Cooling towers series TMR
Contents
1. Figure 2 10 REFERENCE TO MODELS In the following pages we give instructions related to different typologies of the models of the series TMR To make the instructions easier we will refer to the following model groups 09121314 16 18 21 28 28 31 34 38 41 44 51 56 61 66 70 76 83 88 94 103 109 122 132 58 64 74 112 125 134 144 160 180 210 225 250 265 280 310 335 360 375 415 450 SHIPMENT TMR cooling towers groups A and B models are normally shipped completely assembled to facilitate transportation and installation The models of group C are normally shipped divided horizontally in two sections the upper section includes the wet deck fill the water distribution system and the drift eliminator the lower section includes the water basin with the relative connections and the fan section The reassembly operations at the site shall be carried out at Buyer s care and expense following our instructions Any accessory equipment such as silencers marine ladders railing etc shall be always shipped disassembled and also their reassembly at the site shall be carried out at Buyer s care and expense Shipment in one section of these towers must be especially requested when placing order2. o o ci cc cc A A A LOCATION TMR cooling towers offer maximum flexibility of installation Vertical air discharge ensures that the operation of tower is not affected by wind strength and direction for outdoor installation while the high static pressure capacity of centrifugal fans makes it possible to install TMR towers inside closed spaces with ducted air intake and or discharge It is necessary however to keep in mind some basic installation rules which if not observed will impair correct operation of the cooling tower No matter where the tower is installed it will be necessary to leave enough space around the tower for maintenance operation maximum accessibility is specially needed at the water connections and at the inspection manhole In outdoor installations it is extremely important that the air intakes to the fans are not obstructed the tower should be placed so that walls or other obstacles are at a distance from the intake grilles at least equal to the grille eight see Fig 1 Figure 1 A cooling tower should not be installed close to walls or obstacles higher than the tower itself as in certain weather conditions this could cause recirculation of the discharged air If this is absolutely necessary a discharge air hood should be installed to increase the discharge air velocity see Fig 2
3. Figure 7 A 1 Guide pin 2 Round gasket 3 Flat gasket Use 2 pins for each corner 16 al Leakage sealing During transportation and lifting the units can be submitted to stresses that damage the sealing which will result in water leakage during operation Proceed as follows Sealing must always be made from the inside part of joints Seal only perfectly dryed surfaces Remove previous sealants Accurately degrease Do not seal only the area where a leakage is taking place but largely exceed at the two sides Apply the sealant in a sufficient quantity but not excessive and as uniformly as possible If necessary slightly press the sealant to allow the penetration between the surfaces Do not use the unit for at least 24 hours If the sump has been sealed it is advisable to protect the unit with plastic sheets to avoid rain to get inside the unit Of course use only suitable and good quality sealant Our Engineering Department will be glad to give you all the suggestions you may need 17 INSTALLATION It is necessary that the floor on which the tower is installed will be able to bear its operating weight therefore with water in the tower as indicated in TMR catalogue TMR towers as a rule do not need any special foundation having a sturdy base frame which must however rest uniformly on a perfectly levelled and horizontal base For foundation bolts please refer to th
4. 55515 5 5 55155 18 18 18 24 24 24 24 3 12 12 18 8 16 16 1 3 4 4 8 2 3 3 6 6 919 9 9 Drift eliminators 450 Drift eliminators 600 2 2 4 4 4 4 6 6 6 6 8 8 8 8 10 10 10 12 12 Water filter 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Make up ball valve 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Gasket for inspection door 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 Inspection door 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 Door hand wheel 4 4 4 4 4 4 4 4 4 4 8 8 8 8 8 8 8 5 5 5 5 5 5 La ajajaja ABR 2 2 2 2 B 2 B 2 2B 2 2 e A olw inw i 0 COMPONENTS LIST Models TMR U M 5 6 74 112 125 134 144 160 180 210 225 250 265 280 310 335 360 375 415 450 1 1 Electric motor n 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 n 1 1 2 2 2 2 2 4 4 4 Fan pulley Motor pulley Impellers shaft P45 1 Impellers shaft P45 2 Secondary header 175 Secondary header 265 Gasket for header 10 10 10 10 10 10 10 10 20 20 20 20 20 20 20 20 20 Nozzles type 20 90 90 90 90 90 140 140 140 185 185 185 185 230 230 230 280 280 Wet deck fill 900 12 12 12 12 12 32 44 44 24 24 24 24 58 58 58 36 36 Wet deck f
