© 09/05
3.0 DESCRIPTION
The FC FLOOR CLEANER is a heavy duty flat surface cleaner with four rotating arms. It is designed to
apply high velocity waterjets for cleaning. Rotation of the arms may be powered by jet reaction force or by
an air or hydraulic motor. The water swivel transfers high-pressure water into the manifold. The water
exits through the nozzle arms as high velocity waterjets which are capable of cutting most scale, residues,
membranes, and chemical deposits. Components are also available for vacuuming water and debris from
under the dome.
ROTARY DRIVE OPTION
There are three different options available for rotating the head: jet reaction force, air motor or hydraulic
motor. The Self Rotation section below describes how the head rotates if a motor is not present. The SG-
40 and UH-40 are powered by an air motor belt drive system, and a hydraulic motor is used for the SG-50
or the UH-50.
SELF ROTATION
Angling one or more of the nozzle arms allows the head to self rotate. Refer to Section 3.1-Angle
Setting/Adjustment which shows the angle that two arms should be set at to give a rotation speed of
approximately 1000 rpm for the operating flow and pressure. Increasing or decreasing the angle will give
faster or slower rotation rates. Make sure that the head will rotate clockwise when viewed from the
bottom, so as to tighten the head onto the shaft of the swivel. Tighten both the pressure connection and
the clamp after adjusting the angle. If the dome skirt is too close to the ground, water may accumulate
and result in an irregular rotation speed. The maximum safe rotation speed for the assembly is 1500 rpm.
WATER SUPPLY
A clean and dependable source of water is required. Flow rates in excess of 30 gpm may require
additional weight to hold the unit down. A 10-micron water filter upstream from the pump is
recommended. Flush all hoses before use. Keep the ends covered when not connected.
WATER SWIVEL
The SG CRS-M12Khigh pressure water swivel is rated for 15,000 psi or 20,000 psi maximum operating
pressure and 50 gpm. It has a high pressure seal which should be replaced when the leak becomes too
great for the pump to maintain adequate pressure. The swivel has two grease zerks that should be
serviced every 80 hrs. Keep the inlet nut and all connections tight. Please refer to the appendix for further
detailed information on the swivel.
PRESSURE DUMP
The pressure dump valve is rated at 20,000 psi maximum operating pressure. It is controlled by the
operator through a linkage to the push handle. The exhausted flow is routed under the dome assembly.
Overhaul of this valve consists of replacement of the valve/seat assembly cartridge, as explained in the
appendix.
WHEEL ORIENTATION
There are two possible wheel orientations for FC-SG Floor Cleaner. When the swivel wheels are located
at the front of the assembly, the machine is easier to turn. When the swivel wheels are located at the rear
of the assembly, it is easier to travel in a straight line. See Section 5.1-Wheel Orientation for further
details.
VACUUM OPTION
The vacuum option allows water and debris removal from underneath the dome of the floor cleaner.
