Generator System

Question 1

Describe the generator system in detail to include the following:

Answer 1

66 generators for building; 16 cylinders in each generator; no spark plugs, heater core. 4-pole generator

          Basic component identification  

Fuel System, Alternator, Engine, Battery Charger, Control Panel, Coolant System, Oil System

           Internal Combustion Engine 

Four Stroke – Intake, Compression, Combustion, Exhaust

C175

16 cylinder

84.8L

         Generator running parameters 

Ozone Season: (7am-5pm) May – September

Exceptions: Testing after Installation, Emergency, Maintenance

1800 RPMs = 480V/277V

180 degrees coolant temp

100 PSI fuel

         Maintenance requirements 

Monthly unloaded runs

Quarterly loaded runs

Semi-annual inspections

Yearly filter change

          Maintenance Scope of Work 

Oil Change, Filter Change, Check Coolant/Oil Levels

          Alarming Set Points 

Overspeed = 1860 RPM

Low Oil psi = 30 psi

Fuel – 72 psi

Over temp = 220 degrees

Question 2

What actions will a Facility Engineer take if the suite goes on generator?

Answer 2

Engineer will be sent down by the lead to the effected electrical room to confirm the breaker closed for the generator and the utility opened and is supplying proper voltage. Check generator and take logs every 15 minutes. Report fuel rates and figure how long the generator can run and investigate the cause of the generator starting. Record the time and what has been done as well as the affected suite.

Question 3

How many gallons of fuel do we maintain in each generator at full capacity? What percentage of the overall above ground storage tank capacity do we maintain in each tank? If asked for a thumb rule, approximately how many gallons of fuel are there in each inch of fuel in an average AST on campus?

Answer 3

House Gen 1 – 1,000 gallons

House Gen 2 – 2,000 gallons

Most - 5,900 gallons
155 gallons per inch

Customer Red – 10,900 gallons
272 gallons per inch

90%

Question 4

Describe the importance of the generator enclosure dampers. What immediate actions are necessary if they fail to open during a generator load test?

Answer 4

Airflow, prevent overheating

Open the doors if you are able, if not, monitor closely and secure if necessary

Dampers fail open so if they don’t open it’s possible to manually open them.

Question 5

Describe the operation of the Veeder Root system, to include the following:

What type of detector is used to determine fuel level?

Answer 5

Float Sensor
Probe sensor

  Ullage required within our generator tanks 

10% for expansion

(Fuel guys) Fosters – call around 60%

150 gallons per inch