Lesson 1/Learning Event 4
LEARNING EVENT 4:
DESCRIBE THE PROCEDURES FOR
PUTTING THE 50-GPM PUMP INTO
OPERATION UNDER UNUSUAL CONDITIONS
The procedures for operation of the 50-GPM Pump in unusual conditions are basically the same
as for operation in normal conditions. Additional care is required to protect the pump and engine
from damage and to keep them operating efficiently. In subsequent paragraphs, the measures for
operating the pump in environments of extreme heat, extreme cold, dust and sand, rain and
humidity, or a salt water area will be discussed.
Operation in Sandy or Dust Areas. When the pump is operated in sandy or dusty areas, use
special care to avoid damage to the pump or engine. Shield the unit from dust. Take advantage
of natural barriers which offer protection from blowing sand and/or dust: erect a suitable shield if
necessary. Strain all fuel prior to adding it to the fuel tank. Use precautions to prevent sand or
dust from entering the fuel tank during the filling operation. Service the fuel filter and the air
cleaner frequently in accordance with LO 5-2805-256-12, shown on page 63. Lubricate the
engine frequently. Keep the fuel, lubrication, and ignition system of the engine free of dust and
sand to prevent damage.
Provide proper insulation and special protective covers during sand and dust storms. Keep the
engine clear of heavy drifts of sand or dust. In the event of severe dust or sand storms, provide a
well-protected sheltering device for the engine. Place the engine in a building if one is available.
Remove all sand or dust after any storm and inspect the engine for any damage.
Operation Under Rainy or Humid Conditions. To protect the 50-GPM Pump from rain. cover
the unit with a waterproof cover when it is outside and not in operation. During operation, take
advantage of natural barriers which offer protection from storms, or erect a suitable shelter to
protect the pump. Keep the fuel tank full to prevent moisture condensation. Service the fuel
filter frequently. Lubricate the engine in accordance with the current LO 5-2805-256-12
(Appendix A on page 63). Keep electrical cables, wires, and parts clean and free of moisture.
Operation in Extreme Heat. When the 50-GPM Pump is operated in extreme heat protect the
unit from the direct rays of the sun. Maintain adequate space around the unit to provide for
proper ventilation. If operating in an enclosure, provide a fan to circulate air when possible.
Keep the unit clean to provide proper heat transfer to the air. Lubricate the gasoline engine in
accordance with the current LO 5-2805-256-12 (Appendix A).