MANUAL - Hills Sparkling Pools

DM-52
VIC, SA and NT Distributors:
Flowcontrol Pty Ltd
87-89 Woodlands Drive, Braeside VIC 3195
Phone (03) 9587 981118
Charles Street, Allenby Gardens SA 5009
Phone (08) 8346 9100
Fax (08) 8358 6015
flowcontrol@bigpond.com
DOMESTIC
CHEMICAL
CONTROLLER
INSTALLATION AND OPERATING
MANUAL
(Solenoid Valves Version)
Sept 2006
DO NOT DISCARD THIS MANUAL
WHEN THE INSTALLATION IS COMPLETE
AS IT PROVIDES IMPORTANT INFORMATION
FOR OPERATING THE UNIT.
40
Problem Solving Continued...
High Chlorine Alarm ....................................................................................... 34
High pH Alarm (Insufficient Acid) ................................................................... 35
Low Chlorine Alarm ........................................................................................ 34
Low pH Alarm (Excess Acid) .......................................................................... 35
Pool Acid (pH):
Dilutions .......................................................................................................... 32
Manual Dosing ......................................................................................... 23&26
Re-Calibrating ................................................................................................. 26
Turn On and Off .............................................................................................. 25
Multi-Electrode (Probe):
Cleaning ......................................................................................................... 35
Description ........................................................................................................ 6
Emptying Swimming Pool and Freezing Conditions ...................................... 25
Installation ...................................................................................................... 10
Installation Diagram ........................................................................................ 14
Pump Timer:
Automatic Settings ......................................................................................... 28
Description ................................................................................................ 20&27
Disabling Timer ............................................................................................... 27
Factory Set Times .......................................................................................... 28
Manual Starting .............................................................................................. 27
Setting Timer .................................................................................................. 27
Turning Off ...................................................................................................... 27
Regular Checks on the Quality of Pool Water ......................................... 4,19&20
Safety Instruction ........................................................................................... 3&19
Sinker Sets
Description ........................................................................................................ 6
Installation .................................................................................................. 7&11
Installation Diagram ........................................................................................ 13
Solenoid Valves:
Installation ...................................................................................................... 11
Installation Diagram ........................................................................................ 13
Regular Checks .............................................................................................. 20
Tubing Installation .......................................................................................... 11
Tapping Band:
Air Leaks ........................................................................................................... 9
Description ........................................................................................................ 6
Drilling Holes ............................................................................................ 10&14
Emptying Swimming Pool and Freezing Conditions ...................................... 25
Inner Shell ................................................................................................ 10&14
Installation ...................................................................................................... 10
Installation Diagrams ................................................................................ 13&14
Location .......................................................................................................... 10
Trapped Air Bubbles & Dirt ............................................................................. 10
Test Kit ........................................................................................................... 8&19
Tools Required ..................................................................................................... 8
Venturi System ............................................................................................. 12&16
Voltage ................................................................................................................. 4
Wall Anchors and Screws .................................................................................... 7
Warranty ............................................................................................................ 37
Warnings .............................................................................................................. 3
Water Circulation ......................................................................................... 5 & 28
1
CONTENTS
PAGE
Important Safety Instructions ................................................................................. 3
Message to the New Owner ................................................................................... 4
PREPARATION
Items Supplied ........................................................................................................ 6
Tools Required ........................................................................................................ 8
Other Items Required ............................................................................................. 8
INSTALLATION
Location .................................................................................................................. 9
Power Connection .................................................................................................. 9
Chemigem Installation ............................................................................................ 9
Tapping Band Installation ....................................................................................... 9
Multi-Electrode (probe) Installation ...................................................................... 10
Solenoid Valve Installation ................................................................................... 11
Solenoid Valve Tubing Installation ....................................................................... 11
Chemical Drums Installation ................................................................................. 11
Fitting Chemigem to a Heated Pool ..................................................................... 12
Fitting Chemigem Below Pool Water Surface Level ............................................ 12
Venturi Systems .................................................................................................... 12
Neatening Up ........................................................................................................ 12
Installation Diagram .............................................................................................. 13
Tapping Band and Multi Electrode (Probe) Diagrams ......................................... 14
Diagram for Fitting Chemigem Below Surface Level ........................................... 15
Diagram for Fitting Chemigem to a Heated Pool ................................................. 16
OPERATION
Introduction ........................................................................................................... 17
Reading the Display Panel ................................................................................... 17
Before Starting the Chemigem ............................................................................. 19
Starting the Chemigem ......................................................................................... 20
The First Two Weeks ............................................................................................ 20
Regular Checks on the Quality of Pool Water ..................................................... 21
Regular Checks of the Solenoid Valve Tubing ..................................................... 21
KEYPADS
No. 1: “ Pump” ...................................................................................................... 22
No. 2: “Escape and Mute Alarm” ......................................................................... 22
2
No. 3: “Help” ..................................................................................................... 22
No. 4: “Enter” .................................................................................................... 23
No. 5: “Chlorine Manual Feed” ........................................................................ 23
No. 6: “Pool Acid Manual Feed” ....................................................................... 23
No. 7&8: “ Automatically Increase & Decrease Pool Acid Set Levels” ............. 24
No. 9&0: “ Automatically Increase & Decrease Chlorine Set Levels” .............. 24
Emptying Swimming Pool and Freezing Conditions ............................................. 25
Turning On and Off the Chlorine and Pool Acid .................................................... 25
Manual Dosing Override ........................................................................................ 26
Re-calibrating pH ................................................................................................... 26
Re-callibrating Chlorine ......................................................................................... 26
POOL PUMP TIMER
Setting the Inbuilt Pool Pump Timer ................................................................. 27
To Turn Off The Inbuilt Pool Pump Timer ......................................................... 27
If The Inbuilt Pool Pump Timer is Disabled ...................................................... 27
Manual Starting of the Inbuilt Pool Pump Timer ............................................... 27
Setting Automatic Pool Pump Times ................................................................ 28
To Set the Clock ................................................................................................ 28
ALARMS
Indicator Light and Sound ................................................................................. 29
The Normal Range ............................................................................................ 29
Ouside the Normal Range ................................................................................ 29
The Audible Alarm ............................................................................................. 30
Alarm Light and Sound - Steps to Take ............................................................ 30
CHEMICALS
Chemical Feeding ............................................................................................. 31
Adjustments to Chemical Levels ....................................................................... 31
Important Points to Note ................................................................................... 32
Pool Chemical Dilutions .................................................................................... 32
PROBLEM SOLVING
Low Chlorine Alarm ............................................................................................... 34
High Chlorine Alarm ............................................................................................... 34
Low pH Alarm (excess Acid) .................................................................................. 35
High pH Alarm (insufficient Acid) ........................................................................... 35
Cleaning the Multi-Electrode (probe) .................................................................... 35
Problem Solving Flow Chart .................................................................................. 36
Warranty ....................................... ……………………………………………………37
Index ...................................................................................................................... 38
39
Chemicals continued...
