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8

Maintenance

PAD-V

INSTRUCTION
MANUAL

MITA-PAD-V-MAN-IT-
201812

© MITA Cooling Technologies
S.r.l.

48 / 59

8.2 Specific safety warnings

8.2.1 Fans and pump

• Disconnect the power supply to the motors before carrying out any kind of work. If necessary, install

a key switch in the immediate vicinity of the machine.

• Never activate the fan if its protective grille has been removed;

• When performing work on the fan and/or its motor, use scaffolding or an aerial work platform: the top of the

cooler is not designed to be walked on.

8.2.2 Protection against biological Hazards

The wetting water, even though appropriately managed with the refreshment cycles envisaged in
adiabatic operation, may represent a potential source of risk of biological contaminants, particularly
during periodical maintenance and cleaning operations.

The personnel that may be directly exposed to the moist air flow, or the maintenance staff, must wear
appropriate PPE, in particular a respiratory protection (mask) approved by the authorities in charge
and/or in compliance with the Directive

2016/425/UE.

IMPORTANT

Cooler maintenance staff should follow the recommendations provided in EUROVENT
9-7 guidelines (Ed. 2011) to keep cooling systems safe and efficient.

8.3 Summary of routine maintenance and checks

DRY MODE

COMPONENTS TO BE CHECKED

HEADING

REFERENCE

EVERY

MONTH

EVERY 3

MONTHS

EVERY 6

MONTHS

ONCE A

YEAR

Cooler body (oxidation or rust)

8.3.2

•

Air inlet panels (cleaning and panel
integrity)

8.3.3

•

Motor fan assemblies(abnormal
vibrations or noises)

8.3.5

•

Heat exchange batteries (cleaning,
fins integrity)

8.3.6

•

Table 4 - Summary of routine maintenance and checks

– Dry Mode

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Содержание ADIABATIC PAD-V

Страница 1: ...INSTRUCTION MANUAL ADIABATIC LIQUID COOLERS AND GAS CONDENSERS PAD V TRANSLATION OF THE ORIGINAL INSTRUCTIONS ...

Страница 2: ...ENGLISH ...

Страница 3: ...16 07 2020 Rev 03 Regulations Intended Use Residual Risks update 01 02 2021 2021 MITA Cooling Technologies S r l All rights reserved No part of this publication may be reproduced or circulated by any means including photocopies microfilm or other without prior authorisation from MITA Cooling Technologies S r l ...

Страница 4: ......

Страница 5: ...ical data 26 4 TRANSPORT HANDLING AND POSITIONING 28 4 1 General warnings 28 4 2 Transport 29 4 3 Packaging and unpacking 29 4 4 Moving the machine 31 5 INSTALLATION 33 5 1 General warnings 33 5 2 Positioning 33 5 3 Component assembly 35 5 4 Hook up to power supplies 35 5 5 Use of the equipment as a liquid cooler 35 5 6 Use of the equipment as a gas condenser 37 6 PUTTING INTO SERVICE AND PRELIMIN...

Страница 6: ...MITA PAD V MAN IT 201812 MITA Cooling Technologies S r l 4 59 0 PAD V Contents INSTRUCTION MANUAL 9 ADDITIONAL INSTRUCTIONS 56 9 1 General warnings 56 9 2 Decommissioning and scrapping 57 ...

Страница 7: ...ctly prohibited unless expressly authorised by the Manufacturer Any unauthorised reproduction will be prosecuted in accordance with the law ALL RIGHTS RESERVED All copyright to this manual is reserved by MITA Cooling Technologies S r l The manual cannot be transferred to third parties for viewing without the written authorisation of MITA Cooling Technologies S r l 1 1 2 Updates Machine illustratio...

Страница 8: ...onsulted by machine operators and must always accompany the machine in the case of transfer or resale CAUTION The manual must be kept with care and replaced if it deteriorates and or becomes illegible 1 1 4 How to print the Instruction Manual IMPORTANT In order to ensure that the paper version of the Instruction Manual matches the electronic one we advise you to print off copies in colour CAUTION ...

Страница 9: ...ible place so that it is always available when needed 1 3 1 Page layout Key A MANUAL HEADING B FOOTNOTES 1 CHAPTER of the instruction section NUMBER and NAME 2 Series 3 Manufacturer s logo 4 Type of manual 5 Current page number total number of pages in the manual 6 Manufacturer s name and copyright 1 Title Chapter title z 1 Chapter number 1 1 Title Heading 1 Chap No 1 Heading Number 1 1 1 Title Su...

