Erie water treatment SOF-WHF series User manual

© 2017erie watertreatment TM-EN-SOF-WHF-Rev2017.01
Technical Manual
WHOLEHOUSE WATER FILTER
Models:
SOF-WHF-

TABLE OF CONTENT
Page 2
Table ofcontent...................................................................................................................Page 2
Warning & Safety instructions..............................................................................................Page 3
Operating conditions & Requirements.................................................................................Page 4
Installation...........................................................................................................................Page 5
Commissioning.....................................................................................................................Page 6
Electronic control panel.......................................................................................................Page 7
Maintenance........................................................................................................................Page 10
Troubleshooting...................................................................................................................Page 12
Electrical wiring diagram......................................................................................................Page 13
Default configuration parameter settings.............................................................................Page 14
Exploded view - System........................................................................................................Page 15
Exploded view - Timer assembly ..........................................................................................Page 17
Exploded view - Valve body..................................................................................................Page 19
Technical data......................................................................................................................Page 21

WARNING & SAFETY INSTRUCTIONS
Page 3
Before you begin the installation of the appliance, we advise you read
andcarefully follow the instructions contained in this manual. It contains
importantinformationaboutsafety,installation,useandmaintenance of
the product. The actual system that you have received, may differ from
the pictures/illustrations/descriptions in this Technical Manual.
Failure to follow the instructions could cause personal injury or damage
to the appliance or property. Only when installed, commissioned and
servicedcorrectly,theappliancewillofferyoumanyyearsoftrouble-free
operation.
The appliance is intended to 'filter' the water, meaning it will remove
specific undesired substances; it will not necessarily remove other
contaminants present in thewater. Theappliance willnot purify polluted
water or make it safe to drink!
Installation of the appliance should only be undertaken by a competent
person, aware of the local codes in force. All plumbing and electrical
connections must be done in accordance with local codes.
Before setting up the appliance, make sure to check it for any externally
visible damage; do not install or use when damaged.
Use a hand truck to transport the appliance. To prevent accident or
injury, do not hoist the appliance over your shoulder. Do not lay the
appliance on its side.
Keep this Technical Manual in a safe place and ensure that new usersare
familiar with the content.
The appliance is designed and manufactured in accordance with current
safety requirements and regulations. Incorrect repairs can result in
unforeseen danger for the user, for which the manufacturer cannot be
held responsible. Therefore repairs should only be undertaken by a
competent technician, familiar and trained for this product.
In respect of the environment, the appliance should be disposed of in
accordance with Waste Electrical and Electronic Equipment
requirements.Refertonational/locallawsandcodesforcorrectrecycling
of this appliance.

OPERATING CONDITIONS & REQUIREMENTS
Page 4
OPERATING PRESSURE MIN-MAX: 2,0-8,3 bar / 29-120 psi
check water pressure regularly; it may fluctuate severely
depending on the time of day, the day of the week oreven the
season of the year.
take into account that night time water pressure may be
considerably higher than day time water pressure.
install a pressure reducer ahead of the appliance if necessary.
install a pressure booster, if it is likely that water pressure may
drop below the minimum.
OPERATING TEMPERATURE MIN-MAX: 2-48 °C / 36-120 °F
do not install the appliance in an environment where high
ambient temperatures (e.g. unvented boiler house) or freezing
temperatures can occur.
the appliance cannot be exposed to outdoor elements, such as
direct sunlight or atmospheric precipitation.
do not install the appliance too close to awater heater; keep at
least 3 m (10 ft) of piping between the outlet of the appliance
andtheinletofthewaterheater;water heaterscansometimes
transmit heat back down the cold pipe into the appliance;
always install a check valve at the outlet of the appliance.
ELECTRICAL CONNECTION:
the appliance only works on 24 VAC; always use it in
combination with the supplied transformer.
makesuretoplugthe transformer intoa poweroutlet,whichis
installed in a dry location, with the proper rating and over-
current protection.

