Hypertherm HT2000 Water Muffler - Manual (Page 8)

SAFETY, INTRODUCTION & SPECIFICATIONS
Page 1-3
HT2000/MAX200 Water Muffler Instruction Manual
INTRODUCTION
The HT2000/MAX200 Water Muffler is a plasma cutting torch option which greatly
improves the plasma cutting system's safety and pollution control capabilities. The
Water Muffler system can be used to cut both above and below water.
Above-Water Cutting
When used above water (material at the water line), the system becomes an effective
pollution control attachment which substantially reduces noise levels, ultraviolet
radiation, glare, and airborne particulates. Noise levels less than 95 dBA can be
expected when cutting with oxygen to a maximum current of 200A.
Underwater Cutting
Underwater operation provides the maximum possible noise suppression over the
widest possible range of current levels. Less than 70 dBA can be expected when
cutting three inches or more below the surface of the water.
System Components
Refer to the Installation section, Upon Receipt , for a list of the HT2000/MAX200
Water Muffler System components.
Water Table Requirements
The Water Muffler must be used in conjunction with the Water Table Pollution Control
System. When cutting above water, the water level in the Water Table should be up
to or slightly above the bottom surface of the workpiece. The water reservoir located
beneath the plate prevents the high-intensity sound waves from escaping out the
underside of the workpiece.
When the Water Muffler is used below water, the water level in the Water Table must
be three inches or more above the top surface of the workpiece.
The Water Muffler System significantly cools the smoke and fumes generated by
plasma cutting (especially when cutting underwater). Proper ventilation and fume
extraction near the surface of the Water Table is required.