Rexener Hot Tub Mass Filter Instruction Manual

INSTALLATION AND MAINTENANCE
MANUAL
REXENER
Mass Filte

MASS FILTER INSTRUCTIONS

The manual can be downloaded as a PDF file from the website: www.rexnordic.uk
Read this manual carefully and keep it in a safe place for future reference.
This manual covers the filtration unit that is described (name and reference) in the attached document “TECHNICAL CARACTERISTICS”.
All electrical installations should comply with the following standard

European Low Voltage Directive 2014/35/CE.
EN 60335-2-41, safety of household or similar electrical appliances, particular requirements for pumps

The installation must therefore comply with all rules pertaining to “the construction of electrical installations within specific confines: swimming pools and fountains, or the  equivalent standard in force in each region or country. The electrical installation should be done by someone qualified in working with electrical equipment. This unit is not designed for anyone with a physical, sensory or mental handicap or people lacking in experience, unless done under supervision or with instructions of use from a person in charge of safety.

• The height of the sand should not exceed 2/3 of the height of the tank.
• It is important to check that the suction ports are not blocked.
• Check the level of dirt in the filter regularly.
• The unit must not be switched on while the pool is being used.
• Do not operate the unit unless it is properly primed.
• NEVER touch the filter when it is operating if you are wet or have wet hands.
• When handling the filter or valve, DISCONNECT the power supply.
• Make sure that the ground is dry before touching the electrical equipment.
• Do not submerge the or put it in a place where it could be submerged.
• Do not permit children or adults to sit or lean on the unit. Children should be supervised to ensure that they do no play with the unit.
• If the power cord is damaged, it must be replaced by the manufacturer or an approved service engineer or a similarly qualified person in order to avoid hazards.
• It is essential that any damaged component or set of component is changed as soon as possible. Only use parts that are approved by the sales representative.
• The unit should be connected to a power supply (see data on the pump’s plate), with an earth connection, protected by a residual current device (RCD) with a rated residual operating current that does not exceed 30 mA. or by an insulating transformer.
• Forbid access to the pool if any damage of the filtration system(s) occurs.
• Whenever chemical products are used to treat the pool water, it is recommended that the minimum filtration time is respected in order to protect bathers’ health, as stated  by the health regulations

PACKAGING COMPONENTS

This unit is designed for above-ground pools

REQUIREMENTS FOR PROPER INSTALLATION
This unit can be assembled by an adult in 2 hours. Follow the instructions in this manual step-by-step. Before installation, have the following tools close at hand

*Some models include funne

BEFORE CONNECTING THE FILTER

2.1. LOCATION
Place the filter on a flat, solid surface at a minimum distance of 3.5 meters from the pool (in accordance with standard installation regulations of electrical appliances in swimming pools in force in each region or country) at the same level as the bottom of the pool to prevent air from entering the cleaning circuit and to ensure that the filter remains primed. The filter should be protected from the sun and rain, and kept in a sufficiently ventilated area during operation. Never cover it during operation.
Installation should be carried out using hoses of a maximum length of 4.5 meters that enable the filter unit to be placed on a flat, solid surface at least 3.5 meters away from the pool. Should the hoses be too short, contact your service engineer. It is important to check that the suction ports are not blocked. During the installation process, if in doubt, contact the vendor of the unit.

2.2. ASSEMBLY
Once the unit is in place, proceed as follows: (See pages 10 to 14).

1. Attach filter to the mass filter according to model (Ø300-Pag. 10-14). Fix the pump to the base with the screws and washers supplied.

2. Place the inner collector correctly on the bottom of the filter.
   • Cover the mouth of the collector situated on the inside of the filter with a plastic protector to make sure sand does not enter (Fig.3).
   • Put the sand inside the filter: the height of the sand should not exceed 2/3 of the height of the tank (Fig.3).
   • Remove the remains of sand from the filter opening and take off the protective plastic.

3. Put the selector valve with its coupling in place and secure with the metal band or seal (Fig.4).
   • Firmly tighten the screw on the metal band that joins the valve to the filter (Fig.4).

4. Pressure gage assembly.

5. Connect the (PUMP) and (RETURN) terminals of the selector valve to the corresponding hoses, tightening them firmly with the clamps. (Fig.6)

NOTE: Check that the hoses allow the filtration unit to be located and fixed on a flat, solid surface that is more than 3.5 metres from the pool.