Set Levels ....................................................................................... 17,18,20&24
The First Two Weeks ...................................................................................... 20
Turning Off and On Chlorine and Pool Acid (pH) .............................................. 25
Chlorine:
Dilutions .................................................................................................... 32&33
Manual Dosing .......................................................................................... 23&26
ORP ................................................................................................................ 17
Re-calibrating ................................................................................................. 26
Turn On and Off .............................................................................................. 25
Clock .................................................................................................................. 28
Contact Flowcontrol .......................................................................................... 5
Concrete Pools .................................................................................................. 20
Diagrams:
Display Panel .................................................................................................. 17
Fitting Chemigem Below Pool Water Surface Level ...................................... 12&15
Fitting Chemigem to a Heated Pool ............................................................... 16
Installation of Chemigem ................................................................................ 13
Installation of Tapping Band & Multi-Electrode (Probe) ................................. 14
Problem Solving Flow Chart ........................................................................... 36
Display Panel:
Alternative Display .......................................................................................... 18
Diagram .......................................................................................................... 17
Operations ...................................................................................................... 18
Reading Panel .......................................................................................... 17&18
Electrician ......................................................................................................... 9
Emptying Swimming Pool .............................................................................. 25
Filters:
Description ........................................................................................................ 7
Installation ....................................................................................................... 11
Installation Diagram ........................................................................................ 13
Freezing Conditions ........................................................................................... 25
Heating Systems ......................................................................................... 12&16
Isolating Valve .................................................................................................... 12
Keypads:
No. 1 - Pump .................................................................................................. 22
No. 2 - Escape and Alarm Mute ..................................................................... 22
No. 3 - Help .................................................................................................... 22
No. 4 - Enter ................................................................................................... 23
No. 5 - Chlorine Manual Feed ........................................................................ 23
No. 6 - Pool Acid Manual Feed ...................................................................... 23
No. 7&8 - Automatically Increase and Decrease Pool Acid Set Levels ......... 24
No. 9&0 - Automatically Increase and Decrease Chlorine Set Levels ......... 24
Mains Power ........................................................................................................ 4
Message to New Owner ...................................................................................... 4
Non-Return Valve .............................................................................................. 12
Protective Cap ...................................................................................... 10,14 &25
Neatening Up ..................................................................................................... 12
ORP ................................................................................................................... 17
Password ........................................................................................................... 18
Problem Solving:
Flow Chart ...................................................................................................... 36
38
3
INDEX
Air Leaks ................................................................................................ 9
Alarms:
Audible Alarm ................................................................................... 30
Indicator Light and Sound ................................................................ 29
Light & Sound – Steps To Take ........................................................ 30
Lower or Turn Off Alarm Sound ........................................................ 30
Normal Range .................................................................................. 29
Outside Normal Range ..................................................................... 29
Balancing Pool Water ................................................................... 19&31
Chemigem:
Backflow ........................................................................................... 12
Before Starting the Chemigem ......................................................... 19
Description .......................................................................................... 6
Feeding ................................................................................. 19,20&31
Fitting Below Pool Water Surface Level ........................................... 12
Fitting Below Pool Water Surface Level –Diagram .......................... 15
Installation .......................................................................................... 9
Installation Diagram .......................................................................... 13
Location .............................................................................................. 9
Metal Cover ................................................................................... 8&9
Non Return Valves ............................................................................ 12
Operation ..................................................................................... 4&17
Power Connection .............................................................................. 9
Settings ............................................................................ 17,18,20&24
Suction ...................................................................................... 4,9&12
Starting the Chemigem ..................................................................... 20
The First Two Weeks ........................................................................ 20
Chemical Drums:
Drums ............................................................................................... 11
Installation ........................................................................................ 11
Installation Diagram .......................................................................... 13
Chemicals:
Adjustment to Chemical Levels ........................................................ 31
Concrete Pools ................................................................................. 20
Dilutions ..................................................................................... 32&33
Dosing ............................................................................................... 20
Excess Chemicals ................................................................ 20,32&35
Feeding ................................................................................. 19,20&31
Important Points To Note .................................................................. 32
Installation ........................................................................................ 11
Installation Diagram .......................................................................... 13
Introduction to Operation .................................................................. 17
Manual Dosing Override .................................................................. 26
ORP .................................................................................................. 17
Ranges for Chemicals ............................................................... 19&31
Re-calibrating pH .............................................................................. 26
Re-calibrating Chlorine ..................................................................... 26
Regular Checks ................................................................................ 21
IMPORTANT SAFETY INSTRUCTIONS
CAREFULLY READ THE ENTIRE CONTENTS OF THIS MANUAL
CAREFULLY READ THE FOLLOWING POINTS BEFORE INSTALLING
THE CHEMIGEM
WARNING It is important that the Chemigem is installed and operated in accordance
with the instructions provided in this manual.
WARNING There is the risk of electric shock. Ensure all connections from the Chemigem to the
electricity supply are made in accordance with local safety codes.
WARNING Do not bury any electricity supply cords unless strictly following local safety codes.
Locate all cords, wires and tubes away from places where they may become damaged by garden
equipment.
WARNING The Chemigem contains microprocessors that may be disturbed by the operation of
electrical devices within a 5 metre radius.
WARNING The Chemigem must be connected so that it only operates when the pool pump is
running, otherwise incorrect pool water readings will occur and concentrated chemicals may
flow into the pool water pipes and/or the chemical drums, where they can mix and produce
poisonous Chlorine gas.
WARNING Before operating the Chemigem, bring the pool water chemical levels to within the
ranges given in this manual, but pay attention to the specific requirements of the pool builder.
WARNING To ensure the desired chemical levels are being maintained, check the pool water
with a good quality test kit. This should be performed daily for the first two weeks and on a
regular basis thereafter.
WARNING Always take water samples from a point near the skimmer box, for this is where the
water is completely mixed, giving the most accurate readings. Never take water samples near the
pool returns (“eye-balls”) where the Chemigem may have freshly dosed the pool water.
WARNING It is very important that the reagents in the test kit are well within their use-by date,
otherwise false readings may result. If in doubt, take a water sample to a pool shop for testing.
WARNING Chemicals must be carefully diluted according to the size of the pool or spa. Always
add the concentrated chemical to the water and never add the water to the concentrated chemical.
Some chemicals react violently with water and can splash into face and eyes. Always wear
protective face-shield and gloves for such operations. Fully observe all the chemical manufacturer’s
safety instructions when handling pool chemicals.
WARNING Ensure the chemical supplies (liquid Chlorine and pool Acid) are kept in visually
different containers to avoid wrong connection. Use colour or size differences or both. When
these two concentrated chemicals are mixed together out of the pool water, poisonous gas is
produced.
WARNING If it is decided to turn off the Chemigem audible alarm for any reason, the unit
will no longer have that warning capability and the pool owners will have to rely on their own
ability to monitor the indicator lights on the face of the unit to verify that the Chlorine and pH
levels are within acceptable limits.
SAVE THESE SAFETY INSTRUCTIONS
4
MESSAGE TO THE NEW OWNER
Congratulations on your purchase of a Chemigem DM52
Ensure that the Unit Matches the Mains Power
The Chemigem requires a mains supply of 220/250 volts AC
Although the unit has an in-built surge protector, it is recommended that a voltage
surge protection device be fitted to the electricity supply.
Prior to Installation and Operation
It is important that a full water test is carried out with a good quality test kit
and that the pool water is correctly balanced prior to the installation and
operation of the Chemigem.
The pool builder often includes the first amounts of chemicals. These are estimated
and sometimes require adjustment.
Chemigem Installation and Operation
The unit is one of the most advanced pool chemistry controllers of its kind.
It is important that it is installed and operated in accordance with the instructions provided
in this manual.
The Chemigem is designed to automatically assist in keeping the levels of Chlorine
and pH correctly balanced in swimming pools and spas.
It continuously monitors and adjusts pH and Chlorine levels required through state of
the art solenoid valves, utilising the natural suction of the pool recirculating pump while
the pool pump is running adds Chlorine and pool Acid as and when required.
Stable controlling of the Chlorine and pH levels of the pool water should be achieved
during the first two weeks of operation. During this period, check the level of Chlorine,
Total Alkalinity and pH regularly with a good quality test kit to confirm that the unit is
keeping to the desired levels (Refer to pages 19&31).
The chemical levels are set by the keypads. Once the correct positions have been set
for the pool water they should remain constant and do not have be changed from
season to season (however in winter the pool pump running times can be reduced)
If the pool owner requires the levels to be altered, refer to page 24)
Electronic Clock
The in-built electronic clock requires setting to your local time. To set the clock,
(Refer to page 28).
Pool Pump Times
The factory-set pool pump times are on page 28. To change pumping times or to turn
the timer off,(Refer to pages 27&28).
37
DOMESTIC
WARRANTY
REPLACEMENTS
COMPONENTS OTHER THAN THE MULTI-ELECTRODE (PROBE)
Flowcontrol undertakes to rectify, free of charge, any defects caused solely by faulty
workmanship or materials occurring in the Chemigem control unit for a period of 12
months
MULTI-ELECTRODE (PROBE)
The multi-electrode (probe) has a 12 months full cover warranty, followed by a 48 months
pro-rata warranty.
SERVICING IN THE WARRANTY PERIOD
In the event of any apparent malfunction during the Warranty period, the purchaser of
the Chemigem should first read the Installation and Operating Manual. If this does not
solve the problem, Flowcontrol should be contacted.
FEES
During the warranty period, when an authorised technician is requested to service the
unit at a location other than the company premises, a call out fee will be charged to
cover travelling to and from the site and the cost of operating the vehicle. The fee will
not apply if the unit is returned to the manufacturer or distributor in your state for repairs.
If an authorised tecnnician is required to service the unit and it is found that such services
are not covered by warranty, a charge for parts and labour will apply.
Where the unit is installed outside the normal service area, the purchaser shall be
responsible for all costs and risk involved in returning the unit to the manufacturer for
repairs and reinstallation.
WARRANTY EXCLUSIONS
Flowcontrol accepts no responsibility under this Warranty for damage including:
·
Consequential damage resulting from misuse of the Chemigem
·
Incorrect usage of the Chemigem
·
The use of other than Chemigem parts
·
Installation or repair in any way such that the performance or working life expectancy
of the Chemigem is impaired
The liability under this Warranty shall not include any costs, contingent or otherwise, or
liability for damage sustained by the customer or others, whether or not these costs or
damages are due to the malfunction, wrong operation or actions by Flowcontrol or the
authorised representatives of Flowcontrol, but shall be limited solely to the repair or
replacement of the product
FLOWCONTROL EXPRESSLY DISCLAIMS ANY OTHER EXPRESS OR IMPLIED
WARRANTIES INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE.
