WorksheetsMaintenance and Inspection Quiz
Total questions: 68
Worksheet time: 34mins
What should be inspected if the flow rate is less than the required manufacturer's instructions or if a customer notices a drop in the flow rate?
Temperature settings on thermostat
Limescale blockages
Filters cleaned
All of the above
Which of the following is NOT a potential cause of poor flow rate?
Temperature settings on thermostat
Limescale blockages
Filters cleaned
Pipe size too large
What is one of the indicators that an inspection is needed for maintenance?
Increase in temperature
Drop in flow rate
Noise from the system
Change in color of the fluid
What can cause unbalanced pressure in manually controlled showers?
Properly balanced pressure
Debris partially blocking the feed pipework
Regular maintenance
Correct temperature settings
Which of the following is NOT listed as an indicator for maintenance in the document?
Temperature settings on thermostat
Limescale blockages
Filters cleaned/pipework inspected
Electrical wiring issues
What is the effect of debris partially blocking the feed pipework in a shower?
Increased water pressure
Decreased water temperature
Unbalanced pressure affecting flow rate and temperature
Improved water flow
Which maintenance task involves ensuring that parts move smoothly?
Temperature settings on thermostat
Limescale blockages
Filters cleaned/pipework inspected
Lubrication of parts
What can cause an isolation valve to pass water?
Build-up of limescale
Lack of lubrication
Incorrect installation
Overuse of the valve
Which of the following is NOT a recommended maintenance step for a valve?
Dismantle valve
Remove debris or lime scale
Check seals on shower body
Increase water pressure
What should be done if an isolation valve has a damaged O ring?
Increase water pressure
Replace the valve
Ignore the issue
Paint the valve
Which of the following is a sign that an isolation valve may need maintenance?
The valve is new
The valve is passing water
The valve is painted
The valve is lubricated
What are some common causes of leaks in components?
Proper installation
Components being insulated
Components being frozen
Components being new
Which of the following is NOT a recommended action to address leaks?
Tighten compression fitting nut
Repack glands/O rings
Replace part
Ignore the leak
What is one of the maintenance actions to prevent leaks?
Over-tighten all parts
Lubricate parts
Leave parts as they are
Use parts without insulation
What causes expansion noise in hot water or central heating pipework?
The contraction of the pipes
The expansion of the pipes as heated water passes through
The insulation of the pipes
The notching of the pipes
Which of the following is NOT a recommended inspection for addressing expansion noise in pipework?
Inspect clips/brackets
Inspect notching
Inspect insulation and padding
Inspect the water temperature
What is the maximum flow velocity of water to avoid audible noise according to BS6700?
2 m/s
3 m/s
4 m/s
5 m/s
What can be used to reduce noise when cisterns refill?
Increase the pipe diameter
Install a pressure reducing valve
Use collapsible silencers
Decrease the pipe diameter
Which of the following is NOT a suggested method to reduce flow noise?
Increase the pipe diameter
Install a pressure reducing valve
Use collapsible silencers
Increase the water pressure
What is a common complaint when the CWSC is refilling after hot water has been used?
Water hammer
Air lock
Low water pressure
Leaking tap
What can cause a juddering sound in the pipework as the FOV shuts off?
Air bubbles
Water hammer
Loose pipe fittings
High water pressure
Which of the following is NOT a recommended action to address water hammer?
Inspect FOV and tap washer
Install flow restrictor
Change to an equilibrium valve
Increase water pressure
What happens if the thermostat fails open?
The customer will have no hot water.
The temperature will continue to rise.
The water will become too cold.
The system will shut down.
What is a potential danger if the thermostat fails closed?
The temperature will continue to rise to dangerous levels.
The water will become too cold.
The system will shut down.
The customer will have no hot water.
What should be done if the thermostat fails?
Replace the cylinder stat.
Replace the water heater.
Replace the thermostat with a new one.
Replace the entire system.
Which of the following is an indicator of thermostat failure?
No hot water.
Cold water warming up.
Steam in loft area.
All of the above.
What is a common fault in immersion elements in direct cylinders?
Overheating
No hot water
Excessive noise
Water leakage
What is an indicator of immersion element failure?
Water leakage
Excessive noise
Fuse blowing
Overheating
What should be done to replace an immersion element?
Follow manufacturer's manual
Comply with Building Regulations Part P
Use any available replacement
Call a plumber
What is a common cause of no hot water in a heating system?
Faulty thermostat
Failure of heat source
Blocked pipes
Low water pressure
What should be checked first if there is no hot water due to a failure of the heat source?
Water pressure
Thermostat settings
Fuse and time clock settings
Radiator valves
Who should be arranged to rectify a boiler issue?
An electrician
A plumber
A Gas Safe engineer
A handyman
What should be done to replace an immersion heater?
Follow manufacturer's instructions
Comply with Building Regulations part P
Hire a general contractor
Use a DIY kit
What happens if the coil fails in the system described?
The pressure from the CWSC is less than the pressure from the F&E cistern.
Water is forced into the secondary system.
The warning pipe on the F&E discharges.
The hot water remains clear.
