BGM-SERIES OPERATION & MAINTENANCE MANUAL
3389 ~ 128
th
Avenue Holland, MI 49424 Phone: 616/399-5600 Fax 616/399-3084
Copyright 2015 BRAWN Mixer, Inc. www.BRAWNMIXER.com Page 3 of 9
8/6/2015
INSTALLATION, CONT.
The following guidelines are based on mixing in vertical
cylindrical tanks with flat, dished, or shallow cone
bottoms. Mixer installations may vary with tank shape,
retention times, starting conditions and other
requirements.
1. For liquid levels 0.5 to 1.1 times the tank diameter, a
single impeller is suitable.
2. For liquid levels 1.1 to 1.6 times the tank diameter,
use dual impellers.
3. Impellers may be located from 0.5 to 2.0 impeller
diameters off the tank bottom, with one diameter off
bottom being optimum.
4. When dual impellers are necessary, spacing
between impellers should be approximately two
impeller diameters with gear drives, and four to five
impeller diameters with direct drive mixers.
5. Mixer position in tank should be as shown in
FIGURE A or B [below] for maximum turnover of
liquid.
FIGURE A
START UP
1. All units are lubricated before shipment. The
lubricant level should be checked with the unit
positioned vertically. Lubricant should only be
added if the level is below the top of the gear. Do
not fill beyond the top of the gear.
2. Connect the motor in accordance with the motor
nameplate. The motor starter should incorporate
overload protection. Before operating the mixer, jog
the motor and observe mixer shaft rotation. Proper
rotation is clockwise, as viewed from the top, unless
otherwise noted.
3. Check all bolts and fasteners for tightness. It is
good maintenance practice to recheck all bolts after
two weeks of operation and periodically thereafter.
Refer to TABLE 1 for recommended torque values.
4. Do not attempt to start mixer with impellers buried
in solids or solidified liquids
FIGURE B
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