5. The towers divided in two sections are delivered along with a sufficient special gasket and the bolts necessary for the reassembly 12 LIFTING Group A and B models These models can not be divided and are equipped with 4 or 6 lifting devices in the upper part of the unit which allow to lift the all unit see Fig 8 and 8 A Group C models These models are equipped with two sets of lifting devices one in the upper part of the unit and another one inside the lower section The first one must be used to lift the all unit and the second one to lift the lower section only when this is separately shipped In both cases lifting should regard only small movements or the final positioning while for extended lifts such as from ground to the top of buildings a suitable platform under the unit should be used see Fig 5 13 Figure 5 14 REASSEMBLY When re assembling proceed as follows Place the lower section of the unit on a flat surface being sure that the upper edge has not been damaged during transportation Cut a suitable length of gasket remove paper protection from one side a
6. programme specifically designed to address biological control should be initiated when the system is first filled with water and administered on a regular basis thereafter in accordance with supplier s instructions For specific recommendations consult a competent water treatment supplier ES REFERENCE TABLE Description Reference number Material Electric motor Supports with bearings Centrifugal fan Float valve Water filter Make up valve Motor pulley Transmission belt Fan pulley Secondary header Drift eliminators Wet deck fill Gasket for header Spraying nozzle DESCRIPTION OF THE MACHINE BjO N j O Metal Metal Metal Polypropylene Metal Brass Metal Rubber Metal Polypropylene Galvanised steel PVC Rubber Rubber The purpose of the series TMR cooling towers is to cool water by means of the evaporative principle that is rejecting heat by evaporating a small percentage of the water itself The main components of the unit are essentially the water sump inlet air grills evaporating fill headers and nozzles for spraying water drift eliminators centrifugal fans complete with transmission and electric motor casing The water is supplied to the tower by connecting it to a system with circulating pumps connected to the users From the inlet header the water is distributed through a spraying system to the upper part of the fill through it flows to th
7. the indicated frequency may have substantial variations depending on the particular operating conditions of the unit OPERATION 6 months Annual 1 Sump and water filter flushing 2 Water level valve REM X adjustment 3 Nozzles inspection 4 Fill check 5 Belt tensioning 6 Check bleed water X 7 Check vibrations 8 Periodical fan operation X 9 Bearings 2 X 10 Painting 11 Sump draining X 24 1 Basin and water filter flushing 7 Empty the basin so as to eliminate every impurities Clean the water filter removing it if necessary Valve and water level check Check the ball valve to make sure that its operation is correct Tighten the bolts if necessary Nozzles inspection Inspect nozzles to be sure that all of them give a full and continuous spray and are not obstructed or scaled by foreign matters If necessary remove the nozzles this operation can be accomplished without any tool as the nozzles are in rubber and can be disassembled by pulling them gently with alternate rotations The reassembly operation can be made easier wetting the connecting collar Check fill surface As scaling would build up because of improper water treatment and or irregular sprays a frequent check of the fill may save considerable damage to the unit Uniform scaling would mean that water treatment is not correct while localised scaling means that one or more nozzles are not pr
8. Cooling towers series TMR Service manual n MS 12 00 TMR E INDEX Important safety information Description of the machine Location Reference to models Shipment Lifting Reassembly Installation Start up Operation Maintenance Setting out of service and dismantling Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag Pag 21 23 24 31 Thank you very much for purchasing our equipment and be sure to carefully read this manual before using the machine The series TMR cooling towers models 09 450 comply with the European Community rules n 89 392 CEE 91 368 CEE 93 44 CEE and 93 68 CEE 1 IMPORTANT SAFETY INFORMATION Please read carefully this manual before using the machine You will find important information to safely use the machine Caution The machine must be grounded For protection during a lightning storm or when the unit is left unattended and not used for a long time turn off the power supply to the unit This will prevent the unit from damage due to lightning or power line surges Caution After connecting the motors check for the correct rotation of fans Caution Do not approach the unit when it is operating Beware of corners and edges Danger Never introduce hands of foreign matters in the air inlet and outlet of the machine Danger Never open inspection doors when the machine is in operation Danger The maint
