Operation Overview - 30 FM25/FM25X Operator’s Manual
Transferring Fluid
Transferring Fluid
1. Connect hose from mixing pump to drilling unit.
2. Open hopper and discharge valves.
3. Adjust engine throttle to maintain positive head at pump on drilling unit when it is pumping fluid.
• Half throttle is recommended for most drilling situations.
• A higher throttle setting is required when recirculating fluid to maintain the mix in the tank.
Operating in Cold Weather
For successful operation in cold weather, follow these procedures.
• Use pump to keep drilling fluid circulating at all times, even during transport to and from the jobsite.
• If possible, use all drilling fluid in tank before transporting unit.
• For cold weather storage, drain tank and ensure all fluid system valves are open. Also open drain
valve on pump.
Leaving Jobsite
1. Rinse unit and tools (page 46).
2. Disconnect hoses (page 46).
Buried electric lines. Contact will cause death or serious
injury. Know locations of lines. Stay away.
To help avoid injury: Remember that if electrical strike occurs while fluid hose is connected to drilling
unit, fluid system will also become electrified. See “Emergency Procedures” on page 11.
IMPORTANT: If drilling fluid contains bentonite, leave circulation valve approximately half open
to allow continuous mixing while drilling.
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