TOP SELECTOR VALVE

VALVE TYPES AND FUNCTIONING
A 5-way valve: The selector valve on top of the filter is used to select the 5 different filter modes: filtration, backwashing, rining, draining and closed.
B 6-way valve: This valve has the same mode as the 5-way valve plus a recirculation mode.
To vary the position of the valve, proceed as follows:

• Disconnect the unit from the mains.
• Firmly press the lever on top of the valve whilst loosening the front rib until it can be turned.
• Gently turn the lever until the front rib is aligned with the desired setting.
• Slowly release the lever ensuring that the front rib fits in place.

OPERATION

The operation of this filter is based on the filtration capacity of the silica sand that is inside. The water in the pool is driven by the filter pump and forced to pass through the  ilica sand. The sand acts as a filtering element that retains the impurities in the water. The environment, trees, pollen, insects and frequency of bathing, amongst other factors,  determine the dirtiness of the water in the pool. Depending on these factors, the silica sand in the filter should be cleaned with greater or less frequency (see section 5.3). Check  the level of dirt in the filter regularly.
To keep the pool water in good condition, use the chemical products recommended by the manufacturer (chlorine, algaecides, flocculants, etc.)

CHEMICAL PRODUCTS SHOULD NEVER BE PLACED IN THE SKIMMER BASKET OR FED THROUGH THE FILTER, AS THIS WOULD DETERIORATE THE MATERIALS OF THE UNIT AND LIMIT ITS EFFICIENCY

Whenever chemical products are used to treat the pool water, it is recommended that the minimum filtration time is respected in order to protect bathers ‘health, as stated by the health regulations.
4.1. PRIMING THE FILTER
The filter must be correctly primed at all times. If the filter is not primed, this means that an air chamber has been created inside that causes defective circulation of water. This  prevents proper filtration of the water by the silica sand and is detrimental to the motor.

The filter may become unprimed for several reasons:

• If a new unit is connected.
• If a unit is started up after an extended period of inactivity.
• Following the use of a suction pool cleaner.
• If air has been absorbed by the skimmer due to a low level of water in the pool.
• Due to incorrect use of the unit, suction cover or skimmer plug.

When is the filter unprimed?
We can see that the filter is unprimed when:

• The water entering the filter sounds like it is falling freely. This indicates that an air chamber has been created between the water inlet and the silica sand.
• An excess of air bubbles is released through the return nozzle.
• A pool cleaner (not supplied) does not operate with a suction system, and the silica sand remains clean after cleaning.
• How can the filter be primed?
• Verify that the suction hose is connected to the skimmer and the passage is clear (the plug is not in place).
• With the valve in the filter position, slightly loosen the drain nut that is beside the pressure gauge, so as to expel the air accumulated inside the filter.
• When you see that only water is released (for 1 to 2 minutes), re-tighten the nut

4.2. FILTRATION
NEVER HANDLE THE VALVE WHILE THE MOTOR IS RUNNING.
Backwash the sand before the first filtration. (Part 5.3)
The valve should be in the filter position (FILTER). The service life of the filter will be longer if the periods of continuous operation do not exceed 4 hours. The need for daily  filtration is determined by the volume of water in your pool in m3 in relation to the m3/h filter  flow rate for a water temperature of approximately 21ºC and placed 3.5 m from  the pool. Leave the motor at a standstill for at least 2 h  between each 4 h period of operation

In the initial filtration treatment it is important to leave the filter at a standstill for the periods indicated. It is recommended that you increase the amount of time in ratio to any  temperature rise in the pool.

4.3. FILTER BACKWASHING

The backwashing process cleans the silica sand inside the filter. This is achieved by reversing the direction of water circulation with the top selector valve. This process should be one regularly. For this purpose, you should observe several factors  that indicate the dirtiness of the sand:

• When a reduction in the return flow rate of over 30% of the system’s nominal flow rate is detected.
• When the manometer indicates excessive pressure (see the maximum working pressure given in the instruction manual included with the device)

To clean the filter, proceed as follows according to valve type:

• Disconnect the filter from the mains. Never move the selector valve while the motor is running.
• Firmly press the upper selector valve, displacing the front rib, until you can turn it.
• Turn the lever gently until the front rib is in line with the backwashing mode.
• Connect a hose to the valve waste outlet from the valve and direct the other end of the hose to a drain or sewer.
• Run the filter for approximately 2 minutes (until impurities no longer run out with the water).
• Stop the unit.
• Put the valve in the rinse position and connect the filter for a few seconds.
• Stop the unit, put it in the desired filter position and remove the hose from the waste position, if you so desire.