9. On the water connections side or on the opposite side it will be necessary to leave a space equal to the length of the fan shaft so that if necessary the shaft can be extracted for replacement of bearings or fan wheels In installations with ducted air sufficiently large inspection openings on air intake and discharge ducts are necessary for easily reaching the inside tower The access to discharge ducts is for reaching spray nozzles after removing drift eliminator and the one to intake ducts for periodical checks of the fans see Fig 3 4 Ducts should be so constructed as to give a minimum pressure drop with a low number of wide radius curves Horizontal stretches of ducts should be slightly sloping towards the tower so that any water droplets which might escape the drift eliminator will flow back to the tower If the air intake and discharge openings are to be ducted care must be taken to place the openings of the inlet and outlet ducts as far as possible from each other to avoid any recirculation of moist air a good solution would be to place these openings on different walls In most cases it will be convenient to use only discharge ducts air intake being made through sufficiently large openings in the walls of the room where the tower is installed bearing in mind the previous remarks about relative location of air inlet and outlet
10. be foreseen to prevent excessive wear of the motors and of the transmission system if any If two speed motors Dahlander type are installed motors must be started at low speed and switched at high speed immediately after If the motor of the cooling tower is remotely controlled by a centralised control panel it is advisable to install an isolating switch in the immediate vicinity of the tower for the complete safety of any maintenance operation For winter operations it is advisable to install electric heaters with safety thermostat in the tower sump in order to be sure that all the water contained in the sump cannot freeze Separate electric wiring from the motor is necessary 19 Sump heater must be controled by an independent thermostat not included in our supply follow up linked to the pump remote control switch and adequately protected against short circuiting The bulb of the heater thermostat must be placed in the water sump as far as possible from the electric heaters and near the sump bottom d Motors connection The electric motors installed on our evaporative cooling equipment are normally insulated in class F with IP55 protection This high protection grade is the best guarantee of good and long lasting operation in the humid ambient where normally the motors are installed However it is important that while connecting the motor a particular care is given to the tight fastening of the cable presser of the ter
11. e base drilling of our Technical Bulletin If the tower must be installed on metal profiles with or without the interposition of shock absorbers closed adequately dimensioned frames will be necessary If towers are installed on top of buildings where noise or vibrations must be avoided hospitals hotels etc it is absolutely necessary that towers rest on metal profiles employing shock absorbers between the metal profiles and the foundation for shock absorbers size please contact manufacturers It is also advisable to place suitable shock absorbing joints on water connections and air ducts if there is any As cooling towers are normally placed in the open air and often on top of buildings it is necessary to take precautions against wind action The base frame should be anchored by means of bolts and steel wires should be connected to the upper lifting ears P m Iz MA 00 L i a u lt a 2c 6 1 940 650 940 700 1000 1180 1590 1640 2180 Mod A Mod B Mod C 18 As far as water connections are concerned they depend mainly on the particular installation and general rules cannot therefore apply We suggest however as follows Caution While welding the flanges to wat
12. e sump At the same time the air blown by fans is pushed in counter current through the fill upside the air stream boosts the evaporating process rejecting the heat from water From the sump the water is exhausted in a closed circuit going back to the users TECHNICAL DATA Model Air flow Number of fans 2 2 2 2 2 2 2 3 3 3 3 4 4 4 4 5 5 5 6 6 pee oo a a A A A A 0 0 m N m m9 PLD m m m m N N m m m Pa 0 50 5 5 5 5 7 5 5 5 7 5 7 5 11 444 5 545 5 5 545 5 7 547 5 5 547 5 5 547 5 7 5411 7 547 5 1141 7 5 11 15 15 22 30 22 30 37 18 51 18 541 22422 30430 22430 30430 30 37 30 30 37 37 Power each motor KW 1 1 8 5 8 5 Pa 100 1 5 2 2 2 2 3 15 5 545 5 7 547 5 7 547 5 11411 7 5 11 7 5 11 11 15 11 11 15 15 11 15 Ambient wet bulb temperature C 2 22 C 24 26 inlet outlet water 35 29 45 30 35 30 45 30 35 30 45 31 Kw Kw KW Kw KW Kw 138 198 215 268 271 302 376 406 453 577 574 634 714 769 837 905 1043 1099 1147 1268 1428 1538 1540 1756 1868 2085 2198 977 1084 1313 1901 2007 2306 2434 2691 2848 3555 3749 4013 4612 4868 5380 5989 6247 6439 7110 7497 Power electric heater KW 3 ow o 0 o o m YH YH DY aaa kf A A A A 0 Oo Power electric heater KW 4 RR BR OR A B oR BR
