❑
Preventive Maintenance
58
Silencer Series Booster Pump
p/n: 029-0020-83-0
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 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 indi-
cates at least 22” Hg vacuum. (See Figure 4-2:
“PVG Priming Valve Handle.”)
4.
Compare the readings of the test gauge and the
apparatus gauge. Note any difference.
5.
STOP the priming pump and observe the gauge.
If the vacuum falls more than 10” Hg. in 5 minutes, it is an indication of at
least one air leak.
Vacuum leaks can often be detected by ear if the apparatus engine is
turned OFF. Correct leaks immediately before returning the pump to ser-
vice.
6.
Test the suction hose as follows:
❑
Attach the suction hose to the pump.
❑
Place a 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 calibrated vacuum gauge or manometer to the intake test
gauge connection on the pump panel.
❑
Engage the priming pump until the gauge indicates at least 22” Hg vac-
uum.
❑
Watch the gauge. If the vacuum falls more than 10”Hg. in 5 minutes, it
indicates at least one air leak.
❑
Verify the test gauge and the apparatus gauge display the same readings.
Repair or replace any gauges that do not display the correct pressure.
Figure 4-2: PVG Priming
Valve Handle
Summary of Contents for Silencer AP Series
Page 6: ...Overview 6 Silencer Series Booster Pump p n 029 0020 83 0...
Page 22: ...Introduction 22 Section 2 Introduction Hale Products Inc May 2006 Rev B...
Page 32: ...Accessories Options 32 Section 2a Accessories Hale Products Inc May 2006 Rev B...
Page 66: ...Preventive Maintenance 66 Silencer Series Booster Pump p n 029 0020 83 0...
Page 124: ...Installation 124 Basic Installation Hale Products Inc August 06 Rev B...
Page 143: ...143 Appendix F Cavitation Hale Products Inc Nov 2005 Rev A Cavitation...
Page 144: ...Cavitation 144 Appendix F Cavitation Hale Products Inc Nov 2005 Rev A...