Ei Electronics Ei156TL User Instructions page 24

(iii) The cells may be depleted. The beeps should cease within 2
hours as the cells charge up. Fully charged, the cells will provide
up to 6 months back-up without mains power.
(iv) On the Optical Smoke Alarms only (Ei156TLH) if the unit
beeps and the red light does not flash at the same time it
indicates a problem with the smoke chamber - see Cleaning the
Smoke Alarm in the "User Instructions" leaflet.
If all of the above possible causes of beeps have been ruled out
but the beeping has still persisted for over 2 hours with the green
light on - the rechargeable cells may be defective. The Alarm
must be returned to Ei Electronics for repair or replacement (see
section Getting Your Smoke Alarm Serviced - in the "User
Instructions" leaflet).
2. Manual Testing:
The functioning of the rechargeable cells can be checked as
follows:
(i) Ensure that the alarm has been connected to the mains, green
light on, for a least 2 days for the battery to charge.
(ii) Turn off the mains power at the distribution board and check
that the green indicator light is extinguished. Do not remove the
plug from the rear as this will disconnect the cells.
(iii) Press the test button and ensure the horn sounds loudly for
10 seconds.
(iv) Release the test button and watch it carefully for one minute:
• The red light behind the test button or on the cover will
flash at least once.
• The unit must not give a beep which indicates the cells
are low.
(v) Turn on the mains supply at the distribution board only if the
unit passes all the above tests.
Note: If the mains is disconnected and the cells are almost
depleted the unit will beep every 40 seconds to remind the user
to reconnect the mains supply.
The unit will operate from the mains alone, even with a fully
depleted or a defective battery, though it may not give sufficient
warning of fire if the mains supply is disconnected for any reason.
If there are any problems get a licenced electrican to inspect the
house wiring and connections to the alarms. If there are still
problems the unit must be returned for examination (see section
on "Getting Your Alarm Serviced" - in the "User Instructions"
leaflet).
Surface Mounting Kits Ei157 & Ei158
The Smoke / Heat Alarms can be surface mounted without the
need to form a cavity for the plug and supply wires by using the
Ei157 Kit. This is particularly useful with concrete surfaces, with
retro-fitting and surface wiring.
ACCESSORIES
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