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Air Handling Unit Installation, Operation And Maintenance Instructions

www.doguhvac.com

33

CAUTION:

For lubrication of bearings refer to the recommendations of fan and motor manufacturers.

12- Troubleshooting

Before checking the fan system, it will be necessary to shut down the fan. During inspection, the unit must
be isolated electrically and all disconnect switches and other controls must be locked in the “off” position.
Also, a prominent “DO NOT START” sign should be placed on control panel.

To find out the problem is an important step to correct it. By following the procedures outlined in this
section, cause of the problem should be found.

Procedure for troubleshooting:
a) Look at the troubleshooting chart to find the problem. Check probable causes.
b) If the cause of the problem can not be found proceed through the “system checklist.
c) If the problem still can not be solved, it is recommended to contact the “unit manufacturer”

System checklist

A systematic check of items listed below may identify the problem. See that:
a) Impeller rotation is correct
b) Pulleys are aligned
c) Belts are not loose or too tight
d) Belts and/or pulley are not worn.
e) Flow surfaces of fan (impeller blades, housing and passages between inlets) are clean.
f) Impeller and housing are not damaged.
g) Coils, filters, ducts are clean.
h) Fan outlet connections are correctly designed and installed.
i) Variable inlet vanes are synchronised. If inlet vanes are not synchronised, there will be an unbalance flow
between inlets causing thrust on bearing and low performance.
j) Inlet vanes are correctly positioned for the designed operating conditions
k) There is no leak in the unit and ductwork. Some common leak sources are access doors, coil, duct joints,
fan outlet connections etc.

If the cause of the problem still can not be found, consult air handling unit manufacturer. Manufacturer
may need following information

a) Complete drawings including unit location, ductwork detail, model and size of the unit.
b) Measured and design performance figures.
c) System design calculations
d) Measured fan performance figures such as fan static pressure, air volume, current drawn, fan speed, air
temperature and altitude etc.

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Содержание FourSeason KKS 062 - 046

Страница 1: ...AIR HANDLING UNIT INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS is a registered trademark of Dogu Iklimlendirme A S ...

Страница 2: ... market with Four Season brand Dogu HVAC Systems which is in business within 45 000m open area with 2 factory has 120 different types of products It brings new products to the sector producing Make up Kitchen Hoods Laminar Flow Ceiling One Piece Square Ceiling Diffuser Our R D journey started in 2004 with the first project of producing Make up Kitchen Hood is followed by producing dozens of other ...

Страница 3: ...type is MODELS KKS 062 046 KKS 062 062 KKS 093 062 KKS 124 062 KKS 093 093 KKS 124 093 KKS 155 093 KKS 124 124 KKS 155 124 KKS 186 124 KKS 155 155 KKS 186 155 KKS 217 155 KKS 186 186 KKS 217 186 KKS 248 186 KKS 217 217 KKS 248 217 KKS 279 217 KKS 310 217 KKS 248 248 KKS 279 248 KKS 310 248 KKS 341 248 KKS 403 248 KKS 465 248 KKS 527 248 KKS 589 248 Air Handling Unit Installation Operation And Main...

Страница 4: ...NS 20 6 6 ELECTRIC HEATER 20 SAFETY 20 7 1 USE OF THE UNIT 21 7 2 OBSERVATION OF WARNING SIGNS 21 7 3 STAFF TRAINING 21 7 4 PREVENT OF COMMON DANGERS AND RİSKS 22 7 5 RECOMMENDED SAFETY PRACTICES 22 7 6 THE HIDDEN DANGER 23 7 7 START UP 24 MAINTENANCE 25 BELT TENSION AND ALIGNMENT CONTROL 29 10 1 2 3 4 5 CHANGE OF PULLEYS 31 10 1 MOUNTING OF PULLEYS 31 10 2 REMOVAL OF PULLEYS 31 11 LUBRICATION OF ...

Страница 5: ... must be selected for this kind of applications so air handling unit manufacturer should be informed while ordering the unit 2 1 Operating Data 2 1 1 Ambient Temperature Air handling unit components are suitable to be used at ambient temperatures between 20 C and 40 C and altitude of 1000m Ambient temperature is the temperature of the air either inside or the outside of the unit If the unit is to ...

Страница 6: ... hand powered pallet truck or by forklift truck 4 Installation During final installation the requirements of EN 60204 1 do apply Before manufacturing air handling unit the client should check the conditions at site to ensure that access routes are adequate for both size and weight of the unit sections Air handling unit installation areas should also be checked There should be sufficient space arou...

