❑
M a in te n an ce
36
ESP Primer System Instruction Guide
p/n: 029-0810-01-0
Monthly
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 con-
nection on the pump panel.
3.
Engage the priming pump until the gauge indicates
22” Hg. vacuum.
For SPV
, press and hold the prime push button to
energize the priming pump motor;
for PVG
, pull the
primer 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.
6.
If the vacuum falls more then 10” Hg. in five (5) minutes, it is an indication of
at least one air leak.
Vacuum leaks may often be detected by ear if the apparatus 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 con-
nection 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.
❑
Verify the test gauge and the apparatus gauge display the same readings.
Repair and/or replace gauges that do not display the correct pressure.
Figure 5-1: PVG Prim-
ing Valve Handle