MAN2285-9
Page 22
Fitting the pipe adapter
7.1.1
Mechanical installation
The docking station is connected to the installed sampling pipework and fixed to the wall or mounting surface
using 3 off screws of a type appropriate to the mounting surface. Ensure that the sampling and/or exhaust
pipes are securely seated in the pipe ports before fixing. If using a piped exhaust docking station be sure that
the sampling and exhaust pipes are fitted into the relevant ports as shown in Section 7.1.
7.1.2
Electrical installation
The FastSense 25 detector is supplied with removable terminal blocks (See illustrations in Section 3). These are
simply removed from their sockets by lifting them up at right angles to the circuit board. Take note of the
orientation of each terminal block and its function before removing it. It may also be beneficial to mark the
connection wires with suitable identification labels or coloured rings to aid in the connection process.
Note:
All connections should be made with the power turned off.
7.1.3
Power supply connections
The power supply cable should be of screened type and should be led through the metal cable gland provided,
leaving about 35mm of the cable extending from the bottom of the cable gland. Depending on the type of cable
used, it may be necessary to increase the diameter of the cable with sleeving or insulating tape to ensure that
the cable is firmly held and a seal is provided when the cable gland is fully tightened.
Remove the detector cover by unfastening the four screws at the front of the unit and detach the power supply
terminal block. This is at the top left with the detector held with the serial port at the bottom of the unit.
Note:
the orientation of the terminal block.
Connect 0V and +24VDC to the “0V” and “24V” screw terminals respectively. Connect the screen wire to the
earth stud on the docking sta
tion and connect a second wire from the “Earth” terminal to the docking station
earth stud. The picture in Section 7 shows the location of the earth stud. Fix the earth wires in place with the
nuts provided.