INSTALLATION
Page 5
INLET & OUTLET
We strongly recommend the use of flexible hoses to
connect the appliance to the water distribution system; use
hoses with a large diameter in order to limit the pressure
loss.
If the appliance is not equipped with the factory bypass
(optional), we strongly recommend to install a 3-valve
bypasssystem(notincludedwiththisproduct!)toisolatethe
appliance from the water distribution system in case of
repairs.Itallowstoturnoffthewatertotheappliance,while
maintaining (untreated) water supply to theuser.
WITH FACTORY BYPASS (optional)
Picture 1
= mains water supply (untreated water)
= inlet of appliance (untreated water)
= outlet of appliance (treated water)
= house/application (treated water)
1. Screw the factory bypass onto the in/out ports on the
control valve (&); make sure to install the gasket
seals. Tighten the nuts firmly by hand.
2. Screw the connection kit with nuts onto the factory
bypass (&); make sure to install the gasket seals.
Tighten the nuts firmly by hand.
3. Connect the mains water supply to the adaptor on the
inlet port of the factory bypass ().
4. Connect the house/application to the adaptor on the
outlet port of thefactory bypass ().
WITH 3-VALVE BYPASS SYSTEM (notincluded)
Picture 2
= inlet of appliance (untreated water)
= outlet of appliance (treated water)
1. Install the 3-valve bypass system.
2. Screw the connection kit with nuts onto the in/out ports
on the control valve (&); make sure to install the
gasket seals. Tighten the nuts firmly by hand.
3. Connectthe3-valvebypasssystemtotheadaptorsonthe
in () and out () port of the control valve.
4. Connectthemainswatersupplytotheinletofthe3-valve
bypass system.
5. Connectthehouse/applicationtotheoutletofthe3-valve
bypass system.
DRAIN
We recommend the use of a stand pipe with P-trap.
To prevent backflow from the sewerage system into the
appliance,always install and use the included drainadaptor
withairgapanddoublehosebarb,toconnectthedrainhose
to the sewerage system.
Lay-out the drain hose in such a way that pressure loss
is minimized; avoid kinks and unnecessary elevations.
Make sure that the sewerage system is suitable for the
rinse water flow rateof the appliance.
Picture 3
1. Install the drain adaptor to the sewerage system; it fits
overa32mmpipeorinsidea40mmpipeadaptor.Ensure
a permanent and watertight connection.
2. Connect a 13 mm hose to the drain connection of the
control valve (); secure it by means of a clamp.
3. Run the drain hose to the drain adaptor and connect it to
one ofthe hosebarbs;secure itby means of aclamp.This
drain line operates under pressure, so it may be installed
higher than the appliance.

COMMISSIONING
Page 6
ELECTRICAL
Picture 4
1. Plug the transformers output lead into the socket on the
control valves power cord; secure it by means of the
TwistLock clamp.
2. Plug the transformer into an electrical outlet.
PRESSURIZING
1. Make sure the bypass system is in 'bypass' position.
2. Make sure the electronic controller of the appliance is in
service mode.
3. Open the mains water supply.
4. Open a cold treated water faucet nearby the appliance
and let the water run for a few minutes until all air is
purged and all foreign material that may have resulted
from the installation is washed out; close the tap.
5. Gently pressurizethe appliance, by putting it intoservice:
factorybypass:
1. open the 'outlet' valve;
2. slowly open the 'inlet' valve.
3-valvebypass:
1. close the 'bypass' valve;
2. open the 'outlet' valve;
3. slowly open the 'inlet' valve.
6. After 2-3 minutes, open a cold treated water faucet
nearby the appliance and let the water run until all air is
purged from the installation and the filter media is
properly rinsed (it is normal for the rinse water to show
some discoloration!); let the water run until the rinse
water is clear; close the tap.
7. Check the appliance and all hydraulic connections for
leaks.
ELECTRONIC CONTROL PANEL
1. Program the electronic controller.
PERFORM REGENERATION
1. Manuallyinitiate a regeneration, bypressing the scroll
button; the display will show:
2. Leavethe appliance inthis position; the countdown timer
will countdown to 0 sec and start a regeneration.
Regen in 10 sec

