41
4.4.4.1.3 Performance Testing Test Procedure
The NFPA standards require a 10% reserve in pressure at the capacity being run when the appa-
ratus is delivered.
A. Check engine speed (No load maximum). Use RPM counter. If more than
50 RPM off from original recorded RPM correct problem/RPM before testing.)
NOTE
The loss is specified to account for packing seals (the Hale Flex Series pumps use
mechanical seals) therefore the loss should NOT occur.
B. Check dry vacuum. (Check with two 10 ft lengths of correct sized suction
hose attached and using suction tube cap[s].) Use vacuum gauge. If 22(± 2)
inHG is NOT obtained (or maintained with less than 10 inHG loss in five
minutes) correct all leaks before testing.
C. Warm up apparatus prior to start of test. Run pump for 10-15 minutes at
70-80 psi before beginning performance test. (Turned on engine driven loads
including 50% loading of PTO generators.)
D. Run standard pump test in accordance with NFPA standards to check pump
performance.
NOTES
Utilize Table 3 for draft limiting factors (Lift Loss), Table 4 to determine hose sizes for
pump rating capacity, Table 5 for lift loss from barometric pressure, Table 6 for lift
loss from elevation, and Table 10 pressure and flow for various size nozzles.
Select a properly sized nozzle. Choose a nozzle, which allows a minimum flow of the
gpm being tested while maintaining a pitot reading close to 60–70 psi.
Pumps rated below 750 gpm are NOT overload tested per NFPA.
Run pump for 20 minutes at capacity. 1.
Run pump for 10 minutes at 70% capacity. 2.
Run pump for 10 minutes at 50% capacity. 3.
NOTE
If the apparatus does not reach performance levels, refer to Section 4.4.4.
E. Compare results of this test to test results for apparatus when it was deliv-
ered.
NOTE
It may be that the apparatus did not show the 10% reserve at delivery.
If the apparatus performance has dropped appreciably compared to its original per-
formance, it needs to be serviced. (Apparatus test results should be on file with the
delivery documents. If not, they may be obtained from the apparatus manufacturer or
from the original certifying authority.)
4.4.5 Annual Pump Maintenance
Perform the following as a minimum to maintain pump dependability and optimum performance.
• Perform the yearly pump test to check performance levels. (See NFPA Standard 1911 for
more details.)
To Next Page
Loading...
