Showing posts with label swimming-pool-maintenance-in-dubai. Show all posts
Showing posts with label swimming-pool-maintenance-in-dubai. Show all posts

Sunday, July 29, 2018

Swimming Pool Maintenance in Dubai l Swimming Pool Cleaning Company in Dubai

General Swimming Pool Maintenance in Dubai Instructions

 Introduction

Only a regular and organised scheme of swimming pool maintenance in Dubai work, planned to cover all details of the installation, within given swimming pool maintenance periods, can ensure continued satisfactory operation with a minimum liability to interruptions to supply due to equipment faults.  A swimming pool maintenance scheme is also a requirement under the Electricity at Work Regulations.

Careful attention must be given to securing the safety of personnel and equipment while swimming pool maintenance or repair work is in progress.

swimming pool maintenance in dubai
Swimming Pool Maintenance in Dubai
A planned swimming pool maintenance scheme should include a system of logging wherein records are kept of inspection swimming pool maintenance and repair on all items of plant and equipment.

Plantrooms should be kept clean and the practice of using Plantroom space for storage must not be permitted.

Where swimming pool maintenance work is in progress a DANGER notice must always be attached to any 'live' apparatus calling attention to the danger of approach.  A CAUTION notice must always be attached to plant or its associated control equipment, warning of possible damage to equipment which may be occasioned by interference.

Before any work is commenced on any item of equipment, the supply and ancillary circuits must be isolated and locked off if possible.

All safety precautions and general recommended procedures relating to the swimming pool maintenance of switchgear are contained in the BS CP 5405 (1976) and this should be read in conjunction with the instructions for routine periodic swimming pool maintenance given in the following pages.

Safety Procedure

The following is a guide to the procedures to be generally adopted to ensure the safety of personnel and to protect plant and equipment from damage.

Access to Plantrooms and electrical distribution equipment must be limited to authorised personnel who are members of the engineering staff.

Before making a circuit 'live', the equipment or outlets served must be checked to ensure that plant, equipment and switchgear are serviceable and safe to operate.

Where switchgear, distribution boards or any other item of plant or equipment is out of service, unserviceable or unsafe, the item in question must be electrically isolated, all fuse switches and MCB's switched off and a suitable warning notice fixed in place.

swimming pool Maintenance work should be effected under the control of a 'permit to work' system designed to ensure that all necessary safety precautions are put into effect before work is allowed to commence.  A 'permit to work' should be issued by an authorised engineer only after all safety requirements have been met.  No swimming pool maintenance work should commence until the 'permit to work' has been issued.

Check and ensure that Plantrooms are clean and free from obstruction.

Check to ensure that all equipment access panels and doors are closed and secured.

Ensure that all tools and safety equipment are serviceable and in their proper storage space.

Check those fire-extinguishing systems are serviceable.

Permit to Work

Before commencing work on any item of plant or equipment, it is suggested that authorisation is obtained.  This authorisation should be in the form of a 'permit to work' ensuring that the equipment in question is isolated from the system and that supply ancillary circuits are isolated and locked off.  Danger and caution notices must be displayed and must be firmly attached to supply and control switchgear.

  EXAMPLE OF PERMIT TO WORK
EXTRACTED FROM CP 1008
PERMIT TO WORK ON ELECTRICAL APPARATUS
SERIAL NO. ____________________________

Part 1

a  Authorisation for Works.  This Permit is issued for the following work..................................................................................................................... By.........................................................................................................................
T  To ....................................................................................................................... being an authorised person in charge of switching and earthing operations.


b. Switching and Isolating.  The apparatus is to be disconnected from all live conductors by the following operations. ..........................................................................................................................................................................................................................................................

c.  Potential Tests and Earthing.  Potential Indicator Test to be applied before fixing earth’s at the following points ..........................................................................................................................................................................................................................................................

d. Danger Notices are to be posted at
     ..........................................................................................................................................................................................................................................................


e. Caution Notices are to be posted at
..........................................................................................................................................................................................................................................................Time............................................................Date.................................................
Signed.........................................................Rank................................................

Permit to Work

A permit to work is a written authorisation to carry out work on or about electrical apparatus, signed for or on behalf of the person on whom the occupier's responsibility for safety rests.  It should, as a minimum, set our clearly and concisely the apparatus on which the work is to be done, the extent of the work and the precautions which are to be taken or have been taken to ensure that the apparatus designated is safe to work on.