13. ee the periodical start up of fan s in order to prevent the excessive drying of bearings and gaskets Bearings Some of the bearings used for the shaft of centrifugal fans are life lubricated and do not require additional lubrication under normal conditions If the bearings have a lubrication connection proceed as follows Initial start up normally no lubrication is required since the bearings have been lubricated at the factory prior to shipment However if the unit has been stored at the jobsite for more than one year bearings should be purged with new grease before initial operation Seasonal start up purge the bearings with new grease prior to start up Operation lubricate bearings after every 2 000 hours of operation or once every six months whichever comes first Seasonal shut down purge bearings with new grease prior to any prolonged storage or downtime When lubricating purge the old grease from the bearing by gradually adding grease until a bread of new grease appears at the seal on the underside of the bearing We suggest to use grease with the following characteristics field of temperatures from 20 C to 110 C kinematics viscosity of the base oil 190 mm2 s consistency NLGI 2 If the bearings are noisy or vibrate or reach high temperatures they should be serviced or replaced Painting Thoroughly check all the painted parts of the unit to detect possible areas where rust or corrosion has occu
14. enance operations should never be accomplished when the unit is in operation Be sure that the machine has been disconnected before entering the dangerous area or inside the machine Caution The hot and humid ambient may favour the growth of micro organism For specific recommendations consult a specialised water treatment supplier Caution The recirculating water system may contain chemicals or biological contaminants which could be harmful if inhaled or ingested Accordingly personnel who may be exposed directly to discharge airstream and associated drift mists generated during operation of the water distribution system and or compressed air should these be used to clean portions or components of the recirculating water system should wear respiratory protection equipment approved for such use by local occupational health and safety authorities Location Each cooling tower should be located and positioned to prevent the introduction of discharge air into the ventilation system of the building on which the tower is located and of adjacent buildings Biological control Blow down with or without chemical treatment for scale and corrosion control is not adequate for control of biological contamination The growth of algae slimes and other micro organisms if unchecked will reduce system efficiency and may contribute to the growth of potentially harmful micro organisms in the recirculating water system Accordingly a biocide treatment
15. er inlet and outlet joints care must be taken not to damage panels painting and sealing wet deck fill and nozzles For this put wet rags at joints base The tower must be placed on the highest point of the water circuit to avoid emptying the system when the pump is stopped If this is not possible a check valve on the water outlet and an air relief valve must be fitted Water circulating pumps must always be placed at a lower level than the water one Water pipes must be properly sized and installed so that they can normally expand In installations with two or more towers care must be taken to balance pressure drops in the various pipe branches and level equalisation pipes must be connected to sumps Make up pressure drop must be at maximum of 2 Bar Maximum operating pressure at water inlet connection must be 0 8 Bar Higher pressure values may seriously damage internal distribution system of the machine Before to tighten the bolts and nuts of the flanged connection test the alignment and the flatness of the flanges It is also advisable to put shut off valves before each tower to enable separate maintenance of each tower these valves are also useful to even out differences in water flow to each tower As far as electrical connections are concerned the following rules apply Fan motors up to 7 5 kW size are suitable for electrical connection with direct start For bigger size fan motors soft start systems as delta star must
16. er level in the sump is much lower than the overflow The water intake in the sump drags air cavitation CAUSE No tension to the motor The motor is blocked The fan is blocked The transmission belts Unbalanced fan impeller Loosened keying Backward rotation REMEDY Fix the electric connections Clear the motor Clear the fan TJ the keying on the shalt as to obtain the correct ans the casing or is without The impeller strikes against the Repair casing impeller Loosened keying Fix the keying Damaged ball bearings If the Repair the motor noise is magnetic faulty motor One phase is missing Faulty motor Electric supply not correct Overload Insufficient tensioning Check the connection Repair the motor Check the electric supply Check the transmission The circulating water is scaling Clogging Partial scaling or clogging The water distribution is Check the nozzles to obtain a Probable scaling of the fill or Totally or partially replace the reduced air flow from the fans fill Check the fans Reduce the air flow Check the drift eliminators Excessive air flow Eliminators incorrectly placed Damage to sealing during Replace water tightness in transportation and or accordance to the instructions installation Make up ball valve too opened Check the ball valve Make up ball valve too closed Check the ball valve Too low water
