Fireray 2000 Service And Maintenance - Page 5

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Fig. 3 Connection of Alignment Aid

When the detector heads are fitted for retro-reflective

operation the alignment procedure is as for normal operation

but with an additional test as follows:

When the system is aligned and in operating

mode block off the reflector at the reflector

e n d . T h e d e t e c t o r s h o u l d g o i n t o fa u l t

condition. If the detector does not go into fault

condition then it is possible that the signal is

being returned, not by the retro-reflector, but by

some other reflecting surface.

TESTING THE BEAM DETECTOR

SET

The following tests must be carried out after the first

installation, after any maintenance, or after every fire or fault

alarm to ensure fail-safe operation of the Beam Detector Set.

Supplied inside the Control Box is an acetate test card (filter)

with black markings on it which is used to provide

obscuration of the beam during tests.

Note: After the tests have been performed this

acetate card should be held with the system log

book and not inside the Control Box.

5.1

SMOKE ALARM TEST

Proceed as follows:

a) Hold the test filter in the beam path

b) After approximately 9 seconds:

i) the Fire Relay contact operates (the relay

contacts will click once as it operates).

ii) the Fire alarm LED (red) on the front panel

will light.

c) Remove the test filter, the alarm will reset in

approximately 4 seconds (unless in latching

mode).

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d) Reset the Beam Detector Set either by:

i) Moving the Test/Reset switch to OFF, then

ON and then OFF, or

ii) Disconnecting the power for 2 seconds, or

iii) Taking the External Reset terminal to 0 volts

for one second.

e) The Beam Detector Set is now reset and armed.

5.2

FAULT ALARM TEST

Proceed as follows:

a) Totally obscure the beam with an opaque

object such as a piece of card.

c) After about 10 seconds check that Fault LED

(LED 1) lights, and the fault relay contacts

change state.

d) Remove the Test Card obscuring the beam.

e) Check that the Beam Detector Set resets itself

automatically within 4 seconds.

f) Secure the front cover, the Beam Detector Set is

now reset and armed.

Note: After the tests have been performed the recorded

values should be held with the system log book

and not inside the Control Box.

ORDERING INFORMATION

Fireray 2000 complete:

LPBD520:

Retro-Reflector (TKS 100 x 100):

Alignment Aid:

ASSOCIATED PUBLICATIONS

05A-02-S1 FIRE SYSTEMS - GENERAL SERVICE AND

MAINTENANCE INSTRUCTIONS

CB/jm

12th January 2001

FIRERAY 2000

01B-05-S1

1/01

516-015-006A

516-015-006T

557-180-217

516-015-007

516-015-008

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