Rothenberger RO 77 Manuel utilisateur

1ENGLISH

RO 77

rothenberger.com

MAN00149

RO 77

EN Instructions for use

2ENGLISH

Contents Page

1 Introduction ......................................................... 3

2 Operating instructions ........................................ 4

2.1 On/Off ............................................................................. 4

2.2 Turn on countdown....................................................... 4

2.3 Normal display............................................................... 5

2.4 Backlit display................................................................ 5

2.5 Max ................................................................................ 5

2.6 Hold................................................................................ 5

3 Checking for CO................................................... 6

3.1 Visual indicator .............................................................. 6

3.2 Audiable & vibrating alarm........................................... 7

4 Battery information............................................. 8

4.1 Replacing the battery .................................................... 8

5 Troubleshooting .................................................. 9

6 Specifications......................................................10

7 Cleaning ..............................................................10

8 Cold weather precautions..................................11

9 Electromagnetic compatibility ...........................11

ENGLISH 3

The RO 77 is used to monitor carbon monoxide (CO) levels in commercial

and residential living spaces, warehouse operations, combustion engine

repair facilities, public facilities and any other indoor areas where people

may work or live. The full-featured, compact design of the RO 77 allows for

easy use in almost any normal working environment. It is not designed for

use in areas designated as “confined spaces” where other toxic gases may

be present or in designated zoned areas where Intrinsic Safety products are

mandatory.

Features include:

• One button ON with Auto Zero

• Measures from 0 to 999 ppm CO

• Long life CO sensor with 5 year expected life

• Captures maximum value

• Preset Alarms

• Vibrating Alarm

• Visual three colour LED

• Audible tone

• Data Hold

• Back lit display

• Battery Indication

Warning

Carbon monoxide is life threatening even at relatively low concentrations.

Be sure you understand the risks before investigating potential leaks.

This monitor measures combustion gases that may be toxic in relatively low

concentrations. This monitor must only be used by trained and competent

persons after due consideration of all the potential hazards.

Users of portable gas monitors are recommended to conduct a “bump”

check before relying on the unit to verify an atmosphere is free from hazard.

A “bump” test is a means of verifying that a monitor is working within

acceptable limits by briefly exposing to a known gas mixture formulated to

change the output of the sensor. (This is different from a calibration where

the monitor is exposed to a known gas mixture but is allowed to settle to

a steady figure and the reading adjusted to the stated gas concentration of

the test gas).

1 Introduction

4ENGLISH

A bump test can be conducted using the disposable canister of CO primarily

used for checking domestic CO alarms.

Once the monitor is switched on every accepted button press is accompa-

nied by an audible beep.

On/Off

The RO 77 is operated by a single button for ON and OFF. It is designed for

use in ambient air, ranging in temperature from 0 to 40°C (32 to 104°F).

When the unit is switched ON by pressing and holding the ON button (Only

switch ON outdoors or where no CO is present), it automatically zeros in

50 seconds. During countdown the display shows time remaining as two

digits.

Be sure to switch on in fresh air well away from boiler flues, vehicle

exhausts, smokers and any other potential sources of CO.

The countdown starts at 50. When the countdown reaches 00 the meter

will set its sensor to zero and display CO concentration using three digits.

A battery level indicator will appear in the top left hand of the screen and

“ppm” will appear in the bottom right hand of the screen.

2 Operating instructions

2.1 On/Off

2.2 Turn on countdown

ENGLISH 5

Hold down for two seconds to switch meter OFF.

Quickly press to toggle the backlight on or off.

Note: using the backlight reduces the battery life.

Press to display the highest reading detected while the meter is

switched ON.

Press again to display current value

Holds value when button is pressed.

Freezes the display with the CO reading at the time the HOLD button is

pressed. Press again to display current value.

2.3 Normal display

2.4 Backlit display

2.5 Max

2.6 Hold

CO ppm

6ENGLISH

3 Checking for CO

Note: Ensure that the sensor grill at the front of the monitor is free

from obstruction.

The RO 77 can be used to check for spillage around fires or cookers but

does not replicate the functions of Appliance Sampling Probes as used in

the Room CO Test procedure that forms part of CPA1.

The RO 77 should not be exposed to high temperatures (anything above

40oC) or be used directly in streams exhausting from flues.

Warning

If CO levels in a room or space exceed 30ppm it is strongly recommended

that any appliances are switched off and that the space is evacuated and

ventilated before anybody returns to the area.

Where CO spillage (or migration) has been detected the procedures defined

for Room CO Testing as part of CPA1 should be adopted. If you are in any

doubt about what to do seek expert advice. Where CO spillage (or migra-

tion) has been detected the procedures defined for Room CO Testing as part

of CPA1 should be adopted. If you are in any doubt about what to do seek

expert advice.