UNIT SERIAL NUMBER …………………
5
REPLACE
MULTI-ELECTRODE
CORRECT READINGS
CHECK VALVES ARE OPENING
PRESS MANUAL FEEDS
AND MAKE SURE
CHEMICALS ARE FLOWING
IF NECESSARY ADD STABILISER,
SODIUM BICARBONATE, CALCIUM
CHLORIDE TO RESTORE
CORRECT LEVELS
COMPLETED
PROBLEM SOLVING
REPLACE
CIRCUIT BOARD
REPLACE VALVES
CLEAN EXISTING MULTELECTRODE AND REFIT.
WAIT MINIMUM HALF HOUR
REPLACE
TUBING
To enable the Chemigem to work efficiently, the mixing of the pool water has to be as
quick and complete as possible. Positioning the return nozzles (eyeballs) to the pool
so that the main water-body rotates is the best way to achieve this. Under no
circumstances should the eyeballs be positioned to produce opposing circulation
patterns. The unit’s multi-electrode (probe) monitors the Chlorine and pH levels as
the water travels towards the pump.
If the mixing of the pool water is slow, the multi-electrode (probe) will not receive the
signal until large amounts of chemicals have been added to the water. When the
multi-electrode (probe) finally receives the signal, the pool water may be overdosed
and the excess warnings will operate.
Heated Pool
CHECK
TUBING
REMOVE EXISTING MULTI-ELECTRODE
AND FIT A NEW ONE.
ARE CHEMICAL READINGS CORRECT?
REFER TO TESTS ABOVE
CHECK FOR
LEAKING VALVES
(VALVES STUCK OPEN)
REPLACE
DRUMS
CHECK CHEMICAL
LEVELS IN DRUMS
CHECK CHEMICAL
LEVELS, REFER TO
TESTS ABOVE
LOW CHEMICALS
CHECK SUCTION
(NEGATIVE 20kPa)
TAPPING BAND NIPPLE
MAY BE BLOCKED
FIX
PROBLEM SOLVING
FLOW CHART
SWITCH ON
PUMP
TEST WATER FOR
CHLORINE, PH, TOTAL
ALKALINITY AND
'STABILISER
CHECK FOR
AIRLEAKS
TAPPING BAND MAY
BE BROKEN
FIX
EXCESS CHEMICALS
Pool Water Circulation
If the one pool pump is required to service both the pool heating system and
the Chemigem, the pool heating plumbing must be bypassed. (Refer to pages
12&16)
6
PREPARATION
ITEMS SUPPLIED
A brief description of the items supplied and the purpose of each item:
Chemigem
The sealed unit is connected to the solenoid valves and assists in keeping the levels
of Chlorine and pH correctly balanced in swimming pools and spas. (Refer to diagram
on page 13)
Key features:
• A computerised on-screen HELP menu
•
•
•
An automatic pool pump timer
An easy-to-read screen showing chemical settings and actual chemical readings
Indicator light and audible alarm that monitor whether pool water chemical levels
are within the required range
Multi-Electrode (probe)
The one Multi-Electrode (probe) is fitted into the side arm of the tapping band that is
then clamped around the PVC pipe running from the pool to the pool pump..
The one multi-electrode (probe) monitors both the Chlorine and pH levels.
It is mounted into the tapping band on the inlet (suction) side of the pool pump.
Chemical readings obtained by the multi-electrode (probe) are monitored by the
Chemigem, resulting in Chlorine and/or pool Acid being dosed into the pool water as
and when required via the solenoid valves and tapping band injector nozzle. (Refer
to diagram on pages13&14)
Tapping Band
The tapping band is inserted into the PVC pipe on the inlet (suction) side of the pool
pump. (Refer to diagram on page 13)
A detailed diagram of a tapping band is provided on page 14.
The purpose of the tapping band is to house the Multi-Electrode (probe) and to provide
an injector nozzle for chemicals being dosed into the pool water via the solenoid
valves.
Solenoid Valves
The solenoid valves contain the only two moving parts in the Chemigem package.
The purpose of the solenoid valves is to control the flow of Chlorine and/or pool Acid
from the chemical drums as and when required and to inject the chemical(s) into the
pool water via an injector nozzle on the tapping band.
(Refer to diagram on page 13)
35
LOW pH ALARM (Excess Acid)
This indicates that the pH level in the water is considerably lower than that which
was set. The Chemigem cannot do anything about this condition except warn about
it. However as a safeguard, the unit operates a lock on any more additions of Acid
(that would only make matters worse) until the pH is brought back into the normal
range with the addition of some Sodium Carbonate or Sodium Bicarbonate.
Low pH levels could be due to the following:
•
Manual overdosing with pool Acid
•
Poor pool water circulation leading to over-dosing.
•
Excessive rainfall (that is slightly acidic) neutralising the alkalinity of the pool.
•
A faulty solenoid valve.
•
Multi-electrode (probe) requires cleaning (Refer to Cleaning Instructions below)
HIGH pH ALARM (Insufficient Acid)
This indicates that the pH level in the water is considerably higher than that which
was set. In this case the Chemigem will be in a locked condition and will not dose
further pool Acid until the lock mechanism is overridden. This is carried out by pressing
the ESC keypad No.2. The unit will then dose further pool Acid until the level for pH
that was set has been reached.
High pH levels could be due to the following:
•
Initial conditions in a new plaster lined pool being very alkaline and overwhelming
the unit’s ability to dose sufficient acid.
•
The unit has a proportional acid setting that may have been adjusted to add
insufficient acid
•
The Acid drum may be empty
•
Super chlorinating the pool
•
The injector nozzle in the tapping band is clogged
•
The venturi system (if fitted) is clogged
•
A faulty solenoid valve
•
The filter needs backwashing
•
Multi-electrode (probe) requires cleaning (Refer to Cleaning Instructions below)
CLEANING THE MULTI-ELECTRODE (PROBE)
•
•
•
•
•
Remove from the tapping band by unscrewing the retaining nut and pulling out
the multi-electrode (probe)
Holding the cable, gently swirl the multi-electrode (probe) sensing components
in a dilute solution of Hydrochloric Acid for 30 seconds.
Rinse the multi-electrode (probe) in clean water
Replace the multi-electrode (probe), making sure the “O” seal is in place
Screw up the nut with fingers only. (Refer to page 10)
34
PROBLEM SOLVING
LOW CHLORINE ALARM
This indicates that the Chlorine level in the pool water is considerably lower than the
level that was set.
The Chemigem will restore the level by feeding Chlorine approximately every 3
minutes until the set level is reached again (however feeding may be inhibited by
one of the factors listed below). As the Chlorine level in the water approaches the set
level, the warning sound and the red warning light will switch off, but the warning
sound may be switched off at any time by pressing the ESC keypad No.2. This
sound will come on again the next time the pool pump operates if the Chlorine level
is still too low.
Low Chlorine levels could be due to the following:
•
Excessive bather load
•
The Chlorine drum is empty
•
Increasing the set level by a large amount
•
The filter has been off for a long period on a hot day
•
The Stabiliser level is too low
•
The pH is too high
•
The filter requires backwashing
•
The strainer (part of the pump) requires cleaning out.
•
Inadequate pool water circulation
•
The injector nozzle in the tapping band is clogged
•
The venturi system (if fitted) is clogged
•
A faulty solenoid valve
•
Multi-electrode (probe) requires cleaning (Refer to page 35)
HIGH CHLORINE ALARM
This indicates that the Chlorine level in the pool is considerably higher than that
which was set. Should this be due to an intentional overdose (super chlorination or
shock treatment) it may be some days or even weeks before the level drops and the
warnings turn off.
High Chlorine levels could be due to the following:
•
Manual overdosing with Chlorine
•
The pH is too low (too much pool Acid)
•
Changing the set level to a much lower setting
•
High total dissolved Solids (TDS) level (above 2000 ppm)
•
Inadequate pool circulation
•
The solenoid valve is faulty
•
Multi-electrode (probe) requires cleaning (Refer to page 35)
7
Coil of Plastic Tubing
The plastic tubing is connected from the solenoid valves to the chemical drums and
the tapping band. (Refer to diagram on page 13)
Filters
There are two types of filter:
• In-Line Filter
•
Drum Filter
The In-Line Filters are connected to the plastic tubing for both the Chlorine and pool
Acid tube lines, between the respective chemical drums and the solenoid valves.
(Refer to diagram on page 13)
The Drum Filters are connected to the plastic tubing. One is placed in the Chlorine
drum and the other is placed in the pool Acid drum. (Refer to diagram on page 13)
Sinkers
The Sinkers are fitted above the Drum Filters. The purpose of the sinkers is to
provide added weight to the Drum Filters so that the filters do not float and remain
positioned close to the bottom of the chemical drums. (Refer to diagram on page 13)
Wall Anchors and Screws
There are two wall anchors and screws for the affixing of the unit to a solid surface.
Wall anchors and screws are also supplied to affix the solenoid valves to a solid
surface.
8
33
TOOLS REQUIRED
Chlorine
The following is a list of tools required together with the purpose for each tool:
The Chemigem is designed to automatically help keep the correct level of Chlorine
(and pH) in pool water by continuously monitoring the water chemistry while the pool
pump is operating. Chlorine (and pool Acid) is dosed into the pool water as and
when necessary.