Страница 7: ... 1 Connection Of Sections First of all transport the unit sections to the place where the unit will be installed Check the sealing strips for any damage Replace the strips if there is any damage The order in which the individual sections are assembled can be determined from assembly drawings and by following identification labels on each section For example A1 A1 A2 A2 In order to reduce vibration...

Страница 8: ...ame And then fit the intermediate cover lids 5 Connections 5 1 Ducting Connections Return air fresh air exhaust air and supply air should be connected to the unit by flexible duct connectors Air tightness should be maintained to achieve required air flow conditions Poor ductwork connections to the unit and incorrect size shape and arrangement of ductwork fittings can change airflow conditions 5 1 ...

Страница 9: ...n with an included angle of 7 20ºC should be used Fig 8 The ideal configuration is with parallel length of ducting prior to the expansion section allowing the air to become less turbulent before expanding Fig 9 The fan should never discharge directly into a duct with larger cross section Fig 10 The same criteria apply when discharging into a duct of smaller cross sectional area then the fan outlet...

Страница 10: ... made to change the direction of the airflow close to the fan discharge If this is necessary the installation should be carried out as in Fig 12 and ever as in Fig 13 A better solution is to have a parallel section of ducting prior to changing direction and it should be as long as can be accommodated Fig 14 FAIR BAD BAD Fig 13 Fig 14 ...

Страница 11: ...on at the lowest level on one side of the coil near downstream and water outlet connection on the same side but at high level near the upstream This arrangement drives any air in the system into the upper part of the coil where a manual air release valve should be fitted All coils connecting piping should be independently supported not to impose strain on the coil connections or circuitry All coil...

Страница 12: ...10 www doguhvac com Air Handling Unit Installation Operation And Maintenance Instructions ...

Страница 13: ...ctions in the package If the drain pipe is to be long drain line should be pitched with a gradient not less than 1 in 50 5 4 Electrical Connections Electric motor starters interconnecting cabling and any associated controls should be properly designed and selected to be suitable for the driven equipment or other electrical apparatus to be safe and to comply with the requirements of Electricity Sup...

Страница 14: ...l overload relay settings is done it should be checked that thermal overload relay works properly at normal operating conditions by operating motor on two phases Motor terminal markings The terminal markings of motors conform to the international standards Stator terminals are marked U V W and the neutral terminal N Please check data on the rating plate The voltage marked on the rating plate must ...

Страница 15: ...n with a frequency converter Rated speed of motor given on the rating plate should not be exceeded Maximum speed and maximum installed power values for fans given on pages 33 34 must not be exceeded Fan motor must be protected by PTC thermistor against overload and overheating Frequency converter must be overspeed protected Motor PTC thermistor must be wired to the frequency converter by shielded ...

Страница 16: ...hrough V belts are normally of the direct on line type However the customer or Electric Supply Authority may require motors above 3kW to be operated by a star delta starter to reduce starting current 14 www doguhvac com Air Handling Unit Installation Operation And Maintenance Instructions ...

Страница 17: ...Air Handling Unit Installation Operation And Maintenance Instructions www doguhvac com 15 ...

Страница 18: ...16 www doguhvac com Air Handling Unit Installation Operation And Maintenance Instructions ...

Страница 19: ...Air Handling Unit Installation Operation And Maintenance Instructions www doguhvac com 17 ...

Страница 20: ...sembly filter media roll is mounted on the dispensing unit taken along the guide channel through working section and locked to the rewind unit Differential pressure switch must be installed and connected to the control panel as shown on the circuit diagram Absolute filters are shipped in sealed carton boxes While assembly special care must be taken to ensure that each filter cell is properly seale...

Страница 21: ...densate Within The Coils And To Prevent Entry Of The Condensate In The Main Into The Coil By Trapping It Independently On A Coil Bypass Condensate Connections To The Steam Trap Must Be Of The Same Size As The Coil Outlet 6 4 Humidifiers Mat Type Or Steam Type Humidifiers May Be Assembled In The Unit For The Piping And Wiring Instructions Please Refer To Humidifier Manufacturer s Manual The supply ...

Страница 22: ...ill the provisions for the safety and health on the ground of Machinery Directive 98 37 EC and the European standards The CE mark appears on every identification label of the unit In spite of all that the unit can represent a danger if it is utilized or serviced not properly or by staff not sufficiently trained or if it is used not in conformity with general provisions For this reason we intend to...

Страница 23: ...amages at least once a week The user or operator never must dismount and deactivate safety devices if these would be removed for extra maintenance at the end of the operations they must be reinstalled For all operations of extra maintenance the power source must be locked out and protected against unlock by anybody else 7 2 Observation Of Warning Signs Warning signs should be placed on the unit sh...

