Manual: EV-PYS Manual 000028 (Changes are subject to DCRN)
6
ii)
Introduce a discrete amount of smoke into the sensor head, e.g.
using a ‘Detector Testers - Solo’ smoke test head, alternatively Detector
Testers “Testifire” smoke test equipment maybe used. Check that the
sensor gives an alarm condition within 15 seconds. Check the LED
indicator on the EV-PYS sensor illuminates and any remote indicator LED
fitted also illuminates.
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
smoke from the test to disperse.
iv)
Before proceeding to the next sensor, ensure that the sensor
previously tested does not re-operate due to the presence of
residual smoke.
Functional Tests:
The functional test checks the sensor operation. These sensors may
be returned to our factory for Functional Testing.
Cleaning:
Note: The sensor head should NOT be disassembled.
i)
Carefully remove the sensor head from its base.
ii)
Use a soft, lint-free cloth, moistened with alcohol for sticky
deposits, to clean the plastic casing.
iii)
Using a soft bristle brush (e.g. an artist’s paint- brush) carefully
brush between the vanes in a linear motion away from the
smoke entry apertures
iv)
It is permissible to blow dust from the chamber,without removing
the cover, using a clean air line.
v)
If the unit needs further cleaning, or is damaged or corroded,
please return the complete sensor to Nittan (EUROPE) Ltd. for service.
• Ref No: NISM/EV-PYS/02 • 19.02.19 • Issue: 2
• Evolution • EV-PYS • analogue addressable photoelectric sensor with integral sounder
