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Airwell CWP-CO 30 [39/42] Troubleshooting
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Page 38
Troubleshooting
Anomaly Cause Operation
One or both compressors
are not working.
Breaking of the electric circuit. Check the electric circuit and detect
any ground dispersions and short cir-
cuits. Check fuses.
Intervention of the HP pressure
switch.
Reset the pressure switch and the con-
trol panel and restart the appliance.
Identify and remove the cause that en-
abled the pressure switch.
The fuse of the control circuit is bro-
ken.
Check for ground dispersions and
short circuits. Replace fuses.
Loosened terminals. Check and tighten.
Halt caused by thermal overload of
the electric circuit.
Check the operation of check and
safety devices. Identify and remove
the cause.
Wrong wiring. Check wiring of check and safety de-
vices.
The line voltage is too low. Check voltage. If problems regard the
system, solve them. If they are caused
by the distribution network, inform the
Energy Distributor.
Short-circuit of the compressor’s mo-
tor.
Check the continuity of the winding.
Seized compressor. Replace the compressor.
Identify and remove the leak.
Insufficient charge
Refill.
Failure of the pressure switch. Replace the pressure switch.
Failure of the pressure switch. Check the operation of the pressure
switch, replace it if defective.
The delivery valve is partially
closed.
Open the valve and replace it, if
faulty.
Activation of the LP alarm,
stop of the unit.
Gas leak.
Activation of the HP alarm,
stop of the unit.
Substances with condensable gases
in the circuit.
Drain the circuit.
The liquid line is too hot. Insufficient charge. Identify and remove the cause of the
loss of charge and refill.
Frosting of the liquid line. The valve of the liquid line is partial-
ly closed.
Check that valves are open.
The liquid filter is clogged. Replace the cartridge or the filter.
Manuale CWP 4.11.2005 11:56 Pagina 38
Содержание
- Cwp co cwp rc cwp hp 1
- Control system 2
- Dismantling demolition and scrapping 2
- English 2
- Foreword 2
- General description 2
- Installation 2
- Maintenance 2
- Safety 2
- Spare parts 2
- Start up 2
- Table of contents 2
- Technical data 2
- Transport lifting and positioning 2
- Troubleshooting 2
- An introduction to the manual 3
- Emergency stop normal stop 3
- Foreword 3
- Introduction 3
- Warranty 3
- Definitions 4
- English 4
- Foreword 4
- Safety 4
- Access to the unit 5
- General precautions 5
- Precautions against residual risks 5
- Safety 5
- English 6
- Precautions during maintenance operations 6
- Safety 6
- Aus outlet 7
- Ein inlet 7
- Entrée entrata 7
- Safety 7
- Safety labels 7
- Sortie uscita 7
- English 8
- Safety 8
- Safety regulations 8
- Safety 9
- English 10
- Safety 10
- Anchoring 11
- Inspection 11
- Storage 11
- Transport lifting and positioning 11
- Unit handling 11
- Connection diagram 12
- English 12
- External hydraulic circuit 12
- Flow meter installation 12
- Installation 12
- Positioning of the unit 12
- Vibration isolators 12
- Hydraulic connection of the condenser 13
- Installation 13
- Electrical connections 14
- English 14
- Hydraulic connection 14
- Installation 14
- Power supply 14
- Preliminary check 15
- Start up 15
- Checking the operation 16
- Delivery to the customer 16
- English 16
- Start up 16
- Antifreeze function 17
- Control system 17
- Cwp control system 17
- Temperature controller 17
- Μchiller 17
- Control system 18
- English 18
- Summary of the key functions 18
- The meaning of each key in the different modes is summed up in the table below 18
- Control system 19
- Heat exchanger heater thermostat 19
- High pressure control 19
- Low pressure control 19
- Pressostatic valve kit optional 19
- Compressors 20
- Condenser except for cwp rc 20
- English 20
- Evaporator 20
- General description 20
- General specifications 20
- Introduction 20
- Refrigeration circuits 20
- Switchboard 20
- Cwp hp refrigeration circuit 02 to 05 21
- Cwp rc refrigeration circuit 02 to 05 21
- Cwp refrigeration circuit 02 to 05 21
- General description 21
- Page 20 21
- Cwp hp refrigeration circuit 06 to 21 22
- Cwp rc refrigeration circuit 06 to 21 22
- Cwp refrigeration circuit 06 to 21 22
- English 22
- General description 22
- Page 21 22
- Cwp hp refrigeration circuit 25 to 35 23
- Cwp rc refrigeration circuit 25 to 35 23
- Cwp refrigeration circuit 25 to 35 23
- General description 23
- Page 22 23
- English 24
- Page 23 24
- Pressure drops 24
- Technical data 24
- Page 24 25
- Technical data 25
- English 26
- Page 25 26
- Technical data 26
- Page 26 27
- Technical data 27
- English 28
- Page 27 28
- Technical data 28
- Page 28 29
- Technical data 29
- Electrical data 30
- English 30
- Page 29 30
- Technical data 30
- Condenser inlet 1 1 4 female sizes 02 to 09 1 1 2 female sizes 15 31
- Condenser outlet 1 1 4 female sizes 02 to 09 1 1 2 female sizes 15 31
- Cwp cwp hp cwp rc 02 to 15 31
- Evaporator inlet 1 1 4 female sizes 02 to 09 1 1 2 female sizes 15 31
- Evaporator outlet 1 1 4 female sizes 02 to 09 1 1 2 female sizes 15 31
- External source water inlet 31
- External source water outlet 31
- Overall dimensions 31
- Page 30 31
- Technical data 31
- Water leaving to installation 31
- Water return from installation 31
- Condenser inlet 1 1 4 female 32
- Condenser outlet 1 1 4 female 32
- Cwp cwp hp cwp rc 18 21 32
- Discharge line 1 1 8 32
- English 32
- Evaporator inlet 1 1 4 female 32
- Evaporator outlet 1 1 4 female 32
- For cwp cwp hp 32
- For cwp rc 32
- Liquid line 7 8 32
- Page 31 32
- Technical data 32
- Condenser inlet 2 female 33
- Condenser outlet 2 female 33
- Cwp cwp hp cwp rc 25 to 35 33
- Discharge line 1 5 8 33
- Evaporator inlet 2 female 33
- Evaporator outlet 2 female 33
- For cwp cwp hp 33
- For cwp rc 33
- Liquid line 1 1 8 33
- Page 32 33
- Technical data 33
- English 34
- Page 33 34
- Service spaces 34
- Technical data 34
- General requirements 35
- Maintenance 35
- Planned maintenance 35
- Compressor 36
- Condenser 36
- Dehydrating filter 36
- English 36
- Maintenance 36
- Refrigerant charge 36
- Sight glass 36
- Evaporator 37
- Maintenance 37
- Thermostatic expansion valve 37
- English 38
- Troubleshooting 38
- Troubleshooting 39
- English 40
- Oil for compressors 40
- Spare part list 40
- Spare parts 40
- Wiring diagrams 40
- Dismantling demolition and scrapping 41
- Generalities 41
- Itelco industry 42
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