4.4 DRAINING THE POOL
The filter allows you to drain most of the pool water after the bathing season has ended. In order to do so, you should set the top selector valve on the drainage setting without  plugging in the filter and connect a hose to the valve waste outlet and direct the other end to the drain or sewer

THE HOSE SHOULD NOT CONTINUE TO APPLY SUCTION TO THE BOTTOM OF THE POOL LINER. THE PUMP MAY BE SERIOUSLY DAMAGED IF IT  OPERATES WITHOUT WATER CIRCULATION OR MAY DAMAGE THE LINER.
4.5. RINSING
Having completed a filter “BACKWASH” cycle and having put the unit on “FILTER”, mode for a few seconds, the water flowing into the pool will be cloudy. To avoid having cloudy water running into the pool, use the “RINSE” setting.
This works as follows: immediately after “BACKWASHING”, stop the pump, turn the valve to “RINSE” and connect the pump again for one minute, then stop the pump and turn the valve to “FILTER”.
4.6. RECIRCULATION (ONLY PERFORMED BY A 6-WAY VALVE)
With the valve in this position, the water goes directly from the pump to the pool, without passing through the filter.
4.7. CLOSED
The “CLOSED” position for the selector valve is used to prevent water from circulating through the hoses and the filter.

CABLE REPLACEMENT

If the power cable becomes damaged, it must be replaced by the manufacturer, your after-sales service engineer or a similarly
qualified person in order to avoid hazards.

MAINTENANCE

After the bathing season has ended, the filter should be kept in a dry place where it is protected from bad weather. After performing a final backwash to clean the silica sand,  dismantle the hoses and drain the water in the filter through the tank drain plug until it is completely empty.
After removing all of the water from the filter, carefully clean the remains of silica sand from the thread before replacing the plug. Failure to do so could damage the thread.
The filter tank drain plug should only be used in this operation

VERY IMPORTANT: Following an extended period of inactivity, before starting up the filter check that the filter is correctly primed

The unit is designed to work so that practically no maintenance is required. Some consumables or components subject to wear
and tear may have a shorter service live than the unit’s warranty period.

Contact your service engineer for any maintenance work that may be required.

TROUBLE-SHOOTING AND TECHNICAL ASSISTANCE

This filter and its instructions are especially designed for home use. There is no need for professional assistance, except in special cases. The following are some of the problems  and causes that may arise over time during the life- span of the filter, and which you may be able to fix on your own. For any enquiries on warranties or after-sales service, please  contact the vendor.
It is essential that any damaged component element or set of components is changed as soon as possible. Only use parts approved by the after-sales service. Forbid  access to  the pool if any damage of the filtration system(s) occurs.
When handling the filter or valve, DISCONNECT the power supply.

terminals are in the correct  position and have been tightened.
If the water loss continues, contact the pool manufacturer’s  after-sales service.
After the filter has started up, there is no flow in the return nozzle.| The valve is not in the “filter” setting.
The filter is above the level of the water and is unprimed.
The suction cover or the skimmer plug has been inserted.| Disconnect the filter and put the valve in the correct setting.
Place the filter in the correct position and prime it.
Remove the suction cover or the skimmer plug.
Intermittent operation.| Low water level in skimmer
The filter is not primed.| Fill the pool and prime the filter.
Prime the filter.
The flow rate of the filter is low.| Due to use, the filter is dirty.
The filter is not primed.| Perform a backwash.
Prime the filter.
Water comes out through the mouth of the filter.| The connection between the valve and the filter is dirty.
The metal band is loose.| Clean the sand from the opening. Insert the coupling on  the valve properly and tighten the metal band firmly.
The filter valve leaks through the drain terminal (DRAINAGE).| Damage of inner coupling due to incorrect use of chemical products.
Valve head broken due to incorrect use (over-tightening).| Change the top valve cover.
Do not put chemical products in the prefilter skimmer basket.
Change the valve head; do not over-tighten.
The motor does not start up. It makesno noise or vibration.| There is no current in the power line.| Make sure that there is current running the power line.
The motor does not start but a buzzing sound can be heard.| roblem with the motor.| Please contact the vendor.

Ø300 mm – Images of the products are exemplary.

