Iveco Daily Euro 4. Manual — part 225
When the cylinder contains the necessary quantity for filling
(both pipes must already be connected to the system
connectors since the vacuum operation has already been
performed), proceed as follows:
- close the LOW valve, keep the HIGH and V1 - V2 valves
open;
- press the switch B (Refrigerant process) onto position 1,
the indicator light LB1 will come on;
- press the switch C (Charge) onto position 2, the
respective indicator light LC2 will come on and refrigerant
will flow from the station into the system;
- having loaded 200
÷ 500 g of refrigerant, depending on
the size of the system, stop filling by moving the switch C
(Charge) onto position 0;
- check the system is properly sealed with the electronic
leak finder;
- complete filling the system until the pre-calculated
residual weight in the cylinder is reached;
(Residual weight = Total weight - System capacity weight)
- complete filling, move the switches C - B and A onto
position 0 (A had been moved for the vacuum).
Check again there is no leakage;
- close the HIGH valve.
50641
When filling, if the level of refrigerant in the cylinder
falls under the required quantity the system will stop
and the Minimum Level indicator light (L5) will
come on.
NOTE
Figure 22
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CHECKING THE PRESSURES IN THE SYSTEM
After filling, leave the pipes connected and carry out the
following check:
- close the HIGH and LOW valves, V1 and V2 open;
- turn on the engine, switch on the air-conditioner and
check on the pressure gauges M1 and M2 that the
pressures correspond, normally: low pressure no less than
1 bar, high pressure 15
÷ 18 bar, depending on the system
specifications.
OPERATIONS PRIOR TO DISCONNECTING
THE STATION FROM THE SYSTEM
Always observing the above safety rules, carry out the
following operations:
- check that all the valves are closed: LOW - HIGH, V1 -
V2;
- disconnect the pipes of valves V1 - V2 and put the caps
back onto the system valves;
- Check the system again with the leak finder.
LEAK FINDER FOR AIR-CONDITIONING
SYSTEMS WITH HFC R134A (9905147)
Tool L-780A makes it possible to identify leakage of HFC
134A gas from the system extremely accurately in the order
of 3.3 g a year with the switch on maximum sensitivity.
This instrument requires no settings, the operator only needs
to select the desired sensitivity.
The instrument warns the operator of any gas leakage with a
buzzer and a LED that flashes in proportion to the
concentration of gas.
In addition, the LED indicates the battery is flat if it goes out.
Operating temperature is between 0 C and 50
°C.
The instrument is equipped with a flexible probe to reach
particularly difficult fittings or parts.
The two levels of sensitivity are:
- low sensitivity = 16.5 g/year;
- high sensitivity = 3.3 g/year.
50642
50643
Normally, with the air-conditioner switched on, air
should come out of the vents at a temperature
lower than 5
°C and after a period of operation to
stabilize the temperature of the ducts.
NOTE
Before checking vehicles, wait for the engine to cool,
the hot parts can falsify the test.
NOTE
Figure 23
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SCHEDULED MAINTENANCE
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SECTION 13
Scheduled maintenance
Page
MAINTENANCE
3
. . . . . . . . . . . . . . . . . . . . . . . . .
-
Table of maintenance services
3
. . . . . . . . . . . . .
F1A ENGINE VEHICLES
4
. . . . . . . . . . . . . . . . . . .
-
Inspection and/or maintenance interventions
4
.
-
Extra plan operations
5
. . . . . . . . . . . . . . . . . . .
F1C ENGINE VEHICLES
6
. . . . . . . . . . . . . . . . . . .
-
Inspection and/or maintenance interventions
6
.
-
Extra plan operations
7
. . . . . . . . . . . . . . . . . . .
DIAGRAM OF CHECK
AND/OR MAINTENANCE POINTS
8
. . . . . . .
MAINTENANCE OPERATIONS
9
. . . . . . . . . . . .
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