ELECTRONIC CONTROL PANEL
Page 7
Picture 5
POWER-UP
After power-up the display will show the installed software
version for a period of 5 seconds.
POWER FAILURE
In the event of a power failure, the program will remain
stored in the NOVRAM®duringan undefined period, while an
incorporated SuperCap will maintain the correct time of day
during a period of several hours; consequently, in case of
prolonged power failure, the time of day might not be
maintained; if this happens, the time of day will be reset to
8:00 when the power supply is re-established, while the
indication will flash, indicating that the time of day needs to
be set.
When the power failure occurs during the execution of an
automatic regeneration, the control valve will remain in its
last position; when the power supply is re-established, the
control valve will return to the service position, stay there for
60 sec. and restart a complete regeneration from the
beginning.
TIMER FAILURE
In the event of a timer failure, the display will show the
message:
If powering off/on the appliance doesn’t solve this problem,
professional service is required.
MAINTENANCE REMINDER
Onlyavailableifthe maintenance reminder functionhas
been activated and programmed by your supplier!
Once the maintenance interval is reached, the display will
intermittently show the message:
While the appliance will continue to operate normally, it is
recommended to have preventive maintenance performed
by a professional.
SERVICE MODE
In service mode the display shows the time of day and the
number of days remaining until the next regeneration:
REGENERATION MODE
In regeneration mode the display shows the remaining
regeneration time and the remaining cycle time:
The appliance can be reset to service mode at any time by
pressing the scroll button, as such manually advancing it
through the regeneration cycles.
MANUAL REGENERATION
It is possible to manually initiate an immediate regeneration
or a delayed regeneration (at the preprogrammed time of
regeneration).
1. Press the scroll button; the display will show:
If the control panel is left in this position, the
countdowntimerwillcountdownto0secandstartan
immediate regeneration.
To cancel this mode, press the scrollbuttonbefore
the countdown timer has reached 0 sec; the display
will show:
If the control panel is left in this position, a delayed
regeneration will be started at the indicated
preprogrammed time of regeneration.
To cancel this mode, press the scroll button; the
control panel will return to the service mode.
HOLIDAY MODE
It is possible to put the appliance in holiday mode; this will
prevent automatic regeneration from taking place, yet will
ensure the appliance is automatically regenerated atthe end
of the holiday cycle.
1. Press the scroll button repeatedly until the display
shows:
Press the up or down button to activate the
holiday mode bysetting the number of full days away
fromhome,ordeactivatethe holiday mode (OFF).
Once the control panel is back in service mode, the display
will show:
The holiday mode is automatically cancelled when a
regeneration is manually initiated!
symbol
button
function
SCROLL
to advance to the next
parameter
UP
to increase the value of the
parameter
DOWN
to decrease the value of the
parameter
Service Required
Rgn:XXX CycY:ZZZ
8:01 7 DAY REM
Maintenance Now
Regen in 10 sec
Regen @ 2:00
Holiday: OFF
8:01 Holiday

