
DMS factory-fitted body invert extension 8
DMC factory-fitted neck invert extension 9
Sample Chamber 9
External pumping chamber (EPC) 10
Non-factory fitted inverts: 11
DMS non-factory fitted neck invert extension 11
DMS & DMC - EPC non-factory fitted neck invert extension ring 12
Additional part to accompany a DMS-EPC 12
What is wastewater treatment? 13
WPL Diamond range 13
HOW THE WPL DIAMOND WORKS 14
Sizing Of The Plant Considerations: 15
Water softeners 15
Waste disposal units (WDU) 15
Grease from the kitchen 15
Condensing boilers 15
Surface run-os/storm water 15
Swimming pool and hot tubs 15
DMS range 16
DMC range 17
Planning 18
Ground conditions 18
High water tables 18
Delivery to site 19
Inspection of goods 19
WPL Diamond plant location 20
Pipework gradients 20
Blower kiosk 21
Venting options 21
Guide to equipment and material not supplied by WPL 21
Tank Installation: 22
Excavating the correct tank size trench 22
Backfilling instructions 22
Excavation guide 23
Groundworks 23
Base construction 23
Backfill material 23
Invert extensions 24
DMS body invert extensions 24
Non factory fitted DMS 460mm neck invert extension instructions 24
DMC neck invert extensions 25
TABLE OF CONTENTS

2
BLOWER KIOSKS INSTALLATION 26
DMS blower kiosk 26
DMC blower kiosk 26
Blower motor size (kW) and power 27
DMS and DMC kiosk installation location 27
DMS kiosk 28
DMC kiosk 28
Connecting tank (DMS/DMC) to the kiosk 29
Hose connections 29
Blower kiosk electrics DMS/DMC 29
Sample chamber installation 30
OPERATION & MAINTENANCE 31
Operation 31
Start up 31
Maintenance 31
Tank de-sludge frequency 31
Determining de-sludging frequency 31
Procedure for de-sludging 32
Approximate de-sludge volumes guide 32
Blower kiosk maintenance 32
Sample Chamber 32
TROUBLESHOOTING 33
DMS and DMC range 33
External Pumping Chamber 35
DMS-EPC Models 35
Installation Considerations 36
Electrical installation 37
Start Up 38
Maintenance 39
Troubleshooting 40
Hints And Tips 41
PROCESS GUARANTEE & WARRANTY 43
Process guarantee 43
Parts covered under the warranty period 43
Warranty limitations/exemptions 43
Chargeable non-warranty work 44
This manual should be retained by the owner for the lifetime of the WPL Diamond plant.
In the event of change of ownership, the manual should be transferred to the new owner.
The owner is responsible for the sewage treatment plant, ensuring that the euent
quality does not breach applicable discharge consent standards.
Please read this manual thoroughly before commencing with installation, operations
and maintenance.

3
STANDARD MODELS & ADDITIONAL PARTS
HEALTH & SAFETY PRECAUTIONS
This section describes some of the potential risks and the ways in which they
can be reduced. These guidelines do not set out or interpret the law – they
are simply a guide to improve safety during the plant’s lifecycle. The Principal
Contractor and service companies should produce their own comprehensive
health and safety plan.
What is sewage?
The term may be used to mean raw sewage, sewage sludge, or septic tank
waste. Raw sewage is mainly water containing excrement, industrial euent
and debris, such as sanitary towels, condoms, plastic etc.
Protecting workers from risks to health
Since micro-organisms are an inherent part of sewage, the hazard cannot be
eliminated so a proper assessment of risk is required. The Principal Contractor
and service provider should produce a full risk assessment before starting work.
Sensible precautions
• Ensure you understand risks through proper instruction,
training and supervision
• Seek professional guidance on inoculations that may be required
• Wear suitable Personal Protective Equipment
• Follow strict hand hygiene measures - clean water, soap,
nailbrushes, disposable paper towels, and where heavy
contamination is foreseeable, showers
• Clothing or boots contaminated with sewage must be washed
thoroughly after use
• Parents should warn children of potential hazards
The following signage should be advised:

