Reciprocating Compressor Auxiliary Systems and Startup

Question 1

Four purposes for lubrication?

Answer 1

Reducing Friction/Wear
Preventing Corrosion
Cooling
Flushing Contaminants

Question 2

What is the most common lubrication system found in small single acting compressors?

Answer 2

Splash

Question 3

True or False;
Bearing clearances can have an effect on oil pressure.

Answer 3

True

Question 4

What two lubrication systems may be used to supply metered quantities of oil to compressor cylinders and packing?

Answer 4

Pump to Point
Divider Block

Question 5

What is a disadvantage of a pump to point lubrication system?

Answer 5

Requires multiple shut down alarm systems

Question 6

How many pumps are required for a divider block system?

Answer 6

1

Question 7

What is the purpose of the rupture disc in a divider block or a pump to point lubrication system?

Answer 7

Protects from over pressuring lubrication system.

Question 8

What device is installed at each lubricated point in a lubrication system to prevent gas from backing up into the system if the oil pump fails?

Answer 8

Check Valves

Question 9

True or False;
Purging air out of a lubrication system after servicing is not necessary.

Answer 9

False

Question 10

Why is it necessary to purge air and oxygen out of a repaired natural gas compressor before start up?

Answer 10

Prevent explosions

Question 11

What are two gases that are commonly used to purge hazardous gases from compressors prior to servicing?

Answer 11

Sweet Gas
Nitrogen

Question 12

Why is a hydraulic jack never used to block the crankshaft from turning?

Answer 12

seals can leak on hydraulic jack

Question 13

What should be done before starting a compressor after an overhaul?

Answer 13

Bar over at least 1 turn