Emergency Power Unit (EPU)

Question 1

EPU is

Answer 1

12 volt dc electric motor and a 1.5 rpm at 2000 psi pump

Question 2

EPU operation is

Answer 2

independent of the aerial electrical system and PTO switch should be turned off.

Question 3

Rated for a maximum of

Answer 3

3 minutes continuous operation. Extending this period of time will cause the unit to fail.

Question 4

EPU can be used over a long period of time at a

Answer 4

7% duty cycle, which is approx 21 seconds in everything 5 minutes.

Question 5

Retracting Aerial: activate the ______ mounted forward of the turntable read step

Answer 5

Blocking solenoid

Question 6

Retracting Aerial: Activate ____ and operate appraise controls to bed the aerial. This is ____ operation

Answer 6

EPU / two person

Question 7

Retracting Aerial: After aerial is bedded, ______

Answer 7

return the blocking solenoid to its original position

Question 8

Retracting Outrigger: Open override control cabinet, pull red handle and hold the blocking solenoid valve. This _____.
Activate the ___. Must be done simultaneously

Answer 8

shuts off hydraulic fluid to the aerial system and directs flow to the outrigger valve bank. EPU

Question 9

Retracting Outrigger: Activating the appropriate buttons on the outrigger valve bank, ___

Answer 9

the vale spool is physically shifted for the corresponding circuit.