ATB AQUA 8 Manual

Innovations for clean water
AQUA 8
Installation/Operating Instructions

Installation/Operating Instructions AQUA 8
ATB WATER GmbH, üdstraße 2, 32457 Porta Westfalica, Germany, www.atbwater.com
Version: 14.01.2022 / Page 2 of 19
!!! IMPORTANT !!!
PRIOR TO USING THE UNIT
 Anybody involved MU T imperatively read and fully understand the unit’s O&M manual.
 It is most important that the O&M manuals remain with the operator for future reference.
GENERA
 No foreign objects such as hard materials, plastic bags, etc... are allowed in the basins.
These objects can cause extensive damage and/or for example create unbalance to the
impeller.
P EASE NOTE
 This O&M manual is valid for both, the AQUA 8-M with single-phase alternating current
motor and for the AQUA 8-T with high-voltage current motor. Instructions which refer to
the AQUA 8 in general are valid for both versions of the product.

Installation/Operating Instructions AQUA 8
ATB WATER GmbH, üdstraße 2, 32457 Porta Westfalica, Germany, www.atbwater.com
Version: 14.01.2022 / Page 3 of 19
Contents
1 Introduction ............................................................................................................... 4
1.1 General and afety Information ................................................................................ 4
1.2 Product characteristics ............................................................................................. 4
2 Installation and Commissioning .............................................................................. 5
2.1 Installation instructions ............................................................................................. 5
2.2 Electrical connection and start-up ............................................................................. 6
3 Maintenance .............................................................................................................. 8
3.1 AQUA 8-M ................................................................................................................ 8
3.1.1 Periodical check ............................................................................................... 8
3.1.2 Changing the propeller .................................................................................... 9
3.2 AQUA 8-T ............................................................................................................... 10
3.2.1 Maintenance requirements and intervals ..................................................... 10
3.2.2 Inspections performed on-site on a regular base: ...................................... 10
3.2.3 Overhaul .......................................................................................................... 11
3.2.4 Service in case of alarm ................................................................................ 11
3.2.5 Inspect the stator housing............................................................................. 11
3.2.6 Change the propeller ..................................................................................... 12
3.2.7 Change the oil ................................................................................................. 14
ENC OSURE I: Technical Data ..................................................................................... 17
AQUA 8-M .................................................................................................................... 17
AQUA 8-T ..................................................................................................................... 18
ENC OSURE II: Declaration of Conformity ................................................................. 19

Installation/Operating Instructions AQUA 8
ATB WATER GmbH, üdstraße 2, 32457 Porta Westfalica, Germany, www.atbwater.com
Version: 14.01.2022 / Page 4 of 19
1 Introduction
1.1 General and Safety Information
The AQUA 8 surface aerator has been developed for the aeration and agitation of wastewater in
wastewater treatment plants based on the activated sludge process. The machine is suitable for
mechanically pretreated, domestic wastewater and commercial wastewater, so far as it is
comparable with domestic wastewater, which are free of solid and fibrous matter. Any other use is
not allowed and leads to the loss of the guarantee and liability. The aerator may not run dry.
Changes in the device or the opening of the engine part are prohibited. The aerator may never be
pulled, transported or fastened at the connecting cable. Avoid absolutely abrasions and defects in
the connecting lead. Do not operate any equipment that has a damaged connecting line /
connection cable or plug, which indicates a faulty function, has been dropped or has been
damaged in any way.
Only the manufacturer or an authorized technician may repair defective engines. Moreover, only
original spare parts may be used. All other changes in the device lead to the loss of the guarantee
claims.
With the intended employment there are no hazards emanating from the equipment. Nationally
applicable regulations as well as technical data are to be observed.
Explanation of the warnings used:
Attention! Hazard due to Hazard due to
rotating parts electrical voltage
1.2 Product characteristics
 Agitation and aeration using only one unit
 Pre-treatment in a settling facility required
 Process easy on activated sludge flocs
 Maximum surface 7.5m², maximum tank diagonal 3.5m
 Minimum water depth 1m, maximum water depth 2.5m
 eparable float for ø 600mm tank openings
 Motor with propeller individually removable
 ingle phase motor for 230V, 50/60Hz with condenser (AQUA 8-M) and three-phase
alternating current motor for D-230/Y-400V, 50/60Hz (AQUA 8-T)
 Motor protection class IP68
 Motor insulation class F
 Motor completely submerged, thus even ambient conditions
 All components made from AI I304 or PE
 15m connection cable with 5m protective hose (AQUA 8-M) resp. 10m connection
cable (AQUA 8-T)
 High energy efficiency
 imple handling
 Low maintenance

Installation/Operating Instructions AQUA 8
ATB WATER GmbH, üdstraße 2, 32457 Porta Westfalica, Germany, www.atbwater.com
Version: 14.01.2022 / Page 5 of 19
2 Installation and Commissioning
2.1 Installation instructions
The aeration unit AQUA 8 consists of a
separable float with suction pipe (1) and the
motor unit with propeller and distributor (2). All
materials are made of V2A stainless steel or
plastic and are thus suitable for use in
wastewater.
For tank openings (3) smaller than 800mm, the
two-part float can be opened on one side and
inserted into the tank. It must then be screwed
back into the tank. The clear diameter of the tank
opening should be at least 600mm. When
delivered, both halves of the float are usually
only screwed together hand tight.
The intake pipe is to be screwed together with
the float to form a unit. To do this, turn the
pontoon upside down and screw the stainless-
steel pipe to the float using the retaining
brackets. To do this, use the corresponding
threaded inserts on the pontoon and the drill
holes in the stainless-steel pipe.
The float with suction pipe is then positioned on
the tank bottom centrally under the maintenance
opening.
Then the positions for the heavy-duty anchors of
the guide chains are measured in the area of the
tank opening so that the chains can run vertically
at a distance of approx. 75 cm through the guide
elements on the float and can hang down to the
tank bottom.
For the assembly of the guide chains, the
turnbuckles are turned up to maximum length
and fastened to the heavy-duty anchors with ring
nuts and shackles. The vertically hanging guide
chains determine the lower fixing points. The
lower heavy-duty anchors are now mounted here
and connected to the lower chain ends. The
chain must be shortened to the required length.
Attention Free chain ends can be sucked in by
the aerator and cause damage.
The guide chains are then tensioned over the
turnbuckles and fixed with the lock nut.