Quantcast PUMPING FROM HYDRANT OR IN RELAY (POSITIVE WATER SOURCE). (Cont) - TM-9-2320-279-10-30187

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TM 9-2320-279-10-3
Operation Under Usual Conditions (Cont)
WARNING
Discharge caps should not be removed if water system
is under pressure. Discharge caps can act as
projectiles if released under pressure causing injury
or death to personnel.
If any discharge hose is used, make sure hose is
removed from hosebed, nozzle is securely attached,
and nozzle is turned off before opening any discharge
valves. Failure to comply may result in injury to
personnel.
Open and close all valves slowly during any
procedure. Sudden changes in pressure may cause
equipment to react faster than personnel can be
alerted. Make sure surrounding personnel are aware
of changes being made to settings on equipment.
Failure to comply may result in injury or death to
personnel and damage to equipment.
CAUTION
Cavitation can occur when pumping and air enters water.
If engine speed increases without an increase in pressure,
pump may be cavitating. Even though pump may be
primed, air leaks can cause rough operation and an
increase in engine speed without an increase in pressure
or flow. If an air leak is suspected, discontinue pumping
and isolate problem. Cavitation can also occur with large
nozzle tips. Solve this problem by reducing flow. Failure
to comply may result in damage to water pump.
9
8
tfft00603p
7
l. Remove cap (7) from NO.1 DRIVER SIDE DISCHARGE (8).
m. Connect discharge hose (9) to NO. 1 DRIVER SIDE DISCHARGE (8).
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