STS M-750H, Operator'S Manual

Page: 38 / 72

38
M-750H
Operating the M-750 Unit
Typical Cold Weather Shutdown & Storage
Additional Winter and Freezing Weather Shut Down

Pump or drain remaining mixed fluid out of the tank and dispose of it according to local environmental
approved practices.

Make sure “Tank Gun” and “Drill Fluid” valves are open.

Disconnect the 2” discharge hose that went to the drill rig or reservoir tank, at the drill rig or reservoir,
and securely fasten it, back into the mixing tank to recalculate the fluid.

Fill and rinse the tank with clear water and then start the motor and pump. By pumping this water
through the system, it will remove buildup and dilute any remaining mixed fluid in the system.

Open the valve on the wash wand and flush it back into the hopper. Open the hopper valve to drain, then
close.

Move the control lever to the most left position against the stop pin to stop the motor and pump.

STOP the hydraulic power source (customer supplied).

Drain the remaining water out of the tank (use the customer installed tank bottom drain valve) and dispose
of it according to local environmental approved practices.

Remove the drain cap on the suction tee located at the lower right end of tank and allow remaining water
to escape from the piping. Leave the cap off.

Remove centrifugal pump front drain plug. Leave the pump plug out.

Make sure “Tank Gun” and “Drill Fluid” and wash wand valves are open.

Remove filter / shear and clean as described in the maintenance section of this manual. Leave filter /
shear out of housing as this will allow remaining moisture to drain.

Open the hopper valve and pour in a suitable environmentally friendly anti-freeze until it runs out of the
filter / shear housing opened end.

Shut the hopper valve and pour a suitable environmentally friendly anti-freeze into the hopper until
about 2” of fluid cover the valve. This will stop the valve from freezing around the edges.
CAUTION
NEVER LEAVE LIQUID IN THE
PUMP CASING, PIPING, OR HOSES
during freezing weather conditions,
as damage will result.
Follow instruction for winterizing.
CAUTION
TO ENTER THE TANK is not recommended
Personal injury could result from
the presents of hazardous fumes,
remaining fluid or unit start-up.
CAUTION
CARE MUST BE TAKEN WHEN
INSTALLING THE COUPLER GASKETS.
If the gaskets are not properly lubricated
and installed, a leak may develop.
WARNING
REFER TO THE SA FETY
STATE MENTS IN THE
OEM SUPPLI ED MAN UALS
A ND
THIS MANUAL
REGA RDING THESE
OPE RATIONS.