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Airwell AQL 100 [42/63] Probable cause remedy
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Page 41
English
Trouble Shooting
8 TROUBLE SHOOTING
The following table will give a detailed list of unit faults and remedies. Contact an Authorised Itelco-Clima
Service Centre for any other problem which can not be clearly ascribed to one of the cases listed in the table
and/or for any other need for technical assistance.
Fault
The unit operates continuous-
ly, but without cooling.
Hoar-frost is building on the
suction line.
The noise level is too high.
The compressor oil level has
decreased.
One or two compressors are
not working.
Low refrigerant charge.
The dryer filter is clogged.
Loss of efficiency in one or both circuits.
The thermal expansion valve is out of calibra-
tion.
Vibrating pipelines.
The thermal expansion valve is whistling.
Noisy compressor.
One or more than one oil or gas leaks from
the circuit.
The compressor is mechanically damaged.
Faulty oil heater.
Power supply interruption.
The high pressure switch has tripped.
The control circuit fuse has tripped.
Loose terminals.
The thermal switches intended to protect the
power supply have tripped.
Wrong electrical connections.
The line voltage is too low.
The compressor motor has short-circuited.
The compressor has seized.
Check the fuses of the control circuit and make sure the circuit
is neither grounded nor short-circuited. Replace the fuses, if
required.
Tighten the terminals.
Make sure the safety and control devices are properly work-
ing. Identify and eliminate what has caused the trip.
Check the electrical connections of the control and safety de-
vices.
Check the line voltage. Remove the problem if it is due to the
plant. Contact the power supply company if it is due to the
network.
Check the continuity of the motor windings.
Replace the compressor.
Top up the refrigerant charge.
Replace the dryer filter.
Check the compressor and replace it, if required.
Increase overheating.
Check the charge.
Secure the pipelines.
Check the anchorage of the pipelines.
Top up the charge.
Check the dryer filter and replace it, if required.
Check the state of the valves.
The bearings have seized: replace the compressor.
Make sure that the nuts intended to anchor the compressor
have been firmly tightened.
Identify and eliminate all leaks.
Contact an Itelco-Clima Authorised Service Centre.
Make sure the electrical circuit and the elements of the electri-
cal heater are properly working. Replace any defective com-
ponent.
Check the fuses of the supply circuit and make sure the circuit
is neither grounded nor short-circuited.
Reset the pressure switch from the panel and restart the unit.
Identify and eliminate what has caused the high pressure
switch to trip.
Probable Cause Remedy
Содержание
- Installation and maintenance manual p.1
- Aql aqh 20 130 p.1
- English p.1
- Air cooled water chillers and air to water reverse cycle heat pumps p.1
- Iom aqlh n gb p.1
- English p.2
- Preface p.4
- Manufacturer information p.4
- Warranty p.4
- Safety p.4
- English p.4
- Manufacturer information p.5
- Emergency stop p.5
- Manufacturer information p.6
- Safety labels p.6
- English p.6
- Material safety data p.7
- Manufacturer information p.7
- Page 6 p.7
- Refrigerant data p.7
- English p.8
- Page 7 p.8
- Manufacturer information p.8
- Page 8 p.9
- Manufacturer information p.9
- Lubricating oil data p.9
- Product description p.10
- General information p.10
- English p.10
- Accessories p.11
- Product description p.11
- Product description p.12
- English p.12
- Units aql 20 80 p.13
- Refrigeration circuits p.13
- Product description p.13
- Page 12 p.13
- Units aql 90 130 p.14
- Product description p.14
- Page 13 p.14
- English p.14
- Units aqh 20 80 p.15
- Product description p.15
- Page 14 p.15
- Units aqh 90 130 p.16
- Product description p.16
- Page 15 p.16
- English p.16
- Handling p.17
