Pierce Pumper, Руководство по эксплуатации и техническому обслуживанию

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OPERATION
3-28 / Pierce Pumper
© 2019 Pierce Manufacturing Inc. All Rights Reserved.
3-11. Changing from Tank to Pressurized Water Supply (Without Gated Intake Valve)
If you change from the water tank to an external water source without an Intake Gate Valve, the water flow to the
discharge attack lines must be stopped.
Pierce recommends that every pumper apparatus have an Intake Gate Valve.
Use these procedures if Gate Valve is absent.
Stopping Water Flow and Connecting the Intake Hose
IMPORTANT: Make sure fire fighters are withdrawn from attack area, because hoses will lose water.
Do not use pump without the inlet screen fitted.
Supply Water to Pump from Hydrant Without Gated Intake Valve
Keep pump water cool. Do not operate the pump for extended periods with the discharge valves closed or the pump may
overheat. The pump is fitted with a thermal relief valve to help prevent overheating.
1. Close discharge valves.
Water pressure during transition period will fluctuate. Protect attack line personnel by closing discharge
valves.
2. Reduce pump speed to IDLE.
Running the pump without water will damage the seals and bearings. Reduce engine speed to IDLE to
minimize wear on the pump while the water supply from the tank is stopped.
3. Close tank-to-pump valve before removing intake cap.
CLOSE Tank-to-Pump Valve before the removing the Intake Cap to prevent tank water from flowing out the
intake.
NOTE: Before connecting intake hose to pump, open hydrant valve and vent for 30 seconds to flush out
gravel and debris.
4. Connect intake hose to pump.
a. Remove the Intake Cap.
b. Connect the Intake Hose.