Graf Optimax-Pro User manual

1
Contents
1. General notes Page 2
1.1 Safety
1.2 Labelling/Tagging obligation
2. Installation requirements
& Performance Specifications Page 2
2.1 Optimax External pedestrian weight resistant
2.2 Installation of filter lift out handle
3. Transport and storage Page 3
3.1 Transport
3.2 Storage
4. Technical data Page 3
4.1 Installing with a Graf Carat
4.2 Installing with a Graf Platin
5. Excavation, Commissioning
& Servicing Page 5
5.1 Preparation of the excavation
5.2 Placing in the excavation and laying
the connections
5.3 Telescope installation
5.4 Back Filling
5.5 Commissioning
5.6 Service
Disclaimer:
Products in this specification manual must by regulation be installed by licensed and registered trade people. The
manufacturer/distributor reserves the right to vary specifications or delete models from their range without prior notification.
Dimensions and set-outs listed are correct at time of publication however the manufacturer/distributor takes no responsibility for
printing errors.
Graf Optimax Pro
External Filter
Subject to plumbing
requirements the Graf
Optimax External Filter is
suitable for installation
with all brands of under-
ground rainwater tanks.
The points described in these
instructions must be followed
correctly. If not correctly ob-
served, any right to claim on
the guarantee may be re-
fused. For all additional
GRAF articles purchased
there are separate installation
instructions enclosed in the
transportation packing.
Any missing instructions
must be requested directly
from Reece ASAP.
The installation must be car-
ried out by a licensed
installer.
Installation and maintenance instructions for the
GRAF Optimax Pro –External Filter 350-750sqm
Graf Optimax External Filter

2
1.1 Safety
When working on the installation, the appropriate accident prevention regulations must be
followed. For safety reasons, especially when installing a tank, it is important that a second
person is present.
Furthermore, when carrying out assembly and installation work, inspection, maintenance and
repairs, all work regulations and norms must be followed. You will find the advice in the ap-
propriate sections of these instructions.
The installation of the system and/or single equipment parts must be carried out by a li-
censed installer.
The complete system must always be out of operation and guarded against unauthorised
use when carrying out work on the plant or parts of the system.
The tank cover must always remain closed except when working in the tank, otherwise there
exists a very high danger of accidents. The seating and condition of the cover must be
checked on a regular basis.
The GRAF Company offers an extensive range of accessories that are all compatible with
one another and may be used to construct a complete system. The use of other manufactur-
ers’ accessories can impair the function of the system and liability for any resulting damages
will no longer be covered under the guarantee.
1.2 Labelling/Tagging obligation
All pipe work and outlets of the water systems are to be labelled with the words “Rainwater
or Non Potable in accordance with AS/NZ 3500.1.”either in words or graphically, so that
after years of use, an accidental connection to the drinking water system is prevented. Even
when correctly labelled it may possibly be mistaken, for example by children. For this reason,
all the outlets of the systems process water must be fitted with vandal proof tapware.
2.1 Optimax –External Filter pedestrian area
- The Filter with the green telescopic attachment and cover may only be installed in garden
areas that are not traversed by traffic.
- The amount of short-term load of the polyethylene cover is max. 150 kg, the long-term
area load max. 50 kg
- Lockable child proof cover
- Variable installation depth 570mm to 1050mm.
The Optimax Pro Filter is suitable for roof areas up to 350m² with DN100 connections
and 750sqm with DN150.
- Filter insert mesh width .35mm
- Provides over 95% water yield
- Minimal height offset (200mm) between inlet and outlet
2.2 Installation and removal (lift out handle)
To facilitate removal of the filter unit in cases of deep installation,
The removal –lift out handle (supplied) should be attached to the filter
by using the screws of the upper connecting rod. See picture.
1. General notes
2. Installation requirements & performance specifications

3
3.1 Transport
During transport the filter must be well secured against slipping or falling. If the Filter is to be
secured for transportation with webbing straps, it is to be ensured that the filter remains un-
damaged.
Stress and excess loading caused by impact are to be avoided. Under no circumstances is
the filter to be rolled or slid over the ground surface.
3.2 Storage
Any temporary storage of the filter must be on an appropriate level surface without sharp
objects. During the storage it is important to avoid damage caused by the surrounding envi-
ronment or foreign objects.
4.1 Graf External Optimax Pro Filter installed with a Graf Carat Tank
3. Transport and storage
4. Technical data

4
4.2 Graf External Optimax Pro Filter installed with a Graf Platin Tank
All dimensions are in mm
4. Technical data cont.…

5
5.1 Preparation of the excavation
So that sufficient working room is available and the filter can be correctly installed, the sur-
face area of the excavation should exceed the filter dimensions on all sides by approximately
50 mm. The excavation hole must be level and smooth. The depth of the excavation must
be measured so that the final installation depth of the filter bottom is at a maximum 1050
mm. The base of the hole requires a layer of smooth sand approximately 10 mm deep.
Important: The setting down surface for the filter must be level to ensure an optimal perfor-
mance.
5.2 Placing in the excavation and laying the connections
The filter is installed in the prepared excavation and is then connected to the relevant pipes.
Attention: It is important that all the pipes to be installed have a gradient of at least 1% in
the flow direction without sagging or bending downward. To effectively reduce the rate of flow
of the incoming water, about 2 metres of 100mm horizontal pipe should be installed before
the filter. This has the effect of improving filtration and so increasing the amount of water
able to pass through the filter into the tank.
Important: The diameter of the supply pipe (100mm) is the same diameter of the pipe to the
tank and to the storm water run-off.
5.3 Telescope installation
The telescope is pressed into the filter housing from above. For excavation depths < 930 mm
the telescopic attachment and in some circumstances, the filter housing must be shortened.
It is important to ensure that the inlet pipe is not obstructed in any way by the telescope when
installed.
Before pushing in the telescope the profiled sealing ring is placed in the housings recess.
The telescope and the sealing ring must be thoroughly coated with the lubricating soap in-
cluded in the delivery (use no lubrication that is mineral oil based).
Attention: If the lubricating soap becomes dry and the telescope becomes difficult to move
then there is the danger that the sealing ring will be forced out of its recess. Before filling, the
sealing ring must be checked once again that it is seated correctly in position. The telescope
must be sufficiently embedded and supported that no forces are transferred to the housing.
5.4 Back Filling
Important: Before and during the filling, the horizontal position of the filter must be checked.
Smooth sand is required as backfill and must be tampered down lightly with a compacting
machine or hand held tamper in 30cm layers. Care must be taken during the embedding to
ensure the filter is not damaged. To ensure that no forces are applied to the filter housing,
the telescope must be well embedded and compacted.
5.5 Commissioning
Before commissioning the system the filter surface is to be thoroughly cleaned with a brush
and a solvent based cleaning fluid. Alternatively the filter sieve may be cleaned in a dish-
washer (40° max - 60°). Any dirt that gets into the filter housing during the assembly must be
thoroughly removed.
5.6 Servicing
The complete system is to be inspected at least every 3 months for leakage, cleanliness and
stability. The filter surface should be cleaned approximately every 3 months or according to
local conditions.
5. Excavation, Commissioning & Servicing