INDCO, Inc.
M-M-30118 mixer manual HS-5
date: 3/8/05
CAUTION:
• Never run mixer without an impeller.
• Never run the impeller in open air.
• Never run impeller outside a container.
Dispersion “rules of thumb” include:
10-HP is required for every 100-gallons, under 20,000-cPs.
Single shaft dispersers are not recommended for product
over 50,000-cPs. The liquid level should equal the liquid
diameter. In general the disperser is run at blade tip speeds
of 4,000 to 6,000 Feet-Per-Minute. FPM = rpm x 0.262 x
blade diameter, in inches. The lower ranges are used for
agitation or blending operations while the upper ranges are
used for dispersions of difficult materials. The middle range
is adaptable to a great many solutions and easier
dispersions. Experience by the operator will be the best
key as to what speed to try first on materials handled at
your facility.
The blade should equal 1/3rd the tank diameter and be
center, vertical mounted. Under normal operation the blade
is located from 1 to 1.5 blade diameters from the bottom.
If this results in an excessive vortex, the blade may be
lowered. If the action is a little slow at the above location,
the blade may be raised to a limit of 2.5 diameters to obtain
a good flow providing the amount of material over the blade
is greater than the amount of material beneath. At this
point, good action is usually assured in the bottom of the
container.
When adding materials to the container for a test, always
introduce the liquid phase first. In most cases, the disperser
should be started and solid phase added. However, on
some formulations such as enamel, particularly those of
colored pigments, it has been found most satisfactory to
add vehicle in tank and then add all pigments before turning
on motor.
Air Cylinder Operation:
Before connecting your air supply ensure the lift control
valve is in the center (off) position. The valve lever is spring
loaded to rest in the center position. Connect your air supply
to the quick connector on the 3-position control valve.
Maximum air pressure is 100 PSI. Note that air pressure is
used to both raise and lower the cylinder. The following will
enable you to adjust the height of the impeller or to install
and remove your batch container:
CAUTION:
After the air line is installed and before operating
the machine for the first time, move the lift control valve to
the downward position. This will charge the air cylinder
and prevent surging when the lift control valve is moved to
the upward position.
• Lifting:
Move the lift control valve to the up most position. To
stop upward motion move valve to center (off) position.
• Hold:
To hold the impeller at any height move the lift control
valve to the center (off) position.
• Lowering:
Move the lift control valve to the down most position.
To stop downward motion move valve to center (off)
position.
Electronic Speed Control:
Baldor SmartMotor® Inverter-Duty models have an
electronic keypad variable speed control. Speed range is
180 to 3600 RPM.
Mechanical Speed Control:
Units with the mechanical variable speed belt drive have a
speed range of 600 to 4000 RPM.
Turning the hand-wheel at the rear of the disperser varies
the speed. For best results always stop and start the
disperser in the lowest variable speed hand-wheel setting.
NOTE:
DO NOT TURN THE HAND-WHEEL KNOB WHEN THE
DISPERSER IS NOT RUNNING !
Operation
page 4 of 11
mechanical
speed
control
hand-wheel
lift cylinder
control valve
blade bolt
container
holder
Operation, continued
