Protectowire 2000 FireSystem Bedienungsanleitung PDF herunterladen (Seite 27)

Testing

Inspection, testing and maintenance of all fire

detection/releasing systems shall be per-

formed only by experienced and qualified

personnel. All people and facilities that

receive alarm, trouble or supervisory signals

shall be properly notified prior to the start of

testing and again after the testing has been

concluded. Suppression systems shall be

secured from inadvertent actuation by discon-

necting electric actuators or releasing sole-

noids, closing valves or taking other actions as

appropriate for the specific system for the

duration to the test. All system devices and

releasing components must be returned to

their normal condition after completion of

the system testing.

Classified as a fixed-temperature, non-restor-

able line type heat detector, Protectowire is

subject to the following test method as

described in NFPA 72:

“Do not heat test. Test mechanically and elec-

trically for function. Measure and record loop

resistance. Investigate changes from accep-

tance test.”

This test procedure may be easily accom-

plished in Class B initiating circuits by using

the built-in test button contained in some fac-

tory supplied end-of-line zone boxes, or by

using a jumper wire to apply a short across

the end-of-line resistor to create an alarm. In

a Class A initiating circuit the recommended

procedure is to remove the plus and minus

return legs of the circuit at the control panel

terminals. This action should cause a trouble

signal at the control panel.

To create an alarm condition on the circuit

(alarm overrides trouble), place a jumper

across the disconnected return leads. This

action will cause the necessary alarm condition

to activate the circuit and complete the test.

To measure loop resistance, place each circuit

in alarm and leave the short across the detec-

tion circuit as described above. Disconnect

each detection circuit’s wires from the termi-

nals of the control panel. Place an ohm meter

across the disconnected zone wires (out +

and out –) and record the resistance mea-

sured. Compare these values at each annual

testing. Any change in loop resistance should

be investigated for possible deterioration of

the inner conductors with particular attention

given to termination points, in-line splices or

areas of the Detector where the outer jacket

has been compromised or damaged.

In some areas, local codes or the authority hav-

ing jurisdiction may require a heat test in lieu

of the recommended electrical test procedure.

A simple method of heat testing a non-restor-

able fixed-temperature linear detector, is to

select a convenient location in the detection

loop and using approved splicing connectors or

zone boxes, install a small test length of linear

detector between the splice connection points.

The test area may be heated by what-

ever means required to satisfy the test require-

ments. When finished, the heat actuated section

can be removed and replaced with a new piece

of detector, thereby restoring the system back to

normal operation.

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To assist the installer and service personnel in

locating heat actuated sections of the Protecto-

wire Linear Heat Detector, or portions of the

Detector which have been shorted due to

mechanical damage, two portable test instru-

ments are available from The Protectowire

Company.

APL-90 Meter Adapter

The APL-90 Meter Adapter is designed to con-

vert any Digital Multimeter which contains a

200 millivolt scale, to a Protectowire Alarm

Point Location Meter. It enables the user to

determine the distance of the alarm point

(short) from the start of the Protectowire por-

tion of the detection circuit. The APL-90 is

housed in a high impact plastic case which

measures 3.75 x 2.50 x 1 inch (9.5 x 6.4 x 2.5

cm). The unit weighs 4 ounces (113 g), and is

which provides sufficient power for approxi-

mately 100 hours of use.

The Adapter is equipped with a standard size

double banana plug with male probes spaced

.75 of an inch (1.9 cm) on center. This plug

provides the means to connect into a Digital

Multimeter. A power ON/OFF switch, Power

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