Operation Under Usual Conditions (Cont)
2-113. STARTING/STOPPING WATER PUMP ENGINE (CONT).
b. Stopping Water Pump Engine (Disengage Pump).
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.
Make sure to close all discharge valves.
Reduce pump pressure by gradually reducing engine RPM to idle.
Before shutting down water pump engine, run engine at 800
to 1000 RPM with no-load for three to five minutes to allow
turbocharger to slow down and cool off. Turbocharger may
be damaged if not allowed to cool off.
Set pressure governor until tachometer reads 800 to 1,000 RPM
Run engine at 800 to 1000 RPM for three to five minutes.
Set pressure governor to idle (para 2-115).
Idle water pump engine for 30 seconds.