Hydrotech HSF31 Series User manual

Discfilter
HSF31-series
Operation and
Maintenance Manual
Revised: 07-12-21 EN
TYPE: 2H, 2F, 2H, 2F
SERIAL NO: ....................................

Operation and maintenance manual for
Hydrotech Disclter HSF31-series
Contents


1.1 Safety alert symbols ...................................................................5
1.2 CE Marking ................................................................................5
1.3 Redesigned equipment ..............................................................5
1.4 Personnel requirements .............................................................5
1.5 Emergency shutdown .................................................................6
1.6 Electrical safety...........................................................................6
1.7 Safety instructions ......................................................................6

2.1 Overview .....................................................................................7
2.2 Identication of the lter ..............................................................8

3.1 Receiving ....................................................................................9
3.2 Storage .......................................................................................9
3.3 Lifting ..........................................................................................9

4.1 Installation site ..........................................................................10
4.1.1 Outdoor installation ..........................................................10
4.1.2 Foundation .......................................................................10
4.2 Emergency by-pass ..................................................................10
4.3 Electrical connection .................................................................10
4.4 Equipotential Earth Bonding .....................................................10
4.5 Pipe connections ...................................................................... 11
4.6 Backwash system ..................................................................... 11

5.1 Start-up procedure ....................................................................12
5.2 Control settings .........................................................................13
5.2.1 HAND mode – continuous rotation ..................................14
5.2.2 AUTO mode – automatic level control .............................14
5.2.3 Adjusting the level sensor ................................................15
5.2.4 Setting the time relay .......................................................15
5.2.5 Setting the level relay .......................................................15
5.3 Backwash system .....................................................................15
5.4 Drum rotation ............................................................................15
5.5 Re-tightening of bolts ................................................................15

Operation and maintenance manual for
Hydrotech Disclter HSF31-series

6.1 Intended use .............................................................................16
6.2 Non-foreseen use .....................................................................16
6.3 Filtration and backwash process ..............................................16

7.1 Backwash system .....................................................................17
7.1.1 Removing and cleaning the spray nozzles ......................17
7.1.2 Checking the spray nozzles for wear ...............................18
7.2 Bearings....................................................................................19
7.2.1 Lubrication .......................................................................19
7.3 Filter panels ..............................................................................20
7.3.1 Change the lter panels ...................................................21
7.4 Drive chain ................................................................................22
7.4.4 Check the drive chain for wear ........................................22
7.5 Gear motor................................................................................22
7.6 Rubber sealing..........................................................................22
7.7 Backwash strainer ....................................................................22
7.8 Maintenance schedule ..............................................................23


. Technical specications
. Spare parts list
 Dimensional drawing
 Circuit diagram for control system (optional)
 Control cabinet component list (optional)
 The gear motor
 Backwash Strainer (optional)
 Backwash pump (optional)
 Frequency converter

4
Operation and maintenance manual for
Hydrotech Disclter HSF31-series

This manual comprises instructions for operation and maintenance of
Hydrotech Disclter HSF31-series.
The manual should always be available to the personnel who work with the
equipment.
It is important that:
The manual and other applicable documents are preserved during the
whole life span of the equipment. The manual and other applicable
documents constitute a part of the equipment.
This manual is carefully studied by all users of the equipment, and always
kept at hand for future reference

5
Operation and maintenance manual for
Hydrotech Disclter HSF31-series

Hydrotech Disclter HSF31-series are designed for safe operation when
properly in-stalled and used according to the enclosed instructions. The
equipment must be properly installed and adapted according to local
regulations The machine equipment is designed to be handled by several
operators. Before use of or maintenance on this equipment, please read the
applicable parts in the manual.
Pay attention to all warning symbols in this manual. Serious personal injury
or damage to the machine can be inicted if this information is disregarded.
Consider all electric equipment as alive.
Consider all tubes and pipes as pressurised.
Before maintenance, set the safety switch (see Figure 1.7) to OFF and lock
it in the OFF position by means of a padlock.
Only authorised personnel may perform service and maintenance.

In this manual a warning symbol is used to call attention
to potentially hazardous situations:
WARNING!
Information about potential personal injury and/or
damage to the equipment.
Safety warning labels (see Figure 1.1) are afxed to the
Disclter lids to warn personnel to keep hands and ngers
away from moving parts of the lter.

This equipment is CE marked ensuring that the
equipment is designed, manufactured and
described in conformity with the Machine
Directive of EU 98/37/EU (AFS 1994:48).

The CE marking does not cover components not approved by Hydrotech AB,
used in redesigning or rebuilding of the equipment.
Warning signs and the CE marking shall be placed fully visible. If any part of
the equipment with a sign is being replaced, a new sign must be attached at
the same place. Damaged signs and CE markings must be replaced promptly.

In order to avoid personal injury and machine damages only personnel who
are trained in accordance with your local supplier’s instructions may perform
service and maintenance. Service and maintenance personnel may only
handle parts of the equipment for which they are trained.
During maintenance and adjustment before operation, the operator can work
within the safety fence and in the restricted area.
Figure 1.1
Moving parts can
cause injury.
!
Figure 1.2
The CE
marking

6
Operation and maintenance manual for
Hydrotech Disclter HSF31-series

The lter is equipped with a safety switch (see Figure 1.7). In an emergency
shutdown situation, set the safety switch to OFF (0).
In the event of a power failure, set the safety switch to OFF to prevent the lter
to accidentally start rotating when power returns.

