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INSTALLATION
Chlorinators - Liquid & Controllers

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ROLA CHEM LIQUID CHLORINATORS - INSTALLATION



General Instructions (All Models)

1. Pre-Installation:

Before installing the unit in position on the wall or post, the length of the PVC tubing provided should be measured and taken into consideration.

Please ensure that no other equipment or chemical drums (containing chlorine or acid) are kept directly below the Rola Chem unit. Chemical fumes can corrode machine parts.

When installed outdoors, make sure that the unit is in a weatherproof enclosure.
To avoid loss of water from the system, close all stop valves before cutting any lines.

2. Installing the "T" piece (in pools without in-floor Cleaning Systems):
Install the "T" piece into the return-to-pool line.
Cut an appropriate piece out of this line and glue the "T" piece in position, using a suitable type "P" PVC solvent cement.

IMPORTANT: ROLA CHEM Pumps dose against a maximum pressure of 150-175kPa (20-25psi).
Avoid excessive pressure situations such as: -

1.
In-Floor Cleaners: The recommended position of the injection point and probe is on the suction line.

2. Reduced Bushing: If a reducing bushing or elbow is used (eg. 40mm in a 50mm pipe) install the injection point far away from the reducing bushing elbow. As a precautionary measure test the pressure with a pressure gauge just before installing the injection point. If space is a problem, install the injection point in the suction line.
This does not detract from the performance of the Rola Chem machine.

3. Connection to the PVC Tubing:
The PVC Tubing needs to be cut to the required lengths as follows:

1. Drill a 10mm hole in the cap of the chlorine container. If using a 60 litre drum,
the hole should be drilled in the shoulder. The container should not be airtight
(air must enter the container) or the liquid will not flow through the supply
tube.

2. Thread the PVC tube through the hole in the cap or shoulder and fit the non-return or check valve and the weight. Ensure that the non-return valve is fitted
Correctly (arrow indicates the direction). Drop the weight, with the non-return valve into the bottom of the container. Measure the distance between the container and the Rola Chem unit, preferably in a straight line, and cut the PVC tube to length and push as far as possible onto the barb (black connector) protruding from the left side of the Rola Chem pump. Fix the tube onto the barb with the black clamp to prevent any air leaks. For acid, use the appropriate non-return valve provided., or else it will not allow the acid to be drawn up.

3. Measure and cut the remaining PVC tubing which goes between the machine
and the injection point. Push one end of this tubing, as far as possible, onto the
barb (black connector) protruding from the right side of the Rola Chem pump.
Fix the tube onto the barb with the black clamp. The other end should be threaded through the black injection point after it is screwed into the "T" piece. Push the PVC tubing through the injection point so that it protrudes approximately half way into the "T" piece. Do not push it further. Lock the tubing in place by hand tightening the locking nut, thus compressing the rubber grommet of the injection point. DO NOT OVERTIGHTEN. Tools should not be used to tighten this locking nut.

IMPORTANT: Ensure that the PVC tubing exiting from the chlorine or acid tank is connected to the left hand side of the squeeze (pump) tube as the chemical flow is clockwise.

TIP: Soaking the ends of the PVC tubing in hot water makes it easier to push onto the barb. When installing chemical containers (especially acid), in filter enclosures, which have no ventilation, it is recommended that the hole in the cap of the container is cut to fit tightly around the tubing, so that the fumes from the acid or chlorine will not corrode the equipment. It will be necessary to drill a second hole in the cap fitted tightly with a length of tubing which should then be vented outside the filter enclosure. This procedure is recommended only where the filter enclosure has no ventilation and is to protect the pool equipment.

4. Plug the Rola Chem unit into the power source and the filter pump power lead into the Rola Chem plug, so that both the filter pump and the Rola Chem operate as one. Switch on the power supply.

MODEL RC25-1
Select the "Full" setting on the control dial. The chlorinator will commence to rotate, drawing the chemical from the container. When the chemical begins to drop down the PVC tubing on the right side of the unit, reset the dial to the desired level.

RECOMMENDED DIAL SETTING FOR A DOMESTIC POOL SIZE 60000 LITRES
No. 1-2 ON A 8 HOUR FILTER CYCLE

Test the pool for the first 7 days. If the correct chlorine level is maintained, no other adjustments are required. However, during heavy bathing periods and excessive rain, further adjustment may be necessary. The higher the number on the dial, the more chlorine will be injected into the pool.