ELECTRONIC CONTROL PANEL
Page 8
PROGRAMMING INSTRUCTIONS -
BASIC SETTINGS
Beforeenteringthe programming mode, makesurethat
the appliance is in the service mode.
In case no button is pressed in a period of 5 min, the
control panel will automatically return to the service mode;
any changes made willNOT be saved!
1. Press the scroll button and hold it for 2 sec until the
displayshows:
Press the up or down button to set the
language.
2. Press the scroll button again; the display will show:
Press the up or down button to set the time of
day.
3. Press the scroll button again; the display will show:
Press the up or down button to set thenumber
of days between regenerations.
4. Press the scroll button again; the display will show:
Presstheupordownbuttontosavethesettings
into the NOVRAM® and exit the programming mode.
The regeneration cycle is necessary to wash out
impurities that are captured in the filter media during the
service cycle, and to prevent ‘caking’ of the filter media,
which may result in an increase of pressure drop over the
appliance. Typically a regeneration every 7 days should be
sufficient. In case of high flow rates, excessive water usage
or ahigh concentration of impurities in the incoming water,
it may be necessary to lower the number of days between
regenerations.
PROGRAMMING INSTRUCTIONS -
CONFIGURATION PARAMETERS
Beforeenteringthe programming mode, makesurethat
the appliance is in service mode.
All configuration parameters on this appliance have
been pre-programmed in the factory, to offer optimal
performance in a wide range of applications and situations.
Neverthelessitmaybenecessaryordesirable tochangeany
of these parameters, to further optimize the appliances
performance or to adapt it to the specific requirements of
the installation.
In case no button is pressed in a period of 5 min, the
control panel will automatically return to the service mode;
any changes made willNOT be saved!
1. Press the scroll button and hold it for 6 sec until the
displayshows:
2. Within 10 sec, press the up button; the display will
show:
Press the up or down button to set the units of
measure(Metric or US).
3. Press the scroll button again; the display will show:
Press the up or down button to activate the
maintenance reminder function by setting the
maintenance interval, or deactivate the maintenance
reminderfunction.
4. Press the scroll button again; the display will show:
Press the up or down button to set the length
of the regeneration cycle.
Pressthescrollbuttonagaintoadvancetothenext
regeneration cycle.
Cycle 1
Backwash
Cycle 2
N
ofunction
Cycle 3
Fast rinse
5. Press the scroll button again; the display will show:
Press the up or down button to set the time of
regeneration.
6. Press the scroll button again; the display will show:
Presstheupordownbuttontosavethesettings
into the NOVRAM® and exit the programming mode.
Regen @ 0:00
Exit
Language:English
Set time: 8:01
Interval:7 Days
Exit
Cycle 1: XX min
System Check
MaintInt: OFF
Units:Metric

ELECTRONIC CONTROL PANEL
Page 9
DIAGNOSTICS MODE
In the Diagnostics mode several operating parameters
can be consulted; particularly during a service intervention,
these parameters can be helpful to identify the cause of a
problemor malfunction.
Before entering the Diagnostics mode, make sure that
the appliance is in service mode.
In case no button is pressed in a period of 5 min, the
control panel will automatically return to the service mode!
Accessing the Diagnostics mode
1. Press the scroll button and hold it for 6 sec until the
displayshows:
2. Within 10 sec, press the down button; the display will
show:
You are now in the Diagnostics mode.
Press the scroll button to advance to the next
diagnostics parameter.
Available diagnostics parameters
Regen X days ago: number of days since last
regeneration.
In Srvc: total number of days in service.
# of Regens: numberof regenerations since installation.
Regen @: setting of time of regeneration.
Interval: setting of number of days between
regenerations.
Cycle X: setting of length of corresponding regeneration
cycle.
Units: control is programmed for Metric units.
Regen: setting of the regeneration mode.
Valve Type: setting of valve type.
MP Resets: number of resets of microprocessor (for
factorypurposeonly).
Memory Reset: number of corrupt memory start-ups (for
factorypurposeonly).
EZRFTg EZDRV r02:software version.
Exiting the Diagnostics mode
1. Press the scroll button repeatedly until the display
shows:
Press the up or down button to exit the
Diagnostics mode.
Exit
Regen XXdays ago
System Check

