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2)Pour the recommended amount of sand into the tank, making sure
that the centre-pipe remains centred and vertical.
3) Level the surface of the sand upon completion.
4)Remove the Sand Fill Cover.
5)Carefully remove all sand particles from the valve mounting
surface.
6)Place the O-ring into the groove on the tank.
7)Lower the Multiport Control Valve carefully into position so that its
underside engages with the centre-pipe. Rotate the valve until
the inlet is approximately in line with the pump.
8)Place the clamp set around the tank and the valve. Secure using
the screw provided.
9)Firmly tap with a rubber mallet outside of the clamps as you
tighten the screw.
10)Tighten the screw until the Multiport Control Valve is properly
assembled to create a water tight seal. Do not over tighten.
11)Install the pressure gauge into the threaded opening on the Multiport Control
Valve.
12)Install the union sets and the backwash union set.
13)Connect pump to the control valve opening marked "PUMP".
14)Make return to pool pipe connection to control valve opening marked
"RETURN".
15)Connect the waste water pipe to the control valve opening marked "WASTE".
16)To prevent water leakage, be sure all pipe connections are tight.
17)Prior to starting the filtration process by turning on the pump, we highly
recommend that you read through the pump instruction manual to ensure
proper installation and to avoid the risk of electric shock.
START-UP PROCEDURE
1)Be sure the correct amount of filter sand media is in the tank and all connections have been made and are
secure.
2)Turn the Control Valve handle to the "Backwash" position. Press the handle downward before turning.
3)Start the pump according to pump instruction manual (be sure all suction and return lines are open).
4)Once water flow is steady out the waste line, run the pump for at least 2 minutes. The initial backwashing of
the filter is recommended to remove any impurities or fine sand particles in the sand media.
5)Turn the pump off and set the control valve to RINSE position. Start pump and operate until water in sight
glass is clear about ½ to 1 minute. Turn pump off, set valve to FILTER position and restart pump. Your filter is
now operating in the normal filter mode, filtering particles and dirt from the pool water.
6)Take note of the initial pressure gauge reading for future reference. Variation may occur from pool to pool.
7)Adjust pool suction and return valves to achieve desired flow. Check system and filter for water leaks and
tighten connections, bolts, nuts as required.
NOTE: During the initial clean-up of the pool water, it may be necessary to backwash frequently due to the
unusually heavy initial dirt load in the water.
IMPORTANT: To prevent unnecessary strain on piping system and control valve, always turn off the pump
before changing the operation of the control valve. To prevent damage to the pump and filter and for proper
operation of the system, clean pump strainer (basket) and skimmer basket(s) regularly.
MULTIPORT CONTROL VALVE FUNCTIONS:-
FILTER gives downward flow through the filter bed. This position can also be used for vacuuming.
BACKWASH gives upward flow through the filter bed that removes the dirt from the sand and carries it to the
waste.
WASTE is for pumping water from the pool. It allows the flow from the pump to bypass the filter and go directly
to the waste. You can also use this position to vacuum heavy concentration of debris.
RECIRCULATE bypasses the filter to circulate water through the pool system.
RINSE gives a downward flow that settles the filter bed after backwashing and carries any remaining loose dirt
to the waste.
CLOSED prevents only backflow of water from pool during pump maintenance.
To WINTERISE, set the control valve handle in the middle between RINSE and FILTER. This will allow air to leave or
enter the tank to help priming and draining. Only to be used when the pump is off.
VACUUMING THE POOL
Light Soil: set the control valve to FILTER position.
Heavy Soil: set the control valve to WASTE position.
FIGURE3.-Clamp Installation
tap with a
rubber
mallet and
tighten the
screws.
TYPICAL INSTALLATION
2-4
WINTERRISING
Backwash the filter for at least thirty minutes before closing down the pool for winterising. This will clean the filter bed
thoroughly.
1)Drain the filter tank by removing the drain cap at the base of the filter tank. Leave the cap off during winter.
2)Set the control valve handle between the RINSE and FILTER. This will lift the handle and help with the draining process
by allowing air to enter into the tank.
3)Unscrew the pressure gauge from the control valve and store the gauge indoor.
