GMJ 6035 M1, M2, M3 & M4 tasks

1. A radiator is cold at the top but warm at the bottom. What is the most likely issue?

• Radiator needs balancing

• Radiator needs bleeding

• Radiator valve is seized

• Boiler pressure is too low

Which tool is typically used to bleed a radiator?

• Adjustable spanner

• Radiator key

• Pipe wrench

• Allen key

A tap is dripping continuously. What is the most common cause?

• Water pressure is too high

• Pipe blockage

• Worn washer

• Loose spout

A tap is stiff and hard to turn. What maintenance should be done?

• Replace the handle

• Replace the washer

• Strip and lubricate the gland

• Install a pressure reducer

A radiator is cold while others are hot. It has no trapped air. What’s the next step?

• Replace the radiator

• Balance the system

• Increase boiler flow rate

• Refill the central heating system

Which sign indicates a radiator may need flushing?

• Radiator is hot at the top but cold at the bottom

• Radiator is noisy

• Radiator valve leaks

• Radiator has air bubbles

A tap continues to leak after washer replacement. What is the likely fault?

• Pipe corrosion

• washer is not seating due to debris inside the tap body

• Water pressure too low

• Spindle thread stripped

What is a key indicator of a leaking compression fitting under a sink?

• Hissing sound

• Rust marks

• Water staining or dripping

• Smell of gas

An upstairs hot tap has low pressure but cold tap is fine. What’s the likely issue?

• Frozen pipe

• Blocked hot tap filter

• Faulty cold water storage cistern

• Limescale in stopcock

A mixer tap delivers warm water but no cold. What should be checked first?

• Tap washer

• Boiler thermostat

• Cold water isolation valve

• Expansion vessel