MAINTENANCE
Page 10
RECOMMENDATION
Notwithstanding the reliability of the appliance, we strongly
recommend to have it serviced and maintained on a regular
basis by a competent and duly trained technician. He will be
able to determine the appropriate maintenance interval for
the appliance, depending on yourspecificapplication and the
local operating conditions. The advantages of performing
regularmaintenance are:
regular check of the local operating conditions (water
quality, pressure, etc);
regular control and adjustment of the settings of the
appliance, to guarantee it operates at maximum
efficiency;
minimize the risk of unexpected break-down.
Contact your dealer or installer for more information, or visit
our website.
ROUTINE CHECKS
Regularlytheusershouldperformabasicchecktoverifyifthe
appliance is functioning correctly, on the basis of the
following control points:
1. Check settings of electronic control panel.
2. Check water composition before/after appliance.
3. Check drain line from control valve; there shouldn’t be
any water flow(unless appliance is in regeneration).
4. Checkapplianceandsurroundingarea;thereshouldn’tbe
any water leakages.
BYPASSING THE APPLIANCE
Occasionally it may be necessary to put the appliance
hydraulically in bypass, i.e. to isolate it from the water
distribution system; f.e.:
in case of an urgent technical problem;
when it is not necessary to supply treated water to the
house/application (refill swimming pool, irrigation,...).
WITH FACTORY BYPASS (optional)
Picture 6.a
SERVICE POSITION
= inlet valve to appliance is OPEN
= outlet valve from appliance is OPEN
Picture 6.b
BYPASSPOSITION
= inlet valve to appliance is CLOSED
= outlet valve from appliance is CLOSED
Picture 6.c
MAINTENANCE POSITION
= inlet valve to appliance is OPEN
= outlet valve from appliance is CLOSED
WITH 3-VALVE BYPASS SYSTEM (notincluded)
Picture 7.a
SERVICE POSITION
= bypass valve is CLOSED
= inlet valve to appliance is OPEN
= outlet valve from appliance is OPEN
Picture 7.b
BYPASSPOSITION
= bypass valve is OPEN
= inlet valve to appliance is CLOSED
= outlet valve from appliance is CLOSED
Picture 7.c
MAINTENANCE POSITION
= bypass valve is OPEN
= inlet valve to appliance is OPEN
= outlet valve from appliance is CLOSED
SANITIZING THE APPLIANCE
This appliance is manufactured from premium quality
material and assembled insafeconditions toassureit is clean
and sanitary. If installed andserviced correctly, this appliance
willnotinfectorcontaminateyourwatersupply.However,as
in any 'device' plumbed-in in your water distribution system,
a proliferation of bacteria is possible, especially in case of
'stagnant water'. Therefore this appliance will automatically
rinse the filter media periodically.
If the power supply to the appliance is disconnected for a
longer period of time, we recommend, when the power
supply is re-established, to manually initiate a complete
regeneration.

