Priming system test (dry vacuum test), Figure 5-1: priming valve handle – Hale Q Series Muscle User Manual

Page 80

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Preventive Maintenance

78

MUSCLE (Midship) Pumps Installation, Operation, and Maintenance Manual

p/n: 029-0020-63-0

2.

All bolts are tight. Use a torque wrench and torque bolts to the drive train manu-
facturer's recommended specifications.

3.

Bolts used are “Grade 5” minimum for mounting and “Grade 8” minimum for the
driveline.

Priming System Test (Dry Vacuum Test)

(Refer to NFPA 1901 or NFPA 1911)

1.

Close all valves and drains. Cap all suction openings and
the outlet of the suction side relief valve (if so equipped).

2.

Connect a test vacuum gauge or manometer to the
intake test gauge connection on the pump panel.

3.

Engage the priming pump until the gauge indicates 22”
Hg.

4.

Compare the readings of the test gauge and the appara-
tus gauge. Note any difference.

5.

STOP the priming pump and observe the gauge. If the
vacuum falls more then 10” Hg. in five (5) minutes it is an indication of at least
one air leak.

6.

Vacuum leaks may often be detected by ear if the engine is turned OFF. Correct
leaks immediately before returning the pump to service.

7.

Test the suction hose as follows:

Attach the suction hose to the pump.

Place the suction tube cap on the end of the hose in place of a strainer.

Close all valves and drains. Cap all suction openings and the outlet of the
suction side relief valve (if so equipped).

Connect a test vacuum gauge or manometer to the intake test gauge connec-
tion on the pump panel.

Engage the priming pump until the gauge indicates at least 22” Hg.

If the vacuum falls more then 10” in 5 minutes, at least one air leak exists.

Verify the test gauge and the apparatus gauge display the same readings.
Repair or replace and gauges that do not display the correct pressure.

Figure 5-1: Priming

Valve Handle

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