Electrical connection must be performed by an authorized electrician and in
accordance with local regulations. See also Appendix D.
The lter tank or frame must be connected to earth.
A lockable safety switch must be installed if the control box is mounted far
away from the lter (further away than 7 m within EU countries).

The lter is activated by setting the safety switch to ON (1) and then selecting
HAND or AUTO on the selector switch on the panel front. Setting the selector
switch to 0 stops the lter.
WARNING!
Set the safety switch
to OFF (0) and lock it
in the OFF position by
means of a padlock
before starting any
work on the lter.
WARNING!
Access to the lter by
unauthorised persons
must be strictly
prohibited. An outdoor
installation should be
fenced off.
WARNING!
The lter can suddenly
start rotating if
automatic control is activated. Do not touch any moving parts. Do not
climb up on the lter construction when the lter is activated.
Protection guards are tted around the power transmission. Make sure these
are correctly and rmly tted at all time.
WARNING!
The vapours from the chemical dosage system contain substances that
are harmful. The vapours from the backwash water may also contain
harmful substances. Use suitable personal protection according to local
regulations.
Measured noise level from the lter is less than 74 dB(A). If necessary, use
suitable personal protection according to local regulations.
Safety switch
OFF (0) / ON (1)
Mode selector switch
HAND / AUTO
Figure 1.7 Switches of the control cabinet (optional)
Pump OFF (0)
Pump ON (1)
!
!
!
!

7
Operation and maintenance manual for
Hydrotech Disclter HSF31-series


INLET SIDE
MOTOR SIDE
Figure 2.1 Parts of Disclter HSF31-series
Control cabinet
(optional)
Drive unit
Filter
segment
Backwash
pump
(optional)
Disc Piping
(optional)

8
Operation and maintenance manual for
Hydrotech Disclter HSF31-series

Filter type, serial number and year of manufacture can be found on the afxed
data plate. Filter type and serial number is also specied on the front page of
this manual.
The lter designator denitions are:
Mejselgatan 6, 235 32 Vellinge, Sweden
Web: www.hydrotech.se E-mail: [email protected]
XXxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xx xxx
xxxxFiltertype:xx xi x
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxwxxxxxxxxxxxxxxxxxxxxxxxxx xxxxx xx
xxxxSerial No.x xx
xx xxxx x
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxwxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxx xxx
xxxxYear:xxxxx x x
xxx xxi x
xxxxxxxxxxxxxxxxxxxxx x
HSF3110/8-2F
4634
2008 Figure 2.2
Filter data plate
Type of microscreen lter
HSF = Hydrotech Disc Filter
Drum diameter incl. discs
31 = 3100 mm
Max. number of discs
10 = The drum can hold 10 discs
Number of installed discs
8 = 8 discs are installed
Model
H = Aquaculture model
F = Industrial model
Disclter type
1 = Filter with tank
2 = Filter without tank
HSF 31 10 / 8 -2 F

9
Operation and maintenance manual for
Hydrotech Disclter HSF31-series


When received, the equipment should be thoroughly inspected for any
damage that may have occurred during transport.
The delivery note, manual and the spare part set are attached to the
equipment.
Check all parts against the packing list. For safe transport it is necessary that
some parts are not assembled when delivered. Handle fragile parts with care.

Should it be necessary to store the equipment for a longer period (several
days or more) certain precautions should be taken in order to prevent
unnecessary damage to the equipment:
Preferably, the equipment should be stored inside, in a room with
temperature above freezing.
For outdoor storage it is necessary to protect the lter from direct sunlight
as the heat and UV radiation may damage the lter panels.
Filters are delivered covered by plastic, within the wooden crate. If placed
outdoors, a special type of corrosion may develop, especially in coastal
areas. Humidity on the inside of the
plastic forms the anode, and dry
exposed parts the cathode. Filters
must therefore be unpacked after
delivery in these areas.

When lifting the unopened crate a
fork lift with fork extensions should
be used.
Unpacked lters without tank (type 2)
can be lifted using a crane or overhead
gantry, and straps. The straps should be
positioned as shown in Figure 3.3.
NOTE! The lters must be put down on
their nal (operational) site.
WARNING!
Before unloading, the working area
should be fenced off according to
local regulations to prohibit access by
unauthorised persons.
Figure 3.3 Lifting points for lters
without tank (type 2/3)
!

10
Operation and maintenance manual for
Hydrotech Disclter HSF31-series

The following requirements must be met before installation can begin
The electrical specications of the equipment corresponds to the available
line current specications
The equipment is undamaged (no damages from transport or storage)


For outdoor installations it is necessary to protect the lter from direct sunlight
as the heat and UV radiation may otherwise destroy the lter panels.
Protect the lter from freezing. At water temperatures of +5 °C and air
temperatures warmer than -10 °C, the lids of the lter is enough for protection.
At lower water and air temperatures, the lter should be installed indoors.

Lift the lters into their nal (operational) site
Fit the inlet channel on the lter frame.
Position the lter.
Check the parallelism of the lter frame. Maximum deviation of the diagonal
measures are: ± 2 mm (See gure 4.1.2.1 below).
The lters must be properly levelled in both directions. Maximum deviation:
3 mm/m.
The inlet channel should be bolted to the concrete wall. The lter frame
should be bolted to the concrete oor with 6 expansion-shell bolts.
Check the alignment of the drum. The distance between inlet side (the open
side) of the drum and the lter frame should be approx. 10 mm.
Figure 4.1.2.1
Check the parallelism of the
lter frame