Iveco Daily. Manual — part 340
2
CAB AIR-CONDITIONING
D
AILY
Base - May 2004
- General
11
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Electronic control unit
11
. . . . . . . . . . . . . . . . . .
AIR-CONDITIONING SYSTEM CONTROLS
AND LOCATION OF VENTS
12
. . . . . . . . . . . .
HEATER/AIR-CONDITIONER UNIT
13
. . . . . . . . . . .
- Removal and Refitting
13
. . . . . . . . . . . . . . . . . . .
- Removal
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
”M. MARELLI” TYPE HEATER/AIR-CONDITIONER
UNIT
15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Components
15
. . . . . . . . . . . . . . . . . . . . . . . . . .
PROCEDURE FOR EMPTYING AND REFILLING THE
AIR-CONDITIONING SYSTEMS WITH
R134A REFRIGERANT
17
. . . . . . . . . . . . . . . . . .
- R134A refrigerant recovery and refilling
station (99305146)
17
. . . . . . . . . . . . . . . . . . . . .
CONTROL FASCIA
18
. . . . . . . . . . . . . . . . . . . . . . . .
SAFETY STANDARDS
20
. . . . . . . . . . . . . . . . . . . . . .
OPERATION FLOW CHART
21
. . . . . . . . . . . . . . . .
RECOVERING REFRIGERANT
FROM THE VEHICLE SYSTEM
22
. . . . . . . . . . .
CREATING A VACUUM IN THE SYSTEM
24
. . . . . .
RESTORING OIL IN THE SYSTEM
26
. . . . . . . . . . . .
FILLING THE SYSTEM WITH REFRIGERANT
27
. . . .
CHECKING THE PRESSURES IN THE SYSTEM
29
. .
OPERATIONS PRIOR TO DISCONNECTING
THE STATION FROM THE SYSTEM
29
. . . . . .
LEAK FINDER FOR AIR-CONDITIONING
SYSTEMS WITH HFC R134A (9905147)
29
. . . .
REPAIRS
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Air-conditioner unit control unit
30
. . . . . . . . . . .
- Removal - Refitting
30
. . . . . . . . . . . . . . . . . . . . .
- Removal
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRONIC CONTROLLER
30
. . . . . . . . . . . . . . .
- Removal - Refitting
30
. . . . . . . . . . . . . . . . . . . . .
- Removal
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANTI-FROST SENSOR
30
. . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
30
. . . . . . . . . . . . . . . . . . . . .
- Removal
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
30
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRIC FAN
31
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
31
. . . . . . . . . . . . . . . . . . . . .
- Removal
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATER RADIATOR
31
. . . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
31
. . . . . . . . . . . . . . . . . . . . .
- Removal
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MIXING ACTIVATOR
31
. . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
31
. . . . . . . . . . . . . . . . . . . . .
- Removal
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
31
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AIR INTAKE ACTUATOR
32
. . . . . . . . . . . . . . . . . . .
- Removal - Refitting
32
. . . . . . . . . . . . . . . . . . . . .
- Removal
32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TREATED AIR SENSOR
32
. . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
32
. . . . . . . . . . . . . . . . . . . . .
- Removal
32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
32
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EVAPORATOR UNIT
33
. . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
33
. . . . . . . . . . . . . . . . . . . . .
- Removal
33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
33
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EXPANSION VALVE AND EVAPORATOR
PIPE
34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
34
. . . . . . . . . . . . . . . . . . . . .
- Removal
34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
COMPRESSOR
34
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Compressor Removal - Refitting
34
. . . . . . . . . . .
CAB AIR-CONDITIONING
3
D
AILY
Page
- Removal
34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
34
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
POLLEN FILTER
35
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
35
. . . . . . . . . . . . . . . . . . . . .
- Removal
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
THREE-LEVEL PRESSURE SWITCH AND
DRIER FILTER
35
. . . . . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
35
. . . . . . . . . . . . . . . . . . . . .
- Removal
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CONDENSER
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
35
. . . . . . . . . . . . . . . . . . . . .
- Removal
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
35
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSTIC
36
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAILURES OF THE ELECTRIC TYPE
(MARELLI AIR-CONDITIONER)
36
. . . . . . . . . .
- Self-diagnosis
36
. . . . . . . . . . . . . . . . . . . . . . . . . .
- Diagnosis by error codes
36
. . . . . . . . . . . . . . . .
- Error codes
38
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Diagnosis by IWT, MODUS and UNITESTER
39
- Diagnosis by IWT
40
. . . . . . . . . . . . . . . . . . . . . .
FAILURE OF THE MECHANICAL TYPE
44
. . . . . . . .
”MARELLI” TYPE HEATER
47
. . . . . . . . . . . . . . . . . . .
- Removal - Refitting
47
. . . . . . . . . . . . . . . . . . . . .
- Removal
47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRIC FAN
48
. . . . . . . . . . . . . . . . . . . . . . . . . . .
- Removal - Refitting
48
. . . . . . . . . . . . . . . . . . . . .
- Removal
48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
48
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEATER CONTROL CABLES
49
. . . . . . . . . . . . . . . .
- Removal - Refitting
49
. . . . . . . . . . . . . . . . . . . . .
- Removal
49
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Refitting
49
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Page
HEATER UNIT
50
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
- Components
50
. . . . . . . . . . . . . . . . . . . . . . . . . .
4
CAB AIR-CONDITIONING
D
AILY
Before doing any work, you MUST observe the
SAFETY rules given in section 10 “Steering system”
35858
Figure 1
The purpose of the air-conditioning system is to make the
cab comfortable as regards the following parameters:
- temperature and relative humidity of outside air;
- temperature and relative humidity in the cab.
CAB VENTILATION DIAGRAM
The
system
subjects
the
air
to
thermodynamic
transformations that affect its temperature, relative humidity
and purity. This is accomplished by:
- Ventilation, or introducing air taken from the outside
(therefore with the temperature and humidity of the
surrounding environment) into the cab.
- Air-conditioning, or cooling and de-humidifying the air,
with the possibility of heating it afterwards as preferred
so as to change the temperature and humidity in the cab.
VENTILATION
Description
Ventilation is the function of drawing in fresh air from the
outside, cleaned of pollen and dust by a special filter, or
recycling the air in the cab.
This system is composed of a shell, designed to house the
electric fan unit, air ducts, fresh air intake and recycled air
intake. The electric fan has several speeds to draw in and
circulate large masses of air.
General
!
CAB AIR-CONDITIONING
SAFETY
STANDARDS
TO
OBSERVE
WHEN
WORKING
ON
VEHICLES
EQUIPPED WITH THE AIR-BAG SYSTEM
CAB AIR-CONDITIONING
5
D
AILY
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