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Daikin Applied (UK) Ltd.

REV A

– PAGE 9. SECTION 11 ADDED. 11/03/14

Page 35 of 37

Symptom

Causes

Remedy

Failure of fan to start

Electrical supply fault to fan

Check voltage at motor terminal box
whilst observing all safety precautions
Check starting gear and fuses
Check motor

Low volume after
start up

Fan rotating in wrong direction

Reverse any two incoming supply lines
to the starters or inverter drive

Dampers in system not set properly

Ensure system correctly balanced on
commissioning

Filter blocked above recommended
pressure drop level

Change filters

– the complete bank not

individual filters

High external static pressure

Consult client

Fan rotating below correct speed due to
belt slip

Check drive belt tension

Excessive vibration
from unit

Fan impeller out of balance

Check for build up of dust on impeller
blades
Consult manufacturer

Drive belts incorrectly aligned /
tensioned

Check drive belt alignment / tension

Anti vibration mounts ( AVM’s ) not set
correctly

Check working height of AVM’s Failure
to cure fault signifies suspect spring

Excessive noise from
unit

Bearing failure on fan or motor

Check bearings

Fan impeller fouling inlet cone

Check clearances

Drive belts incorrectly tensioned

Check belt tension

Reduced drive belt
life

Pulleys out of alignment

Check pulley alignment

Drive belts incorrectly tensioned

Check belt tension

Incorrectly matched belts

Replace with complete set of matched
belts

Water present in
cooling coil drain
pans

Drain traps blocked

Check for obstruction by removing drain
traps

Drain traps not primed

Prime drain traps

Incorrect size / type drain traps

Check drain traps size / type

Excessive water
inside unit

Coil leakage

Identify source of leak and rectify or
consult manufacturer

Transmissions

Small cracks on V-
Belt sides and base

Shortage of belt tension. Excessive
heat and/or chemicals

Replace complete set of belts. Re-
tension. Identify source of problem

V-Belt swelling or
softening

Excessive contamination by oil, certain
cutting fluids or rubber solvent.

Replace complete set of belts. Eliminate
source of contaminant.

V-Belts whipping
during running

Incorrect tensioning

Re-tension belts and pulleys

Invalidation of Guarantee

Содержание Easdale 25

Страница 1: ...REV A PAGE 9 SECTION 11 ADDED 11 03 14 Page 1 of 37 Installation Operation and Maintenance Instructions For The Easdale 25 50 Air Handling Units...

Страница 2: ...missioning and Testing Page 16 Drive Belts Page 17 18 Belt Tensioning Instructions Pulley Alignment Instructions Page 21 22 Maintenance Procedures Component Installation Maintenance Page 23 Fans Page...

Страница 3: ...o be used It is manually isolated from the mains supply before any work is carried out DO NOT enter the unit while the fans are running Electrical equipment is earthed to comply with all I E E Regulat...

Страница 4: ...study has been made of this manual This manual deals in detail with shipping installation commissioning and servicing and must be strictly adhered to Wherever any maintenance or work is done within t...

Страница 5: ...connections have been isolated and isolators padlocked in the OFF position Safety Information continued Before starting the Air Handling Units ensure that all access doors and panels are closed and cl...

Страница 6: ...ly supplied complete with an integral channel base Should these not be required e g in the case of stacked units then the sections will be shipped on wooden pallets Upon receipt of equipment a visual...

Страница 7: ...n wooden pallets that they are left in place until the units have been correctly sited This will help prevent site damage and will aid handling If this recommendation is not adhered to then it is not...

Страница 8: ...ctions must remain level during lifting or manhandling Under no circumstances should they be tilted onto their side 6 If sections are either too heavy or too wide to use lifting bars then the channel...

Страница 9: ...arallel to each other and that there is contact with each face of the two sections 5 Use an access door if possible to gain access to the joint for joining the two sections together Refer to the Secti...

Страница 10: ...ti vibration mounts which have been factory installed To prevent damage to these during transport temporary restraints are fitted to the fan base inside all fan sections For details refer to drawing A...

Страница 11: ...otor drive must be rotated by a third of a turn Failure to do this can invalidate the Daikin Applied UK Ltd warranty Unit Interior Surfaces If ducting is not connected to the unit it is essential that...

Страница 12: ...ing of anti corrosion grease or other anti corrosion agent on all the parts that may be subject to rusting Care must be taken to ensure that the storeroom is always dry and well ventilated whilst the...

Страница 13: ...ns The sizes of the cables and contactors must be suitable for the load carried A 240v AC supply is required for each light switch fuse protection by others Motor connection details are contained with...

