309 Sanitation systems 1 Quiz

If a macerator ran for a long time after flushing, what could be the problem?

• Blockage in the area of the pump within the unit

• Excessive volume of solids

• Incorrect electrical connection

• Timer requiring resetting

Where can appliance discharge rates be obtained?

• The data plate on an appliance

• British Standards

• The clerk of the works

• The Building Regulations

If a waste water lifter pump began to cycle on and off, what could be the reason?

• Intermittent electrical fault on the supply connection

• Excessive volume of waste being processed

• A dripping tap or leaking connection in the house

• A designed self-priming process

When servicing a sink waste disposal unit, you discover an excessive amount of debris in the unit. How would you proceed?

• Safely isolate the unit and remove the debris

• Ask the end user questions to ascertain the origin of the debris

• Safely isolate the unit and decommission

• Flush with clear water

Which of the following make an air admittance valve (AAV) unsuitable for sanitary pipework installations?

• Venting to atmosphere at intermittent points on the run of the drain

• The inclusion of a stub stack

• An interceptor trap

• A waste water lifter

Which of the following best describes a cesspool?

• An installation which processes solids and liquids

• A pit where debris naturally permeates into the water table

• A receptacle which stores effluent that is later used as a fertiliser

• An installation that stores solids and liquids that are removed at a later date

Who should be consulted before the beginning of servicing or any type of remedial work on a sanitary appliance?

• The local authority

• The manufacturer

• The customer

• The previous installer

If a problem has been reported about the operation of a waste water lifter, what would be the first step to take to help analyse the issue?

• Talk to the previous installer and seek their advice

• Order parts based on discussion with the client

• Do not operate appliance; dismantle basic components

• After talking with the customer, operate the appliance and check for operation, in accordance with the manufacturer’s instructions

How should the floor surface of a walk-in wet room be installed?

• On a flat plane

• With an angle which falls to a central or perimeter gully

• With non-porous tiles

• With a fallout of the wet room area to an external gully

How much trap seal should remain after the full performance testing procedure has been completed?

• 10mm

• 50mm

• 75mm

• 25mm