- Transportortion handling and stockage p.17
- Transportation handling and storage p.17
- Inspection p.17
- Transportortion handling and stockage p.18
- Storage p.18
- English p.18
- Installation p.19
- Installation site p.19
- Defrost water drainage only for aqh units p.19
- Installation of spring shock absorbers p.20
- Installation p.20
- English p.20
- Installation p.21
- External water circuit p.21
- Connect the water lines of the plants with the at tachments of the unit whose diameters and positions are shown by chapter 9 p.22
- Before filling the installation remove any impurity such as sand crushed stones and welding scales coating drops and any other material which might damage the evaporator p.22
- When two or several units are connected in paral lel to balance the load losses of the various cir cuits it is recommended to execute a reverse re turn connection see the diagram below p.22
- Water connections p.22
- Version with a pump p.22
- The water used to fill the circuit shall be treated in such as way that the ph will have the correct value p.22
- The attachments at the water inlet and out let shall be connected in compliance with the instructions which can be found on the labels in the proximity of the attachments p.22
- Page 21 p.22
- Legend s on off valves vg balancing valves p.22
- It is advisable to flush with disposable water by passing the exchanger to avoid clogging p.22
- Installation p.22
- English p.22
- Supplied material p.23
- Shock absorbers p.23
- Operating limits p.23
- Installation p.23
- Features p.23
- Accumulation tank kit p.23
- Installation p.24
- English p.24
- Storage kit 224 112 l for aql 40 50 aqh 40 dimensional data p.25
- Storage kit 112 l for aql aqh 20 35 dimensional data p.25
- Page 24 p.25
- Installation p.25
- Storage kit 294 147 l for aql aqh 90 100 aqh 90 dimensional data p.26
- Storage kit 294 147 l for aql 60 80 aqh 50 80 dimensional data p.26
- Page 25 p.26
- Installation p.26
- English p.26
- Storage kit 294 147 l for aql aqh 110 130 aqh 100 130 dimensional data p.27
- Page 26 p.27
- Installation p.27
- Electrical connections p.28
- Electrical supply features p.28
- Installation p.28
- English p.28
- Electronic board p.29
- Pump control relay p.29
- Page 28 p.29
- Installation p.29
- Electrical connections of the aql aqh 20 35 units with neutral p.29
- Antifreeze resistance control relay p.29
- Pump control relay p.30
- Page 29 p.30
- Installation p.30
- English p.30
- Electronic board p.30
- Electrical connections of the aql aqh 40 80 units with neutral p.30
- Antifreeze resistance control relay p.30
- Antifreeze resistance control relay p.31
- Pump control relay p.31
- Page 30 p.31
- Installation p.31
- Electronic board p.31
- Electrical connections of the aql aqh 40 80 units without neutral p.31
- Mors 103 hydrokit mors 8 hydrokit p.32
- Linea potenza 400 3 n 50 pe p.32
- Vac disponib per accessori max 40va p.32
- Interruttore remoto di marcia arresto p.32
- Unita in allarme n o spst max 2 a 250vac p.32
- Interblocco esterno consenso pompa esterna p.32
- Sezionatore p.32
- Installation p.32
- English p.32
- Selezione riscald raffredd p.32
- Electronic board p.32
- Selezione modalita notte o doppio setopoint p.32
- Electrical connections of the aql aqh 90 130 units without neutral p.32
- Scheda elettronica p.32
- Comune p.32
- Rele comando resistenza antigelo p.32
- Caldo freddo p.32
- Rele comando pompa p.32
- Antifreeze resistance control relay p.32
- Pump control relay p.32
- Parzializzazione forzata della capacita frigorifera p.32
- Page 31 p.32
- On off p.32
- Morsettiera bordo macchina collegamenti utente p.32
- Mors 14 hydrokit mors 8 hydrokit p.32
- Preliminary checks p.33
- Commissioning p.33
- Starting p.33
- Performance check p.34
- English p.34
- Delivery to the user p.34
- Commissioning p.34
- Electronic card control p.35
- Aql aqh control p.35
- English p.36
- Dip switches p.36
