Chicago Pneumatic CPC 4, Инструкция по эксплуатации, Страница: 19 / 36

Chicago Pnematic Compressors 11/2008
62 305 549 65 Page 19
14.8 OPERATING PARAMETERS OF THE CONTROLLER.
The controller is programmed in the factory with the following parameters:
P0 = cut-off pressure (107 – 132 – 157 – 182 PSIG)
P1 = cut-in pressure (85 – 110 – 135 – 160 PSIG)
r 2 = maximum operating temperature (212 °F)
t 3 = not active
t 4 = not active
C5 = maximum number of start-ups per hour (10)
The controller is also programmed to measure the pressure in “PSI” (parameter C7 ) and the temperature in °F
(parameter C6 ).
The pressure and temperature units of measurement correspond to the table below.
Name of the parameter Value of the parameter
C6 0 = °C 1 = °F
C7 0 = bar 1 = °PSI
All parameters described above can be viewed and modified with the procedure indicated in Section 14.9.
The parameter number appears in the top display and the value of the parameter appears in the bottom display.
14.9 VIEWING AND MODIFYING THE VALUE OF PARAMETERS.
To view the parameters proceed as follows:
- Press and hold the button 4 Fig. 13a for a few seconds, until “P0” (cut-off pressure) appears on the top display: the
value of the cut-off pressure in PSI (107 – 132 – 157 – 182 PSIG) appears simultaneously on the bottom display.
- By pressing the button Ref. 1 Fig. 13a all the board parameters ( P0, P1, r2, t3, t4, C5, C6, C7 ) will appear in sequence
on the top display while the values set for each parameter will appear on the bottom display. To exit press the button
Ref. 3 until the luminous dot on the display is positioned on the symbol.
To change the value of parameters follow the example indicated below:
EXAMPLE: the maximum temperature value is to be modified to 203°F.
- Press and hold the button Ref. 4 fig. 13a for a few seconds, until the parameter “ P0 ” appears on the top display.
- Press the button Ref. 1 Fig. 13a until reaching the parameter “r2” (maximum temperature).
- Press the button Ref. 4 Fig. 13a: the value of the temperature indicated on the bottom display flashes.
- Press the button Ref. 2 Fig. 13a until reaching the value 203.
- Press the button Ref. 4 Fig. 13a to confirm the modification; the value 203 stops flashing.
- Exit from programming by pressing the button Ref. 3 Fig. 13a.
The new maximum temperature value is now 203.
14.10 DISPLAYING A TEMPERATURE LEVEL THAT IS TOO LOW
The controller is programmed in the factory with a minimum temperature level set at (+ 36 °F), if the temperature sensed
is lower, it is shown by the bottom display flashing. This fault signal does not mean the compressor cannot be started, but
warns the operator that the room temperature is too low.