Pentair CRISTAL-FLO II User manual

CristalFlo II
Sand Filters
AQUATIC SYSTEMS

Page 1
Cautions and Warnings
i
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.
iAll 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 installa-
tion failure.
iThe 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.

Page 2
Contents
Cautions and Warnings 1
Contents 2
Specifications 3
Installation 4
Operation 6
Maintenance 8
Troubleshooting 9

Page 3
Specifications
Model Product Filter Area
ft2/ m2
Backwash Flow
Rate
(LPM)
Maximum Flow
Rate
(LPM)
CFSF-21-40 CristalFlo II Sand Filter 21”
/ 40mm MPV 2.5 / 0.2 120 180
CFSF-25-40 CristalFlo II Sand Filter 25”
/ 40mm MPV 3.2 / 0.3 180 280
CFSF-25-50 CristalFlo II Sand Filter 25”
/ 50mm MPV 3.2 / 0.3 180 300
CFSF-28-50 CristalFlo II Sand Filter 28”
/ 50mm MPV 4.1 / 0.38 230 340
CFSF-31-50 CristalFlo II Sand Filter 31”
/ 50mm MPV 5.0 / 0.46 260 400
Model Sand Required
(kg)
Zeolite Required
(kg)
Glass Required
(kg)
Coarse Fine
CFSF-21-40 80 75 35 45
CFSF-25-40 120 105 45 75
CFSF-25-50 120 105 45 75
CFSF-28-50 150 120 60 90
CFSF-31-50 200 165 75 125
Model A
(inch)
B
(mm)
C
(mm)
D
(mm)
Weight
(kg)
CFSF-21-40 560 980 807 747 13
CFSF-25-40 665 1076 902 842 20
CFSF-25-50 665 1076 936 855 20
CFSF-28-50 742 1076 936 855 22
CFSF-31-50 816 1233 1093 1012 28
ØA
B
C
D

Page 4
Installation
General Notes
1. When unpacking the filter, be sure the unit is complete and no visible shipping
damage has occurred.
2. Allow sufficient clearance around filter system for access and maintenance.
3. Provide adequate ventilation for pumping equipment, installed in conjunction with
filter.
4. Provide solid mounting for filter and pump. If installed outdoors, install the sys-
tem on a slab or solid concrete base to avoid risk of settlement. Filter systems
once located with sand and water can exceed a weight of 250 kg. If installed in-
doors, ensure doorway allows sufficient clearance should filter tank require re-
placing.
5. Installation of filters and pumps should be located as close to the pool as possible
to avoid excessive piping friction loss.
6. If system is installed below pool level it is important to install isolating valves to
prevent risk of flooding from back up water, from the pool or spa.
7. The proper sand selection is critical to good filter performance. Ensure that the
media is an approved form of Quartz Silica sand, glass or Zeolite.
8. The installation of filters requires no special tools.
9. Confirm that plumbing lines from pool are correctly identified. This will ensure
proper connection to markings on filter valve (i.e. “Pump”, “Waste”, and “Re-
turn”).
Loading Sand Filter
Once the filter system has been positioned, the installation of filter sand may be un-
dertaken as follows:
1. Check filter size in order to determine necessary amount of sand required.
2. Double check that the internal system consisting of a lateral hub and stand pipe
are intact inside the tank.
3. Fill tank half full with water.
4. Place the disposable loading disc into the upper tank opening and the plastic
cover over stand pipe to stabilise the filter and stand pipe. It is important that the
stand pipe remains centred through the sand loading procedure to ensure align-
ment with valve assembly opening.

Page 5
5. Proceed to load correct volume of dry sand slowly (if sand is saturated loading
can be difficult).
6. Once sand is loaded discard loading disc and check to determine if stand pipe is
properly centred in tank opening.
7. Fill with sand, glass or other approved sand to the shoulder level of the filter.
Installing Multi-Port Valve
1. Following the sand loading, clean any sand particles or debris from upper surface
of tank opening.
2. Install six (6) position selector valve after placing O-Ring in cavity on tank body.
Place valve into tank opening while ensuring that the O-Ring has remained in
position.
3. Install selector valve into top tank opening and rotate valve to best suit plumbing
lines. Once valve positioned, tighten the lock ring firmly by hand. Note: It is not
necessary to over tighten.
4. Double check that incoming pool lines are connected to appropriate valve open-
ings as marked on valve port (i.e. pump, return (pool) and waste).
5. The threaded openings on valve are 40mm or 50mm thread which all accommo-
date barrel unions supplied with the filter. O-rings are supplied to fit between the
multiport valve and barrel union. It is only necessary to tighten by hand. THE USE
OF TEFLON TAPE IS NOT REQUIRED.
6. Remove plug from side wall of valve and install threaded pressure gauge (if not
already fitted) using Teflon tape wrap. Do not over tighten. Minimal hand tighten-
ing is adequate to provide a good seal.
Installation (Continued)

