Toro Hydroject 3000, Troubleshooting Manual

Page: 79 / 84

TORO Hydroject® 3000/4000 Water System Testing 77
Review Questions
1. Minimum water system inlet flow is:
A. 4.3 GPM.
B. 3.4 GPM.
C. 5.4 GPM.
D. 1.1 GPM.
2. Accumulator pre-charge pressure is:
A. 5000 PSI.
B. 1000 PSI.
C. 90 PSI.
D. 2500 PSI.
3. Maximum water system relief valve pressure
setting is:
A. 5000 PSI.
B. 1000 PSI.
C. 90 PSI.
D. 2500 PSI.
4. Correct valve lift is:
A. .125 .250.
B. .090 - .102.
C. .009 - .0102.
D. .0125 - .0250.
5. Low accumulator pre-charge pressure is cause
by:
A. Water leaking past the seals and collecting on
top of the piston.
B. Accumulator overcharged with nitrogen.
C. Leaking water relief valve.
D. Accumulator undercharged with nitrogen.
6. Low water system pressure is caused by :
A. Leaking relief valve.
B. Low water supply flow.
C. Low pump output.
D. Worn injection nozzles.
E. All of the above.
F. None of the above.
7. Normal operating pressure of the water system
while aerating is:
A. 5000 to 5500 PSI.
B. 3500 to 4000 PSI.
C. 2500 to 3500 PSI.
D. 1000 to 3000 PSI.
8. Low valve lift is caused by:
A. Water valve housing not correctly shimmed to
cam housing.
B. Worn cam lobe.
C. None of the above.
D. All of the above.
9. High accumulator pressure is caused by:
A. Water leaking past the seals and collecting on
top of the piston.
B. Accumulator overcharged with nitrogen.
C. Leaking water relief valve.
D. Accumulator undercharged with nitrogen.
E. Both A & B.
10. The Accumulator pre-charge may decrease
because of normal operational losses.
A. True.
B. false.