Pentair maytronics ecoclear EC 25 User manual

Media Filter
Installation
& Operation
Manual
EC 25
EC 28
Manufactured by

1Media Filter Owner’s Manual
CAUTIONS AND WARNINGS
Hazardous Pressure
Incorrectly installed or tested equipment may fail, causing
severe injury or property damage. Read and follow instructions
in owner’s manual when installing and operating equipment.
Have a trained pool professional perform all pressure tests.
Turn pump o before changing valve position
Do not unscrew MPV clamp while pump is running
All glued fittings and pipe work should be allowed to dry to
atmosphere for 24 hours before closing the installation. Failure
to do so could cause injury or installation failure.
The fittings on these filters are constructed of ABS. Some PVC
jointing compounds are incompatible with ABS possibly causing
failure to the product. Check compound suitability prior to use.

2
Media Filter Owner’s Manual
CONTENTS
Specifications 3
Filter Application 4
Installation/ Assembly 5
Operation 7
Start up 8
Service & Maintenace 10
Replacement Parts 11
Troubleshooting 15

3Media Filter Owner’s Manual
SPECIFICATIONS
Model Product Filter Area
ft2/ m2
Backwash Flow
Rate
(LPM)
Maximum Flow
Rate
(LPM)
EC-25-50 Ecoclear® Media Filter
25” / 50mm MPV 3.4 / 0.32 180 270
EC-28-50 Ecoclear® Media Filter
28” / 50mm MPV 4.4 / 0.41 230 345
Model A
(mm)
B
(mm)
C
(mm)
D
(mm)
Valve port
size
(mm)
Sand
(kg)
Glass
(kg)
Coarse Fine
EC-25-50 985 635 815 731 50 145 45 75
EC-28-50 1050 723 960 877 50 210 60 120
A
B
C
D

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Media Filter Owner’s Manual
FILTER APPLICATION  GENERAL INFORMATION
This filter is designed for use in domestic/residential swimming pool installations with correctly
sanitised fresh or salt chlorinated water. Suitable for use with sand, Zelbrite or glass filter
media.
1. Locate the filter system as close to the pool as practical.
2. Place the filter on a level stable foundation, preferably a concrete pad or paving. Filter
systems loaded with sand and water can exceed 500kg.
3. Position all equipment to provide ease of access for future servicing.
4. Protect the filter and pump from weather and direct sunlight by ensuring that they are
properly housed.
5. Ensure there is sucient space to provide adequate ventilation to electric pump motor.
6. Clean a new pool as well as possible before filling pool and operating filter. Excess dirt and
large particles of foreign matter in the system can cause serious damage to the filter and
pump.
7. Ensure pump is compatible with filter specifications.
8. For below water level installations ensure isolation valves are installed to reduce risk of
flooding.

5Media Filter Owner’s Manual
INSTALLATION / ASSEMBLY OF INTERNAL COMPONENTS
Installation of filter should be only carried out by qualified personnel.
Ensure that the under-drain assembly (hub, laterals & tube) are properly assembled & installed
prior to adding filter media (sand).
1. The filter internals comprise of a collector hub and eight (8) laterals, which are supplied
packaged seperately with the collector hub and are stored inside the filter tank prior to
shipment.
2. Carefully inspect the laterals and hub prior to assembly for any visible defects.
3. Please ensure all laterals are hand tight prior to adding media, as they may have loosened
during shipping.
Loading Sand Media
1. To keep sand out o collector assembly, place plastic sand shield
over top of collector tube before pouring sand into filter (See
diagram below).
2. To support laterals and prevent lateral breakage during loadings,
fill tank about half full of water before loading sand.
3. Pour sand into filter, making sure that the sand is of the correct
type and quantity for the particular filter model (Refer filter label).
Make sure gasket area on top of tank is free of sand before
installing valve.
4. Before installing valve, double-check that the correct quantity of sand has been loaded.
5. Remove plastic sand loading shield and keep for future use.
Installation of Multi-port Valve
1. Install o-ring on valve flange; make sure o-ring is clean, and has no nicks, tears, or scrapes
and lubricate with silicon based lubricant.
2. Make sure tank and valve flanges are clean and free of sand; put valve on top of tank.
Vertical pipe of collector assembly inserts into base of valve.
3. Install clamp; make sure knob is positioned for easy access for filter maintenance. Valve
port labelled “Pump” should point toward pump.
4. Tighten clamp knob until clamp ends (under bolt) are 1/4” (6mm) apart. Tap around outside
of clamp with a mallet to help seat clamp.