2 – Ø300 mm

3 – Ø300 mm

4 – Ø300 mm

5 – Ø300 mm – Installing the pressure gauge![Rexener Hot Tub Mass Filter

• 5 Ø300 mm](https://manuals.plus/wp-content/uploads/2022/06/Rexener-Hot-Tub- Mass-Filter-5-O300-mm.png)

6 – Ø300 mm – Installing the pump hose

Figures

GUARANTEE CERTIFICATE

1. GENERAL TERMS
   1.1. In accordance with this provisions, the seller guarantees that the Rex Nordic Product corresponding to this guarantee (“The Product”) doesn’t have any default in conformity at this time of delivery.
   1.2. The guarantee term for the product is two (2) years and will be calculate from the date of delivery to the purchaser.
   1.3. In the event of any default in conformity of the product and the purchaser notifies the seller of such default during the guarantee period, the seller is obliged to repair and replace the Product at its own cost in the place that he considers convenient, unless it is impossible or disproportionate.
   1.4. When it is not possible to repair or replace, the purchaser may request a proportional reduction in the price, or, if the default in conformity is sufficient significant, the termination of the contract.
   1.5. The parts replaced or repaired under this guarantee will not extend the guarantee term of the Product, although will have their own guarantee.
   1.6. In order for this guarantee to come into effect, the purchaser must prove the date of acquisition and delivery of the Product.
   1.7. If after six months from the delivery of the Product to the purchaser, a default of the conformity of the product is notified, the purchaser must prove the origin and existence of said defect.
   1.8. This Guarantee Certificate does not limit or prejudge the rights corresponding to the consumers by virtue of national compulsory standards.

2. INDIVIDUAL TERMS
   2.1. This Guarantee covers the following Rex Nordic products and product ranges: “Mass filters”.
   2.2. This Guarantee Certificate will be applicable in countries of the European Union. Any country outside the European Union may be subject to minimum internal guarantee requirements.
   2.3. In order for this guarantee to be effective the purchaser must strictly follow the manufacturer’s instructions included in the documentation accompanying the Product,  if said documentation is applicable depending on the range and model of the Product.
   2.4. When a schedule is given to replace, maintain or clean certain parts or components of the Product, the guarantee will only be valid if this schedule has been followed correctly.

3. LIMITATIONS
   3.1.This guarantee will apply exclusively to sales made to consumers. A “consumer”, is understood to be the person who acquires the Product for purposes not connected with his professional activity.
   3.2. No guarantee is given for the normal wear through using the product. With regard to parts, components and/or expendable equipment such as mechanical seals, bearings and water tightness, the documentation accompanying the product will be applicable, as the case may be.
   3.3. The guarantee does not cover accessory elements of the product “Mass filters” not explicitly included on it, such as panel board, converter, protection devices, etc.
   3.4. The guarantee covers Product’s failures originated only and exclusively by materials defect and/or performance works. The guarantee doesn’t cover cases such us the Product: (I) has been object of an incorrect handling; (II) has been installed, repaired, maintained or manipulated for an non-authorized person or (III) has been repaired or maintained with non-original spares. It’s out of the present guarantee the slight damages originated by accidental tears or inadequate as:
   • Pump working without water
   • Incorrect dosification of chemical products on the swimming pool
   • Water damage originate in external elements to the pumping conditions.
   • Inadequate ventilation
   • Use in different applications of swimming pool water filtration.
   3.5. The guarantee does not cover cases of incorrect installation or start-up unless said installation or start-up is included in the sales contract of the Product and has performed by the seller or under his responsibility. This cases are covered by the installer or the seller who installed the product.

FLUIDRA
INQUIDE

CODE: 09443

EVIDENCE OF CONFORMITY

• The products listed above are in compliance with the safety prescriptions:
• 2006/42/EC Machine Directive Safety prescriptions
• 2014/35/EU Low voltage directive
• 2000/14/EC Noise émission directive
• 2015/863/EU modify Annex II of 2011/65/EU
• EN 60335-1:2012/A11:2014.
• EN 60335-2-41:2003/A2:2010.
• EN 50581:2012 / EN 63000:2018 RoHS III technical documentation.
• EN 62233:2008 Measurement methods for electromagnetic fields of
• household appliances and similar apparatus with regard to human exposure
• 1907/2006/EC REACH.

SIGNED THE PRESENT CONFORMITY EVIDENCE
SIGNATURE 07/05/2021
Recycling
This symbol is required by European Community Directive 2012/19/UE on WEEE (Waste Electrical and Electronic Equipment) and means that your appliance must not be  thrown into a normal bin. It will be selectively collected for the purpose of reuse, recycling or transformation. Any substances it may contain which are potentially dangerous to  the environment shall be eliminated or neutralized. Request information on  recycling procedures from your retailer.

TECHNICAL CARACTERISTICS

09443-0008 / Rev. 00
– We reserve the right to change all or part of the features of the articles or contents of this document, without prior notice.

rexnordic.com
Technical support and service
North UK Service I +44 7538 959 818
South UK Service I +44 75 3895 9836
Customer Support I 013 553 773 70
service@rexnordic.com

References

• Front page - Rex Nordic UK Ltd

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