Страница 10: ...and or information or a precaution that must be observed to avoid operations that may damage the machine IMPORTANT Indicates technical information of particular importance which should not be overlooked ENVIRONMENTAL NOTE Indicates the obligation to dispose of waste materials in an ecological manner ELECTROCUTION HAZARD Indicates situations of potential danger that can seriously endanger people s ...

Страница 11: ...es S r l come with an identification data plate affixed to the exterior wall near the control panel Fig 1 Figure 1 Location of the EU data plate This plate indicates all the machine s technical data together with its year of construction and serial number Fig 02 CAUTION It is strictly forbidden to remove or tamper with the identification data plates on the machine Figure 2 Facsimile of the EC data...

Страница 12: ...ability for accidents involving persons or things caused by a failure to observe the instructions and regulations provided in this manual or the non observance of the safety and accident prevention regulations in force in the country of machine use 1 6 Warranty Any damage resulting from wear and tear of machine parts caused by normal use of the machine is excluded from the warranty MITA Cooling Te...

Страница 13: ...1 PAD V General information INSTRUCTION MANUAL MITA Cooling Technologies S r l MITA PAD V MAN IT 201812 11 59 PAGE LEFT INTENTIONALLY BLANK ...

Страница 14: ... perform maintenance disassembly and technical assistance operations and replace and reassemble mechanical parts or equipment identify mechanical breakages damage and determine the relative causes perform calibration and lubrication operations foresee the hazards linked to these operations MAINTENANCE ELECTRICIAN Person with specific and certified qualifications responsible for performing electric...

Страница 15: ...ine and its accessory tools are free from risks to people s health and safety All parts supplied by third parties are CE marked when required and comply with the relevant reference directives All components have been strictly checked in compliance with the quality standards prescribed by the regulations in force Furthermore the necessary warning and protective measures against residual risks have ...

Страница 16: ...ing and handling operations During lifting and handling operations there are risks associated with operations performed on the machine by unqualified untrained uninstructed or incorrectly equipped personnel incorrect choice or incorrect use of the means of transport and or equipment for example crane hoist winch forklift truck used to handle the machine components crushing of personnel involved in...

Страница 17: ...e distance Always give out a warning that manoeuvres are about to commence Never pass under suspended loads Never travel on suspended loads 2 5 2 Installation and connection Residual risks during installation and connection operations During installation and connection operations there are risks associated with operations performed on the machine by unqualified untrained uninstructed or incorrectl...

Страница 18: ...osure to noise during operations contact with live parts in the event of incorrect maintenance contact with pressurised and or hot fluids maximum temperature 90 C should any valve or pipe rupture flying particles in the event of breakage of working parts with projection of the same or of part thereof and or the parts being processed rupture of components in the fluid distribution containment and m...

Страница 19: ...le the external panels fixed guards which have a weight of about 10 kg It is however advisable to have this operation performed by two operators Do not get onto the machine none of its parts are to be considered walk surfaces Use standard aerial work platforms or an equivalent system Always wait for parts to cool down before commencing work on them Perform the required work using standard work too...

Страница 20: ... the machine that could affect its safety without first obtaining written authorisation from the Manufacturer Before restarting the machine make sure no one is carrying out maintenance operations near the machine and that all safety devices on the machine have been reset Do not climb up or down the machine When handling lubricants do not smoke eat or drink Comply with the regulations in force conc...

Страница 21: ...ffixed due to the presence of moving parts Indicates a burns scalds hazard due to the presence of hot surfaces and liquids Indicates a generic hazard and the obligation to read the Use and Maintenance Manual in full before working on or with the machine Indicates that it is prohibited to remove the guards Indicates that it is prohibited to lubricate grease and or adjust moving parts Indicates the ...

Страница 22: ...perator must have read this manual in full and be completely familiar with the position and operation of all the controls and the characteristics of the machine The operators responsible for running the machine must be suitably trained to use it safely and to its best performance level and must be able to work in a comfortable environment that guarantees the best possible level of safety and hygie...

