Halma Crowcon CellarSafe User manual
CellarSafe
Carbon Dioxide and
Oxygen Safety Monitor
Installation and operating instructions
for the CellarSafe Monitor and the
CellarSafe Calibration Unit
M07234
May 2008
Issue 6
Warning
Please take care that CellarSafe is installed and operated in accordance with these
instructions.
The product may not be able to warn of gas hazards if used in any other way.
Crowcon Detection Instruments Ltd
2 Blacklands Way, Abingdon
OX14 1DY UK
Tel. +44 (0)1235 557700
Fax. +44 (0)1235 557749
www.crowcon.com
Email: [email protected]
© Copyright Crowcon Detection Instruments Ltd 2008.
All rights are reserved. No part of the document may be
photocopied, reproduced, or translated to another language
without the prior written consent of Crowcon Detection
Instruments Ltd.
Publication number: M07234
Sixth edition: May 2008
CellarSafe
Carbon Dioxide and Oxygen
Safety Monitor
Contents
I. Introduction ................................................................ 1
1.1 Product overview................................................... 1
1.2 Product description ............................................... 1
1.3 Normal and fault states of LEDs............................. 2
1.4 Alarm conditions for CellarSafe base and repeater
units............................................................................ 2
1.5 Options for the CellarSafe ..................................... 5
II.. Installation .................................................................. 6
2.1 General ................................................................. 6
2.2 Mounting.............................................................. 6
2.3 Cabling requirements ............................................ 7
2.4 Electrical connections for external alarm equipment 7
III. Operation and set up ................................................. 9
3.1 Mode button......................................................... 9
3.2 Operator display panel .......................................... 9
3.3 Set up ................................................................... 9
3.4 Self-Test ................................................................ 9
3.5 Alarm levels......................................................... 10
3.6 In the event of a low or high alarm condition ...... 10
IV. Specification............................................................. 11
V . Troubleshooting guide............................................... 12
VI. Calibration, testing and routine maintenance ............ 13
6.1 Introduction ........................................................ 13
6.2 Fuses................................................................... 13
6.3 Calibration .......................................................... 13
6.4 Calibrating the CellarSafe gas monitor ................ 14
1
CellarSafe Introduction
I. Introduction
1.1 Product overview
CellarSafe is a carbon dioxide and oxygen fixed monitoring system designed to
monitor gas levels in a confined space, such as a beer cellar. The system consists
of one base unit housing the gas monitoring system and is supplied with one
repeater unit to be located in a safe position outside the confined area.
Version 1 is a carbon dioxide monitor only, which looks for rising gas levels.
Version 2 is a combined system which monitors both rising levels of carbon
dioxide and falling levels of oxygen.
CellarSafe operates two alarm relays if the gas level exceeds the two pre-set
alarm levels. The output from these relays can be used to control external visual
or audible alarms, or ancillary equipment such as a fan.
CellarSafe is designed for easy installation using mains power supply and has
been designed for one-man installation. The alarm levels are factory set and the
relays are ‘fail-safe’ so the alarms will activate if the power supply fails.
The CellarSafe is supplied with one repeater unit. The repeater unit provides a
remote interface to mimic the gas monitoring alarms, fault alarm, power indica-
tor, MODE button and sounder of the base unit. A series of repeater units can
be daisy-chained together to provide an extension of monitoring system. Each
additional repeater unit is provided with a 9 m cable.
1.2 Product description
CellarSafe consists of two components: a base unit and a repeater unit.
The base unit is a single shell housing the gas monitors. The display panel at the
front contains a liquid crystal display, MODE button, four illuminating LEDs and
a sounder (see Figure 1.1). Electrical connections for mains power, two relay
outputs and the repeater unit are located at the bottom of the base unit.
A 2 m mains cable and two carbon dioxide warning labels are also provided.
The repeater unit (see Figure 1.2) is supplied with a 9 m connection cable. The
repeater unit mimics the base unit but does not have the display panel.
2
Introduction CellarSafe
1.3 Normal and fault states of LEDs
The illuminating LEDs on the base unit and all repeater units indicate conditions
as below.
Flashes when the system is running:
POWER
green LED
If this LED is extinguished the system is not running,
if the LED is on continuously a fault condition is present.
If the battery backup option is fitted, the sounder will beep
every 20 seconds in the event of mains power failure.
FAULT
yellow LED
Flashes when there is a system fault.
LOW ALARM
red LED
Flashes when the low alarm level (pre-alarm) is exceeded.
HIGH ALARM
red LED
Flashes when the high alarm level (main alarm) is exceeded.