4
Civil Installation: Installation should only be carried out by
qualified and experienced professionals who
understand sewage and drainage systems and their
obligations under the Health and Safety at Work
Act, Construction Design Management (CDM)
Regulations and the Environmental Protection Act.
Where necessary they should seek advice from a
civil engineer.
Electrical work: Electrical works must be carried out safely and
securely by a qualified electrician in accordance
with the engineering standards.
Servicing & maintenance: WPL recommends a British Water Accredited
service engineer when dealing with harmful
micro-organisms.
De-sludging & frequency: De-sludging should be carried out by professionals
holding the relevant permits to transport and
dispose of sewage sludge.
They will also be able to advise the correct
de-sludge frequency by analysing the percentage
of settled sludge (i.e. sludge volume) to the
clear liquor.
Sampling: WPL recommends sampling to be undertaken by a
British Water Accredited service engineer. Samples
can be taken from a sample chamber or an external
pumping chamber.
Dangerous gasses
inside the tank:
Sewage gases are potentially explosive and
toxic. Do not enter any of the below ground
compartments of the sewage treatment plant.

5
Delivery to site: If there are overhead electrical cables, ensure that
there is adequate clearance or that the power is
turned o. If there are any obstructions to site
delivery, please contact WPL to advise in advance.
Installer must carry out a detailed Lift Plan prior
to commencing work.
WPL deliver to the closest hard standing suitable
for a lorry or trailer. If the nearest road access for
a heavy goods vehicle is not adjacent to the site, it
is the responsibility of the contractor/ purchaser to
arrange transport from the road to the site. WPL
accepts no responsibility for the selection of lifting
equipment.
Not designed for
pedestrian walkways/
trac drive-over:
The plant lid is tested with a load at 1.0Kn/m2 and
will withstand accidental passage. Lids are not
designed for use on pedestrian walkways. Do not
allow machinery or trac to drive over the plant.
Lifting the tank: Do not lift the treatment tank without first
draining the water inside.
Tank installation: Do not use vibrating pokers.
Increasing invert
extension height:
Only one 460mm extension can be fitted to a WPL
Diamond tank. Do not stack with an additional
invert extension as this will adversely aect the
warranty and serviceability of the unit, as well as
being a Health and Safety consideration for access.
WPL DIAMOND DMS
NO ENTRY