Страница 24: ...ide a casing so accessibility to the fan is occasional or infrequent For this reason protective devices are offered as optional accessories only at specific user s request However as in case with other machinery involving moving parts common sense and caution will preserve personnel safety 22 www doguhvac com Air Handling Unit Installation Operation And Maintenance Instructions KIND OF DANGER OR R...

Страница 25: ...dropped objects from entering this area during installation and maintenance WARNING Access doors to a fan or duct system must not be opened when the fan is running or coasting to a stop After the unit has switched off the impeller continues to run for approximately 1 3 minutes The fan section is therefore still under pressure and the door must not be opened Power shall be locked out prior to acces...

Страница 26: ...e fan inlet Check that direction of impeller rotation is correct For this momentarily energize the fan and see the direction of rotation Check that fan and motor pulleys are aligned Check if the bearings need lubrication Check that fan and motor are fixed tightly One of the most common causes of motor failure with forward curved blade fans is excessive air flow due to overestimated system resistan...

Страница 27: ...ate if necessary Condition of filters Condensate and drain to see flow Operation of control devices WARNING Investigate any changes to the fan You may have more detailed explanation of problems and possible causes in troubleshooting section Consult your manufacturer or other qualified consultant for questions concerning changes observed during periodic inspections If excessive vibration is observe...

Страница 28: ...elt drive alignment and tension adjust if necessary Check the condition of float and valve in humidifier Check the condition of access door hinges and seals lubricate hinges if necessary Once in six months Check the motor running current Check fan and motor bearings for high temperature and noise Check function of control devices Clean condensate drain pan trap and drain line Check air washer circ...

Страница 29: ...d for any leakage Cleaning process can be done in 3 ways vacuum cleaning compressed air water or steam spray opposite to the air flow direction CAUTION During the application the water steam or air pressure should not exceed 5 bars To clean the cooling coil at the hygienic air handling units the coil can be reached from both sides by taking out the droplet eliminator from the service door by disas...

Страница 30: ...synthetic media in every two years New filters should be assembled in the right position that the rough and open side looks to the dirty air smooth face to the clean air side If there s gasket on the previous filter frame to achieve the necessary tightness do not forget to apply the same media absolutely same way on the new filter after renewal Other type of filters such as throw away media bag ab...

Страница 31: ... blades should be cleaned regularly The period changes according to the operating conditions and the air quality As cleaning media any de scaler available on the market can be used For the best cleaning process of the droplet eliminator at the hygienic air handling units it should be taken out from the unit and disassembled by unscrewing To clean the inner surface of the unit after necessary compo...

Страница 32: ...eason to properly adjust belt tension Excessive belt tension can create such a power demand as to actually overload a motor that otherwise would be quite adequate A belt should be just tight enough to avoid slippage 30 www doguhvac com Air Handling Unit Installation Operation And Maintenance Instructions Belt section SPZ SPA SPB SPC Small pulley diameter mm 56 to 95 1 3 to 2 0 100 to 130 2 0 to 2 ...

Страница 33: ...emble bushing and pulley by aligning semi threaded holes Insert the screws loosely Insert the key on shaft then slide pulley to desired position with screw heads to the outside Tighten screws evenly and progressively Never apply extreme tightening forces 10 2 Removal Of Pulleys Remove tightening screws Insert one of the screws in the semi threaded hole and tighten until bushing becomes loose on sh...

Страница 34: ...ng properties during operation Therefore it is necessary for grease to be replenished or renewed from time to time The grease used is always lithium soap type suitable for all tem peratures within the operating range Excess grease will cause the operating temperature to rise rapidly particularly when running at high speeds Therefore only the bearing should be completely filled whilst the free spac...

Страница 35: ...ow may identify the problem See that a Impeller rotation is correct b Pulleys are aligned c Belts are not loose or too tight d Belts and or pulley are not worn e Flow surfaces of fan impeller blades housing and passages between inlets are clean f Impeller and housing are not damaged g Coils filters ducts are clean h Fan outlet connections are correctly designed and installed i Variable inlet vanes...

Страница 36: ...ecessary Coil with insufficient face area Worn or damaged impeller Unbalanced impeller Foreign material in fan housing or inside the unit Change impeller Balance impeller Clean fan housing Vibrating ductwork Vibrating casing parts Stiffen ductwork Isolate vibrating parts properly Vibrating parts not isolated from building Obstruction in dampers registers grilles Leaks in casing and ductworks Sharp...

Страница 37: ...age Blockage in coil or pipes Thermostat failure valve motor failure Circuit valves are closed Thermostats should be adjusted Boiler power i s in adequate Pumping power is not sufficient Pipe sizing is not correct Blockage in coil Boiler plant is off Heating fluid is off or cold Heating mains is cold Heating fluid flow rate is low Filters are clean so low initial pressure differential High leakage...