1.4 Alarm conditions for CellarSafe base
and repeater units
(Indications on some versions may differ in some details. Check specification sheet
supplied with unit)
When the low or high alarm gas level is exceeded the sounder and alarm LEDs
will operate, Table 1.1 outlines the alarm conditions.
Table 1.1: Alarm conditions for the CellarSafe and repeater units
Gas levels RELAY
INDICATION
LED
INDICATION
SOUNDER
INDICATION
Normal Not active No alarm LEDs No sound
Increasing gas levels of carbon dioxide
Gas level > Low
Alarm
Low Alarm Low Alarm LED
flashing
Long beep once
per second
Gas level > High
Alarm
Low and High
Alarm
Low and High
Alarm LEDs
flashing
Long beep once
per second
3
CellarSafe Introduction
Gas levels RELAY
INDICATION
LED
INDICATION
SOUNDER
INDICATION
Decreasing gas levels of oxygen
Gas level > Low
Alarm
Low Alarm Low Alarm LED
flashing
Long beep once
per second
followed by one
short beep
Gas level > High
Alarm
Low and High
Alarm
Low and High
Alarm LEDs
flashing
Long beep once
per second
followed by one
short beep
The MODE button is used to communicate with the CellarSafe after an alarm
is triggered. In the first instance pressing and holding the MODE button for 5
seconds will silence the CellarSafe alarm sounder, the alarm LEDs will continue
to flash in an alarm condition (i.e. gas is still present or in the case of oxygen,
depleted).
When the gas level has returned to normal the illuminating alarm LEDs will
extinguish but will reactivate the sounder and illuminating LEDs if the alarm
level is exceeded again. The CellarSafe is set to use non-latching alarms - the
LEDs will automatically extinguish when the gas level returns to normal.
If the system fault alarm is activated the CellarSafe will sound a beep twice
every second and the yellow warning light will flash. The system fault alarm will
activate if a sensor fault condition occurs.
Electrical connections for external alarm equipment are located within the main
CellarSafe base unit. One connection terminal is provided for the main alarm
and one for the pre alarm.
4
Introduction CellarSafe
Figure 1.1 The CellarSafe with carbon dioxide and optional oxygen monitors.
Figure 1.2 The CellarSafe Repeater Unit.
5
CellarSafe Introduction
1.5 Options for the CellarSafe
Oxygen monitor
CellarSafe can be fitted with an oxygen monitor to provide dual monitoring of
safe gas levels of carbon dioxide and oxygen.
Backup battery
The CellarSafe can be fitted with a backup battery providing 2 hours of backup
in the event of mains power failure.
When in backup mode the CellarSafe will emit a beep once every 20 seconds.
Up to 4 repeater units can be used with the CellarSafe base unit.
Additional repeater unit
Each additional repeater unit is supplied with a 9 m cable. For a full list of
CellarSafe units and options, see Table 1.2 below.
Table 1.2: CellarSafe units and options
ITEM PART NUMBER
CellarSafe - complete unit Contact Crowcon
CellarSafe with battery backup Contact Crowcon
CellarSafe with oxygen sensor
module
Contact Crowcon
CellarSafe with battery backup and
oxygen sensor module
Contact Crowcon
† Repeater unit including cable 99S38001
Calibration Gas CO3324
Field Calibration Unit 99S38002
†Additional repeater units come with 9 m cable.
Important
• Where battery back-up has been specified, batteries will be found
inside the unit, but not yet connected. Connect before use.
• The battery backup unit and the oxygen option contain non-
environmentally friendly elements. Please dispose in an
environmentally and safe manner or return to Crowcon for safe
disposal.
6
Installation CellarSafe
II. Installation
When carrying out any installation work, ensure that local regulations
and site procedures are followed.
2.1 General
This manual contains instructions for installing the CellarSafe base unit and
repeater unit. Before beginning installation of the CellarSafe please follow the
mounting, cabling and installation instructions, paying close attention to the
location of the base unit.
2.2 Mounting
The CellarSafe base unit is designed for wall mounting and should be located
near to the valves and manifold within the confined space approximately 0.5m
from ground level . Fixing holes are attached to the unit so that it can be
attached to the wall with appropriate screws and wall plugs.
The CellarSafe repeater unit should be mounted outside of the confined space -for
example, on the doorframe at the entrance, using the fixing brackets provided.
The height should be at eye level for ease of use.
Additional repeater units are mounted in the same way. Suitable locations are out-
side of the confined area, for example, at a secondary exit or positioned at a differ-
ent location normally occupied by staff, in a safe position, within the building.
The CellarSafe is not suitable for outdoor or hazardous environments.
Figure 2.1 Where to locate and mount your CellarSafe unit
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