Bosch CRS-WLFD-TA869 manual

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  • Brand: Bosch
  • Product: Smoke detector
  • Model/name: CRS-WLFD-TA869
  • Filetype: PDF
  • Available languages: English, German, French

Table of Contents

Page: 15
16
Please read through these installation
and operating instructions completely
and carefully before putting the Water
Detector into service.
GB
Page: 16
17
GB
Table of Contents
Product features ................................................................................................ 18
Operating principle ............................................................................................ 19
Technical data .................................................................................................... 20
Choice of location ............................................................................................. 21
Unsuitable locations .......................................................................................... 22
Installation and putting into service ................................................................... 23
Operating and warning signals .......................................................................... 25
Safety instructions ............................................................................................. 26
Maintenance and care ........................................................................................ 27
Page: 17
18
GB
Product features
• Battery-powered water detector for prompt detection of water leaks.
• Test button for manual functional check plus automatic self-test.
• Visual and acoustic alarms (loud warning beep).
• LED and short beep indicate low battery power.
• Easy placement of instrument with no cabling.
• If no battery is fitted, the water detector will not click into place in its base.
Page: 18
19
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Operating principle
The water detector identifies water leaks promptly and gives an alarm. It de-
tects water by measuring the electrical resistance between two electrodes. If
water enters the space between the electrodes, the resistance changes. This
variation is evaluated electronically to initiate an alarm.
In the event of an alarm!
• Turn off the water supply at the main stopcock.
• Locate the leak.
Page: 19
20
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Technical data
Operating voltage 9 V rectangular battery
Quiescent current < 0.016 mA
Current in alarm condition < 20 mA
Ambient service temperature +5 °C to +55 °C
Storage temperature +5 °C to +55 °C
Ambient humidity range 0 to 80% relative humidity, non-condensing
Recommended battery type rectangular battery IEC 6F22, 9 V
Battery low power signal acoustic, 1 signal/minute, for about 30 days
Visual alarm LED, red
Acoustic alarm > 85 dB(A) at 1 m
Battery service life (with no alarms) approx. 2 years (for type > 300 mAh)
Ingress protection IP 20
Dimensions height 63 mm, diameter 80 mm
Weight approx. 150 g
Page: 20
21
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Choice of location
• The water detector must be placed on the floor at the lowest point of the
room or building level (e.g. bathrooms, kitchens, cellars, etc.).
• It is always recommended to locate water detectors in the near of the wash-
ing-machine and the dishwasher. In the cellar near to the house water
distribution manifold and where the main water supply enters the building.
• Water detectors can also be located where the house drains are at a lower
level than the sewer, or where water can collect if heavy rainfall occurs and
water enters the house.
Page: 21
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Unsuitable locations
• Walls and ceilings
• Rooms with extremely high humidity and condensation
• Rooms that do not comply with the ambient conditions specified in the
technical data.
False alarms
Despite their spurious alarm logic circuitry, water detectors may under certain
unfavourable circumstances activate a false alarm. Thick layers of dust
(> 1 mm) on the floor and high atmospheric humidity (making the dust wet or
damp) can be the cause of this.
If the water detector continues to cause false alarms, please locate it some-
where else or clean the floor surface underneath the instrument.
The ageing process means that with time the two detector sensing elements at
the bottom of the device can become contaminated, depending on local condi-
tions, which can result in false alarms. If this happens, the detecting elements
should be cleaned.
Page: 22
23
GB
Installation and putting into service
Install the water detector according to the following procedure:
• Remove the water detector (Fig. 1, B) from its base (A) by turning it anti-
clockwise.
• Attach the 9 V rectangular battery to the connector (4) and insert it into the
battery holder (1).
• Insert the water detector into the base, without using force, and turn it
gently clockwise until it clicks into place. When doing this, ensure that the
two sensor cables do not become trapped.
Note!
If no battery is fitted, the water detector will not click into place.
• Finally verify the good working order of the water detector by pressing its
test button (3). If the water detector emits a warning beep, it is functioning
correctly. If no beep is given, check that the battery is correctly connected,
or replace it with a new battery if necessary.
• Now place the water detector in a suitable location (metal contacts down-
wards).
Page: 23
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Fig. 1 Putting into service
3
A
B
2
1 4
Fig. 2 Detector in place
sensors
Page: 24
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Operating and warning signals
The water detector’s electronic circuitry makes regular measurements every
8 seconds.
Following a water alarm, the instrument resets itself automatically once there
is no more water present between the contacts.
Signal Significance
Loud alarm tone at intervals, Local water alarm
red LED flashes
Brief beep tone at one-minute intervals, Battery low-power warning,
the red LED simultaneously flashing briefly the battery must be replaced
(for up to about 30 days)
Red LED flashes briefly at intervals Automatic self-test,
of about 40 seconds normal operating condition
Page: 25
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Safety instructions
• The metal contacts underneath the water detector must not be painted.
• The loud alarm signal can damage hearing. We recommend that when you
carry out the manual test, a minimum distance of 40 cm must be main-
tained between the water detector and your ear. Do not prolong the test for
longer than 10 seconds.
• A warning light or a vibrating pillow must be installed for people with
impaired hearing. These can be activated by a water detector with a relay
module or a radio transmitter module.
• Water detectors do not prevent pipes bursting and do not turn off the water
supply. If an alarm occurs, the leak must be located and appropriate meas-
ures taken (see “In the event of an alarm”).
• The water detector only works when the battery is in good working order
and correctly installed. Rechargeable batteries or AC adapters must not be
used, as they can disturb the functioning of the detector or cause its pre-
mature failure.
• The water detector only monitors a defined area in its vicinity and will not
necessarily monitor another room or another floor (see also “Choice of
location”). Therefore install a sufficient number of water detectors to ensure
optimum protection.
Page: 26
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• The water detector should be audible in the entire living area. If necessary,
install additional sounders, e.g. a klaxon. It is possible that people under
the influence of alcohol or drugs may not be alerted by the acoustic alarm.
Maintenance and care
To ensure proper functioning of the water detector, please pay attention to the
following points:
Monthly
• Press the test button:
– If it emits the warning tone, the water detector is in good working order.
– If the warning tone is not emitted, please check the battery. If this does
not help, the water detector must be replaced by a new one.
Every 6 months
• Wipe the instrument with a damp cloth, especially the sensing elements at
the bottom.
• Clean the floor surface underneath the water detector.

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