Rainbow Pool Products CHEMIGEM DM52 Manual Download

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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.

Tapping Band

The tapping band is inserted into the PVC pipe on the inlet (suction) side of the pool pump.

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.

Coil of Plastic Tubing

The plastic tubing is connected from the solenoid valves to the chemical drums and the

tapping band.

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. 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.

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.

RAINBOW

POOL

PRODUCTS

PTY

LTD

Summary of Contents for CHEMIGEM DM52

Page 1: ... Y L T D CHEMIGEM DM52 WITH PUMPS Code Description 1 Year Warranty 00052005 Chlorine and pH controller suitable for most pools with built in pool circulation pump timer Supplied with 12V peristaltic pumps having a pressure limitation of 40 kPa ...

Page 2: ... effectiveness of the chlorine is no longer a guess it is a measured pool water quality parameter that you the user are able to set LIKE AN INDUSTURIAL PROCESS CONTROLLER FOR YOUR POOL Chemigem uses an advanced FLASH based processor with proprietary algorithms to watch over your pool and filtration system functions There is a versatile control system for operating and programming The LCD display s...

Page 3: ...OINTS 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 lo...

Page 4: ...cals 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 war...

Page 5: ... to your local time To set the clock Refer to page 23 Pool Pump Times The factory set pool pump times are on page 23 To change pumping times or to turn the timer off Refer to pages 22 23 Pool Water Circulation 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...

Page 6: ...trode 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 in...

Page 7: ...ge 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 desc...

Page 8: ...alse 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 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 ...

Page 9: ...ides 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...

Page 10: ... connection Use colour or size differences or both Refer to the cutaway diagram of chemical drum on page 12 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 bein...

Page 11: ...n 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...

Page 12: ...INSTALLATION DIAGRAM R A I N B O W P O O L P R O D U C T S P T Y L T D ...

Page 13: ...DRILLING TAPPING BAND HOLES TAPPING BAND AND MULTI ELECTRODE PROBE R A I N B O W P O O L P R O D U C T S P T Y L T D ...

Page 14: ...FITTING CHEMIGEM BELOW POOL WATER SURFACE LEVEL FITTING R A I N B O W P O O L P R O D U C T S P T Y L T D ...

Page 15: ...CHEMIGEM WHEN HEATER IS IN CIRCULATION USING VENTURI INJECTOR DEVICE R A I N B O W P O O L P R O D U C T S P T Y L T D ...

Page 16: ... 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 Reduction Potential ORP or REDOX values as a measure of Chlorine activity in water ORP is a measure of the oxidising properties of the Chlorine in ...

Page 17: ...bol over to NEXT Press keypad No 4 Press keypad No 6 again to make DISP flash Press keypad No 4 once more 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 C...

Page 18: ... on and off of the pool pump 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 reach...

Page 19: ...uirements 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 O...

Page 20: ... 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...

Page 21: ...ill only be necessary to manually dose either Chlorine or pH however if for any reason keyboards No 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 ...

Page 22: ...rom 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 and to temporarily seal the...

Page 23: ...e 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 RE CALIBRATING pH The Chemigem has been equipped with a quick procedure to re calibrate ...

Page 24: ... 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 23 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 t...

Page 25: ...he 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...

Page 26: ...m is switched on Refer to Audible Alarm on page 25 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 indic...

Page 27: ...peatedly 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...

Page 28: ... 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 co...

Page 29: ...lly 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...

Page 30: ...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 d...

Page 31: ...iod 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 30 HIGH CHLORINE ALARM This indicates that th...

Page 32: ...idden 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...

Page 33: ...R A I N B O W P O O L P R O D U C T S P T Y L T D ...

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