Marshalltown Shockwave SW100H Manual De Operación Y Piezas página 14

OPERATING ON WET CONCRETE
Once the engine is warm
and running by itself with
the choke OPEN you can
begin screeding concrete.
For specific instructions on
Wet Screeding and Form to
Form screeding please see
pages 10 and 11.
1. Begin by placing concrete within your forms slightly higher
than the forms themselves.
2. Place screed on top of concrete and start engine.
3. Increase engine RMP until the clutch engages causing
the screed to vibrate.
4. Walking backwards, begin screeding concrete (see page 10
for Wet Screeding or Page 11 for Form to Form screeding).
5. Your throttle lever does not require constant contact, but
you can adjust RMP and vibration to accommodate wet or
dry concrete. Dry or low slump concrete may require
more vibration to level and screed
6. Continue moving backwards while keeping concrete placed
in front of the blade. The roll back feature of the blade will
keep help keep concrete from sliding over the blade.
Concrete placed too high may slide over the board! This
could make the screed too hard to pull and result in a slab
that is out of level.
!
DO NOT OVER VIBRATE CONCRETE!
The following are signs of too much vibration:
Excessive concrete splatter
Blade sinking below wet pads
Ripple or "wake marks" following the blade
Concrete easily sliding underneath form boards causing dips
along the form edge
Always remember, the less vibration the better. Use only
enough vibration to be able to comfortably pull screed back-
wards, leaving a smooth, level surface.
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WS570
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