Permits to work should only be issued by a person specially authorised in wiring by the occupier to do so.

The permits should be numbered serially for reference and should be in duplicate.  One copy should be retained by the issuer and one copy handed to and signed as an acknowledgement of its terms by the person carrying out or in charge of the work; he should retain it until the work is completed or stopped.

When the work is completed or stopped, the appropriate section of the permit should be signed by the person to whom it was issued and the permit returned to the issuer for cancellation.  In those cases where the permit is returned prior to the completion of the work, a note to that effect should appear on the permit and work should not be recommenced until a fresh permit is issued.

The apparatus designated in the permit or permits as 'dead' must not again be made 'live' until every permit covering that apparatus has been cleared by the person to whom it was issued and returned to and cancelled by the issuer.

When a person authorised to issue permits to work intends to do work on the apparatus himself, he should complete a permit to work form to ensure that he is taking the same precautions as he would when authorising work by others.


Under this heading only general guidance can be given.
It is assumed that the plant operator will fully use all the skills and resources at his disposal, including a study of the manufacturers' instructions.

If a fault or breakdown occurs, and the reason for it is not immediately apparent, consider the following:

a)    Is the breakdown due to plant or supply failure?

b)    If it is the plant, identify the plant.

c)    Determine the cause of failure of plant.

d)    Decide if the plant failure can be rectified or repaired with the labour and materials available at site.

e)    If the breakdown is due to supply failure, identify which supply, i.e. gas, water, oil, electricity.

f)     Can the supply be restored?


Negative answers to the above will probably necessitate obtaining outside assistance, the kind being determined by the cause of the fault, which should be known broadly, if not in detail.  For instance:

·         An electrical fault requires an electrician (or possibly the Electric Supply Company).

·         A mechanical fault may require the manufacturer's service engineer.

·         Certain faults may not clearly fall into either of the above categories or may not even have been identified.  In these cases a specialist swimming pool maintenance services firm should in the first instance be called in.



Other breakdowns or faults may need to be dealt with by the Water Board, Gas Board or Fire Brigade.

It is always helpful when calling outside help to give at the time as much information as possible.  For instance, if a spare part is known to be required, this can be brought on the first visit to site with consequent saving of time and cost.  In some cases, temporary repairs may have to be made in order to quickly restore the plant to a workable condition.  It is essential that this is followed by proper and lasting repairs at the earliest convenient time.

            Depending upon the type of breakdown, a decision must be taken on whether the matter is urgent or not.  For instance, standby equipment (e.g. a swimming pool pump) may be available.

            When a breakdown occurs, action may need to be taken immediately to render the plant safe. In such cases the procedure as outlined elsewhere for shutting down the plant and switching off swimming pool pumps etc. must be followed before any other action necessitated by the breakdown is carried out.  Under the latter heading would be included such action as work on swimming pool pumps, isolation of plant and circuit because of leaks etc., emptying down, lubrication of moving parts, cleaning of strainers, replacing fuses and similar jobs.

Finally, always try to establish the cause of a breakdown as distinct from merely rectifying the effect.  Although the immediate need may be to restore the plant to working order without delay and by whatever means are possible, never be satisfied with any action, which only repairs the defect or replaces the part.  Investigation in depth may reveal some underlying fault which, if not corrected, may result in a reoccurrence of the trouble, or even perhaps later development of other or more serious faults which are not yet apparent.

Careful and complete details should be recorded of all breakdowns in the logbook.  Date of occurrence, which particular item of equipment, details of the breakdown, any immediately previous swimming pool maintenance work carried out, previous warnings or evidence of trouble which may have gone unheeded (or acted upon), how the plant generally was operating, any special circumstances or relevant details, readings of hour running meters at the time, or similar information should all be accurately and fully recorded, together with full details of action taken, including both temporary and/or permanent repairs or replacements.  Such records are not only useful to the operating staff, but often provide invaluable clues to outside specialists and service engineers.  From the information given, they may be able to offer advice on improved operating techniques to prevent or minimise reoccurrence of the breakdown.