TROUBLESHOOTING
Page 11
PROBLEM
C
AUSE
S
OLUTION
U
ntreated water to
service
Open or defective bypass
C
lose
orreplace
bypass
Appliance
in regeneration
Wait until regeneration finishes or
manually
advance regeneration to end
Excessive water usage
Initiate regeneration manually
Change in raw water hardness
Verify
composition
of
i
ncoming
untreated
water
and adjust regeneration frequency accordingly
Appliance
fails to
r
egenerat
e
Referto problem“
Appliance
fails to
regenerate
”
Appliance
fails to backwash properly
Refer to problem “
Appliance
fails to
backwash
properly”
V
alve bodyand timer out of synchronisation
Synchronize valve body and timer
Decreasing
filter
capacityof
filter media
Clean or replace filter media
Loss of
filtermedia
Refer to problem “Loss of
filtermedia
”
Leak at risertube
Verify that riser tube is seated correctly and is not
cracked
Low levels of
contaminant in treated
water
Bypass not completely closed
Close bypass
Excessive service flow rate
Lower service flow rate
Increasefiltercapacitybyincreasingvolumeoffilter
media
Leak at risertube
Verify that riser tube is seated correctly and is not
cracked
Appliance
fails to
regenerate
Faulty electrical supply
Verify electrical service (fuse, transformer,...)
Defective PCB
Replace PCB
Defective
drive motor
Replace
drive motor
Regeneration frequency not programmed
Program regeneration frequency
Loss of water pressure
Mineral or iron build
-
up in resin tank
Clean resin bed and control valve; increase
regeneration frequency
Plugged lowerand/or upperdistributor
Verify that distributors are free of debris
Crushed lower and/or upper distributor
Replace distributor(s)
Drain line from control
valve flows
continuously
Appliance
in regeneration
Wait until regeneration finishes or
manually
advance regeneration to end
Faulty electrical supply
Verify electrical service (fuse, transformer,...)
Defective drive motor
Replace drive motor
Defective microswitch
Replace micro switches
Defective PCB
Replace PCB
V
alve bodyand timer out of synchronisation
Synchronize valve body and timer
Loss of
filter media
Lower and/or upper distributor damaged
Replace distributor(s)
Leak between riser tube and upper distributor
Verify that riser tube is seated correctly and is not
cracked
Appliance fails to
backwash properly
Low operating pressure
C
heck operating pressure; must be higher than
2
,
0
bar
Insufficient water supply
Check water supply(flow rate/dynamicpressure)
Restricted drain line
Verify drain linefor kinks or restrictions
Excessiveb
uild
-
up
ofimpurities
in
pressure
tank
Clean
or replace
filter media
and control valve;
increase regeneration frequency
Plugged backwash flow control
Clean
or replace backwash flow control
Plugged top or bottom distributor
Verifythattop and bottom
distributorarecleanand
slots are not clogged by iron or other impurities
Filter media is completely ‘caked’ (solid block)
Replace filter media and reduce regeneration
interval
Control valve cycles
continuously
Defective microswitch
Replace micro
switches

ELECTRICAL WIRING DIAGRAM
Page 12

= position switches  
= powerlead
= drive motor
= auxilliary contact (24 VAC, max. 500mA)
= key pad






DEFAULT CONFIGURATION PARAMETER SETTINGS
Page 13
Model SOF-WHF-
Filter media 12 26
44
Units
Metric Metric Metric
MaintInt(mths) OFF OFF OFF
Cycle 1: BACKWASH (min) 5 5 5
Cycle 2: SLOW RINSE (min) 0 0 0
Cycle 3:PURGE (min) 2 2 2
Regen @ 0:00 0:00 0:00

EXPLODED VIEW - SYSTEM
Page 14

EXPLODED VIEW - SYSTEM
Page 15
Item PN Description Remark (*)
1 PT/1018/BA Pressure tank, 10x18 12L 
PT/1035/BA Pressure tank, 10x35 26L 
PT/1054/BA Pressure tank, 10x54 44L 
2 A1100(BB) Coconut Granular Activated Carbon (GAC) multiple of 1 cuft 
3 A2000 Quartz sand multiple of 25 kg (=17 ltr)
4 A1000 Gravel multiple of 25 kg (=17 ltr)
5 39004 Dome label ‘erie water treatment’
6 39099 Label ‘Softena’ (mini) 12L
39100 Label ‘Softena’ (midi) 26L
39101 Label ‘Softena’ (maxi) 44L
7 J/1018(W) Tank jacket 10x18, white 12L
J/1035(W) Tank jacket 10x35, white 26L
J/1054(W) Tank jacket 10x54, white 44L
8 38534 Riser tube assembly to be cut to length 
9 287/166/LS Top distributor 
10 J/10 Tack cover
11 568/303/1 Connection kit 1” BSP male
12 2400TF/JM/AUX/MAX Control valve 
13 28/298/11 Transformer 230/24V - 50 Hz, 24VA, EuroT plug 
14 38522 Drain hose to be ordered per meter 
15 74163 Air gap with double hose barb
16 38521 Clamp, drain hose (2x)
(*) Recommended Spare Part

