Schwing 30100750, Руководство по эксплуатации

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Operation
Operation Manual - All S P Rock Valve Model s 96 revD a te
Quick Clean-out
If concrete is setting up in the machine, you will have
to clean out in a hurry. It is important that you
remember the safety rules when cleaning a setting
machine. Accidents happen when you panic. Stay calm
and work as fast as you can without skipping any safety
rules.
You should prioritize the order of clean-out with
regards to the extent of the setting action. Basically,
you should keep in mind the amount of time and
money involved to replace any components that are
ruined by failure to clean before the concrete
completely sets. To help you make this decision, we
have included the following list which is arranged in
order from most expensive and difficult to replace, to
easiest and cheapest to replace. We are not suggesting
that you clean out in the same order, but it may help in
determining where you want to start.
• Rock valve cast housing
• Rock valve
• Material cylinders
• Hopper
• Pipeline
In practice, an experienced operator will dump the
hopper and material cylinders, and rake out the bulk of
the material from the valve in just a couple of minutes,
moving immediately to the pipeline. The rest of the
material in the hopper and valve can be chipped out if it
won’t wash clean. Be sure to disable the hydraulic
system on the unit by stopping the engine, putting the
key in your pocket, and putting a “DO NOT
OPERATE” tag on the ignition switch before entering
the valve/hopper area for chipping.
When cleaning a setting machine, don’t worry about
getting each part perfectly clean before moving on to
the next part. Once you have used water to remove the
bulk of the concrete from a component, it will be
thinned enough to not completely set until you can get
back to it.
Cold weather pumping
It is possible (and routine in some parts of the world) to
pump concrete with outside temperatures as low as
-10° Fahrenheit, and even colder under certain
circumstances. This can present a variety of problems
compared with pumping in moderate temperatures,
such as:
• Water in waterbox freezes while you are
driving to the job.
• Hydraulics are slow and sluggish.
• If it’s very cold, concrete can freeze in the
pipeline while you are pumping.
• Concrete freezes in the hopper.
• The concrete will be loaded with calcium
chloride or an equivalent to allow the concrete
to set before it freezes. This will accelerate
setting, in much the same manner as a hot day
accelerates setting.
• Anything you wash with water becomes coated
with ice, which will not melt and evaporate
until the temperature raises above freezing.
• Machine parts that you touch become very
slippery if they contact any water.
Some of these potential problems can be solved or
tolerated, others cannot. A majority of the time the
concrete will be mixed using very hot water, to keep
the concrete from freezing during the delivery and
waiting period. Some tips for cold weather pumping:
Store the machine indoors in locations that have cold
winters, like the northern U.S. and Canada. If you don’t
have a heated shop for the winter, consider renting one.
Do not put water in the water tank or the waterbox
before driving to the job. If possible, contact the ready
mix company and arrange for the first driver to be
loaded with hot water to fill your waterbox and to mix
your slurry. Arrange for the last driver to be full with
hot water and prepared to let you clean out using this
water.
NOTE!
Yo u r Schwin g u nit w a s d eli v ere d with Mobil
Uni v is N46 hy d r au lic oil. This m u lti
v iscosity oil sho u l d work nicely for a ny
tem p er a t u re between -20˚ F a n d 100˚ F . If
yo u h av e chosen to ch a n g e to a re gu l a r
v iscosity oil, pa y close a ttention to the
followin g pa r ag r ap hs.
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