evolution
EV-H
ANALOGUE ADDRESSABLE
HEAT SENSOR
Ref No:
DATE:
PAGE:
NISM/EV-H/04
FEBRUARY 2012
ISSUE:
INSTRUCTION MANUAL
3
of
6
04
Section 4 - INSTALLATION
In normal use, the EV-H heat sensor will be installed at
ceiling level. Pass the field wiring through the cable hole in
the centre and from the rear of the base. Offer up and
affix the base to the ceiling or conduit fitting with screws
via the base mounting holes. Connect the field wiring to
the base terminals, as detailed on page 6 making sure the
wiring does not obstruct fitting of the sensor head.
Fit the heat sensor head by inserting it into the base and
turning clockwise until the notch in the sensor's rim aligns
with base locking screw. The OMNIVIEW
TM
360
o
LED
alarm indicator permits visibilty from any angle.
Note: The address must be set before the sensor is
fitted into place.
Fit the plastic dust cover supplied over the sensor to keep
out dust etc, until the system is commissioned. If the dust
cover is not fitted and the environment is slightly dusty,
such as when building work is being completed, for
example, problems of false alarms are likely to occur
unless cleaning of the sensor is undertaken. At
commissioning, the dust cover should be removed and
discarded.
NOTE: THE PLASTIC DUST COVER MUST BE RE-
MOVED FROM THE SENSOR IN ORDER FOR THE
SENSORTOFUNCTIONCORRECTLY.
Section 5 - MAINTENANCE AND
CLEANING
Maintenance:
The EV-H sensor is a high quality product engineered for
reliability. In order to obtain optimum performance.
periodic maintenance is required. If proper preventative
maintenance is not carried out, there is a likelihood of
malfunction, including false alarms.
Servicing:
Servicing of the system should be carried out in accord-
ance with the requirements of BS 5839 Part 1, Fire
Detection and Alarm Systems for Buildings: Code of
Practice for System Design, Installation and Servicing. The
maintenance procedures described below, should be
conductedwiththe followingfrequency:
One month after installation: Routine Inspection and
every 3 months
thereafter.
Every 6 months: OperationalTest.
Every 12 months: Functional Test and
Cleaning.
All above frequencies of maintenance are dependent on
ambient conditions.
RoutineInspection
i) Ensure the sensor head is secure and undamaged.
ii) Check the heat entry apertures are in no way
obstructed.
iii) Ensure that the surface of the sensor's outer cover is
clean. If there are deposits due to the presence of oil
vapour, dust etc, then the sensor should be cleaned in
accordance with the cleaning instructions detailed later in
this manual. It may be advisable to ensure that such
cleaning is conducted regularly in future.
iv) Ensure that no equipment which may generate exces-
sive heat has been installed in the vicinity of the sensor
since the last routine inspection. If such equipment has
been installed, then you should notify the Fire Safety
Officer or other competent authority that its presence
may cause false alarms.
Operational Test
The purpose of the Operational Test is to confirm the
sensor’s correct operation in response to a heat condi-
tion.
Note: When carrying out site testing of Analogue
Addressable Evolution sensors, the CIE shall be set to
test mode prior to beginning the tests.
i) Take any necessary precautions at the control panel to
limit the sounding of the alarm sounders/bells and any fire
service summoning device.
ii) Test the sensor with heat from a warm air gun de-
signed for heat sensor testing (e.g. 'No Climb - Solo' heat
sensor tester). Check that the sensor gives an alarm
condition within 10-20 seconds depending upon the sensor
grade and the applied air temperature. Check
that the LED indicator on the sensor illuminates.
N.B. Hot air blowers sold for paint stripping,
soldering pipes etc. generate sufficient heat to
damage the sensor and should not be used for testing
heatsensors.
iii) After the sensor has given the alarm condition, reset
the sensor from the control panel. It may be necessary
to allow a short time to elapse before resetting the
sensor, to allow any residual heat from the test to dis-
perse.
iv) Before proceeding to the next sensor, ensure that
the sensor just tested does not re-operate due to the
presence of residual heat.