The Chlorine in common use is a sodium hypochlorite solution. The Chemigem uses
this chemical.
Diluting Chlorine is strongly recommended as follows:
•
Pools larger than 90,000 litres ................... 20 litre drum or larger
•
20,000 to 90,000 litres ............................... 20 litre drum
•
10,000 to 20,000 litres ............................... 20 litres diluted 1:1 with water
•
Spas/pools 2,000 to 10,000 litres .............. 20 litres diluted 1:15 with water
•
Spas less than 2,000 litres ........................ 10 litres diluted 1:20 with water
19mm Hole Saw
To drill a hole in the PVC pipe for the fitting of the tapping band. (Refer to diagram on
page 14).
A hole saw can be purchased from most hardware stores
Spirit Level
For fitting the Chemigem horizontally to a solid surface. (Refer to diagram on page
13)
Electric or battery charged drill
For drilling screws to hold the Chemigem and Solenoid valves
Drill Bits
• 5mm masonry drill bit for wall anchors (Refer to page 9)
• 3mm twist drill (for metal sheet or wood fixing)
• 10mm drill (for making holes in the lids of chemical drums)
Knife
For cutting the plastic tubing to required lengths
Screwdriver
For affixing self tapping screws
Tape Measure
To measure for the location of Chemigem components
Wrench
For tightening the tapping band. (Refer to page 10)
OTHER ITEMS REQUIRED
Other items required together with a brief description of the purpose of the items:
Pool Water Test Kit
A good quality test kit is essential for testing the pool water.
The pool water must be tested and balanced before the Chemigem is turned
on.
Chemicals
(Refer to pages 31 to 33)
PVC Tape
For use on the chemical drums, solenoid tubing and loose wires. (Refer to pages
11&12).
Protective Face Shield and Gloves
For use when diluting chemicals. (Refer to page 19)
Metal Cover
An optional metal cover can be purchased from the supplier of the Chemigem. (Refer
to page 9)
32
9
IMPORTANT POINTS TO NOTE
•
•
•
•
•
•
•
•
Adding chemicals will take only a few minutes but removing the chemicals
depends upon the natural dissipation from the pool water, which could take
weeks
Add pool chemicals slowly and with appropriate care, allowing sufficient time for
complete dissolving and mixing throughout the pool water and then carry out
water tests to determine whether the correct amounts have been added
Take samples at a point near the skimmer box, for this is where the water is
completely mixed, giving the most accurate readings. Never take samples near
the pool returns (eyeballs) where the Chemigem may have freshly dosed the
pool water
Do not overdose the pool water with either Chlorine, pool Acid or Stabiliser
pH is lowered by the addition of pool Acid
Excess pool Acid (low pH) is neutralised with Sodium Carbonate (strong) or
Sodium Bicarbonate (less strong)
Excess Chlorine is neutralised with Sodium Thiosulphate
Excess Alkalinity is neutralised with Hydrochloric acid (Muriatic acid)
POOL CHEMICAL DILUTIONS
Pool Acid
The Chemigem is designed to automatically help keep the correct level of pH (and
Chlorine) in pool water by continuously monitoring the water chemistry while the
pool pump is operating. Pool Acid (and Chlorine) is dosed into the pool water as and
when necessary.
There are two kinds of pool Acid in common use and the unit is able to use both:
•
Hydrochloric Acid (muriatic acid).
•
Non-Fuming Pool Acid (dilute sulphuric acid)
It is strongly recommended that the non-fuming pool Acid be used because
the Hydrochloric acid gives off corrosive and highly irritating fumes in its
concentrated form. It must be kept at least 6 feet from the unit unless diluted at
least 5 to 1 with water.
Diluting Pool Acid is strongly recommended as follows:
•
Pools larger than 90,000 litres ..................... 15 litre drum, full strength
•
50,000 to 90,000 litres ................................. 15 litres diluted 1:5 with water
•
10,000 to 50,000 litres ................................. 15 litres diluted 1:10 with water
•
Spas/pools 2,000 to 10,000 litres ................ 15 litres diluted 1:15 with water
•
Spas less than 2,000 litres .......................... 15 litres diluted 1:20 with water
IMPORTANT Always add concentrated Acid to the water not the water to the
concentrated Acid. Small quantities of water will react violently with
concentrated Acid, giving off heat and boiling the water that may splash Acid.
INSTALLATION
LOCATION
For ease of installation and for safety, the Chemigem must be installed as follows:
•
In a normal upright position (with the printing on the front reading horizontally)
and protruding cords facing toward the ground.
•
Attached to a solid vertical surface to provide easy access to the power supply
and should preferably be fixed at eye level. (refer to page 13)
To obtain maximum life for the unit it is recommended that it be located in a
sheltered and shaded position. Should this not be possible, an optional metal
cover can be purchased.
(Refer to pages 12, 15&16 for the special procedures required for the placement
of Chemigem when the pool pump and filter are located below pool water
surface level and when the pool has a heater unit)
Devices such as cell-phones, radios and portable CD players, are capable of emitting
radio waves that may interfere with the correct operation of the Chemigem. Avoid
using these devices within a radius of 5 metres of an operating Chemigem.
POWER CONNECTION
It is important that the Chemigem only operates when the pool pump is running.
To ensure this happens, plug the pool pump into the socket in the base of the
Chemigem and then plug the Chemigem into the power supply.
If the Chemigem is left switched on when the pool pump is off, the Multi Electrode
(Probe) will quickly pick up false readings from the non-moving water and signal
warnings until the unit is switched off.
CHEMIGEM INSTALLATION
Position the Chemigem within 3 metres of the tapping band at a convenient height for easy
operation, preferably at eye level. (Refer to diagram on page 13).
If it is impractical to install the unit at eye level because of site restrictions, install it at any height
above the solenoid valves that provides ease of access and operation in a normal upright
position (with the printing reading horizontally and protruding cords facing toward the ground).
The solenoid valves must be above the height of the chemical drums.
TAPPING BAND INSTALLATION
Air Leaks
Before commencing the installation of the tapping band, check for air leaks in the
suction line by switching on the pool pump and checking the lint pot. If there are
large quantities of air bubbles swirling around which do not clear within 2 to 3 minutes,
it is likely the system has an air leak in the suction line between the pool and the pool
pump.
If a pool-cleaning device is in use, carefully check the flexible hose for small pinholes
that allow the entry of air into the suction line.
10
Installation
Turn off the pool pump before commencing the installation of the tapping band.
Refer to the diagrams on pages 13 and 14 showing:
•
The components to be connected to the PVC pipe
•
The connection of the multi-electrode (probe) to the tapping band
•
The location of the multi-electrode (probe) and tapping band
It is imperative to fit the tapping band to the inlet (suction) side of the pool pump (Refer
to diagram on page 13) unless using a venturi system. (Refer to pages 12 & 16) The
required range of pressure/suction is negative 20 kPa to negative 70 kPa
After selecting the position for the tapping band on the pool pump inlet pipe, ensure
that it is as near as possible to the pool pump.
When the Chemigem is working it is essential that the multi-electrode (probe)
and injector nozzle be in a rapidly moving water stream. If not, the unit will
display incorrect and erratic readings and may cause excess additions of
concentrated chemicals.
The tapping band can be positioned on either horizontal or vertical pipes, provided the
multi-electrode (probe) is fitted exactly horizontally.
•
If the multi-electrode (probe) is positioned with the sensor tips aiming downwards
it will trap air bubbles
•
If the multi-electrode (probe) is positioned with the sensor tips aiming upwards it
will trap dirt or debris
Both of these positions will cause erratic and false readings of the swimming pool
chemical levels.
Drilling the Tapping Band Holes
•
•
•
Drill a hole using a 19mm hole-saw through both sides of the PVC pipe
Ensure the surround to the hole at the “O” ring contact is smooth and clean
Fit the tapping band, first checking that the “O” rings are in position and that the
arrow on the tapping band points toward the pool pump
Do not use grease or sealing compound on this fitting.
To check the accuracy of the tapping band position look through the multi-electrode
(probe) arm (feel with your finger or use a mirror if the position is inaccessible) making
sure the multi-electrode (probe) is lined up exactly with the holes. Tighten by hand
and then give the nuts half a turn with a wrench. If the tapping band is over tightened
it will split.
Inner Shell of Tapping Band
The inner shell of the tapping band is used if the PVC pipe has a 40mm diameter.
If 50mm diameter PVC pipe is used, the inner shell of the tapping band is not required.
(Refer to diagram on page 14).
MULTI-ELECTRODE (PROBE) INSTALLATION
•
Remove the multi-electrode (probe) protective cap, before fitting the multielectrode (probe) to the tapping band (Refer to diagram on page 14).
The protective cap should be retained for possible future use. (Refer to
page 25)
•
Fully insert the multi-electrode (probe) (with “O” ring fitted) into the tapping band
and hand tighten only.
Do not use grease or sealant on this connection to avoid contaminating the
sensing part of the multi-electrode probe.