4)Drain and winterise pump according to pump instructions.
5)Repairs should be made during the off-season when the best service is available, do not leave them until the next
season.
TROUBLE SHOOTING
SAND ENTERING THE POOL
Sand too small; Flow too high; Sand bed calcified; Broken Laterals; Loose centre-pipe; Too much sand; Control Valve
not engaged; Air accumulation in filter.
SAND OUT OF BACKWASH HOSE
Flow too high; Too much sand in tank.
INADEQUATE FILTERING
Dirt build up; improper sand; Sand bed is too low; Algae in filter; Excessive dirt in pool; Calcified sand bed; Heavy
swimmer load; Flow rate too high or too low; Backwashing cycle too short; Backwash line too small.
SHORT FILTER CYCLE
Dirty filter; Improper sand; Sand bed is low; Algae in filter; Excessive dirt in pool; Calcified sand bed; heavy swimmer
load; Flow rate too high or too low; Backwashing cycle too short; Channels low; Backwash adapter in wrong location;
Channels in sand.
FILTER LEAKS
Tank cracked; Drain plug not tight; Valve/Tank O'ring damaged.
CONTROL VALVE LEAKS
Handle not properly engaged; Valve/Tank O'ring damaged; Valve cover O'ring damaged. Pressure gauge O'ring
damaged.
ABNORMAL LOSS OF POOL WATER
Leak inside Control Valve; Leakage from pool or piping.
HIGH PRESSURE FILTER
Dirty filter; Calcified sand bed; Return lines too small.
LOW PRESSURE IN FILTER
Control Valve incorrectly set; Pump running too slow (plugged or clogged); Air leakage into pump suction.
NOTE: If the recommendation in this manual do not solve your particular problem(s), please contact your local dealer
for service.
POOL CHEMISTRY GUIDELINES
SUGGESTED POOL CHEMISTRY LEVELS
TO RAISE
Add Soda Ash
PH
7.2 to 7.6
Add Sodium Bicarbonate
TOTAL ALKALIN ITY
100 to 130 ppm
CHLORINE (UNSTABILIZED) 0.3 to 1.0 ppm
Add Chlorine Chemical
Add Chlorine Chemical
CHLORINE (STABILIZED)
1.0 to 3.0 ppm
CHLOR！NE STAB！LIZER
40 to 70 ppm
Add Stabilizer
(Cyanuric Acid)
SPECIFICATIONS
MODEL NO.
MFS17
MFS20
MFS24
CODE
88012626
88012627 88012628 88012629
Effective Filtration Area (Sq Ft)
0.14
0.20
0.28
Filter Max Rate (LPM)
117
167
233
3
Filter Max Rate (m /h)
7.0
10.0
14.0
Turnover Capacity (In Gallons) - 8 Hour
15840
22176
30202
Turnover Capacity (In Gallons) - 10 Hour
19800
27720
33752
Turnover Capacity (In Gallons) - 12 Hour
23760
33264
45302
All Sand Required (kg)
40
70
125
A(mm)
354.5
396.3
429.5
B(mm)
417.5
459.3
492.5
C(mm)
670
760
825
D(mm)
195
225
280
E(mm)
425
500
600
F(mm)
125
125
125
ACTION REQUIRED TO CORRECT POOL CHEMISTRY
TO LOWER
Add Muriatic Acid or Sodium Bisulphate
Add Muriatic Acid
No action-chlorine will naturally dissipate
No action-chlorine will naturally dissipate
Dilution-partially drain&refill pool with water
that has not been treated with Cyanuric Acid.
MFS27A
MFS27
MFS31A
MFS31
MFS35
88012630 88012631
88012632
88012633
0.36
0.36
0.47
0.47
0.61
240
300
313
392
508
14.4
18.0
18.8
23.5
30.5
41184
42874
47309
52166
65261
65208
81576
51480
53592
59136
78250
97871
61776
64310
70963
185
185
320
320
430
425
459.5
450.5
508
564
B
A
488
545.5
513.5
594
650
968
1086
946
946
968
370
440
300
300
370
775
875
675
675
775
125
130
125
130
130
3-4
F
D
C
E
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