Pumps Chapter 2 pp 12-21

Question 1

From the Pump Manual:

<p>

| What type of displacement type priming pump, found on HALE PUMPS, does this department currently use?</p>

Answer 1

<p>

| rotary vane postive displacement type</p>

Question 2

From the Pump Manual:

The pump axle is mounted_ to the circular casing?

Answer 2

eccentric

Question 3

From the Pump Manual:

<p>
During operation of the rotary vane pump the axle rotates away from the \_\_\_\_\_ - where clearance is less, toward the discharge side?</p>

Answer 3

<p>

| suction side</p>

Question 4

From the Pump Manual:

Durning rotation of the rotary vane pump the area between the axle and casing _ and again _ near the discharge?

Answer 4

increase and decrease

Question 5

From the Pump Manual:

_ pump consists of two intermieshing gears revolving in opssite directions within a close fittting casing ?

Answer 5

rotary gear pump

Question 6

From the Pump Manual:

On what side of the rotary gear pump do the gears move away from each other and on what side do they move towards each other?

Answer 6

away on suction side and towards on discharge side

Question 7

From the Pump Manual:

<p>
In operation of the rotary gear pump, water or air is trapped between the teeth of the gears and the casing, and is carried to the...</p>

Answer 7

<p>

| ...discharge opening. </p>

Question 8

From the Pump Manual:

The meshing of the _ prevents the air or water from returning to the suction side

Answer 8

gear teeth

Question 9

From the Pump Manual:

How are the bearings of the priming pump lubricated?

Answer 9

entirely by oil from a tank connected to the pump

Question 10

From the Pump Manual:

What is the capacity of the oil tank on the priming pump and what type of oil should be used

Answer 10

4 to 6 quarts S.A.E. 30 motor oil

Question 11

From the Pump Manual:

What type of priming pumps are likely to be found on modern centrifugal pumps?

Answer 11

Electrical priming pumps

Question 12

From the Pump Manual:

Piping connects what part of the priming pump to the eye of the impeller of the centrifugal pump?

Answer 12

priming pump intake

Question 13

From the Pump Manual:

This department only utilizes_ which is a device that centrifugal fire pumps are equipped with to prevent the increase in pump pressure that occurs when a playpipe is closed.

Answer 13

relief valve

Question 14

From the Pump Manual:

What happens to the control valve when the pressure on the discharge side of the pump exceeds the pressure at which the controlling spring is set?

Answer 14

the control valve opens

Question 15

From the Pump Manual:

What is an effective guage that the churn valve has opened but does not indicate the degree of aperture opening?

Answer 15

lighted pilot light lamp

Question 16

From the Pump Manual:

With the churn valve open water flows from the_ side to the _ side of the pump?

Answer 16

discharge side to suction side

Question 17

From the Pump Manual:

If you set the relief valve without water flowing what will happen to the pump pressure when the play pipe is opened?

Answer 17

pump pressure will decrease

Question 18

From the Pump Manual:

When testing a relief valve to see if its working properly you use a pump pressure of at least _ psi over the hydrant or intake pressure?

Answer 18

50 psi

Question 19

From the Pump Manual:

A discharge of at least _ gpm will provide a good test when checking to see if the relief valve is operating properly?

Answer 19

100 gpm

Question 20

From the Pump Manual:

If the increase in pressure is greater than _psi when the pipe is closed it indicates that the relief valve is not working properly?

Answer 20

30 psi

Question 21

From the Pump Manual:

If the pump pressure _the original psi when the pips is opened indicates that the relief valve is not working properly?

Answer 21

drops below

Question 22

From the Pump Manual:

How are pump packings lubricated and what happens when the pump is in operation?

Answer 22

lubricated by water and small amount of the water should run from the packings

Question 23

From the Pump Manual:

The oil in the pump transmission shall be kept how on the bayonet guage?

Answer 23

between the high and low level mark

Question 24

From the Pump Manual:

What type of oil should be used for the pump transmission?

Answer 24

S.A.E. 90 weight gear oil

Question 25

From the Pump Manual:

Who checks and maintain the pump transmission?

Answer 25

fleet maintenance