31
CHEMICALS
CHEMICAL FEEDING
Depending upon how the unit has been programmed, the standard procedure is that
the first time that the unit operates it will take approximately 120 minutes to fully
adjust to the required levels of Chlorine and pH. Thereafter it will normally restore
the required levels in approximately 30 minutes.
Ensure that the pool pump is running for a sufficient period to carry out these
adjustments.
ADJUSTMENTS TO CHEMICAL LEVELS
The day following the installation of the Chemigem and after the pool pump has
been running for 30 minutes, check the level of Chlorine and pH with a good quality
test kit. If either of the levels is not exactly at the levels required, alter the settings a
little with keypads No’d 7 and 8 or 9 and 0. The Chemigem will bring about the
changes to the chemistry of the pool water as the pool pump circulates the water.
It is suggested that swimming pool water should be maintained within the following
ranges and that these ranges are confirmed with your local authorities as meeting
their standards:
•
CHLORINE
1.0 to
3.0 ppm or
3.0 mg/l
•
pH
7.2 to
7.8
•
CALCIUM HARDNESS
90
to 300 ppm or 300 mg/l
•
STABILISER
30
to 50 ppm or 50 mg/l
•
TOTAL ALKALINITY
80
to 300 ppm or 300 mg/l
•
TOTAL DlSSOLVED SOLlDS (TDS) 300
to 1500 ppm or1500 mg/l
The Chemigem will work at maintaining Chlorine (ORP) levels within a range of 600
- 700 millivolts when set at 650 and pH levels within 0.2 pH units of that set.
It has been found that if ORP is maintained at 650 millivolts, the kill time of E-coli
type bacteria is about one second.
If the ORP is lowered to 550 millivolts, the same organisms could take up to 2 hours
to be eliminated.
The pH scale runs from 1 to 14, with 1 being strongly acid and 14 being strongly
alkali.
Pool water should be between pH 7.0 and 7.8 (which is almost neutral) so it is not
harmful to humans.
pH values at the upper and lower ends of this scale are very dangerous.
pH is also very important in keeping pool surfaces from degrading too rapidly. Too
much acid (too low a pH value) will cause plaster surfaces to degrade quickly. The
unit is factory - set to help maintain pH at 7.7 to keep the pool plaster in good condition.
If after a few days the unit is not able to keep within these ranges, consult the Problem
Solving pages 34 to 36 in this manual and/or contact the supplier of the Chemigem
or a qualified pool maintenance technician.
30
11
THE AUDIBLE ALARM
SOLENOID VALVE INSTALLATION
The alarm sound can be turned down in volume or completely off if required. It may
be temporarily muted by pressing keypad No. 2, leaving the red warning light flashing
and the screen message to indicate the warning state. However, the next time the
pump turns on it will restore the warning sound unless the pool chemistry has been
brought back into the normal range.
If it is decided to turn off the audible alarm for any reason, the Chemigem will
not have that warning capability and the pool owners will have to rely on their
own ability to monitor the indicator lights on the face of the unit to verify that
the Chlorine and pH levels are within acceptable limits (Refer to pages 17&18)
To lower the volume to half level or turn the sound permanently off, proceed as
follows•
Obtain MAIN MENU by pressing the ENTER keypad
•
Press keypad No. 6 to make NEXT flash then ENTER
•
Press keypad No. 6 to make SECUR flash then ENTER
•
Press keypad No. 6 to make SYS flash then ENTER
•
Press ENTER repeatedly to get required option
•
Press ESC several times to return to normal display
•
ALARM LIGHT AND SOUND - STEPS TO TAKE
Alarms must not be ignored. Immediately investigate the causes and until it is
certain that the pool water is safe, do not use the pool. Seek professional help
from a qualified pool maintenance technician if it is not fully understood what
is happening.
•
Read the message on the screen. This will advise which chemical is out of the
normal range
•
Make a test of the pool water with a good quality test kit to check if the Chemigem
has the same readings
•
It is very important that the chemical reagents in the test kit are well within their
use-by date. If in doubt, take a fresh sample of pool water to a pool shop for an
independent test
•
If the Chlorine is too low, or the pH too high, check the drums of chemical to
determine whether they have run out
•
If the Chlorine is too high or the pH too low, switch off the one that is incorrect
and as an extra precaution, remove the tube from the drum and place it in a
bucket of water
Consult the Problem Solving section on pages 34 to 36 for suggestions on how to
deal with chemical excesses.
The valves must be fitted as near as possible to the tapping band (Refer to
diagram on page 13)
•
The valves must be screwed to a vertical surface above the top of the chemical
drums and no more than 750mm from the ground so that the pool pump may
easily raise the chemicals from the drums
To meet special needs, a Venturi system can be connected to the solenoid valves.
(Refer to page 12)
SOLENOID VALVE TUBING INSTALLATION
•
Connect a length of tubing between the centre nipple on the solenoid valve
base and the tapping band injector nozzle
•
Connect a length of tubing to the Chlorine in-line filter and lay it neatly to the
Chlorine drum (Refer to diagram on page 13)
•
Connect a length of tubing to the pool Acid in-line filter and lay it neatly to the
pool Acid drum (Refer to diagram on page 13)
Ensure that the tubing is absolutely clean and free from sand and dirt before fitting,
as particles may enter the valve and cause leakage.
Do not use any tubing other than that supplied. To do so may result in damage to the
Chemigem and negate the Warranty. If additional tubing is required for the installation
of the unit, it will be supplied at no cost.
CHEMICAL DRUMS INSTALLATION
Ensure the Chlorine and pool Acid are kept in visually different drums to avoid
wrong connection. Use colour or size differences, or both.
Refer to the cutaway diagram of chemical drum on page 13 for a presentation of the
following:
•
Position the Chlorine and Acid drums in a safe and secure location about 2 metres
from the Chemigem
•
Drill a 10mm hole in each of the screw-on drum caps (slightly larger than the
diameter of the tubing) to allow venting and to prevent the drum walls from being
sucked in as the chemicals are used
•
Pass each length of supplied tubing through the hole in the appropriate drum cap
•
Place the supplied sinkers onto the tubing and attach the appropriate drum filter
(Refer to page 7)
•
When placing the tubing into the drums, measure the tubing against the outside
of each drum so that the drum filter will be 10-15mm above the bottom of the
drum and then apply several turns of PVC tape at a point above the cap to prevent
the tubing from slipping further into the drum
•
Lower the drum filter and sinker into the drum and screw on the cap.
(Refer to pages 32&33) for Chlorine and pool Acid dilution details.
12
FITTING CHEMIGEM TO A HEATED POOL
If the pool heating system is controlled by a separate pool pump, there are no factors
that affect the installation of a Chemigem.
If the one pool pump is required to service both the pool heating system and the
Chemigem, the pool heating plumbing must be bypassed. This will necessitate
the installation of a Venturi system at an additional cost.(Refer to diagram on
page 16)
29
ALARMS
INDICATOR LIGHT AND SOUND
The safety warning sounds and alarm signals will not operate for the first 5 minutes.
THE NORMAL RANGE
FITTING CHEMIGEM BELOW POOL WATER SURFACE
LEVEL
The following instructions assume the installer has some knowledge of the operation of the
pool and the parts described. If the installer is not experienced in pool operation and
maintenance, contact the supplier of the Chemigem or a qualified pool maintenance technician
with any questions before attempting to carry out the steps described in this section.
The Chemigem must be installed within 3 metres of the tapping band and in an upright
position and attached to a solid vertical surface, preferably at eye level.
If it is impractical to install the unit at eye level because of site restrictions, install it at any
height above the solenoid valves that provides ease of access and operation. The solenoid
valves need to be above the height of the chemical drums.
When the pool pump and filter are fitted below the pool water surface level, the suction line
may be under positive pressure even with the pump running. In this case an isolating valve
must be fitted to enable the pump and filter to be serviced.
Fit the tapping band between the isolating valve and the pool pump and close the isolating
valve sufficiently to obtain the required suction so as to allow the unit to operate effectively.
The required suction range is negative 20kPa to negative 70 kPa when the pool pump
is running and the filter is clean.
Methods to obtain improved suction involve using venturi devices or orifice plates. Contact
the supplier of the Chemigem or a qualified pool maintenance technician for information on
these.
If the pool pump is more than one metre below the pool water surface it is essential to
fit Non Return Valves into the chemical supply tubing to prevent back-flow into the
chemical drums.
Failure to prevent the back-flow into the chemical drums would cause spillage from the
drums, which in turn may result in the two concentrated chemicals mixing together out of the
pool water and producing poisonous chlorine gas. In addition, there is the serious
possibility of personal injury from contact with the chemicals and breathing the fumes.
VENTURI SYSTEM
A venturi system is required for:
•
Special needs, such as fitting a Chemigem below the pool water surface level (Refer
above and to page 15)
•
Pools that are heated (Refer to pages 12&16)
Flowcontrol provides information on the installation procedure for a venturi system.
Flowcontrol provides the venturi system at an additional cost.
