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Operation and maintenance manual for
Hydrotech Discfilter HSF31-series
4.1.3.Foundation
The filter should be fitted on an even
surface with appropriate torsional and
structural strength.
Foundation bolting is required
The filter must be properly levelled in both
directions (see figure 4.1).
600 mm wide walkways should be fitted
around the filter in order to provide easy
access to the filter for service work.
Open areas between the filter frame and
the concrete chamber must be covered to
avoid access to moving parts and to stop
objects from falling into the filter.
4.2.Emergency.by-pass
A special inlet channel (optional) can be used for the emergency by-pass.
In some applications an external by-pass must be arranged in case of e.g. a
power failure to avoid a too high differential pressure across the filter cloth.
4.3.Electrical.connection
Electrical connection must be performed according to local regulations. Check
the settings of the motor protectors against amperage readings on the motors
(see Appendix A & D).
4.4.Equipotential.Earth.Bonding
The Hydrotech Discfilter and its associated equipment should be protected
using a suitable Equipotential Earth Bonding system. This is very important to
avoid galvanic corrosion. Typically use a cable with an area of 10-16 mm
2
. The
cable should be attached to the same electrical potential as the drive system.
WARNING!
All electrical works should be installed by a qualified and competent
electrically trained person.
Figure 4.1 Filter installation
!
