Andritz Aqua-Screen ASC-013-013-194, Operation & Maintenance Manual, Page: 30 / 316

QUEENSLAND URBAN UTILITIES QUU CONTRACT NO: C112-022
LUGGAGE POINT STP/LUGGAGE POINT OPERATION & MAINTENANCE MANUAL
Chp2InstallSetUp.doc DRAFT: A 23-Jul-13 Page 9 of 10
CAUTION: In the event of hard frost (< 0°C), make sure that the effluent does not
freeze, even partially on the surface, when the Aqua-Screen
®
is stopped. When the Aqua-
Screen
®
starts, the presence of ice in the effluent can cause serious damage, notably the
twisting of perforated panels. When there is a risk of freezing, a temperature sensor must
be installed. This sensor can then be used to command either uninterrupted operation of
the screen (not recommended) or intermittent operation (though more frequent than usual)
to prevent solidification of the effluent upstream of the Aqua-Screen
®
.
CAUTION: During periods of frost, care must be taken to avoid an accumulation of
waste on the chute plate, since excessive accumulations of waste can cause extensive
damage to the perforated panels.
2.3.4 Electrical Connections for the Aqua-Screen
®
Electrical connections on the Aqua-Screen
®
consist of the main drive motor, brush drive motor, and
two E-Stop switches located at the operating floor level.
All electrical connections from the Aqua-Screen
®
to the control panel are the responsibility of the
owner.
2.3.5 Connecting the Geared Brush Drive Motor
Check the oil level in the gear box. Follow the supplier instructions located in chapter 4 concerning
the type of oil to be used. First check that the upper plug of the gearbox is the breather plug.
Otherwise, replace this plug by a breather plug.
Use the following procedure to install the brush drive:
1. Place a key on the drive shaft.
2. Mount the gear motor set on the drive shaft.
3. Check to be sure that there is a 3.17 mm gap on both sides of the torque arm bracket.
4. Attach torque arm and gearbox safety cover.
5. Screw down the large nuts on the torque arm. Use care with the torque arm to avoid any
misalignment.
6. Insert the bolts and place the washer on the gear box.
CAUTION: Avoid turning the screen in the opposite direction. The bristles of the foot
brush could enter into the holes of the perforated plates and jam the screen and pull
bristles from the brush itself, leaving a bald brush.
Luggage Point STP ST18 Pre Treatment (Aqua-Screen (Andritz) Operation and Maintenance Manual) General
Q-Pulse Id: TMS579 Active: 13/12/2013 Page 30 of 316