Page 6
Valve Operation
The operation and the positions of valve settings are as follows:
Valve Settings Direction of Flow Through Valve
Filter (also during vacuuming) From pump down through valve, through sand
bed, up through stand pipe to valve and back
through pool return.
Back Wash From pump, through valve, down through stand
pipe, up through sand bed, and through valve to
waste.
Rinse Flow from pump, through valve, down through
sand bed, up through stand pipe, through valve
to waste. (Position also used for initial start-up
and leveling sand bed after Back-wash)
Waste From pump, through valve to waste. Also posi-
tion for lowering water level or assist in drain-
ing pool.
Closed From pump to valve without further circulation.
Prevents any flow to filter and pool.
Recirculate From pump through valve to pool. This position
bi-passes the filter and is used for circulation
of pool water only.
NOTE: Always “STOP” pump when changing selector valve position.
INITIAL START-UP
1. Make sure the correct amount of sand is in the filter tank.
2. Prime pump.
3. Set valve handle in BACK WASH position.
4. Start pump and operate in BACK WASH cycle for three (3) minutes. This will
purge the filter of excess fines in the sand.
5. Turn pump OFF and set valve handle to RINSE. Start pump and run for one (1)
minute.
6. Stop pump and set valve handle to FILTER. Restart pump. System is now operat-
ing on a normal FILTER cycle.
7. Adjust the valves in the skimmer and main drain lines (if provided) to achieve bal-
anced flow rates.
8. When a pool is filled initially, the filter may have to be BACK WASHED once a day
until the water becomes sparkling clear. From that point on, BACK WASH when
pressure gauge indicates 30 to 40 kPa higher than at starting pressure.
Operation

Page 7
OPERATIONAL & INSTALLATION TIPS
1. Always turn pump “OFF” before changing valve positions.
2. Never run pump dry as it depends on water for lubrication.
3. Always maintain minimum water level to ½ way up the skimmer mouth.
4. Clean pump strainer regularly.
5. Maintain a proper chemical balance in the pool.
6. Maximum operating pressure is 250kPa on CA Series and 200 kPa on ECA Series.
7. Ensure pressure gauge on valve is positioned so that rain water cannot collect on
glass face.
8. Back wash filter regularly for 3-5 minutes or until sight glass runs clean each
time to ensure sand is completely cleaned.
9. Always rinse for 1 minute after each backwash and before returning valve posi-
tion to filter.
Operation

Page 8
Maintenance
You new product incorporates moving parts and withstands high velocity water with
chemicals in it. Some of these parts will wear in the normal course of use and re-
quire regular checks and maintenance. Performing these checks and maintenance
will identify parts that have worn and require repair/replacement before further
serious damage is sustained. A small amount of regular care and attention to your
pool equipment will help ensure long life and trouble free performance.
Timing Maintenance Service
Fortnightly Check pressure gauge. If pres-
sure increase is greater than
20kPa cleaning may be required.
Perform backwash according to instruc-
tions.
Three Monthly Check inlet/outlet o-rings for
leaks.
Isolate Pump, turn power off, clean and
grease O-rings or replace if necessary.
Annually Compare operating pressure of
backwashed filter to initial pres-
sure (when new).
If using Zeolite, regenerate filter
sand. This is important in com-
mercial applications as it aids in
the removal of ammonias.
If pressure is more than 30 – 40 kPa differ-
ent from new filter, a sand change may be
required.
Add salt to filter sand per supplier. Allow to
sit for 24 hours then backwash, rinse and
return to filter.

Page 9
Troubleshooting
Symptom Remedy
Filter Startup
Pressure High and
Water Flow Low
Filter requires backwash - Follow backwash procedure
outlined in Manual.
Return Line restricted - Check for flow at return.
Filter Startup
Pressure Low and
Water Flow Low
Skimmer Basket full of leaves or debris - Clear Skim-
mer Basket of all foreign matter and debris.
Pump Strainer Lid not sealed correctly. - Refer to pump
Owners Manual for correct procedure for sealing
strainer lid correctly.
Pool water level too low. - Fill Pool correct level.
Pump Impeller Blocked - Call an authorised service
agent to service pump.
Short Filter Cycles Filter Dirty - Filter not backwashed for long
enough period.
Replace Media (Sand or Zelbrite)
Algae present in Pool water. - DON’T RUN FILTER
WITH LIVE ALGAE IN POOL. Check the chemical condi-
tion of pool water and refer to Pool Water Chemical
Treatment. Note: Incorrect chemical treatment will
greatly shorten filter cycle.
Leaking From
Filter Tank Joint
Tank o-ring dirty
O-ring incorrectly fitted - or pinched
Clamp Band not correctly fitted