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WorksheetsQuiz on Analyser Usage and Safety Standards
Total questions: 29
Worksheet time: 15mins
Which manufacturer's instructions should you always read?
Any manufacturer's
Only Anton
Only Kane
Only Blue Laser
What is the standard mentioned to aid in the correct use of the analyser?
BS 7465 2015
BS 7967 2015
BS 8067 2015
BS 8567 2015
What initial reading should the oxygen level show in fresh air?
19.9%
21.5%
20.9%
18.9%
What should you do if you suspect incorrect readings?
Ignore them
Replace the analyser
Perform a leak test
Change the battery
What is the maximum CO reading for an appliance to be deemed safe?
500 ppm
400 ppm
300 ppm
350 ppm
When should you start analysing the flue gas of a boiler?
At the beginning
After 5 minutes
After 15 minutes
How long should you wait for a stable reading?
5 minutes
10 minutes
15 minutes
20 minutes
What is the purpose of the flue integrity test?
Check for gas leaks
Check the boiler's efficiency
Check the flue seals
Check the water pressure
What is the minimum oxygen level required for the flue integrity test?
19.9%
21.0%
20.6%
20.0%
What should you do if the CO reading exceeds 200 ppm during analysis?
Continue analysing
Turn off the analyser
Ignore it
Call the manufacturer
How long should you let the boiler run before taking readings?
5 minutes
10 minutes
15 minutes
20 minutes
What is the average CO2 reading for high-efficiency boilers?
6.2-8.2
7.2-9.2
8.2-10.2
9.2-11.2
How deep should the probe be inserted when analysing from the outside?
100 mm
150 mm
200 mm
250 mm
What is a sign that the flue seals are compromised?
High CO2 levels
Low oxygen levels
Rusty boiler casing
Low water pressure
How often should you check the flue gas analyser for air leaks?
Daily
Weekly
Monthly
When suspecting incorrect readings
What should the CO2 level be during the flue integrity test?
Greater than 0.5
Less than 0.2
Equal to 0.3
Greater than 0.4
What does a CO reading of more than 3 ppm during a sweep test indicate?
Test point left off
Proper seal
High efficiency
Low efficiency
How long should a sweep test be conducted?
1 minute
2 minutes
3 minutes
4 minutes
What is the purpose of the sweep test?
Check water pressure
Check gas pressure
Check for CO leaks
What should you do if you get high CO readings at the beginning of the analysis?
Turn off the boiler
Adjust the readings
Wait for it to stabilise
Ignore the readings
What is the correct way to turn off the flue gas analyser?
Directly switch off
Make sure all readings are zero
Remove the probe first
Turn off the boiler first
What does a CO2 ratio of 0.0004 indicate for a condensing boiler?
Unsafe
Safe
At risk
Immediately dangerous
What is the first step when using the flue gas analyser?
Turn on the boiler
Connect the standard probe
Insert the temperature probe
Press the test menu button
How long is the probe for the flue gas analyser?
100 mm
150 mm
200 mm
250 mm
What should you do if the analyser shows a CO reading of 87 ppm?
Continue analysis
Ignore the reading
Investigate further
Turn off the boiler
What is the CO reading threshold for condensing boilers to be deemed safe?
0.0004
0.0008
0.0012
0.0016
What is the significance of a high CO reading at the beginning of the test?
Normal for high-efficiency boilers
Indicates a leak
Indicates low efficiency
Indicates a faulty analyser
What should you do if the analyser gives a warning signal for high CO readings?
Continue analysis
Turn off the analyser
Adjust the boiler
Wait for it to stabilise
How should you start the flue gas analysing procedure?
With the boiler on high fire
With the boiler off
With the boiler on minimum fire
With the boiler in standby