NO ENTRY
UNLESSPRIOR WRITTEN AUTHORISATION IS GIVEN BY WPL LTD.
NOTCOPIED EITHER IN WHOLE OR IN PART OR DISCLOSED TO THIRD PARTIES
THISDRAWING IS ISSUED BY WPL LTD SUBJECT TO THE CONDITIONS THAT IT IS
PREVIOUSVERSIONS OF THIS DRAWING SHOULD BE STAMPED SUPERSEDED OR DESTROYED
DONOT SCALE THIS DRAWING - IF IN DOUBT ASK
CURRENT VERSION INFORMATION
NOTES
1. DIMENSIONS ARE SUBJECT TO DIMENSIONAL TOLERANCES.
2. ALL DIMENSIONS IN MILLIMETERS AND ALL LEVELS IN METRES
UNLESS SHOWN OTHERWISE.
DRWNDATE REVDCHKD VER REASONFOR ISSUE
PO77UX
Waterlooville
Hampshire
Units1 Aston road
WPLLtd
12345678910
12345678910
A
B
C
D
E
F
G
A
B
C
D
E
F
G
DRAWINGN0. VERSION
SITE
ORIGINATORSDRAWING NO. VERSION
VERSIONDRAWINGN0.
DRAWINGTITLE
PROJECTTITLE
SCALE MASTER
SIZE
SITENo
DRWNDATE REVDCHKD VER REASONFOR ISSUE
29/07/2020 TC AFIRST ISSUE
DRAWINGN0. VERSION
SITE
ORIGINATORSDRAWING NO. VERSION
VERSIONDRAWINGN0.
DRAWINGTITLE
PROJECTTITLE
SCALE MASTER
SIZE
SITENo
WPL A
WPL A
WPL
STANDARD DMS
N.T.S A1
WPL A
OFWPL LTD AND AS SUCH COPYRIGHT AND DESIGN RIGHTS IMPLICITLY APPLY.
ANYDESIGNS OR INNOVATIONS REPRESENTED IN THE DRAWING SPACE ARE THE SOLE OWNERSHIP
REFERENCES:
LIFTING POINTS
MARKED AS AN ENCIRCLED L
DRAWING APPROVAL
DATE
APPROVED BY
(PRINT)
SIGNED:
IFPRINTED, THE DRAWING WILL BE UNCONTROLLED
WPL DIAMOND DMS
NO ENTRY
NO ENTRY
UNLESSPRIOR WRITTEN AUTHORISATION IS GIVEN BY WPL LTD.
NOTCOPIED EITHER IN WHOLE OR IN PART OR DISCLOSED TO THIRD PARTIES
THISDRAWING IS ISSUED BY WPL LTD SUBJECT TO THE CONDITIONS THAT IT IS
PREVIOUSVERSIONS OF THIS DRAWING SHOULD BE STAMPED SUPERSEDED OR DESTROYED
DONOT SCALE THIS DRAWING - IF IN DOUBT ASK
CURRENT VERSION INFORMATION
NOTES
1. DIMENSIONS ARE SUBJECT TO DIMENSIONAL TOLERANCES.
2. ALL DIMENSIONS IN MILLIMETERS AND ALL LEVELS IN METRES
UNLESS SHOWN OTHERWISE.
DRWNDATE REVDCHKD VER REASONFOR ISSUE
PO77UX
Waterlooville
Hampshire
Units1 Aston road
WPLLtd
12345678910
12345678910
A
B
C
D
E
F
G
A
B
C
D
E
F
G
DRAWINGN0. VERSION
SITE
ORIGINATORSDRAWING NO. VERSION
VERSIONDRAWINGN0.
DRAWINGTITLE
PROJECTTITLE
SCALE MASTER
SIZE
SITENo
DRWNDATE REVDCHKD VER REASONFOR ISSUE
29/07/2020 TC AFIRST ISSUE
DRAWINGN0. VERSION
SITE
ORIGINATORSDRAWING NO. VERSION
VERSIONDRAWINGN0.
DRAWINGTITLE
PROJECTTITLE
SCALE MASTER
SIZE
SITENo
WPL A
WPL A
WPL
STANDARD DMS
N.T.S A1
WPL A
OFWPL LTD AND AS SUCH COPYRIGHT AND DESIGN RIGHTS IMPLICITLY APPLY.
ANYDESIGNS OR INNOVATIONS REPRESENTED IN THE DRAWING SPACE ARE THE SOLE OWNERSHIP
REFERENCES:
LIFTING POINTS
MARKED AS AN ENCIRCLED L
DRAWING APPROVAL
DATE
APPROVED BY
(PRINT)
SIGNED:
IFPRINTED, THE DRAWING WILL BE UNCONTROLLED