Страница 23: ...sures that make it possible to operate safely near the machine CAUTION tampering with or the unauthorised replacement of one or more machine parts and the use of accessories tools and consumables different to those indicated by the Manufacturer can generate injury hazards ENVIRONMENTAL NOTE all materials with an environmental impact that must be thrown away following servicing or work on the machi...

Страница 24: ...t of different intended uses it is essential to first consult the Manufacturer s Technical Office 2 9 Design standards and criteria During the machine design phase the principles and concepts set out in the relative paragraphs of the harmonised standards indicated in the following table were adopted STANDARD TITLE UNI EN ISO 12100 2010 Safety of machinery General principles for design Risk assessm...

Страница 25: ...ifier pack it returns to the collection tanks This allows for short wetting cycles at long intervals from each other When the minimum level sensor indicates that the water level in the tanks is insufficient for a new wetting cycle more water is drawn in through the make up pipe Periodically the tanks are emptied and the water in the wetting circuit is almost completely changed The machine is also ...

Страница 26: ... Axial electronic motorised fan EC 2 Wetting water distribution channel 3 Adiabatic air temperature probe 4 PVC Air inlet panels 5 Adiabatic Humidifier pack 6 Wetting water collection tank 7 Cooled air temperature sensor 8 Heat exchange batteries 9 Cooled fluid inlet connections 10 Fluid to be cooled outlet connections 11 Collection sump 12 Recirculation kit ...

Страница 27: ...e into the transiting air flow ensuring maximum humidification and maximum temperature reduction To ensure maximum efficiency it must be kept clean and in optimum condition Pos 6 Wetting water collection tank Made of welded AISI 304 they collect the water dripping from the adiabatic humidifier pack and transfer it to the sump in the recirculation kit Pos 7 Cooled air temperature sensor An NTC type...

Страница 28: ...c float type the minimum level sensor protects the pump from any risk of cavitation and indicates the need to replenish the water in the sump the maximum level sensor manages the maximum water level in the sump Make up pipe PVC pipe with threaded gas connection of a diameter suitable for the circulating flow rate Overflow PVC pipe which comes into use if the fluid level in the tanks exceeds the ma...

Страница 29: ...3 PAD V Machine description INSTRUCTION MANUAL MITA Cooling Technologies S r l MITA PAD V MAN IT 201812 27 59 PAGE LEFT INTENTIONALLY BLANK ...

Страница 30: ...by qualified personnel who are familiar with the contents of this manual CAUTION Make sure there are no unauthorised persons in the area where the machine is to be loaded unloaded from the means of transport CAUTION During operations the operator must wear all the necessary Personal Protective Equipment PPE based on the particular stage in the machine s life cycle See heading 2 Safety IMPORTANT Th...

Страница 31: ...vehicle with wooden blocks underneath so that it can be taken off with a forklift LOAD ON OPEN BODY TRUCK LOAD ON TAUTLINER Figure 5 Transporting the PAD V When dictated by the width of the vehicle the yellow plates see figure below used for unloading with a mobile crane are removed from the machine and delivered separately together with the relative fasteners These plates must be repositioned on ...

Страница 32: ...ispose of them in accordance with the relative legislation in force in the country of use IMPORTANT Should you notice any damage or missing parts notify the carrier and the Manufacturer immediately providing photographic evidence 4 3 2 Storage If the cooler isn t going to be used for a long period of time in order to keep the equipment efficient for next start up Close the make up water supply com...

Страница 33: ...oaded and unloaded by either a forklift truck or a mobile crane Forklift truck minimum fork length 2 5 m minimum fork width 200 mm minimum adjustable distance between centres 1 60 m Ref 1 Fig 7 Mobile crane adequate capacity check the unladen weight of the machine in the technical data of the specific model use a spreader bar so that the lifting belts or ropes remain spaced from the longitudinal a...

Страница 34: ...st be assembled as shown in the image using the special fasteners provided WARNING Pay particular attention to balancing the load especially when using spreader bar lifting systems CAUTION All handling and lifting operations must be performed by qualified personnel The lifting mean used must have a capacity at least equal to the unladen weight indicated on the identification plate Never stand unde...

Страница 35: ...ad and understood the contents of this manual studied the relative images and adopted the safety and protection measures described 5 2 Positioning Maximum performance of each cooling system also depends on the observance of some general rules which should be followed The adiabatic cooler must always be installed outdoors preferably in a well ventilated area and making sure there is a minimum clear...