NEATENING UP
Finish the installation by taping all loose wires and tubing together and place off the
ground to prevent damage and possible electrical shorting.
When the pool pump is running the Chemigem shows a green light if the pool chemical
levels are within the normal range.
To ensure the unit is maintaining the pool water at the required levels, check the pool
water on a regular basis with a good quality test kit.
The unit operates to keep the activity of Chlorine in the pool at a level where microorganisms are killed in about 1 second. For this to happen both the Chlorine (ORP)
and pH must be kept within a fairly narrow band. (Refer to page 19)
OUTSIDE THE NORMAL RANGE
If the levels of chemicals move outside the optimum band the Chemigem will indicate
this in two ways.
•
It will sound an alarm (provided the alarm is switched on: (Refer to “Audible
Alarm” on page 30)
•
The red light will flash at one-second intervals
When the alarm is sounding and the red light is flashing the unit will also indicate on
the screen the reason for the alarm.
This booklet contains sections on what remedial action to take should the
warnings operate.
Pressing the HELP keypad will also provide immediate suggestions.
If the unit is indicating that the chemical levels are outside the normal range
do not use the pool for bathing unless the problem is resolved. Study the
Problem Solving guide on pages 34 to 36. Failure to take these safety
precautions when the unit is indicating it is outside normal ranges may be
dangerous, as outlined below: •· Low Chlorine means the water could be carrying live and dangerous germs
•
High Chlorine will bleach swimwear and may irritate sensitive skin
•
Low pH is acidic and may irritate eyes and skin
•
High pH makes the Chlorine less able to kill germs
28
13
SETTING “AUTOMATIC” POOL PUMP TIMES
Pump
Filter
To Pool
May be positioned to suit
owner but MUST be above
the solenoid valve height.
Chemigem DM52
From Pool
Multi-electrode (probe)
Tapping Band
Injector Nozzle
C hlorine
Sinker
Drum
Filter
Flow
In-Line Filters
Chlorine
Solenoid
valve pack
Acid
Tubing
Flow
INSTALLATION DIAGRAM
Mains
Power
A 24 hour clock is used
·
Select MAIN MENU by pressing ENTER (keypad No. 4)
·
Make the word CLOCK flash by pressing keypad No. 6
·
Select CLOCK by pressing keypad No. 4
·
The first two digits will be flashing. These are the hours that can be advanced by
one hour for each press of keypad No. 4
·
Move the flashing point to the right again using keypad No.6 and advance the
minutes to the correct time using keypad No. 4
·
Press ESC several times to return to normal display
Electrical
outlet
220/250 volts
TO SET THE CLOCK
Min 450 mm - Max 750 mm
Utilising the automatic pool pump timer provides an assured method of achieving a
regular circulation of pool water through the pool filter. Further, as the Chemigem
operates when the pool pump is running, the pool water will automatically remain
balanced.
Factory set times vary depending on State.
The electronic timer is purely a 24 hour device and ON TIMES cannot be greater in
value than OFF TIMES.
The timer can be programmed to operate at the most convenient times during the
day and can easily be changed to suit varying pool usage at different times of the
year
•
Pump timing is a function of the MAIN MENU that is accessed by pressing
keypad No. 4 labeled ENTER. Once the MAIN MENU is displayed on the screen,
follow these steps:
•
The word TIMER will be flashing and it must be selected from the menu by
pressing ENTER keypad No. 4.
•
The first timing program will be displayed with PROG 1 flashing. To select others
from the seven programmes available, press ENTER while PROG 1 is
flashing, to advance to programme 2, 3 etc.
•
The START and STOP times are shown as two pairs of digits. The first pair in
each case being hours, the second pair being minutes. The 24-hour clock is
used. To select the START TIME HOURS move the flashing symbol to the right
by pressing keypad No. 6. The HOURS digits will now be flashing. To increase
the HOURS press the ENTER keypad once for every hour the start time is to be
advanced. If advanced too far, keep advancing until the display is returned to
the required number
•
To select the START TIME MINUTES move the flashing symbol to the right
again, using keypad No. 6 as stated above and advance the minutes by 5
minutes for each press using the ENTER keypad
•
Set the STOP TIMES by moving the flashing symbol further to the right with
keypad No. 6. Select it by pressing ENTER, and advance the hours as before
with the ENTER keypad. Complete by setting stop time minutes if required. If
other start and stop times are required, select TIMER and then PROG 2 etc.
and program start and stop times as required
•
Press ESC keypad several times to return to normal display.
14
27
POOL PUMP TIMER
DRILLING TAPPING BAND HOLES
Th
mu is ax
is
st
be
ho
40mm or 50mm diameter
PVC pipe
riz
on
t al
SETTING THE INBUILT POOL PUMP TIMER
The Chemigem has its own inbuilt electronic timer to turn the pool pump on and off
as and when required.
If it is decided to turn off the automatic pool pump timer and use the manual switching
of the pool pump on a daily basis, this may result in unbalanced pool water that is not
safe for swimming. If necessary, obtain advice from a qualified pool maintenance
technician.
TO TURN OFF THE INBUILT POOL PUMP TIMER
It can be switched off as follows: •
Press the ENTER keypad No. 4 to display MAIN MENU
•
Select flashing word TIMER by pressing the ENTER keypad
•
Keeping in PROG 1 and using keypad No. 6, move the flashing symbol to the
right and advance all the numbers to zeros by pressing ENTER as many times
as required
•
Return to normal display by pressing the ESC keypad several times
19mm diameter hole saw
TAPPING BAND AND MULTI-ELECTRODE (PROBE)
IF THE INBUILT POOL PUMP TIMER IS DISABLED
If the in-built timer is disabled, the Chemigem will lose the ability to turn the pool
pump on manually with the “PUMP” keypad. To turn the pool pump and the Chemigem
on or off manually, it will be necessary to use the mains power switch.
To reinstate the inbuilt pool pump timer set “AUTOMATIC” PUMP TIMES (Refer to
page 28)
MANUAL STARTING OF THE INBUILT POOL PUMP TIMER
It is likely that the pool water balance will fluctuate during any period when the pool
pump is manually started and stopped, for it may be that the pool pump will not be
running on a regular basis for the required times.
During this period it is strongly advisable to regularly check on the pool water
with a good quality test kit.
To turn the Chemigem on when the timers are already programmed and functional,
but when it is not in a pumping cycle, press the keypad marked PUMP (keypad
No.1). The first press will bring the pool pump and the unit on for one hour.
Manual “ON-TIMES” is switched off by pressing the pump keypad once (goes to
“MANUAL OFF”) or twice (goes to “AUTO”).
Should a manual “ON-TIME” longer than 1 hour be required, proceed as follows: •
Press keypad No. 1 a few times until the screen message states that the pump
is operating under “AUTOMATIC TIMER”
•
Press once more and hold down continuously (keypad No.1) until the required
“ON-TIME” in hours is displayed on the screen.
The Chemigem will then operate for that number of hours and when all manually set
times have expired the unit will automatically return to “AUTOMATIC TIMER” to
switch on and off the pool pump.
26
MANUAL DOSING OVERRIDE
If as a result of a pool water test it is determined that the Chlorine and/or pH are not
within acceptable levels, the Chemigem can perform a manual dosing operation to
rapidly add Chlorine and pool Acid.
Keypads No’d 5 and 6 carry out this function. Normally it will only be necessary to
have to dose one of the chemicals in this fashion but if for any reason both of these
keypads are pressed at once, only the pH will operate.
As soon as the manual-feed keypad is pressed the main screen will appear blank for
2 seconds after which it will display which feed is taking place. Feeding will continue
for about 20 seconds, while the keypad is pressed. When the display panel returns
to normal, the dosing stops. Press again to repeat as many times as required.
(Refer to page 23)
15
FITTING CHEMIGEM
BELOW POOL WATER SURFACE LEVEL
Power
Point
DM52 controller
RE-CALIBRATING pH
Return
Solenoid
valve pack
Valve to
produce
suction
Chlorine
Acid
Flow
Filters
Pump
Probe
The Chemigem has been equipped with a quick procedure to re-calibrate pH values.
If for any reason the factory-settings are not the required levels, the unit can be recalibrated.
Do not re-calibrate until identical pH readings have been obtained from at least
three test kit results from around the pool.
Steps to take once an accurate value of the pool pH has been obtained: •
Obtain MAIN MENU by pressing the ENTER keypad
•
Press keypad No. 6 to make “NEXT” flash, then press ENTER again
•
With “CALIB” flashing press ENTER again
•
Enter the value of the pool pH by pressing keypads No’d 7 or 8 to obtain the
correct value
•
To activate this new value press both HELP and ENTER keypads together
(keypads No’d 3 and 4)
Instructions similar to above will appear on the screen and will scroll after 5 seconds.
Skimmer box
RE-CALIBRATING CHLORINE
Recalibrating Chlorine(ORP)is not needed and it should not be actioned without the
prior advice of Flowcontrol.