- Aql aqh control errata corrige p.36
- Aql aqh control p.37
- Sens menu sensors reading p.38
- English p.38
- Aql aqh control p.38
- Alar and log menus p.38
- Daily maintenance p.39
- Maintenance p.39
- General information p.39
- Refrigerant charge p.40
- Refrigerant air exchangers p.40
- Maintenance p.40
- Fans of the refrigerant air exchangers p.40
- English p.40
- Dryer filter p.40
- Compressors p.40
- Thermal expansion valves p.41
- Sight glass p.41
- Refrigerant circulating fluid exchanger p.41
- Maintenance p.41
- Probable cause remedy p.42
- Page 41 p.42
- English p.42
- Trouble shooting p.42
- The following table will give a detailed list of unit faults and remedies contact an authorised itelco clima service centre for any other problem which can not be clearly ascribed to one of the cases listed in the table and or for any other need for technical assistance p.42
- Trouble shooting p.43
- Probable cause remedy p.43
- Page 42 p.43
- Technical data p.45
- Page 44 p.45
- Aql aqh 90 130 standard water pump available head p.45
- Aql aqh 20 25 30 35 refrigerant water heat exchangers pressure drops p.45
- 100 90 p.45
- Technical data p.46
- Page 45 p.46
- English p.46
- Aql aqh 90 130 refrigerant water heat exchangers pressure drops p.46
- Aql aqh 40 80 refrigerant water heat exchangers pressure drops p.46
- Air temperature c p.47
- Working range in cooling mode working range in heating mode p.47
- Working range p.47
- Units aql aqh 20 130 r407c p.47
- Technical data technical data technical data p.47
- Page 46 p.47
- Leavig water temperature c leavig water temperature c p.47
- Page 47 p.48
- Noise levels p.48
- Models 20 25 30 35 40 50 60 70 80 90 100 110 120 130 p.48
- Model octave band central frequency hz p.48
- Italiano p.48
- High pressure transducer yes low pressure transducer yes p.48
- High pressure switch yes p.48
- Fans heat protection yes p.48
- English p.48
- Compressors heat protection yes p.48
- Water flow switch yes p.48
- Technical data p.48
- Sound pressure levels lp a db a p.48
- Sound pressure levels at 1 m distance according to iso 3744 sound levels applicable to all high discharge head units 90 130 p.48
- Sound power levels lw a db a p.48
- Safety devices p.48
- Units aql aqh 20 80 p.49
- Technical data technical data technical data p.49
- Page 48 p.49
- General characteristics p.49
- Units aql aqh 90 130 p.50
- Technical data technical data technical data p.50
- Page 49 p.50
- English p.50
- Page 50 p.51
- Electrical characteristics p.51
- Units aql aqh 20 80 p.51
- Technical data technical data technical data p.51
- Units aql aqh 90 130 p.52
- Technical data technical data technical data p.52
- Page 51 p.52
- English p.52
- Units aql aqh 20 130 p.53
- Technical data p.53
- Page 52 p.53
- Dimensional data p.53
- Units aql aqh 20 25 30 35 p.54
- Technical data p.54
- Page 53 p.54
- English p.54
- Technical data p.55
- Page 54 p.55
- Units aql 40 50 and aqh 40 p.55
- Units aql 60 70 80 and aqh 50 60 70 80 p.56
- Technical data p.56
- Page 55 p.56
- English p.56
- Units aql aqh 90 100 p.57
- Top view p.57
- Technical data p.57
- Page 56 p.57
- Front view side view p.57
- Units aql aqh 110 120 130 p.58
- Top view p.58
- Technical data p.58
- Page 57 p.58
- Front view side view p.58
- English p.58
- Technical data p.59
- Space requirements p.59
- The tables here below will list the wiring diagrams relevant for pack and non pack units with and without a neutral p.61
- The table here below will list the spare parts which are recommended for each unit for two years p.61
- The table here below will list the oils recommended for each model p.61
- Spare parts errata corrige p.61
- Spare parts p.61
- Relevant wiring diagrams p.61
- Recommended spare parts p.61
- Page 60 p.61
- Oils recommended for compressors p.61
- General information p.62
- English p.62
- Dismantling demolition and scrapping p.62
- Wesper s a s p.63
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