What is an indicator of a coil failure in the system?
F&E overflow is dry.
Hot water is clear.
F&E overflow is dripping.
Cold water is discoloured.
What should be done if the coil fails?
Replace the cylinder with a current approved part L cylinder.
Increase the pressure from the CWSC.
Decrease the pressure from the F&E cistern.
Ignore the issue.
What is a common fault that can occur in a single feed cylinder or certain unvented cylinders?
Overheating of the water
Loss of air bubble
Excessive water pressure
Water leakage
What happens to the hot water in a single feed cylinder when there is a loss of air bubble?
The hot water will be clear
The hot water will be discoloured
The hot water will be cold
The hot water will be over-pressurized
What will the pressure relief valve do in an unvented cylinder when the water is heated and there is a loss of air bubble?
It will remain closed
It will discharge
It will overheat
It will leak
What needs to be done to the secondary system in both single feed and unvented cylinders to reinstate the air bubble?
The system needs to be heated
The system needs to be drained to the base of the hot water cylinder
The system needs to be pressurized
The system needs to be replaced
What is the final step to reinstate the air bubble in the system?
The system can be refilled
The system can be replaced
The system can be heated
The system can be pressurized
What is a sign that water is boiling in a heating system?
The water is lukewarm when drawn off.
There is no steam in the loft area.
The open vent is discharging and water is dangerously hot when drawn off.
The water is cold when drawn off.
What should be done if old immersion heater thermostats are found?
They should be left as they are.
They should be replaced with new immersions that contain a non self-resetting thermal cut out.
They should be replaced with the same old immersions.
They should be disconnected permanently.
What happens if a cylinder stat fails?
The water will stop heating.
The water will continue to heat and be controlled by the boiler stat, which should cut out at approximately 80-85ºC.
The water will cool down immediately.
The water will be controlled by the immersion heater.
What is one reason cold water can warm up in a plumbing system?
Cold water pipes are too far from hot water pipes.
Cold water pipes are made of metal.
Heat from the hot water pipe transfers to the cold water pipe.
Cold water pipes are insulated.
How should hot water pipes be installed to avoid the transfer of heat to cold water pipes?
Below cold water pipes.
Above cold water pipes.
Next to cold water pipes.
Inside cold water pipes.
What should be done to hot water pipes to avoid heat loss?
Paint them.
Insulate them.
Expose them to air.
Use plastic pipes.
What happens if the hot water cylinder overheats?
The vent pipe discharges into the CWSC.
The cold water pipe bursts.
The hot water pipe freezes.
The hot water pipe leaks.
According to BS8000 pt15, where should the hot pipe be installed in relation to the cold pipework?
Below the cold pipework.
Above the cold pipework.
Next to the cold pipework.
Inside the cold pipework.
What is a common cause of air locks in low pressure systems?
Incorrect installation of pipework
High water pressure
Vertical pipework
Properly installed pipework
What is an indicator of air locks in a pipework system?
Continuous water flow
No flow of water or intermittent water flow
High water pressure
Constant water temperature
What is a recommended solution to prevent air locks in pipework?
Increase water pressure
Install pipework correctly
Use vertical pipework
Decrease water temperature
What is a common cause of blockages in a system according to the maintenance document?
Excessive water flow
Debris in the system
High temperature
Low pressure
What should be done at the commissioning stage to prevent blockages?
Increase water pressure
Reduce water temperature
Flush out the system to remove any debris
Add more filters
What is an indicator of a blockage in the system?
High water pressure
Restricted water flow
Increased water temperature
Unusual noise
Which of the following is NOT a recommended action to address blockages?
Remove and clean filters
Trace draw off points and pipework to locate blockage
Remove and replace
Increase water temperature
What is a common issue in hard water areas that can cause blockages and reduce efficiency?
Rust
Limescale
Algae
Mold
Which of the following is an indicator of limescale buildup?
Increased water flow
Clear water
Reduced water flow
Soft valves
What is a recommended solution to prevent limescale buildup?
Install a water filter
Install a water softener or a scale inhibitor
Use hot water only
Clean with vinegar regularly
When dealing with faults in a system, which of the following should you always check first?
Software updates
Temperature settings
User manuals
Network connections
Which of the following is NOT listed as a basic check for faults in the provided material?
Timer settings
Fuse
Water treatment
Software compatibility
According to the material, what should be checked regarding water in a system?
Water pressure
Water treatment
Water temperature
Water flow
Which of the following is included in the basic checks for faults?
User permissions
Installation and connections
Software licenses
Data backups
What can cause maintenance problems in plumbing systems?
Soft water
Temporary hard water
Distilled water
Rainwater
At what temperature does hard water lose its calcium and form limescale?
50°C
60°C
65°C
70°C
What is one of the effects of limescale in plumbing systems?
It purifies the water
It insulates the water from the heat source
It cools the water
It increases water flow
What is another effect of limescale in plumbing systems?
It causes blockages
It prevents corrosion
It enhances water taste
It reduces water pressure
What should be done to hard water before it enters a domestic water system?
It should be cooled
It should be treated
It should be filtered
It should be boiled