Backwashing

During filtration, the effectiveness and the efficiency of the swimming pool filter reduce due to the excessive build up of debris in the pool filter clogging pre-coated elements.  These results in pressure build up in the pool filter.  When the pressure loss in the pool filter becomes more than 15 PSI the sand filters need to be backwashed. Only one sand filter can be backwashed at a time.  Immediately after starting the backwashing, top up the water level by opening the quick fill valve.  It is suggested that backwashing should be carried out at least once a week even if the pressure loss does not increase to more than 15 PSI.
Stop the filter pumps.


Switch off the auto chlorine and pH controller and heaters.


Select Filter 1 and position the valve as for Backwashing.


Select one swimming pool pump for backwashing purpose.


Start the filter pump.

  
Run for 3 minutes.  The pool water is being forced into the swimming pool filter in a reverse direction and all the effluent to be flushed through the swimming pool filter drain valve to waste.

 Close the drain valves and Swimming Pool Filter valves for Pool Filter 1.
  
Proceed to backwash swimming pool Filter 2
  
When both swimming pool Filters have been backwashed and clear water is running to waste, position the valves as of Filtration.

Replacement of Sand for the swimming pool Filters

The swimming pool filter sand needs to be replaced at least every 12 to 18 months.

Open the swimming pool filter manhole

Remove all the clogged sand, this should be done in a wet condition of the sand.  Care should be taken not to damage the laterals.

·         First replace pea gravel (10mm2 ) 10 inches above the bottom laterals.  Above the pea gravel, fill swimming pool filter sand 5 inches below the top delivery pipe.

·         Close the pool filter and start filtration.

Electric Motors

a)            Regular swimming pool maintenance must be carried out, and the following programme takes precedence over other instructions unless if conflicts with those of the maker.

b)            All electric motors should be kept clean and dry.

c)            Some electric motors have self-lubricated sleeve bearings or packed-for-life ball bearings, both of these contain sufficient lubricant for the economic life of the bearings.  Alternatively, they may require attention only at intervals of say 5 years.

d)            WARNING:  Before carrying out swimming pool maintenance work switch off the electric supply.  This must be done from the starter.  The isolator, which can be integral with the starter if local to the motor or separate and local to the motor, should then be switched off.  This is a safety device provided for isolation purposes only, and it must never be used as a means of stopping the motor, except in the event of an emergency.

Every Month

a)            Unless the motor is fitted with self-lubricated or packed-for-life bearings, check and if necessary lubricate all motor bearings in accordance with maker's instructions, taking care to prevent the entry of grit or dirt.  Avoid over lubrication.


b)            Check for leaks and remove all surplus lubricant spreading from the bearings.  Replace seals if necessary.

c)            All standby motors should be inspected and jogged by hand or electrically.

Every 3 Months

a)            Blow out all motors except totally enclosed types with compressed air or hand bellows to remove dust and dirt.

b)            Ensure that all flexible conduit connections are sound and all terminal nuts secure.

c)            Inspect motors in a damp situation or with difficult access; carry out insulation checks on both motor and wiring.

d)            Check the operation of centrifugal operated switches (where fitted) of resistance and capacitor start motors; check contacts for undue wear.

e)            Check for signs of overheating of, and leakage from, electrolytic capacitors (where fitted) to capacitor start motors.

f)             Examine starter for cleanliness.  Clean contacts using an approved lubricant.  Abrasive materials must not be used to clean the contacts.  Check the clean operation of the switching actions.  Make sure the indicator lights and interlocks function properly.  Check the timer settings (refer to separate instructions).

Every   Running Time (12 Months)

a)            On grease lubricated ball/roller bearing motors (except bearings packed for life), remove all old grease, wash out the bearings, housings, seals etc. with a suitable detergent.

b)            Check bearings for wear; if necessary fit replacements.

c)            Repack the bearings as in 1. above.  First, the bearing itself should be fully packed, then the housing should be one third filled with grease.

Average Use of Chemicals / Month of swimming pool Maintenance

Refer to the attached sheet for the quantity of average use of chemical for optimum inventory management.  This quantity is approximate.  Regular inventory monitoring and updating is the responsibly of the operator to access actual usage per month.
Chemical Monitoring Chart

A standard chart for monitoring the pool is attached.  This chart is to be used by the pool technicians and values recorded from time to time for effective control of parameters.

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