Страница 36: ...pace position the cooler so that the surrounding clearance permits free circulation of the air correct positioning of the pipes and free access for maintenance operations Figure 9 PAD V positioning 5 2 1 Installation surface and base Always install the machine on a plane and perfectly horizontal surface so that the fans do not rotate unbalanced otherwise causing damage to the motor bearings For mo...

Страница 37: ...mary circuit utility Copper pipes with threaded or flanged connectors these must be made taking into account any possible thermal expansion It is advisable to insert suitable rubber compensation joints Provide an independent support bracket in a completely closed circuit so that the weight of the piping arriving from the system at the battery connections does not create an excessive burden Provide...

Страница 38: ... for adiabatic cooling Water drain and overflow to be connected to the drainage network for eliminating water in the refreshing cycles or any surplus water inside the collection basins Basin emptying to be connected to the drainage network for totally emptying the water collection tanks and avoid stagnation over the winter season All the connections above are threaded gas on request different type...

Страница 39: ...ion of the pipes forming the external system of the machine the line conveying the gas towards the exhaust line Use suitable high quality pipes executing the welds and joints according to the plumbing engineering standards Anticipate any possible system extension involving the addition of other evaporative condensers It is preferable to size the piping taking into consideration possible extension ...

Страница 40: ...MITA PAD V MAN IT 201812 MITA Cooling Technologies S r l 38 59 6 Installation PAD V INSTRUCTION MANUAL PAGE LEFT INTENTIONALLY BLANK ...

Страница 41: ...uipment PPE based on the particular stage in the machine s life cycle See heading 2 Safety WARNING Before proceeding with any type of procedure it is essential to have read and understood the contents of this manual studied the relative images and adopted the safety and protection measures described CAUTION During checks the operator runs the risk of falling from a height and the relative conseque...

Страница 42: ...ch have first required a cut off of the power supply line Make sure that there are no abnormal vibrations in the machine as a whole 2 Check that the wetting pump is working properly IMPORTANT The pump must only be started when the water level in the sump is adequate for proper functioning 3 Check the seal of all the plumbing joints and the various connection pipes 4 Run the wetting pump fan and pr...

Страница 43: ...onnel who have been trained in the precautions to be observed regarding machine use CAUTION Make sure there are no unauthorised persons in the work area CAUTION During operations the operator must wear all the necessary Personal Protective Equipment PPE based on the particular stage in the machine s life cycle See heading 2 Safety IMPORTANT The Manufacturer declines all liability for operations pe...

Страница 44: ...0 C dry running ensures that no ice will form in or on the components of the cooler as long as the following precautions are taken The heat exchange batteries must be filled with water and glycol in a percentage appropriate to the minimum outside temperature expected Empty the water collection tanks by opening the manual emptying valve It is recommended to insulate the water feed and return pipes ...

Страница 45: ... in dusty and polluted environments During its operation the fans of the adiabatic cooler suck in a considerable amount of air which crosses the internal parts of the cooler itself As far as possible you should avoid installing the cooler in particularly dusty areas as well as in close proximity to trees which may release in some periods of the year pollen or leaves that can be sucked in by the fa...

Страница 46: ...ng to the logic illustrated below Dry running used during the winter period when the air does not undergo the humidification process In this case the air entering the cooler passes through the dry adiabatic pack and hits the battery cooling the fluid inside Adiabatic operation envisaged during the summer season when the air undergoes an adiabatic cooling process In this case the air passes through...

Страница 47: ...ctional logic of the PAD V adiabatic cooler envisages daily replacement of the wetting water regardless of whether it is used or not This approach minimises the root causes of water stagnation and the build up of substances which could potentially cause the development of bacteria as the length of time the water remains inside the machine is not sufficient to create this condition CAUTION In addit...

Страница 48: ...MITA PAD V MAN IT 201812 MITA Cooling Technologies S r l 46 59 PAGE LEFT INTENTIONALLY BLANK ...

Страница 49: ...necessary Personal Protective Equipment PPE based on the particular stage in the machine s life cycle See heading 2 Safety Operating personnel MAINTENANCE ELECTRICIAN MAINTENANCE MECHANIC CAUTION It is the client s responsibility to establish a suitable operating procedure for performing work at a height instructing the personnel involved and providing all the necessary tools and equipment includi...