6
Tank cover: Do not leave the plant cover open for any longer
than is strictly necessary. Temporary barriers and
warning signs should be erected around any open
covers or manways as appropriate.
Blower kiosk
– surface water:
Do not allow surface water to form a pool around
the access lid or blower housing.
Additional parts
- factory fitted:
Please specify at point of order if factory fitted
parts such as invert extensions and an External
Pumping Chamber (EPC) are required.
Delivery inspection: O-loading will only be performed at the nearest
hardstanding to site that is suitable for heavy
goods vehicles. Inspect goods for damage before
placing on the ground. If damage is identified on
delivery, WPL must be notified within 24 hours. Do
not attempt to carry out any unauthorised repairs,
as this will invalidate the warranty on the goods
supplied. Once installed, WPL cannot accept any
claims for damage.
Blower kiosk installation: Any void left underneath the blower kiosk will
amplify the noise of the blower.
Blower kiosk maintenance: Please refer to the specific instruction manual
supplied with the air blower. Warranty is subject
to the manufacturer’s instruction.
Maintenance logbook: All service and maintenance for the WPL Diamond
plant must be recorded in the logbook provided.

7
STANDARD MODELS
Standard tank models DMS2, DMS3, DMS4 and DMS5 come supplied with:
• Tank as specified x1
• Tank lid with M10 x 50mm stainless steel hex bolts x2
• Weatherproof kiosk x1, comes with a low air pressure
alarm beacon and blower inside
• 10m of ¾ inch hose with hose clips x2, for the blower
Standard tank models DMC6, DMC7, DMC8 and DMC come supplied with:
• Tank as specified x1
• Tank lid with M10 x 50mm, stainless steel hex bolts x2
• Weatherproof kiosk x1, comes with a low air pressure
alarm beacon and blower inside
• 10m of ¾ inch hose with hose clips x2, for the airline from
the blower outlet to the tank air diuser

8
ADDITIONAL PARTS
Depending on site conditions, DMS and DMC models may be supplied with an
invert extension and or external pumping chamber (EPC).
Please specify on order if you require any additional factory-fitted parts such as
invert extensions and external pumping chambers.
INVERT EXTENSIONS
DMS Invert Extensions:
Standard factory-fitted body invert extension heights of 700mm or 1000mm.
For a shallow extension where the factory-fitted option is too great, a non-
factory fitted neck invert extension (height is 460mm), can be supplied loose
and cut to size on site.
If supplied with a factory-fitted invert and a deeper invert is required, please
contact WPL or your supplier
DMS factory-fitted body invert extension:
Standard factory-fitted body invert extension height options:
MODEL FACTORY FITTED SIZES
DMS2 700mm / 1000mm
DMS3 700mm / 1000mm
DMS4 700mm / 1000mm
DMS5 700mm / 1000mm
700MM (1000MM)
BODY EXTENSION
FACTORY FITTED

9
DMC factory-fitted neck invert extension:
Standard factory-fitted neck invert extension available in heights:
300mm, 600mm,1000mm.
Sample Chamber:
The sample chamber is not a
requirement.
However WPL recommends installing
one for ease of access to retrieve
samples. The sample chamber comes
supplied with 250mm removable
inspection hatch x1.
MODEL FACTORY FITTED SIZES
DMC6 300mm / 600mm / 1000mm
DMC7 300mm / 600mm / 1000mm
DMC8 300mm / 600mm / 1000mm
DMC9 300mm / 600mm / 1000mm

10
External pumping chamber (EPC)
If a deeper factory-fitted invert extension is required, please specify on order.
The EPC also has the added benefit of being used as a sample chamber.
The EPC comes supplied with:
• Pumping chamber x1
• Manhole cover x1
• High level float switch x1
• Submersible pump and integral float switch x1
• Non-return valve
• Isolation valve
• 32mm MPDE pipe outlet fitting
• Electrical junction box
• Installation handles
• Red, flashing high level alarm beacon as fitted on the kiosk
EPC with a kiosk which includes
a red and amber beacon
EPC with neck extension and kiosk which
includes a red and amber beacon

11
NON-FACTORY FITTED INVERTS
DMS non-factory fitted neck invert extension:
When on site and a deeper invert is required, you can order a 460mm invert
neck extension which can be cut down to the required height. Only one 460mm
extension can be fitted to the tank - do not stack with an additional neck invert
extension. If in doubt please contact WPL for further installation advice.
The neck invert extension is supplied with:
• 450mm ½ PVC pipe
• ½” PVC sockets x2
• Diuser pipe support bar
• Plastic push fittings for tree fixings x3
CUT LINE FOR
105mm EXTENSION
CUT LINE FOR
190mm EXTENSION
CUT LINE FOR
290mm EXTENSION
CUT LINE FOR
370mm EXTENSION
LEAVE BODY UNCUT FOR
460mm EXTENSION
SIDE VIEW
PLAN VIEW
76mm
564mm
800mm

12
DMS AND DMC - EPC non-factory fitted neck invert extension ring:
When on site and a deeper EPC invert is required - 215mm x 2 extension rings
are available to order. This is to accompany a non-factory fitted 460mm DMS
neck extension. Only one 460mm extension can be fitted to the tank - do not
stack with an additional neck invert extension.
Additional part to accompany a DMS-EPC:
EPC adapter Kit.
Please contact WPL for full listing of authorised service kits and spares.

