Connecting cables and mounting the switch box
10
Multitronic-Retrofit Kit_01_2004-06-16
Connecting cables and mounting the switch box
For an overview of the general layout of the circuit board, please refer to the
diagram on page 11. To mount the switch box and wiring harness, proceed as
follows:
►
Check whether the selected position of the switch box and the cable
connections to the valves are suitable by holding the box against the unit.
The maximum cable length is 1300 mm. Mount conduits, if necessary.
►
Connect wiring harness to the solenoid valves of the dryer.
►
Insert harness through the centre metric cable gland at the base of the switch
box.
►
Connect the cables for the individual solenoid valves to the respective
terminal bar.
—
In 3-valve models with normally closed main valves:
Y1-Y2 to terminal bar X1-X2;
bridge terminal bars X3 and X4, then connect Y3 to X3.
—
In 4-valve models with normally closed main valves:
Y1-Y4 to terminal bar X1-X4.
—
In 4-valve models with normally open main valves:
Y1 to X2, Y2 to X1; Y3 to X3 and Y4 to X4.
—
In 5-valve models with normally closed main valves:
Y1-Y5 to X1-X5.
For detailed instructions regarding correct wiring, please refer to page 12 ff.
►
Attach the switch box in the correct position, using the four self-adhesive
dots.
Mounting the sensor cell and connecting the sensor (optional)
Installation of dewpoint sensing system (optional)
To enable dewpoint measuring (optional), the sensor cell (3) must be mounted on
the outlet side of the dryer to the outlet line (4):
►
Secure the sensor cell at a suitable place (i.e. near the compressed air
outlet) and in a vertical position, using the two threaded 6.5-mm bores (3a).