EXPLODED VIEW - TIMER ASSEMBLY
Page 16

EXPLODED VIEW - TIMER ASSEMBLY
Page 17
(*) Recommended Spare Part
Item PN Description Remark (*)
1 70971 Power lead with plug 
2 72263 Clamp
3 28/244/1 Plug (large)
4 71502 Screw, timer cover (3x)
5 15/222 Screw, back plate (2x)
6 70962 Back plate
7 75157 Worm coupling 
8 15/222 Screw, drive motor assembly (2x)
9 74267 Cable clamp
10 70312 Strain relief, power lead
11 75158 Retaining ring, worm drive shaft 
12 72261 Drive motor 
13 75156 Worm driveshaft 
14 70965 Switch cam
15 568/386 Bracket, micro switches
16 568/310 Gear, switch cam
17 15/184/7 Locking screw, switch cam
18 15/173/12 Screw, micro switches (2x)
19 72451 Micro switch assy 
20 71679 Cable set, drive motor 
21 15/102 Screw, PCB (2x)
22 72703 Printed Circuit Board 
23 74274 Timer cover assembly ‘Softena’

EXPLODED VIEW - VALVE BODY
Page 18

EXPLODED VIEW - VALVE BODY
Page 19
Item PN Description Remark (*)
1 21/83 Drainconnection
2 568/271/M Backwash flow control M (18,9 ltr/min)
3 72678 Bolt, valve cover (6x)
4 568/254/3 Valve cover
5 185/154/1 O-ring, valve cover
6 186/112 O-ring, Teflon
7 72327 Washer, PE
8 568/260 Worm gear
9 568/259 Rotor cam
10 185/041/1 O-ring, rotor
11 568/345/2 Rotor plate 
12 568/256 Seal disk 
13 568/383 Insert plate
14 568/384 Gasket
15 51/5/105 Spring, float valve
16 568/270/4 Float valve
17 568/274/5 Injector (green)
18 186/118 O-ring, plug (small)
19 541/273 Plug (small)
20 541/254 Spring clip, plug (small)
21 570/251 Gasket, riser
22 568/334 Riser insert
23 185/214/1 O-ring, riser tube
24 185/337/1 O-ring, tank
25 541/232 Adapter ring
26 15/207/12 Screw, adapter ring (2x)
27 72772 Packing gland nut (plastic)
28 185/211/1 O-ring, packing gland nut
29 186/115 O-ring, worm drive shaft (2x)
30 568/208/2 Worm driveshaft
31 14/43 Washer, worm drive shaft
32 185/208/1 O-ring, plug (large)
33 21/72/3 Plug (large)
34 72800 Valvebody
A RK/568/259/2 Repair kit rotor 
B RK/75154 Repair kit packing gland nut
(*) Recommended Spare Part

TECHNICAL DATA
Page 20
Technical specifications:
Model SOF-WHF-
Filter media (cuft) 12 26 44
Operating pressure min/max(bar) 2,0/8,3
Operating temperature min/max (°C) 2/48
Electrical connection (V/Hz) 230/50(1)
Max. power consumption (VA) 12
Hydraulic connection inlet/outlet 1” BSP Male
Hydraulic connection drain 13 mm hose barb
Pressure tank 10x18 10x35 10x54
(1) Supplied with 24V transformer
Performances @ 3 bar operating pressure(2):
Model SOF-WHF-
Filter media (cuft) 12 26 44
Service flow rate @∆p 1 bar (m³/hr)(3) 3,6 3,4 3,2
Recomm. max. service flow (m³/hr) (4) 1,0 1,2 1,4
Rinse water usage per regeneration (ltr) 132 132 132
Backwash flow rate(ltr/min) 19 19 19
(2) Indicative numbers, performances depending on operating conditions and water quality
(3) Based on clean filter bed operation
(4) Flow rate at which filtration process is still executed adequately, higher (up to x2) intermittent flow rates are possible
Dimensions:
Model SOF-WHF-
Filter media (cuft) 12 26 44
Width(mm)(W) 264 264 264
Depth (mm) (D) 282 282 282
Depth,incl. factorybypass(mm)(D) 371 371 371
Height(mm)(H) 629 1.065 1.554