Understand the basic maintenance requirements of hot water systems
Quiz by Ricky Fleet
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12 questions
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- Q1A customer complains that they have boiling water from the tap, they have an open vented system with direct cylinder fed via an immersion heater. What is the most likely cause of the problem?The boiler thermostat is faultyA split coil on the cylinderThe immersion is brokenThe immersion thermostat being faulty30s
- Q2Brown water is discharging from the outlets; they are fed via a single feed indirect cylinder. What is the most likely cause of this?Loss of air bubble within the cylinderBlocked filterA leaking cylinder coilLime scale build-up30s
- Q3Upon inspection of a hot water system a large build-up of lime scale is discovered. What is the most likely cause of this?Soft water in the systemLack of heat in the secondary waterExcess heat in the secondary waterAirlock in the system30s
- Q4What is the most suitable way of reducing lime scale build-up in a hot water system?Water softenerIn line strainerPressure reducing valvePressure relief valve30s
- Q5What is the component within a hot water cylinder that is designed to prevent galvanic corrosion?Pressure relief pipeGalvanic anodeMagnetic filterSacrificial anode30s
- Q6A customer has intermittent flow of hot water from their bath tap – what is the most likely cause of the problem?Too little head pressureToo much head pressureAir lockFaulty float operated valve30s
- Q7To prevent electrolytic corrosion taking place in a system, where can the magnesium rod be placed?CirculatorHot water cylinderCold water storage cisternOpen vent30s
- Q8One of the functions of an open vent pipe is to prevent syphonic tendencies within the system fromExploding the cylinderCausing undue heat loss from the cylinderCollapsing the cylinderCausing increased water turbulence resulting in excessive noise30s
- Q9Spray from a shower head has reduced to a dribble, what is the common cause?Soft water has caused lime scale to accumulate on the rosePermanent hard water has caused lime scale to accumulate on the roseTemporary hard water has caused lime scale to accumulate on the roseWater has been turned off to the appliance30s
- Q10When running a hot tap, the customer complains about a strange creaking noise. What could be the problem?Lack of insulation material allowing thermal expansionSplit tap washerThermal expansion causing the pipes to expand and rub against a surfaceFloat operated valve washer damaged to CWSC30s
- Q11The customer complains that the cold tap to their wash hand basin runs hot intermittently, before turning cold. What could the problem be?The radiator in the bathroom is too hotHot pipework has been incorrectly installed to the cold pipeHot pipework is installed below or too close allowing heat transfer to occurCylinder coil split30s
- Q12Which of the following are considered water treatment methods?All of the aboveMagnetic softenerElectrolytic softenerUnit water softener30s