Pumps & pumping

Question 1

Pumps & Pumping

How long will your tanks supply last using the Rosenbauer project II if the tank is not augmented?

Answer 1

2 mins

Question 2

Pumps & Pumping

Why is it important that the air is dumped before using the pump?

Answer 2

It tilts the tank towards the pump improving pump effiency

Question 3

Pumps & Pumping

When should the compound gauge be monitored?

Answer 3

During all pumping operations

Question 4

Pumps & Pumping

How long will your tanks supply last using the Rosenbauer SelectFlow RB101 if the tank is not augmented?

Answer 4

3 minutes

Question 5

Pumps & Pumping

When three lights are illuminated on a Series II Mercedes water tank contents indicator, the auto fill valve is….?

Answer 5

Fully open

Question 6

Pumps & Pumping

What is the maximum distance between pumps when using 90mm hose on level ground?

Answer 6

90mm hose - 15 lengths

Question 7

Pumps & Pumping

When working from a hydrant, what actions should be taken when the autofill valve is set to open, the flow meter has a zero reading & the hosereel tank is half full?

Answer 7

Open the emrgency bypass valve which is located in the o/s rear locker

Question 8

Pumps & Pumping

What is the pressure loss rate for all hose due to gravity?

Answer 8

0.1 bar per metre

Question 9

Pumps & Pumping

What would be the FIRST sign of an appliance autofill valve failing in the closed position?

Answer 9

The tank contents would fall below three quarters and the flow gauge would continue to register zero

Question 10

Pumps & Pumping

Once the pump bypass lever has been engage how much water will be supplied direct to the tank?

Answer 10

1000 litres per minute

Question 11

Pumps & Pumping

You are connected to an Aerial (ALP/TL) or dry riser, what is the maximum pressure you would charge them to?

Answer 11

10 bar

Question 12

Pumps & Pumping

What is an appliance pump’s default pumping pressure setting?

Answer 12

High pressure

Question 13

Pumps & Pumping

How many Litres/min will be delivered through the hosereel @ 35 bar?

Answer 13

100

Question 14

Pumps & Pumping

Why should the pump operator switch to low pressure mode as soon as hose reel jets are not required?

Answer 14

The maximum available low pressure flow rate may be impaired if high pressure mode remains selected when it is not required

Question 15

Pumps & Pumping

When four lights are illuminated on a Series II Mercedes water tank contents indicator, how many litres of water are in the appliance tank?

Answer 15

Approximately 1350 litres

Question 16

Pumps & Pumping

What are the frictional loss rates for 70mm delivery hose?

Answer 16

0.2 Bar per length @ 500 l/min

Question 17

Pumps & Pumping

A full tank of fuel will allow an appliance to pump for approximately how long?

Answer 17

4 hours

Question 18

Pumps & Pumping

What size hose is used for water relaying by pumping appliances?

Answer 18

90mm hose and 70mm hose

Question 19

Pumps & Pumping

With one hose reel jet in use approximately how long will a full tank of water last?

Answer 19

Approx 15 minutes

Question 20

Pumps & Pumping

What should the pump operator do if the autofill valve fails in the fully closed position?

Answer 20

Pull the bypass lever in the offside rear locker to divert water directly to the tank

Question 21

Pumps & Pumping

How far from the hydrant should the initial pump be?

Answer 21

As close as possible to receive maximum flow from hydrant, and no more than 3 lengths and always twinned. Every additional length reduces flow to pump.

Question 22

Pumps & Pumping

What pressure range does the Rosenbauer SelectFlow RB101 operate?

Answer 22

3 to 6 bar

Question 23

Pumps & Pumping

What is the optimum pressure /flow rate for the Rosenbauer Project II branch set to solid core jet?

Answer 23

7 Bar & 630 l/min

Question 24

Pumps & Pumping

What does the high pressure gauge indicate?

Answer 24

Water pressure being delivered to the hose reel jets

Question 25

# Pumps & Pumping A sudden decrease in pressure at the low pressure gauge could indicate what?

Answer 25

A burst delivery hose length

Question 26

# Pumps & Pumping What is the maximum working pressure of delivery hose?

Answer 26

15 Bar

Question 27

# Pumps & Pumping When three lights are illuminated on a Series II Mercedes water tank contents indicator, how many litres of water are in the appliance tank?

Answer 27

Approximately 1000 litres

Question 28

# Pumps & Pumping How do we connect 90mm to a pumping appliances?

Answer 28

90mm Storz hose tail adaptors

Question 29

# Pumps & Pumping What is the maximum distance between pumps when using 70mm hose on level ground?

Answer 29

8 lengths

Question 30

# Pumps & Pumping A sudden increase in pressure on the low pressure gauge could indicate what?

Answer 30

A branch being closed

Question 31

# Pumps & Pumping When should the compound gauge be monitored?

Answer 31

During all pumping operations

Question 32

# Pumps & Pumping How can a hydrants flow rate be assessed?

Answer 32

Drop tank level until 2 lights are illuminated and turn on auto fill valve digital display

Question 33

# Pumps & Pumping What is the main fire brigade pump used on appliances and lightweight portable pumps?

Answer 33

A centrifugal pump

Question 34

# Pumps & Pumping What pressure range does the Rosenbauer Project II operate?

Answer 34

3.5 to 7 bar

Question 35

# Pumps & Pumping What should the pump operator do when the reversing alarm sounds?

Answer 35

Check the cab

Question 36

# Pumps & Pumping When lifting from open water what is the maximum theoretical and maximum practical lift possible?

Answer 36

Max theoretical: 10 metres Max practical: 8 metres

Question 37

# Pumps & Pumping How many lengths of twinned 90 mm hose can pumps be apart in a water relay on an uphill gradient ground?

Answer 37

12

Question 38

# Pumps & Pumping What is the optimum pressure /flow rate for the Rosenbauer SelectFlow RB101 branch set to solid core jet?

Answer 38

6 Bar & 400 l/min

Question 39

# Pumps & Pumping You are the pump operator of an appliance connected to a hydrant by twin 70mm hose and supplying a single 45mm jet. Your appliance tank is full, how could you tell if the Autofill valve has failed in the closed position?

Answer 39

Flow meter reads zero, water tank contents lights start to flash and then go out, hydrant hose is rock hard.

Question 40

# Pumps & Pumping What are the frictional loss rates in 45mm delivery hose?

Answer 40

1 bar per length

Question 41

# Pumps & Pumping What will cause the pump bay switches to return to their default setting?

Answer 41

Appliance being placed in drive or the PTO being disengaged

Question 42

# Pumps & Pumping Why does delivery No1 have a lesser performance than the others?

Answer 42

There is a bend in the pipe making No1 less efficient

Question 43

# Pumps & Pumping What does the compound gauge indicate?

Answer 43

The pressure of the water supply coming into the pump, with a vacuum reading (negative pressure) when lifting from open water and a pressure reading (positive pressure) when the supply is augmented from a hydrant.

Question 44

# Pumps & Pumping What should the pump operator do when the thermal relief valve operates?

Answer 44

Open an outlet slightly