Страница 38: ...cent to heater causes areas of uneven air velocity and overheating of casing Water treatment is insufficient Heater elements faulty Humidistat setting is not correct Water is not available in cylinder Safety cut out tripped Control fault Chilled water isolating valves are closed Cooling thermostat setting is high High pressure cut out disconnects Solenoid valve closed Low pressure cut out disconne...

Страница 39: ... 450L 450R 450K 450K1 500L 500R 500K 500K1 500K2 560L 560R 560K 560K1 560K2 630L 630R 630K 630K1 630K2 710K 710K1 710K2 800K 800K1 800K2 900K 900K1 900K2 1000K 1000K2 3 3 4 4 4 4 4 7 5 5 5 11 5 5 11 18 5 7 5 15 22 7 5 15 22 11 15 30 11 15 30 37 15 18 5 30 45 15 18 5 30 45 22 37 55 22 37 55 30 45 75 37 75 4200 4000 3800 3800 3400 3400 2800 3000 2500 2700 2100 2400 2400 1800 2000 2000 1600 1800 1800...

Страница 40: ...K1 500K2 560L 560R 560K 560K1 560K2 630L 630R 630K 630K1 630K2 710K 710K1 710K2 800K 800K1 800K2 900K 900K1 900K2 1000K 1000K2 2 2 3 3 4 4 4 5 5 5 5 7 5 5 5 7 5 11 7 5 11 15 7 5 15 22 11 15 30 11 15 30 37 15 18 5 30 37 15 18 5 30 45 22 37 55 22 37 55 30 45 75 37 75 6800 6000 6800 5800 6000 4600 5400 4000 4700 3500 4100 4500 3300 3800 4000 2700 3100 3500 2500 2800 3200 2100 2350 2650 2800 1950 2100...

Страница 41: ... T HLZ 450 HLZ 450R T HLZ 500 HLZ 500R T HLZ 560 HLZ 560T T HLZ 630 HLZ 630T T HLZ 710 T HLZ 710T HLZ 710T T HLZ 800T HLZ 800T T HLZ 900T HLZ 900T T HLZ 1000T HLZ 1000T 3 5 3 5 4 5 5 6 3 7 9 9 11 11 13 5 13 5 14 22 25 32 40 3 3 5 4 5 5 2 5 6 7 7 5 14 8 20 10 20 14 35 12 5 40 12 5 18 45 18 45 30 70 35 70 4250 4000 3800 3400 3000 2730 2200 1900 1700 1500 1300 1200 1000 750 850 750 650 600 7000 6200 ...

Страница 42: ...AF 500B TZAF 500T1 TZAF 500T2 TZAF 560B TZAF 560T1 TZAF 560T2 TZAF 630B TZAF 630T1 TZAF 630T2 TZAF 710B TZAF 710T1 TZAF 710T2 TZAF 800T1 TZAF 800T2 TZAF 900T1 TZAF 900T2 TZAF 1000T1 TZAF 1000T2 6 5 9 12 6 5 9 14 8 5 13 18 5 9 5 13 22 11 18 5 35 11 18 5 40 14 22 45 22 50 33 70 35 75 3000 3650 4000 2700 3200 3700 2400 2850 3300 2100 2300 2820 1950 2200 2650 1550 1700 2350 1370 1700 2100 1300 1800 13...

Страница 43: ...2AA60 1LA7 164 2AA60 1LA7 166 2AA60 1LA5 183 2AA60 1LA5 206 2AA60 1LA5 207 2AA60 1LA5 223 2AA60 1LA6 253 2AB60 1LA6 280 2AC60 1LA6 283 2AC60 0 18 0 25 0 37 0 55 0 75 1 1 1 5 2 2 3 4 5 5 7 5 11 15 18 5 22 30 37 45 55 75 90 1 4 1 3 1 2 3 4 1 1 5 2 3 4 5 5 7 5 10 15 20 25 30 40 50 60 75 100 120 2820 2830 2740 2800 2855 2845 2860 2880 2890 2905 2925 2930 2940 2940 2940 2940 2945 2945 2960 2965 2975 29...

Страница 44: ...4AA60 1LA5 207 4AA60 1LA5 220 4AA60 1LA5 223 4AA60 1LA6 253 4AA60 1LA6 280 4AA60 1LA6 283 4AA60 0 12 0 18 0 25 0 37 0 55 0 75 1 1 1 5 2 2 3 4 5 5 7 5 11 15 18 5 22 30 37 45 55 75 90 1 6 1 4 1 3 1 2 3 4 1 1 5 2 3 4 5 5 7 5 10 15 20 25 30 40 50 60 75 100 120 1350 1350 1350 1370 1395 1395 1415 1420 1420 1420 1440 1455 1455 1460 1460 1460 1460 1465 1470 1470 1480 1485 1485 0 42 0 56 0 76 1 03 1 45 1 8...