Probe & injection point
(tapping band)
From bottom drain
Injection
point
Probe
16
25
EMPTYING SWIMMING POOL AND FREEZING CONDITIONS
If the pool water is emptied from the swimming pool, pool pump, pool filter and
associated pool piping for any reason (such as when the pool is being serviced)
• During periods of freezing conditions (below 32 degrees fahrenheit or zero degrees
celsius)
It is essential to remove the multi-electrode (probe) and to cover the sensing
end of the multi-electrode (probe) with the white protective cap that is provided
(refer to pages 10 and 14) and to temporarily seal the resultant exposed hole in
the tapping band (to avoid water seepage or sand and dirt entering the pool
piping).
Failure to carry out these functions may damage the multi-electrode (probe) and
negate the Warranty.
Refer to page 10 for the re-installation of the multi-electrode (probe).
Contact the supplier of the Chemigem or a qualified pool maintenance technician if
assistance is required for the removal and re-installation procedures.
Venturi Injector
Drum
Filter
To Turn Off the Chlorine
Press and hold down the keypads No’d 9 and 0 at the same time for 3 seconds.
While doing so the display will show “TO DISABLE CHLORINE HOLD FOR 3 SEC”
and at the end of the 3 seconds it will display “CHLORINE OFF”.
To Turn On the Chlorine
Press and hold down keypads No’d 9 and 0 at the same time for 3 seconds, after
which time the unit will beep and resume displaying the set and actual values for the
Chlorine (ORP) of the pool.
Injector nozzle blocked off
or hole drilled through only
one side of pipe
C hlorine
Sinker
From Pool
Multi-electrode (probe)
Tapping Band
Pump
In-Line Filters
Chlorine
Do not turn off either the Chlorine or pool Acid supply without advice from a qualified
pool maintenance technician or the supplier of the Chemigem.
Turning off the supply of either of the chemicals is not normally necessary and could
lead to unbalanced pool water that may not be safe for swimming.
In the event that it is necessary to turn off (disable) the Chlorine or pH function, the
Chemigem has an easy means of doing this:
Flow
Tubing
3 way valve
Filter
TURNING ON AND OFF THE CHLORINE AND POOL ACID
Acid
Three pin plug
Chlorine and Acid injection line
Solenoid
va lvepack
Mains
Power
Chemigem DM52
May be positioned to suit
owner but MUST be above
the solenoid valve height.
Electrical
outlet
220/250 volts
FITTING CHEMIGEM WHEN HEATER IS IN CIRCULATION,
USING VENTURI INJECTOR DEVICE
POOL
HEATER
•
To Turn Off the Pool Acid (pH)
Press and hold down the keypads No’d 7 and 8 at the same time for 3 seconds.
While doing so the display will show “TO DISABLE pH HOLD FOR 3 SEC” and at
the end of the 3 seconds it will display “pH OFF”.
To Turn On the Pool Acid (pH)
Press and hold down keypads No’d 7 and 8 at the same time for 3 seconds, after
which time the unit will beep and resume displaying the set and actual values for the
pH of the pool.
24
KEYPADS No’d 7 and 8:
“AUTOMATICALLY INCREASE AND DECREASE POOL ACID
SET LEVELS”
Keypads No’d 7 and 8 are used to set the level of pH required in the pool water. The
keypads raise or lower the required level and the unit will then acquire and hold the
set level.
If the pH level required is lowered using keypad 7 the unit will achieve the new
level quickly by adding some pool Acid.
However if the pH level required is raised using keypad 8, the unit cannot
make the changes rapidly. (If Chlorine is added to the pool water during the next
few weeks it will slowly raise the pH of the pool water)
These two keypads are also used together to turn the pH function on and off.
To manually turn off the pH and to turn it on again, (Refer to page 25)
KEYPADS No’d 9 and 0:
“AUTOMATICALLY INCREASE AND DECREASE CHLORINE
SET LEVELS”
Keypads No’d 9 and 0 are used to set the level of Chlorine required in the pool water.
The keypads raise or lower the required level and the Chemigem will then acquire
and hold the set level.
If the Chlorine level required is to be lowered, keypad 9 will lower the set level. It may
take some days or even weeks before the Chlorine level drops to the required setting.
However if the Chlorine level is to be raised, press keypad 0. The unit will feed
Chlorine every 3 minutes until the set level is reached.
To manually turn off the Chlorine and to turn it on again, (Refer to page 25)
17
OPERATION
INTRODUCTION
The Chemigem is designed for use with all types of pools and to measure and automatically
adjust the Chlorine and pH levels in the pool water.
Once levels are finally set or adjusted, the unit should be left alone.
The unit has been factory-set to achieve 650 millivolts Chlorine (ORP) and 7.7pH .
It has been found that if ORP is maintained at 650 millivolts, the kill time of E-coli type
bacteria is about one second.
If the ORP is lowered to 550 millivolts, the same organisms could take up to 2 hours to be
eliminated.
If the unit is used with these factory-set points as the selected levels, it should obtain
approximately 2-4 ppm Chlorine and 7.7 pH, providing the stabilizer level is at 50 ppm. If the
stabiliser level is 30 ppm or less, the Chlorine will be around 1 ppm.
READING THE DISPLAY PANEL
600
SET
650
7.2
SET
7.7
CHLORINE
(ORP)
pH
What do the Chlorine and pH Numbers Represent?
·
·
The Chlorine (ORP) number is the activity of the chlorine (see explanation of
ORP (Below) and measures in millivolts. (Refer to pages 19 and 31 to 33)
The pH number is the measure of acid / alkalinity and is displayed in units of the
pH scale.
What is ORP?
The Chemigem is designed to measure and automatically adjust Chlorine (ORP) and
pH levels in the pool water. (Refer above). As an explanation of what ORP is, the
following is provided:
For over 20 years operators in many parts of the world have used Oxidation-ReductionPotential (ORP or REDOX) values as a measure of Chlorine activity in water. ORP is
a measure of the oxidising properties of the Chlorine in the water and is easily monitored
by the Chemigem multi-electrode (probe).
When the multi-electrode (probe) is placed into water containing Chlorine it behaves
like an electric cell and creates a small but measurable electric voltage. This voltage is
proportional to the activity of Chlorine in the water.
It has been found that if ORP is maintained at 650 millivolts, the kill time of E-coli type
bacteria is about one second. If the ORP is lowered to 550 millivolts, the same organisms
could take up to 2 hours to be eliminated.
The test kit will measure Chlorine as parts per million (ppm) but the activity level of the
18
23
Chlorine (and therefore the kill-time) depends upon the other materials dissolved in
the pool water.
For an ORP controller to work properly the pH, Total Dissolved Solids (TDS),
stabiliser (iso cyanuric acid) and calcium hardness must be maintained within
the recommended levels given on pages 19&31.
Left Hand Side of Display Screen
The numbers on the left hand side of the display screen are the values the multielectrode (probe) is registering for the actual levels of Chlorine and pH within the
pool water.
The Chemigem will work to achieve the same values as those “SET” on the righthand end of the display.
Right Hand Side of Display Screen
The numbers on the right-hand side of the display screen are the values “SET”.
The unit has been factory-set to achieve 650 millivolts Chlorine (ORP) and 7.7pH as
the preferred levels for Chlorine and pH respectively.
These settings may be raised or lowered using the keypads No’d. 7 and 8 for pH and
9 and 0 for Chlorine (ORP) to the right of the display screen.
Password
The Chemigem is protected by a password No.
549
The number will only be required when operating any of the function changing
keypads if the programme has been activated.
Alternative Display
The Chemigem is able to display the operation in pictorial form if preferred. To
change to this form of display or to change back again, carry out the following steps:
With the unit running, obtain MAIN MENU by pressing keypad No. 4.
•
Press keypad No. 6 to move the flashing symbol over to NEXT
•
Press keypad No. 4
•
Press keypad No. 6 again to make DISP flash
•
Press keypad No. 4 once more
KEYPAD No. 4:
“ENTER”
The main feature of the keypad is to obtain the menu items and to select those that
are made to flash.
•
Pressing this keypad brings the “MAIN MENU” items on to the screen
•
It will select any word that is flashing on the screen. To change the word that is
flashing, use the keypads No’d 5 or 6, then press keypad No. 4 again to select it.
It also advances the digits when setting the clock and timer
When adjusting times in the “CLOCK” or “TIMER” functions, each press of the
ENTER keypad advances the number which is flashing, by one digit. (Refer to pages
27 and 28)
KEYPAD No. 5:
“CHLORINE MANUAL FEED”
If as a result of a pool water test it is determined that the Chlorine is not within
acceptable levels, the Chemigem can perform a manual dosing operation to bring
the level up rapidly.
The unit is equipped with the facility to override its normal operation and to dose
Chlorine manually. Keypad No. 5 performs this function.
Refer also to keypad No.6 that manually feeds pool Acid (pH)
Normally it will only be necessary to manually dose either Chlorine or pH, however if
for any reason keyboards No’d. 5 and 6 are both pressed at once, only the pH will
operate.
As soon as the manual-feed keypad is pressed the main screen will appear blank for
2 seconds after which it will display which feed is taking place.