6
Media Filter Owner’s Manual
5. Connect pipe from pump discharge to valve port labelled “PUMP”; use union provided.
Assemble union as follows for leak free operation:
- O-ring and sealing surfaces must be clean.
- Assemble hand tight only (No wrenches).
- NO pipe compound or teflon tape on unions.
6. Complete all plumbing connections, using 50.8mm (EC-25-50, EC-28-50) pipe to reduce
pressure losses as much as possible.
- Pipe from valve RETURN port to pool return.
- Pipe from valve WASTE port to waste.
- Suction piping from pool to trap inlet on pump.
7. System is ready to start up.
8. If you notice a leak around the clamp area after 15-30 minutes of running, repeat steps 3-4.
If there are leaks from beneath valve/clamp area, STOP PUMP, release all pressure by turning
valve handle to ‘waste’, remove clamp and valve and clean sealing surfaces

7Media Filter Owner’s Manual
OPERATION
WASTE
FILTER
BACKWASH RINSE
WASTE
RECIRCULATE
CLOSED
WASTE WASTE
WASTE WASTE WASTE
IN FLOW OUT FLOW IN FLOW OUT FLOW IN FLOW OUT FLOW
IN FLOW OUT FLOW IN FLOW OUT FLOW IN FLOW OUT FLOW
The operation and the positions of valve settings are as follows:
Valve Settings Function
Filter Normal filtration and vacuuming; water goes
through filter to pool.
Waste Lowers pool level or drains pool; water
bypasses filter, goes to waste.
Closed Shuts o all flow to filter and pool.
Backwash Reverses flow for cleaning; water goes
through filter to waste.
Rinse For initial startup cleaning and sand bed
leveling after backwash; water goes through
filter to waste.
Recirculate Circulates pool water; bypasses filter.
WARNING: TURN PUMP OFF BEFORE ADJUSTING VALVE

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Media Filter Owner’s Manual
START UP
1. Open system valve and make sure pump is filled with water. Make sure pool water level is 2”
(50mm) above bottom of skimmer opening.
2. With pump OFF, set valve to ‘BACKWASH’ position.
3. Start pump, circulating water through filter to waste. NOTE: To prevent pump running dry, be sure
water level never drops below bottom of skimmer inlet. Add water to pool if necessary to keep
skimmer flooded while back-washing and rinsing.
4. Backwash until water runs clear (1-5 minutes)
5. Stop Pump; set valve to ‘RINSE’ position.
6. Start pump; run pump for 1 minute. Note: for Zelbrite repeat steps 1 through to 6 three times.
7. Stop pump; set valve to ‘FILTER’ Position.
8. Filter is now ready for service.
9. Record clean starting filter pressure gauge reading as a reference.
10. For new pools, backwash once a day until pool water is sparkling clear. Backwash when pressure
gauge shows 5 to 7 psi (35 to 50kPa) higher than clean starting pressure (refer to step 9).
SERVICE & MAINTENANCE
Hazardous pressure. Stop pump and release all pressure from system before working on
filter, valve, or clamp.
General: Wash outside of filter with a mild detergent and water. Rinse o with hose.
DO NOT use solvents to clean filter; solvents may damage components in system.
Inspect sand/media bed at least once a year to remove foreign material which has not been back-washed
out of the system.
NOTE: When the sand/media bed gets hard and crusty on top, remove all the old sand/media and replace
it with new sand/media. Alternatively, if the pressure gauge does not return to within 40kPa of clean filter
pressure after back-washing it is time to replace the filter media.
Weekly Pool Equipment Inspection
1. Check pressure during operation. When pressure is 5 to 7 psi (35 to 50 kPa) higher than clean operating
pressure, backwash filter (see instructions under Startup/Operation, page 12).
2. Except during hot weather with heavy skimmer loads, operating filter 6 to 12 hours per day should be
sucient. Carefully monitor water chemical balance and follow recommendations of your local pool
professional.
Water Maintenance
Keep water level at least 2” (50mm) above bottom of skimmer opening. Failure to do so can allow air to
enter system, causing pump to lose prime and air to enter filter.
Maintain pH between 7.2 and 7.6 in pool.

9Media Filter Owner’s Manual
To prevent damage to system components, keep water temperature below 38oC at all times.
Vacuum Pool
(Refer cleaner operating manual or consult your local pool professional)
1. Fill vacuum hose by submerging in water from one end to the other.
2. To vacuum, insert hose into skimmer suction manifold or into vacuum line in pool wall. See instructions
provided by the pool builder or pool manufacturer. Start pump, making sure it is primed and pumping.
3. After vacuuming, clean pump trap basket to remove accumulated debris, then check filter pressure
gauge. If reading is 5 to 7 psi (35 to 50 kPa) higher than initial operating pressure, backwash filter.
Lower or Drain Pool
1. Turn pump ‘OFF’ ; set valve handle to ‘WASTE’.
2. Use Vaccuum cleaner hose and head.
3. Start pump; run until pool is lowered to desired level.
4. Turn pump ‘OFF’ set valve handle to ‘FILTER’
5. Start pump.
Multi-Port Valve Service
If valve is leaking during normal operation it will need to be repaired by an authorised Maytronics water
service technician.
Valve Removal
Hazardous pressure. Stop pump and release all pressure from system before working on filter, valve, or
clamp.
NOTE: If Multi-Port Valve is below pool water level, close suction and discharge
valves before disassembly to prevent draining pool.
1. Disconnect piping from pump and pool.
2. Remove clamp.
3. Remove valve from filter top.
4. To re-install valve, follow instructions, BE SURE to follow clamp tightening instructions.
START UP CONT.