Страница 50: ...sk of biological contaminants particularly during periodical maintenance and cleaning operations The personnel that may be directly exposed to the moist air flow or the maintenance staff must wear appropriate PPE in particular a respiratory protection mask approved by the authorities in charge and or in compliance with the Directive 2016 425 UE IMPORTANT Cooler maintenance staff should follow the ...

Страница 51: ...DIABATIC SEASON Humidifier pack in continuous operating mode summer season 8 3 4 Wetting water distribution circuit and the water distribution and collection basins 8 3 7 Water supply drain and make up system including level indicators 8 3 8 Water make up and drain valves 8 3 8 Water recirculation pump 8 3 8 Functional check of the entire wetting circuit 8 3 2 Table 5 Summary of routine maintenanc...

Страница 52: ...ure If necessary restore the affected area by removing the oxidation and restoring the paintwork If you need to clean this simply wash with water and soap or a suitable detergent We strongly advise against the use of solvents 8 3 3 Maintenance of the PVC air inlet panels The panels placed on the cooler s air inlet have the triple function of preventing direct light from reaching the humidifier pac...

Страница 53: ...y available on the market 8 3 7 Maintenance of the water distribution and collection system The water distribution system on the humidifier pack and water collection consists of AISI 304 stainless steel channels in order to prevent any oxidation and corrosion even in when running in dry mode The water is distributed by gravity and the holes have a diameter large enough to avoid clogging No nozzles...

Страница 54: ...ill negatively affect performance Cleanliness of the suction area Using the pump where the water is hard or very sandy may shorten the life of the mechanical seal 8 4 Extraordinary maintenance For any extraordinary maintenance work not described in this manual turn to technicians specifically appointed by MITA Cooling Technologies S r l CAUTION MITA Cooling Technologies S r l shall not be held res...

Страница 55: ...ooling Technologies S r l Check that the gaps between the fins and the pipes in the heat exchange battery are not scaled up or clogged Contact the Technical Office of MITA Cooling Technologies S r l Water drawn outside the unit Check the correct distribution of the water on the humidifier pack Clean the distribution tanks or contact the technical office of MITA Cooling Technologies S r l Check tha...

Страница 56: ...S r l Check that no hot air is being drawn in from other sources Contact the Technical Office of MITA Cooling Technologies S r l Check the condition of the humidifier pack making sure it is not damaged clogged or scaled up Replace the humidifier pack Check that the heat exchange battery fins or tubes is not scaled up Contact the Technical Office of MITA Cooling Technologies S r l Vibration and or ...

Страница 57: ...8 PAD V Maintenance INSTRUCTION MANUAL MITA Cooling Technologies S r l 55 59 PAGE LEFT INTENTIONALLY BLANK ...

Страница 58: ... 2 Safety Since the machine is disconnected from the various energy supplies the operator must wear the personal protective equipment deemed most appropriate based on the type of residual or intrinsic risks involved in disassembling the parts During dismantling operations make sure the parts of the machine being removed are of a weight which can be lifted by the operator and that they do not repre...

Страница 59: ...smantling work on the machine or its parts make sure that it has been disconnected from the electrical and pneumatic power supplies IMPORTANT Within the European Community electrical equipment must be disposed of in accordance with the prescriptions set out in Community Directive 2012 19 EU on waste electrical and electronic equipment WEEE CAUTION The user must dispose of the equipment at a waste ...

Страница 60: ...water Table 4 Summary table of routine maintenance and checks Dry Mode Table 5 Summary table of routine maintenance and checks Adiabatic Mode Table 6 Troubleshooting LIST OF FIGURES Figure 1 Location of the EC data plate Figure 2 Facsimile of the EC data plate Figure 3 PAD V model code Figure 4 Main PAD V components Figure 5 Transporting the PAD V Figure 6 Rigging plate Figure 7 Lifting the PAD V ...

Страница 61: ... MITA Cooling Technologies S r l 59 59 9 PAD V Additional instructions INSTRUCTION MANUAL PAGE LEFT INTENTIONALLY BLANK ...

Страница 62: ...MITA Cooling Technologies S r l Via del Benessere 13 27010 Siziano PV Italy Tel 39 0382 67599 Fax 39 0382 617590 www mitacoolingtechnologies com info mitact it ...

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