Feeding will continue for about 20 seconds, while the keypad is pressed.
When the display panel returns to normal the dosing stops.
Press again to repeat as many times as required.
After manually dosing with Chlorine, monitor the setting for several hours afterwards
to make sure that the recommended levels have been restored.
KEYPAD No. 6:
“POOL ACID MANUAL FEED”
If as a result of a pool water test it is determined that the Pool Acid (pH) is not within
acceptable levels, the Chemigem can perform a manual dosing operation to lower
the level rapidly.
The unit is equipped with the facility to override its normal operation and to dose
pool Acid manually.
Refer also to keypad No. 5 that manually feeds Chlorine.
Normally it will only be necessary to manually dose either Chlorine or pool Acid,
however if for any reason keypads No’d 5 and 6 are both pressed at once, only the
pool Acid will operate.
As soon as the manual-feed keypad is pressed the main screen will appear blank for
2 seconds after which it will display which feed is taking place.
Feeding will continue for about 20 seconds, while the keypad is pressed.
22
KEYPADS
KEYPAD No. 1:
“PUMP”
When the power has been switched on the screen will light up, however the pool
pump will not operate unless the time is within a “PUMP-ON” period.
This keypad controls the operation of the pool pump and the controlling function of
the unit. It has three positions and scrolls through them with each press on the
keypad.
•
The first press will move the pump status from “AUTO” to “ON” and the pool
pump will then run for one hour. The screen will show a message to confirm this
•
Pressing the keypad again will move the pump status to “OFF” and the screen
will confirm this
•
With a third press the pump status will return to “AUTO” and the timer will then
switch the pump on and off according to the times set
Dosing of chemicals will only commence after a few minutes to allow for adequate
mixing and accurate monitoring. Similarly the safety warning sounds and alarm signals
will not operate for the first 5 minutes
Should a manual “ON-TIME” longer than 1 hour be required, proceed as follows:
•
Press “PUMP” keypad No. 1 a few times until the screen message states that
the pump is operating under “AUTOMATIC TIMER”
•
Press once more and hold down continuously keypad No. 1 until the required
“ON-TIME” in hours is displayed on the screen
The unit will then operate for that number of hours and when all manually set times
have expired the unit will automatically return to “AUTOMATIC TIMER” to switch on
and off the pool pump.
If the Chemigem inbuilt pool pump timer is disabled by the pool operator, the unit will
lose the ability to turn the pool pump on manually with the “PUMP” keypad. To turn
the pool pump on or off manually when the timer has been disabled, use the mains
power switch.
To reinstate the inbuilt timer, set “Automatic Pump Times” (Refer to page 28)
KEYPAD No. 2:
“ESCAPE” AND “ALARM MUTE”
The keypad has three functions: •
When the setup of the Chemigem is completed or required changes made,
pressing the ESC keypad will return to normal display.
•
When alarms are sounding it can be pressed to mute the warning tone. The
warning tone will be restored when the unit next switches on. (Refer to page
30). The flashing red light remains on until the pool chemistry returns to the
preset levels
•
Removes lock-out associated with high pH alarm( Refer to page 35)
KEYPAD No. 3:
“HELP”
When the Chemigem is indicating that the chemical levels in the pool water are
incorrect, helpful advice is obtained by pressing this keypad. Suggestions and guides
are given.
Reference to the relevant pages in this manual provide a more in-depth treatment of
the problems.
19
BEFORE STARTING THE CHEMIGEM
Before switching on the Chemigem carry out a full water test with a good quality
test kit and balance the pool water to the levels shown below.
If the pool water is not balanced when the unit is first turned on, the unit may
fail to correctly control the pool water.
Calcium Hardness, Total Alkalinity and pH should be adjusted first, followed
by Chlorine and then Stabiliser (lso-cyanuric acid).
Initial set up by the pool builder often includes the addition of the first amounts of
chemicals. These may be estimated amounts and may require adjustment.
•
Adding chemicals will take only a few minutes but removing the chemicals
depends upon the natural dissipation from the pool, which could take weeks
•
pH is lowered by the addition of acid
•
Do not overdose the pool with Chlorine, pool Acid or Stabiliser
•
Always add the various pool chemicals slowly and with care, allowing sufficient
time for complete dissolving and mixing throughout the pool water
•
Finally, carry out careful water tests to determine whether the correct amounts
have been added
If unsure how to carry out a water test and/or initially balance the pool water, request
a qualified pool maintenance technician to do this for you.
It is suggested that swimming pool water should be maintained within the following
ranges and that these ranges are confirmed with your local authorities as meeting
their standards:
•
CHLORINE
1.0 to
3.0 ppm or
3.0 mg/l
•
pH
7.2 to
7.8
•
CALCIUM HARDNESS
90
to 300 ppm or 300 mg/l
•
STABILISER
30
to 50 ppm or 50 mg/l
•
TOTAL ALKALINITY
80
to 300 ppm or 300 mg/l
•
TOTAL DlSSOLVED SOLlDS (TDS) 300
to 1500 ppm or1500 mg/l
Pay particular attention to the instructions on the chemical drums. Add each chemical
separately and slowly allowing plenty of time for them to dissolve. Always test between
additions with a good quality test kit.
When diluting chemicals always add the concentrated chemical substance to the
water and never add the water to the concentrated chemical. Some chemicals react
violently with water and can splash into the face and eyes. Always wear a protective
face shield and gloves for such operations.
After the pool water has been correctly balanced and the unit is switched on, it will
measure and automatically adjust the Chlorine and pH levels. Chlorine and pool
Acid will feed separately for a few seconds approximately every 3 minutes until the
required levels are reached - depending on how the unit has been programmed.
20
ELECTRONIC CLOCK
The Chemigem has an in-built electronic clock with a battery back up (which should
last for several years) that controls the automatic switching on and off of the pool
pump.(Refer to page 28)
DOSING OF CHEMICALS
Dosing of chemicals will only commence after a few minutes to allow for adequate
mixing and accurate sensing. Similarly the safety warning sounds and alarm signals
will not operate for the first 5 minutes.
Every 3 minutes Chlorine will feed for 8 seconds and then pool Acid will feed separately
for 7 seconds, until the required chemical levels are reached - depending on how the
unit has been programmed (Refer to page 18)
Depending upon how the unit has been programmed, the standard procedure is that
the first time that the unit operates it will take approximately 120 minutes to fully
adjust to the required levels of Chlorine and pH. Thereafter it will normally restore
the required levels in approximately 30 minutes.
Ensure that the pool pump is running for a sufficient period to carry out these
adjustments.
THE FIRST TWO WEEKS
The day following the installation of the Chemigem and after the pool pump has been
running for 30 minutes, check the level of Chlorine and pH with a good quality test kit.
If either of the levels is not exactly at the levels required, alter the settings a little. The
unit will bring about the changes to the chemistry of the pool water as the pool pump
circulates the water.
During the two weeks after a pool is first filled, the water chemistry will be settling
down. It is likely that chemical levels will fluctuate during this time, so keep a check on
the pool water with a good quality test kit or obtain confirmation by seeking help from
a qualified pool maintenance technician.
It is not uncommon for new plaster/marblesheen pools to use more acid during their
first month or two but do not let the pH and Total Alkalinity remain below recommended
levels, or the lifetime of the pool surface may be shortened.
Depending upon how the unit has been programmed, the standard procedure is that
the first time that the unit operates it will take approximately 120 minutes to fully adjust
to the required levels of Chlorine and pH. Thereafter it will normally restore the required
levels in approximately 30 minutes.
Ensure that the pool pump is running for a sufficient period to carry out these
adjustments.
21
If the actual chemical levels being achieved by the unit are not closely matching the
“SET” levels, make minor adjustments (either up or down as the circumstances warrant)
to the “SET” levels and re-test after 24 hours.
Additions by the unit are made in minutes, but removing excess chemicals may be
difficult and require weeks.
Do not go outside the ranges given on pages 17 and 19 and pay attention to any
specific requirements given by the pool builder.
Always take samples at a point near the skimmer box, for this is where the water is
completely mixed giving the most accurate readings, never near the pool returns
(eyeballs) where the water may have been freshly dosed by the unit.
Always follow the specific requirements of the pool builder when setting the chemical
levels for the pool.
REGULAR CHECKS ON THE QUALITY OF POOL WATER
As a precautionary measure to ensure that the desired pool water chemical levels are
being maintained and that the Chemigem is functioning correctly, regularly check the
pool water quality with a good quality test kit.
If the pool is heavily used (such as in hot weather) it must be checked more frequently.
As a general guide it is recommended that the check should be made at least twice
weekly in the swimming season and once each two weeks in the non-swimming period.
Seek guidance from your local authority or qualified pool maintenance technician.
REGULAR CHECKS OF THE SOLENOID VALVE TUBING
Regularly check the solenoid valve tubing to ensure that it has not become brittle.
If the solenoid valve tubing becomes brittle, it must be replaced immediately.
Download PDF