Страница 45: ...0 1LA5 207 6AA60 1LA5 223 6AA60 1LA6 253 6AA60 1LA6 280 6AA60 1LA6 283 6AA60 1LA6 310 6AA60 1LA6 313 6AA60 0 09 0 18 0 25 0 37 0 55 0 75 1 1 1 5 2 2 3 4 5 5 7 5 11 15 18 5 22 30 37 45 55 75 90 1 8 1 4 1 3 1 2 3 4 1 1 5 2 3 4 5 5 7 5 10 15 20 25 30 40 50 60 75 100 120 850 835 830 920 910 915 915 925 940 950 950 950 960 960 970 975 975 978 980 982 984 988 988 0 44 0 62 0 61 1 20 1 60 2 05 2 85 3 90 ...

Страница 46: ... 7 10 4 11 15 0 75 22 25 25 50 25 18 25 10 12 12 9 10 13 6 15 20 0 75 30 50 40 63 32 23 32 16 16 16 9 13 18 10 18 5 25 0 75 37 50 40 80 40 30 40 25 16 16 9 18 25 16 22 30 0 75 44 50 63 100 50 38 50 25 32 32 16 23 32 25 30 40 0 75 60 100 63 100 63 57 66 35 50 50 25 30 40 25 37 50 0 78 72 100 80 125 80 63 80 50 50 50 25 38 50 35 45 60 0 8 85 100 80 125 145 75 105 50 50 50 40 48 57 50 55 75 0 79 105 ...

Страница 47: ...A GÜVEN TEKNİK BEKİR YERLİKAYA 0 542 527 7878 ANTALYA REFSER LTD ŞTİ AHMET ÖZDERE Sinan Mah 1276 Sok Palmiye Apt No 4 2 Antalya 0 242 3120244 0 532 2128109 IZMIR MERIDYEN HAVALANDIRMA SABAHATTIN AKYAR 5854 Sk No 6 Karabağlar İZMİR 0 232 2651009 TABLE GUARANTEE PERIOD 2 YEARS PHYSICAL LIFE 10 YEARS Air Handling Unit Installation Operation And Maintenance Instructions www doguhvac com 45 ...

Страница 48: ...pirators The FOUR SEASON brand air handling units and celled aspirators we manufacture which list is given below are under our guarantee against defects in material and workmanship for two years from date of consignment for given conditions below The physical and technical faults which can occur due to failure to maintain devices good during storing them in worksite are out of our warranty scope A...

Страница 49: ...ON DATE DEPARTURE TO SERVICE DATE SOLUTION DATE 201 201 201 SERVICE SUPPLIED VEHICLE LICENSE PLATE NUMBER SERVICE PERSONNEL RECIPIENT COMPANY REPRESENTATIVE Service Type Transaction Done In Service DATE HOUR IN WARRANTY OUT OF WARRANTY SIGNATURE DATE SIGNATURE DATE OTHER Warranty Condition Description Of Solution Customer Feedback To Be Completed By Customer Suggestions For Improvements To Be Done...

Страница 50: ...ölgesi Tekeli Menderes İZMİR TURKEY Tel 90 232 799 02 40 Fax 90 232 799 02 44 with the brand name FOURSEASON complies with the essential requirements of the directives Machinery MD 98 37 EC Low Voltage LVD 73 23 EEC and the standards applied in order to verify compliance with directives EN 60204 1 1997 EN 292 1 2 1991 EN 294 1992 Date of Issue 26 04 2012 Name Seçkin Tuncer ERDOĞMUŞ Title General C...

Страница 51: ...Air Handling Unit Installation Operation And Maintenance Instructions www doguhvac com 49 NOTES ...

Страница 52: ......

Страница 53: ......

Страница 54: ...99 02 40 Faks 90 232 799 92 04 Istanbul Area Barbaros Mah Çigdem Sok No 1 Agaoglu My Office Kat 4 18 Atasehir Istanbul TURKEY Tel 90 216 250 55 45 Faks 90 216 250 55 46 Ankara Area Çetin Emeç Bulvarı 1065 Cad Eski 2 Cad 1309 Sok No B 4 Öveçler Çankaya ANKARA TURKEY Tel 90 312 472 11 45 Faks 90 312 472 11 46 09102015 ...

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