83
Operation
SP 500 / 750-15 / 750-18 / 1000 / 1250 Operation Manual
Clean the waterbox
To clean the waterbox,(Figure 27) start by lowering the
engine RPM to an idle. Leave the waterbox cover in
place for now. Open the drain and allow the existing
water to ow out the bottom. When water stops owing,
give the unit a stroke or two in either forward or reverse.
This will force the water in the extended cylinder back
into the waterbox and out the drain. The waterbox is
empty when no more water ows out the drain, even
after the unit is cycled.
Crushing/amputation hazard. Dis-
able the hydraulic system before re-
moving waterbox guards.
Stop the pump and secure it against
unintentional starting by pushing the
emergency stop button.
Remove the waterbox covers and spray the waterbox
and cylinders through the safety grate, until all cement
nes and grout are ushed.
Figure 27
If you will not be lling the waterbox again until just be-
fore the next pour, follow this procedure:
• Replace the waterbox cover.
• Put the pump into forward or reverse for one or
two strokes to force the clean water out the drain.
• Close the drain.
If you will be relling the waterbox immediately, simply
close the drain and nish lling the waterbox. Remem-
ber to replace the waterbox cover before restarting the
unit.
If the concrete pump will be transported or stored in be-
low freezing temperatures, you must drain all the water
from the waterbox. (See “” on page 85.)
Preparing for travel
Securely store your cleanout rake, sponge ball, grease
gun, hammer, shovel, and accessories for travel.
• If you collected concrete delivery tickets on your
job, hand them to the concrete supervisor when
you turn in your job ticket for signing.
• Before you leave, walk around the tow vehicle
and stationary pump. Look for items you may be
forgetting, look under the unit for personnel and
obstructions. Check tires for pressure and wear.
Many driving accidents happen on the way back
to the shop after a job, or on the way to a second
job. The walk around check before going on the
road may prevent these accidents. Think about
your route, bearing in mind the time of day, road
construction, and other conditions.
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