Components

Question 1

What does the pulsation bottle do?

Answer 1

Provides steady, uniform air flow stream from 6th stage

Question 2

What type of cooler is the air cooler? What’s special about it and how many?

Answer 2

Shell and tube, U-bend type, 6 in total, uses zinc anodes

Air flows in tubes, sea water flows in shell

Question 3

Fresh water heat exchanger type, how many passes?

Answer 3

2 passes, fresh water in shell, sea water in tube.

Question 4

How full should the surge tank be?

Answer 4

3/4ths full

Question 5

TRV factory setting and what temps need to be maintained for it?

Answer 5

120°F, 120 to 130

Question 6

What type of indicator is a sight flow for condensate?

Answer 6

Impingement type

Question 7

What type of indicator is the sight flow for surge tank?

Answer 7

Paddle wheel or impeller type

Question 8

How long is oil pressure relay timer?

Answer 8

12 seconds

Question 9

What type of check valve is after stages 1 through 5?

Answer 9

Spring and ball type

Question 10

Name the 5 major components of the HPAC

Answer 10

Sub base, crank case, frame extension, uni block, upper stage.

Question 11

What valve is known at the “priority valve”

Answer 11

Back pressure regulator

Question 12

What type of seal protects against air in the upper stages?

Answer 12

Teflon omni seal

Question 13

How many single action crossheads are in HPAC

Answer 13

2 through 6

Question 14

Which discharge vales are not interchangeable

Answer 14

3rd and 4th stage

Question 15

Frame oil header does what? Where is it?

Answer 15

Internal oil pipe, directs oil from the pump to the main and thrust bearings inside crank case

Question 16

What type of oil pump does HPAC have?

Answer 16

Gerotor

Question 17

What is the back up to the oil wiper ring?

Answer 17

Oil flinger

Question 18

Where is the air rod located at?

Answer 18

Bottom of cylinder block