17. ill 1200 33 33 54 54 54 39 60 60 66 108 108 108 114 114 114 162 162 Drift eliminators 1045 12 12 12 12 12 18 18 18 24 24 24 24 30 30 30 36 36 Water filter 1 1 2 2 2 2 2 2 2 Make up ball valve 1 1 1 1 1 1 1 1 1 Gasket for inspection door 2 2 2 2 2 2 2 2 2 Inspection door 2 2 2 2 2 2 2 2 2 Door hand wheel 8 8 8 8 8 8 8 8 8 gt gt gt gt AVN 5 5 5 5 5 5 a 2 2 2lo A 2 2 2 2 o o P E jor o wm 315 gt B 2 2 2 a AB 2 2 2 2 AB 2 2 2 2 SETTING OUT OF SERVICE AND DISMANTLING In case the unit for wear irreparable damage or other reasons must be set out of service and dismantled it will be advisable to separate the non metal parts like rubber plastic etc before sending it to scrapping The non metal parts are mainly the heat exchange fill in PVC the water distribution headers water nozzles transmission belts and the float valve of the water make up valve Electric motors of fans have the winding in copper wire for which it is advisable a separate scrapping Sal
18. in the right direction if the drift eliminators are of the metal type and they have been removed for any reason during transportation and installation check that they are replaced with the air outlet edge oriented opposite to the fan section see Fig 8 KAA N V Figure 8 21 The float valve on the make up water connection is adjusted at the factory but it may be necessary to check for proper operation The float valve should be completely closed when the level in sump is approximately 20 mm below the overflow connection Conversely the water level should not be too low as this should enable air to be drawn into the pump which would cause rapid wear of the impeller Moreover the insufficient water sprayed over the fill would cause reduced efficiency and rapid scaling During the initial period of operation foreign matter deposited in the sump may reach the nozzles It is therefore advisable to frequently clean the nozzles during the initial period of operation as irregular or reduced sprays may reduce the efficiency and increase scaling 22 OPERATION It is important that attention is given to quality of water to avoid build up of scale which reduces the heat exchange and consequently the equipment efficiency As water is sprayed over the fill a portion of it evaporates thus increasing the salts concentration in the remaining portion A purge connection is supplied w
19. ith each unit which allows to increase the quantity of fresh water coming into the sump This dilutes the salts reducing the scaling effect of water The purge pipe is complete with a valve that should be regulated in accordance with the water hardness As the quality of water is so important for the operation of an evaporative cooling unit we strongly recommend to contact a specialised company asking for a suitable water treatment Reputable water treatment companies are perfectly aware of the problems connected with evaporative cooling equipment and will suggest the proper treatment Please note that the warranty for TMR units is valid only for operation with water of very good quality 23 MAINTENANCE Due to their location normally in the open air cooling towers although being relatively simple machineries are usually subject to very adverse operating conditions The TMR towers have an excellent protection from atmospheric corrosion since they are fabricated from hot dipped galvanised steel and then coated with baked on epoxy paint The electric motors and bearings are water tight and specially constructed for outdoor operation These features reduce greatly the need for maintenance but inevitably to extend good performance of the tower through the years some maintenance service operations must be effected regularly Listed below you will find the main maintenance operations that must be regularly effected Please note that
20. level Check the ball valve 28 COMPONENTS LIST Models TMR U M 09 12 13 14 16 18 21 24 28 31 34 38 41 44 51 56 61 66 70 76 83 88 94 103 109 122 132 Electricmotor Complete fan 15 1 Complete fan 15 2 Centrifugal impeller 18 25 Centrifugal impeller 18 40 Fan pulley Motor pulley Impellers shaft 25 Impellers shaft 40 2 fai im r9 ro TO rel mima pole m m 8 m ENE a 2 polpolon a 2 polpolon a 2 polpolon Impellers shaft 40 3 Supports with bearings 25 Supports with bearings 40 Transmission belts co ml co mol mI aye ml RI Rl ml RI ESSET ESSET mi Secondary header 85 foo Po m N N l Secondary header 115 Secondary header 175 Secondary header 235 Secondary header 295 Secondary header 355 Gasket for header Nozzles type 20 Wet deck fill 900 Wet deck fill 1200 6 6 Col ul NE w w w w w w Po N o o w N o o w 1 ojoj Aa N ER amp i n o n o m R O la Co 1 48 48 48 60 60 60 72 72 16 32 32 20 40 40 48 48 12 12 12 12 15 15 15 18 18 gt gt gt gt
