Signalling Of Detectors; Maintenance - EsiWelma Sensigas ESN14 Serie Instrucciones Generales

9.

Signalling of detectors

STATE OF DETECTOR LEDs
Green Yellow
OFF (no supply)
Pre-heating (60s)
Normal operation
Gas alarm
Sensing element fault
= OFF = not active
Legend:
= ON = active

10. Maintenance

The device does not require any maintenance except for periodically operating check (see above). Replace the detector after 5
years from the date of installation (see indications on front cover).
For the periodical cleaning of the detector plastic box, use a lightly dampened rag and neutral soap. Do not use aggressive
cleansing products such as alcohol, ammonia, solvents etc.
CAUTION: To avoid any risk of electric shock, before cleaning the detector be sure that it is powered off by acting
on the main switch of the electric plant.
®
EsiWelma s.r.l.
BUZZER OUTPUTS OF DETECTOR
Red Solenoid valve Relay
(ESN16.., ESN26..) (ESN14.., ESN26..)
C NC NO
C NC NO
C NC NO
C NC NO
C NC NO
= no voltage (valve open) = relay OFF
C NC NO
= pulses (valve closed) = relay ON
C NC NO
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