Cold Water Supply Systems L3P1,U5,LO2.1.p2.

What is the purpose of the accumulator in a pumped supply with pressure control system?

• To sense pressure drop on the system

• To control the level of water in the cold water storage cistern

• To filter and sterilize the water

• To maintain system pressure and store water for use when the pump is not running

What is the usual operating pressure range for pumped supply with pressure control systems?

• 3 to 5 bar

• 5 to 7 bar

• 7 to 10 bar

• 1.5 to 3 bar

What is the purpose of the non-return valve or check valve in the pumped supply with pressure control system?

• To control the level of water in the cold water storage cistern

• To sense pressure drop on the system

• To maintain system pressure and store water for use when the pump is not running

• To prevent backflow of water into the accumulator

What is the purpose of the electrically operated float switch in the pumped supply with level control system?

• To control the level of water in the cold water storage cistern

• To sense pressure drop on the system

• To prevent backflow of water into the accumulator

• To maintain system pressure and store water for use when the pump is not running

What is the effect of turning on a tap in a pumped supply with pressure control system?

• The pump is switched on and the cistern requires water

• The cistern continues to fill until the water level is high enough to close the float switch

• The pump starts and the system pressure is maintained

• The pressure forces water out of the accumulator

What is the effect of turning off a tap in a pumped supply with pressure control system?

• The pressure forces water out of the accumulator

• The pump continues refilling the accumulator until it is at full pressure and capacity again

• The cistern requires water and the pump is switched on

• The pump starts and the system pressure is maintained

Starting at the top and working down the accumulator

S_______ under protective cap.

A__ compresses under pressure.

Bladder is made from S________ rubber.

contents of the blue shaded area _____

(a)