13
WHAT IS WASTEWATER TREATMENT?
Wastewater treatment, also known as sewage treatment, is the process of
removing contaminants and suspended solids from primarily household and
commercial property waste such as toilets, showers and sinks.
WPL DIAMOND RANGE?
The WPL Diamond compact package wastewater (sewage) treatment plant is
suitable for domestic and small commercial properties in all ground conditions
where mains drainage is unavailable. With both UK and European patents, the
WPL Diamond range is also BS EN12566-3 2014 approved.
The compact range has the flexibility to be configured to meet the needs
of various population sizes. The DMS tank supports 1 up to 20 population
equivalent (PE) and the DMC tank supports 21 up to 50 population equivalent
(PE). Both can be installed in ‘wet’ or ‘dry’ ground conditions, discharging
to soakaways or watercourses.
The standard package includes a WPL Diamond tank, kiosk, alarm beacon,
blower (housed in a kiosk) and a 10 metre air hose. OEM additional parts based
on site condition are available – including external pumping chamber (EPC),
invert extensions and sample chamber.
Illustration not to scale

14
HOW THE WPL DIAMOND WORKS
Unlike the traditional septic tanks, this modern packaged wastewater treatment
plant is designed with an aerated process for todays’ increased volume of water
usage in everyday life.
The wastewater flows into the
main tank and enters directly
into the bio-chamber.
The bio-chamber is a zone where
the solids circulate continuously;
this is achieved by air rather than
mechanical or electrical parts
inside the tank.
The draft tube enables the solids
to be drawn back up into the
central aeration chamber and
re-circulated through the
treatment process.
The treated liquid then exits
through the dip pipe and is
discharged safely in to the
environment, meeting the
required consent standard.
1
2
3

15
SIZING OF THE PLANT CONSIDERATIONS
Water softeners
Salt based water softeners can significantly reduce bacteria growth in the treatment
plant and negatively aect its performance. An existing softener can be used but
regeneration should be minimised and the quality of discharge monitored. A non-
salt based softener should be used where possible. If you are installing a new
unit where one did not exist previously, seek advice from your British Water
accredited service technician provider first.
Waste disposal units (WDU)
The treatment plant should have been sized taking into account the use of a WDU
in the property (if there is one installed) as this will increase biological loading.
It is advisable to limit the use of the WDU to ensure the WPL Diamond treatment
plant operates eciently. Raw or uncooked foods should not be put through the
WDU and ideally disposed of in a composter. If an existing WDU unit was not
included in the sizing of the treatment plant, then it is advised that the WDU is
not used nor installed subsequently in the property.
Grease from the kitchen
The treatment plant should be protected from grease and fats if installed in a
property or commercial premises where catering is provided. All commercial
catering applications require the installation of adequately sized grease
separators, removal or retention systems up-stream of the treatment plant.
It is advisable to check that this provision has been made prior to installing
the treatment plant.
Condensing boilers
Discharge from condensing boilers should ideally be connected to a separate
soakaway if possible.
Surface run-os/storm water
The treatment plant should never be connected to guttering and drainage
that collects stormwater and/or surface water run-o from hard standings and
surfaces. Do not allow storm water from roofs or hard standings to enter the
treatment plant. Surface/stormwater should always be discharged to a storm
drain which is excluded from the wastewater stream from the property.
Swimming pool and hot tubs
The treatment plant should never be connected to swimming pools or hot tubs
as they contain bacteria inhibiting chemicals that will significantly reduce the
performance of the treatment plant.
Use a separate treatment for disposal of backwash waters from ancillary
equipment such as filtration and disinfectant.

