Understanding Circulator part 6 Controls

What is the purpose of the washers in the circulator system?

• To increase pressure

• To maintain a watertight seal

• To reduce noise

• To enhance flow.

The full bore valves on either side of the flanges can be closed to allow the pump to be removed without ________ the system.

• filling

• draining

• heating

• cooling

What is one of the reasons for the correct positioning of the circulator in a system?

• To increase water temperature

• To avoid corrosion by aeration

• To reduce water flow

• To enhance system noise.

The correct positioning of the circulator is important to avoid corrosion by ________ of the system water.

• heating

• aeration

• cooling

• filtration

What is the purpose of adding an inhibitor to the system water?

• To increase temperature

• To reduce corrosion and scale build-up

• To enhance water flow

• To decrease pressure

The neutral point of the system is at the base of the ______, where it joins the system.

• hot feed

• cold feed

• pump

• vent

What is the correct sequence for the circulator to ensure positive pressure?

• PUMP -> COLD FEED -> VENT

• VENT -> COLD FEED -> PUMP

• COLD FEED -> VENT -> PUMP

• PUMP -> VENT -> COLD FEED

Fill in the blank: If the sequence VENT -> COLD FEED -> PUMP is not followed, the system water could be circulated under a _______ pressure, leading to corrosion.

• positive

• negative

• neutral

What is the importance of the circulator's position in a system requiring positive pressure?

• It helps in maintaining negative pressure.

• It is crucial in relation to the cold feed and vent pipe.

• It is not important.

• It only affects the temperature.

In a system under positive pressure, the correct arrangement shows the position of the vent and feed behind the pump. This is known as the ______ zone.

• active

• neutral

• passive

• dynamic