Protectowire 2000 FireSystem Instrukcja Użytkownika Pobierz pdf (Strona 21)

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spaced as shown in Figure 20. When additional

cables are pulled into the tray they should also

be placed below the Detector.

Figure 20A illustrates the application of BC-2,

CC-2, CC-10, and HPC-2 mounting clips to

various types of cable trays.

Conveyors

Belt type (overhead installation) Figure 21

illustrates Protectowire Linear Heat Detector

with Type M messenger wire installed directly

over the conveyor to be protected. Whenever

possible, the Detector should be fastened to a

covering which is not more than 7.5 feet

(2.3m) above the conveyor belt and which is

in a horizontal plane or parallel to the line of

the conveyor. This will act as a heat collector

and will provide earlier detection. Support is

provided by messenger wire* which is fas-

tened with a turnbuckle at a maximum dis-

tance of 250 feet (75.7m). Approved interme-

diate fastening devices are used at intervals of

15 feet (4.5m) to 20 feet (6.0m) to ensure

detector tautness.

Figures 21A and 21B illustrates Protectowire

Linear Heat Detector with Type M messenger

wire installed on either side of the belt in the

area between the idler and the roller. Support

is provided by messenger wire* which is fas-

tened with a turnbuckle at a maximum dis-

tance of 250 feet (75.7m) to ensure Detector

tautness. Approved fastening devices are used

at each idler to avoid detector contact with

moving parts.

Belt side installation - See Figures 21C and

21D. (a) A third optional location for installa-

tion of Protectowire Linear Heat Detector is

beside and slightly above the belt.

(b) Install the Detector with Type M messen-

ger wire* on both sides of the belt beneath a

3 x 3 x 1/8 inch (7.6cm x 7.6cm x .3cm) angle

iron which is used as a heat collector and a

support. The angle iron should be located 3

to 4 inches (7.6cm to 10.2cm) above the belt

and directly over the line of the outboard

roller bearings.

(c) Support the Detector by securing the mes-

senger wire to turnbuckles and eyes located at

intervals of up to 250 feet (75.7m) and also by

the use of Protectowire approved fasteners

Figure 21C

Figure 21D

Belt type (idler arm installation)

Figure 21

Figure 21A

Figure 21B

Protectowire

Linear Heat

Detector

Protectowire Linear Heat Detector

End-of-line resistor/box

End-of-line resistor/box

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