IN WINTER, IF THE RUNNING TIME OF THE FILTER IS NOT REDUCED, A LOWER SETTING WILL BE REQUIRED.



MODEL RC25-2 ADDITIONAL INSTRUCTIONS
This model is installed in the same way as the RC25-1. The additional installations are as follows: -

FITTING THE PROBE OR SENSOR: 'T' piece has been drilled with 2 holes for the probe and the injection point. The probe must be screwed into a HORIZONTAL POSITION.

Plug the BNC connector into the probe socket on the face of the RC25-2 with a push and twist action. After switching on the power, the LED indicator (red light) will flash for some seconds, the remain steady. (The LED indicator may move around when the probe lead or the BNC connector is touched, this is normal.

IMPORTANT: DO NOT OVERTIGHTEN
PROBE SHOULD NOT BE FITTED IN A VERTICAL OR UPSIDE DOWN POSITION.

Set the control dial to the 12 o'clock position. This setting corresponds to the desired ORP (Chlorine) level for the average domestic pool (equals app. 1.5ppm of chlorine), provided the pool chemistry (i.e. pH, Alkalinity, TDS, etc.) is correct. The LED would read 3-4 bars (approximate) from the top of the scale if the chlorine activity is at the correct level. The LED can show 2 bars illuminated on occasions. This is normal.

IMPORTANT: Maintain the correct pH (between 7.4-7.6, lower for some pools). As conditions vary from pool to pool, test the pool for the next 7 days and adjust the control dial very slightly to achieve the required OPR/Redox (chlorine activity level). This may mean that the control dial is set higher or lower than the recommended position (12 o'clock) and the LED light is correspondingly higher or lower.

HOW THE PROBE FUNCTIONS
The probe measures the ORP or Redox, which is the latest standard for measuring the activity of sanitisers in swimming pools or spas. His is a more accurate method (it ensures that all the bacteria will be killed in the shortest possible time) than free chlorine readings as measured by standard test kits.

To maintain the correct pH level is essential. If the pH is above 7.8, the activity of chlorine can be reduced by as much as 80%. This will give a low reading on the LED and the RC25-2 will pump in more chlorine, even if the chlorine level in the pool is high to compensate for low activity resulting in excess chlorine usage. If the pH is below 7, the opposite will occur.

Please note that the RC25-2 does not run on a continuous basis, but on a cyclic ON/OFF timing.
The RC25-2 (and RC25-5) can save 25% or more on chemical costs, as these only dispense chemical as and when required. In winter and during low bathing loads, you will discover that chlorine usage is much less, but the pool water remains in excellent condition.

MODEL RC25-5 ADDITIONAL INSTRUCTIONS
The basic installation and maintenance is the same as the RC25-1 and RC25-2.
Additional information for the RC25-5 is as follows:

IMPORTANT: ALWAYS INSTALL THE PROBE IN A HORIZONTAL POSITION, NOT VERTICAL OR UPSIDE DOWN

1. Two "T" pieces are provided with the kit. One has the injection point for the acid and the other has the dual holes (injection point and the opening for the probe) for chlorine. This should be fitted in the return-to-pool line after the filter and heater. If an in-floor cleaning system is fitted, the injection "T" piece, as well as the probe, should be fitted in the suction line, as there is excessive pressure in the return line.
2. The "T" piece with the acid injection must be upstream before the chlorine injection and probe (the second "T" piece).
3. The chlorine side is fully automatic (see information under RC25-2)

The pH is controlled on the acid side, with the turn of the dial. The higher the number dialled, the more acid is added and the pH becomes lower.

RECOMMENDED DIAL SETTING FOR THE ACID SIDE
FOR A 60000 LITRE POOL IS NO. 1 ON A 8HOUR FILTER CYCLE

Test the pool daily for the first 7 days, adjusting as necessary, until the correct setting is achieved.

NOTE: ACID SHOULD BE DILUTED
ADD 1 PART ACID TO 2 PARTS WATER APPROXIMATELY
NEVER MIX CHEMICALS

For any further information on Chlorinators please contact us.

 



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