21. minal box and to the fastening of the cover of the same terminal box A bad fastening of the cable presser and or of the cover of the terminal box would make the motor subject to water infiltration which would seriously damage the bearings and the windings Even if the following are only general rules of good technique we wish to remind that after having connected the motor it is important to check that 1 the connection is in accordance with the electric characteristics with which the motor should operate and the rotation is correct 2 the cable presser is perfectly tightened preventing any water infiltration 3 in case the connecting box has a number of holes for wires the ones that are not used should be tightly closed with an hermetic plug 4 while reassembling the cover of the terminal box the gasket should be correctly placed so as to ensure perfect tightness Do not operate the unit if the above conditions are not accomplished electrical connections must be effected according to local regulations Caution If the fan motor is controlled by an inverter frequency variator please pay attention on its programming to avoid the operation at critical speeds 20 START UP Each unit is tested at the factory before shipment however the following items should be checked prior to initial start up if the float valve has been secured for shipment free it check that the fans are free to rotate
22. nd press gasket onto base top flange Remove paper on the other side and drill holes in the gasket in correspondence of the edge holes Place the bead sealer over the tape sealer in the area between the holes and the inside of the unit see Fig 6 Lift according to the instructions of paragraph Lifting the upper section of the unit and place it in position with the help of metal pins into the holes of upper and lower flanges If the holes do not correspond it means that either the lower or the upper section of the unit are not flat this may depend by the support platform or by the way of hoisting the upper section while assembling it In some cases if it proves to be difficult to obtain perfectly flat surfaces it may be more convenient to re drill some of the holes In this case be sure to previously remove the gasket from the holes It is necessary to perfectly centre all the holes before lowering the upper section Fig 7 and 7 A Push bolts into position and tighten Connect the plastic by pass pipe to the manual valve on the over flow connection If the tower is supplied complete with silencers on the air outlet their reassembly must be effected following the above mentioned instructions
23. operly spraying Belt tensioning Belt tensioning is needed the first time after about 12 hours of operation and monthly after that Electric motors are installed over platforms fastened by bolts that must be loosened for tensioning belts The correct tension can be checked by depressing each belt at the central point between the pulleys the deflection should be between 10 and 15 mm depending on the distance between pulleys and applying a moderate effort If the unit has a seasonal operation at the end of the season it is advisable to completely loosen the belts which will increase their life If belt replacement is necessary purchase spares according with the type of belt stamped on the nameplate of the unit Caution Over tensioning of belts may damage the motor and fan bearings while loose belts will slip reducing equipment efficiency and increasing belt wear Check bleed water The bleed water pipe is complete with a valve that should be regulated according with the conditions of water Db Check vibrations 10 Any fault with the fan both centrifugal and axial and or electric motor will result in vibrations of the unit If this occurs immediately stop the unit and check the reasons of vibrations This may save serious damage to the unit Also the water recirculating pump should be checked for vibrations Periodical fan operation If the unit is not operating for long periods of time it is necessary to fores
24. rred In this case clean the part with a metal brush and apply a rust treatment product such as Ferox of Arexons Noverox etc These products will convert rust into inert salts follow manufacturer instructions 26 After two or three days remove product residue if any and apply good quality enamels compatible with the existing one Normal protection units have a final coating with epoxy enamel while Decsaprot double protection units have a final poliuretanic coating 11 Sump draining Units with seasonal operation should be drained at the end of the season to avoid freezing If the unit is shut down during the winter season it is advisable to protect it with a water tight covering IDENTIFICATION DATA TMR units have a nameplate indicating the model and the serial number For any information or spare parts requirements it is necessary to refer to them 27 FAILURE The fans do not run The fans vibrate The fans operate but blow insufficient air Clanging fans The motor is noisy The motor is superheated The belts slide at start up or during operation One or more nozzles do not spray One or more nozzles spray irregularly The evaporating fill is uniformly scaled The evaporating fill is scaled in some areas The water insufficient cooling is Water carryover at the drift eliminators Water leakage panels connections along the Excessive water bleeding from overflow The wat
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