F-1031, Section 2112
Page 8 of 15
Pumping from Hydrant or in Relay
!
WARNING
After Pumping
Pressure Hazard. May result in personal injury or
death.
Prior to connection of hoses, caps or other closures
with pump intake or pump discharge connections,
relieve pressure by opening drains or bleeder valves.
!
WARNING
!
WARNING
Pressure Hazard. May result in personal injury or
death.
Prior to removal of hoses, caps or other closures with
pump intake or pump discharge connections, relieve
pressure by opening drains or bleeder valves.
Scalding Water Hazard. May result in serious
burns.
When operating the pump, be sure to open at least
one discharge valve slightly to prevent the pump from
overheating. If the pump runs even for a few minutes
completely closed it may heat the water enough to
scald someone when the valve is opened.
Overheating can damage the packing, seals and
other pump parts. If the apparatus builder has
installed a by-pass system or other provision
designed to prevent over- heating, opening a
discharge valve may be unnecessary.
!
WARNING
Unexpected Truck Movement. May result in
personal injury or death.
Failure to properly shift transmission in accordance
with the transmission operating instructions may result
in unexpected truck movement which may result in
serious personal injury or death.
NOTE: Limit inlet pressure to 150 psi (10.3 bar) if
possible. The pump will operate properly with higher
in- take pressure but will accelerate mechanical seal
wear.
1. Engage pump drive.
2. Open intake, hydrant and other valves as necessary
to allow water to enter the pump.
NOTE: Bleeder valves should be used while filling
a hose connected to an intake with water.
3. Open discharge valves and accelerate engine to
obtain desired discharge pressure and capacity.
4. Set relief valves or other pressure governing device
to desired pressure.
1. Disengage pump drive.
2. If pumping anything but clean water, remove all
intake and discharge caps, open all valves and open
all drains. Flush entire system with clean, fresh water
for several minutes to remove all traces of impurities.
3. If pump is kept full of water when not in use, make
sure water is clean and non-corrosive. Make sure the
pump is completely full or completely drained -
never partially full.
NOTICE
Freezing water hazard. May cause damage to
the pump.
If the pump is exposed to freezing temperatures,
drain all water from pump, lines and accessories.
4. Close all drains and install intake and discharge
caps.
5. If truck is equipped with a priming pump, operate it
until fluid is discharged from priming pump discharge
pipe. Also check fluid level in priming tank, and refill
if necessary.
NOTICE
Do not attempt to pump more water than is avail-
able from the hydrant or relaying pumper. Always
make sure the intake pressure compound gage
reading stays above zero.
NOTE: Some fire departments operate at a
minimum intake pressure of 10 psi (.7 bar)
when pumping from hydrant or in relay to
pre
vent a “soft” intake hose from collapsing.
