Crowcon CellarSafe User manual

Issue 505/2006

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The CellarSafe is designed for easy installation using mains power supply. It is pre-calibrated and
has been designed for one man installation. The alarm levels are factory set and the relays are ‘fail
safe’ so in event of power failure the alarms will activate.

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Contact Crowcon
Contact Crowcon
Contact Crowcon
Contact Crowcon

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CellarSafe is fitted with an AC plug for convenience, however if permanent installation is required, it
should be wired to a dedicated AC spur fed from a circuit breaker, marked as the disconnecting
device for the CellarSafe.
The circuit breaker must comply with the relevant requirements of IEC 947-1and IEC 947-3. These
procedures ensure that the installation complies with the requirements EN 61010-1 (Low Voltage
Directive).
The repeater unit supplied with CellarSafe does not need specialist cabling. Each additional
repeater unit is supplied with a 9m cable as standard.

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3.0%
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115v ac option available
Note: CO2 alarms are Subject to a 25 second time delay to prevent false alarms when exchanging
gas cylinders. Oxygen alarms are instantaneous.

6 CALIBRATION AND TESTING
6.1 Introduction
It is necessary to test this product at least every twelve months to ensure that the sensors and
alarms are operational. Periodic testing may be performed simply by using exhaled breath to
generate high CO2and low oxygen alarms on units with an oxygen sensor fitted. Exhaled breath
contains approximately 4% CO2and 16% oxygen, and therefore contains sufficient levels of each
gas to cause alarms on the CellarSafe monitor.
To test the alarms, blow into a plastic bag and hold the open end of the inflated bag tightly over
the sensor(s) until the alarms activate. The CellarSafe display will show increased levels of CO2
and decreased levels of oxygen (on units with an oxygen sensor fitted), and the alarms should
activate after approximately 10-15 seconds for oxygen and 25 seconds for CO2.
Alternatively, Crowcon can provide a calibration unit and calibration gas for checking and
calibrating the sensors. The following sections describe the calibration procedure.
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6.2 Calibration
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6.3

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2 Adjust the gas flow to 750 ml/min for the carbon dioxide only monitoring system and
1.5 l/min for the dual gas monitoring system.
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