16
The WPL Diamond range is based on a population equivalent. However please
ensure that the plant been sized to suit requirements using the current British Water
Flows and Loads codes of practise.
DMS range
Model Population Max Outside
Diameter
Height
to Inlet
Inlet
Invert
Depth
Height to
Outlet
Max
Height/In
Ground
Depth
Weight
Empty Total Capacity
(A) (B) (C) (D) (E) (KG) (L)
DMS2 1-6 1740 1700 630 1610 2330 155 2270
DMS3 5-11 1960 1830 760 1730 2590 192 3030
DMS4 10-15 1990 2000 780 1930 2780 210 3975
DMS5 14-20 1990 2000 780 1930 2780 210 3975
• Dimensions above shown in mm
• Deeper inverts can be accommodated with our range of standard invert extensions.
• Indicative technical drawing only
DMS kiosk power consumption
Model Blower Type Power per
blower (kW) No. of Blowers Min Power
Consumption
(kW)
Max Power
Consumption
(kW)
DMS2 ET100 0.08 10.08
DMS3 ET120 0.09 10.09
DMS4 ET150 0.16 10.16
DMS5 ET200 0.23 1 0.23
A
B
C
D
E

17
DMC range
Model Population Max Outside
Diameter
Height
to Inlet
Inlet
Invert
Depth
Height to
Outlet
Max
Height/In
Ground
Depth
Weight
Empty Total Capacity
(A) (B) (C) (D) (E) (KG) (L)
DMC6 21-27 3300 2780 570 2680 3350 380 9056
DMC7 28-35 3300 2780 570 2680 3350 380 9056
DMC8 36-45 3300 3140 580 3040 3750 460 15038
DMC9 46-55 3300 3140 580 3040 3750 460 15038
• Dimensions above shown in mm
• Deeper inverts can be accommodated with our range of standard invert extensions
• Indicative technical drawing only
DMC kiosk power consumption
Model Blower
Type
Power per
blower (kW) No. of Blowers Min Power Consumption (kW) Max Power Consumption (kW)
DMC6 SD1016 0.55 1 0.78 0.95
DMC7 SD1025 0.75 1 1.26 1.40
DMC8 SD1025 0.75 1 1.26 1.40
DMC9 SD1025 0.75 1 1.26 1.40
A
B
C
D
E

18
Planning
Please ensure all necessary permissions have been sought and granted and
ensure that due consideration/ appropriate action has been given/ taken
regarding the following:
• Planning Permission, Building Regulations, and other
regulating or interested parties
• Environment Agency, SEPA or Natural Resources Wales requirements
• The size of the plant is in line with the British Water Flows
and Loads codes of practise
Ground conditions
Ground conditions and water table level should be assessed before installation.
Please ensure local ground conditions are suitable for the installation by assessing
the following factors at your installation site:
• Risk of high water table or flooding
• Underground rivers, running sand and chemicals in the soil
• Proximity of designated protection areas such as:
- wells, bore holes, and springs used as sources of potable water
- existing non-mains sewage systems and soakaways
- water courses, ponds and lakes
- other services, pipes, cables and ducts
• Sites which are close to trees (particularly willows) or shrubs
considering root proof membrane
High water tables
Installing in an excavation that allows water to enter the plant, has a high ground
water table or is susceptible to flood conditions will cause problems during
installation and may aect the plant during de-sludging.
For installations in a high water table or clay soiled areas, backfill with a dry-lean
concrete mix to approximately 150mm below the lid.
Contd...

19
Delivery to site
O-loading will only take place at the nearest hard standing to site that is suitable
for heavy goods vehicles. If damage is identified on delivery, WPL must be notified
within 24 hours.
If the nearest road access for a heavy goods vehicle is not adjacent to the site, it is
the responsibility of the contractor/purchaser to arrange transport from the road to
the site. When lifting the unit, use webbing slings of a suitable specification, which
must be attached to the designated lifting points. WPL accepts no responsibility
for the selection of lifting equipment.
Inspection of goods
• Inspect goods for any damage before placing on the ground
• Do not attempt to carry out any unauthorised repairs
• The goods should be placed on level ground with no sharp stones or
bricks as they may cause damage
• Electrical equipment must be stored in dry, condensation free conditions
until required
If there are electrical cables overhead, ensure that there is adequate clearance
or the power is turned o.
NO ENTRY
NO ENTRY