Operating instructions
cod. 1592001300
1592001300 XC440C gb r1.0 07.06.2004.doc
rel. 1.0
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3. First installation
At first installation, it’s necessary the following:
1.
Select the kind of gas.
2.
Set the range of the pressure probes.
In the following paragraph a short cut for the above operations.
Chapters 6 Parameters programming and 12 List of parameters will explain in detail these
operations.
3.1 How to set the kind of gas
The controller has memorised the relation between temperature and pressure for some gases.
The pre-set gases is: r404.
If another gas is used, act as in the following:
1.
Enter the Programming mode by pressing the Set and DOWN key for 3s.
2.
Select the “Pr2” parameter. Then enter the password 3 –2 1.
3.
Select the FtyP, kind of gas, parameter.
4.
Press the “SET” key: the value of the parameter will start blinking.
5. Use
“UP” or “DOWN” to change the gas amount the following: . Select the gas among the
following: r22= R22; r404=R404A; 507=R507; 134=134; r717= ammonia.
6. Press
“SET” to store the new value and move to the following parameter.
To exit: Press SET + UP or wait 30s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to
expire.
3.2 How to set the range of the pressure probes
According to the part number a controller is pre-set to work with the following pressure probes:
XC440C – xxxxA, or XC440C – xxxxE: PP11: -0.5÷11 bar (-7÷160 PSI) - relative pressure;
XC440C – xxxxB: PP30: 0÷30 bar (0÷435PSI) - relative pressure
If the probes you’re using have a different range act as in the following:
To set the pressure range of the Probe use the parameters:
PA04: Adjustment of read out corresponding to 4mA
PA20: Adjustment of read out corresponding to 20mA
Practically these parameters has to be set with the start and end scale of the probe range.
WARNING: set a value correspondent to absolute pressure.
E.I. PP11 relative pressure transducer, range -0.5÷11.0 bar. PA04=0.50; PA20=12.00.
PP30 relative pressure transducer, range: 0÷30bar. PA04=1.00; PA20=31.00.
