Controls - 26 FM25/FM25X Operator’s Manual
Mixing Unit
3. Transfer valve To allow flow from pump to
pump, open valve.
To stop flow from pump to
pump, turn off engine.
4. Discharge valve To allow flow from pump to
drilling unit, open valve.
To stop flow from pump to
drilling unit, close valve.
5. Pump drain valve To drain pump, open valve.
To use pump, close valve.
6. Liquid additive pickup
valve
To allow liquid additives to
flow into mixture, open valve.
To stop flow of liquid
additives, close valve.
IMPORTANT: Do not open valve
unless pump is running and mixing
venturi valve is open. Fluid could flow
out of pickup tube.
7. Hopper valve To allow flow from hopper to
mixing venturi, open valve.
To stop flow from hopper to
mixing venturi, close valve.
IMPORTANT:
• Open valve only when pouring
additives into hopper for mixing.
Close valve when finished.
• Do not open valve unless pump is
running and mixing venturi valve
is open. Fluid could flow back into
hopper.
8. Tank drain plug To drain fluid from tank,
remove plug.
Replace plug before refilling
tank.
Item Description Notes
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