The LED on the top of the RO 77 lights and changes colour when CO levels

increase or decrease.

OFF: 0-1 ppm

GREEN: 2-9 ppm

AMBER: 10-29 ppm

RED: 30 ppm or higher

These values are based on environmental and health standards as listed in

the table below.

3.1 Visual indicator

ENGLISH 7

*The effects can vary depending on size, age, sex and health. Kane is not

liable for the accuracy of this information.

An audible alarm will sound if 30 ppm CO (or greater) is detected. The

alarm frequency will increase with higher concentrations. The vibrator will

also vibrate. Check the LCD display for actual level. While the alarm is

sounding the unit can not be turned off but will switch off if the battery is

‘empty’.

The alarm functions will still operate when and are selected

although the reading on the display will not be the current reading but the

“Held” or “Max” values.

Concentration

of CO in Air

Inhalation Times and

Toxic Symptoms*

10 ppm

The maximum allowable concentration for an 8 hour

period without any known health risks according to the

Department of Health and BS7967.

30 ppm

The maximum allowable concentration for competent

persons to work in when investigating reports of fumes

according to BS7967.

200 ppm Mild headache, fatigue, dizziness and nausea after 2 to

3 hours.

400 ppm Frontal headache and nausea within 1 to 2 hours. Life

threatening after 3 hours.

800 ppm

Severe headache, dizziness and convulsions within

45 minutes. Unconsciousness within 2 hours. Death

within 2 to 3 hours.

1,600 ppm Headache, dizziness and nausea within 20 minutes.

Death within 1 hour.

3,200 ppm Headache, dizziness and nausea within 5 to 10 minutes.

Death within 30 minutes.

6,200 ppm Headache, dizziness and nausea within 1 to 3 minutes.

Death within 10 to 15 minutes.

12,800 ppm Death within 1 to 3 minutes.

3.2 Audiable & vibrating alarm

8ENGLISH

4 Battery information

Do not use the monitor when the battery symbol is showing low/empty.

Replace the battery immediately.

If the battery level falls to a level where the accuracy of the readings might

be compromised the monitor will eventually give both audible and visual

warnings before switching off.

Warning

Do not ignore the warnings as your monitor will no longer be functioning

and your safety may be compromised.

The battery compartment is located underneath the belt clip. To access the

battery compartment the belt clip must be lifted at its pivot end and be

rotated. The pivot is keyed to prevent rotation in normal use and is spring

loaded.

Full battery indication

Lower battery indication

Low battery

alarm indication

4.1 Replacing the battery

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5 Troubleshooting

If the display fails to stabilise at around zero within a few minutes this may

indicate an expired sensor or a sensor that has been exposed to excessive

levels of CO. If the symptom persists seek advice from Kane.

Always check for correct operation before each use. Use a known source of

CO taking care to act in a safe manner and not to expose the RO 77 sensor

to extreme temperatures or CO concentration. If the unit does not change

as expected, return the unit to Kane.

If during use, you detect CO leaks, be sure you know the appropriate ac-

tions to take to protect yourself and others. Before switching off the mon-

itor always expose it to fresh air until the reading falls below 5 ppm. Note

that the readings fall much more slowly than they rise so you may need to

wait some minutes.

Lift the clip at the pivot end against the spring by a few millimetres and then

rotate the clip clear of the battery compartment.

Remove the battery compartment cover and replace the battery. Alkaline

Duracells are recommended.

Always recycle the spent battery through an approved battery recycling

scheme.

Having fitted a fresh battery, replace the cover and rotate the belt clip back

to its normal position.

Always check your monitor for correct operation after replacing its battery.

10 ENGLISH

6 Specifications

7 Cleaning

¹ As per EN 50543 : 2011

² Based on ‘normal’ use without backlight or alarms

No user serviceable parts.

Re-calibrate every 12 months.

Check for correct operation as described in this manual before every use.

This product can be cleaned using a damp lint free cloth and a small

amount of non-abrasive detergent. Take care to avoid moisture entering

the sensor’s grill and after cleaning leave the product in a warm dry place

to allow any surface dampness to evaporate. Under no circumstance should

any solvent cleaner be used as this may cause damage to the plastic case,

display and sensor.

Range 0-999 ppm

Resolution 1 ppm

Accuracy ±3 ppm 0 to 100 ppm¹

±5% reading > 101 ppm±

Audible alarm Preset at 30 ppm

Visual alarm LCD and LED

Battery 9V alkaline

Battery life² Up to 250 hours using Duracall Procell

Ambient temperature 0-40°C (32-104°F)

Warranty 1 year

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