Страница 14: ...anti vibration mounts and flexible connections allow the fan to move freely and that movement is not constrained by any cabling etc 6 Check that the pipe work to the coils is correctly connected and t...

Страница 15: ...may be necessary to start the fan with the access door open or side panel removed Strict attention to personal safety must be adhered to at all times All work must comply with the Health and Safety a...

Страница 16: ...the motor to twist round It is recommended that a close inspection be performed after the unit has been running for approximately 7 days from original start up A check should be made to ensure 1 The d...

Страница 17: ...5 kg SPA 80 132 mm 2 5 3 6 kg 140 200 mm 3 6 4 6 kg SPB 112 224 mm 4 6 6 6 kg 236 315 mm 6 6 8 7 kg SPC 224 355 mm 8 7 11 7 kg 375 560 mm 11 7 15 3 kg Belt Tensioning Procedure Using a Belt Tension I...

Страница 18: ...force to the kilogram force value in the table above If a Belt Tension Indicator is not available a spring balance and rule will suffice IMPORTANT After the drive has been running for approximately fo...

Страница 19: ...electrically isolated before any panel is removed e g fan control panels electric coils etc 2 The fan has stopped rotating prior to anyone entering the unit At least two 2 minutes after switching off...

Страница 20: ...nvironment in which the unit is used Failure to carry out regular maintenance will result in poor performance in terms of unit and filter efficiency and could lead to early and costly breakdowns Adequ...

Страница 21: ...re originally supplied with the unit The new belts should be tensioned and the belt guard screen where provided must be replaced 3 Check filter pressure drops and replace filters as necessary It is re...

Страница 22: ...Alvania R A Annual Checks 1 Check coils to ensure the fins are not blocked or have become dirty Fins should be cleaned using a brush and a vacuum cleaner Failure to keep a coil clean will result in lo...

Страница 23: ...tored in a clean dry area and the fan shaft should be rotated at least every two 2 months to minimise bearing damage If the fan is in storage for six 6 months or more then the bearings should be compl...

Страница 24: ...ipped with sufficient grease for a long operating period If re lubrication is needed using a low pressure hand operated grease gun pump in clean recommended grease until the new grease appears at the...

Страница 25: ...e nuts should be checked with fingers If they are loose tighten them down lightly with a spanner 9 Test the high temperature cut out This check is to be performed as follows a Make a note of the prese...

Страница 26: ...le drain connection to be connected to an appropriate trapping system Care must be taken to ensure that the correct type of drain trap is used depending on whether it is positive or negative air press...

Страница 27: ...s Any pipe movement caused by expansion or contraction must be absorbed by flexible joints Coils located at high points of the system should be regularly vented otherwise coils may become air locked c...

Страница 28: ...air leaving face of the coil Alternatively the coil can be washed down with a mild solution of detergent and water after which the coil should be thoroughly rinsed with clean water The power supply m...

Страница 29: ...c pressure in the coil while as much as 75 of full condensate load has to be handled by the steam trap This is especially important for coils exposed to outside air since sub atmospheric conditions ca...

Страница 30: ...t is then pumped to the overhead return Traps must be designed to operate at maximum pressure at the control valve inlet and sized to handle the full condensate load at a pressure differential equal t...

Страница 31: ...age can be cleaned as follows Remove dust and fibres with a soft long haired brush or with a vacuum cleaner Take care when cleaning with compressed air that the exchanger package is not damaged Note K...

Страница 32: ...g of the damper as this may affect the damper mechanism Ductwork must be independently supported and should not be left to hang from the damper Sealing should be in the form of a neoprene strip Ensure...

Страница 33: ...xceptions Synsafe RAVO F7 Bag 170 Synsafe RAVO F8 Bag 215 Synsafe RAVO F9 Bag 275 Final Stage Hepa Filter H10 H13 400 Washable Panel Filters Maintenance is generally as per disposable filters except w...

Страница 34: ...ifier section the 1 BSP male drain connection has to be connected to an appropriate trapping system Refer to the GA drawing for location of the drain connection Care must be taken to ensure that the c...

Страница 35: ...of AVM s Failure to cure fault signifies suspect spring Excessive noise from unit Bearing failure on fan or motor Check bearings Fan impeller fouling inlet cone Check clearances Drive belts incorrect...

Страница 36: ...otify Daikin Applied UK Ltd of equipment damaged on receipt in writing within seven 7 days Failure to run equipment within the design specifications as notified at the time of order Modifications to d...

Страница 37: ...ble Foam Filled Panels Landfill Sheet Steel Recycle Motors Recycle or Landfill Corners Recycle Coils Recycle Heatcube Plastic aluminium Recycle Flexible Connection Landfill Filters Dirty Landfill AVM...

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