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12838 Stainless Drive, Holland, MI 49424
SHAFT & IMPELLER ASSEMBLY
To install the impeller on the shaft, slide the impeller hub
over the mixer shaft, place the hook key in position,
lower the hub over the hook key and tighten the set
screw. The set screw must seat in the countersunk hole
in the hook key. Proper impeller mounting is illustrated in
FIGURE 1. If an axial flow impeller of bolt together
construction is used, blades should be bolted to the
bottom of the impeller hub ears as shown in FIGURE 2.
FIGURE 1: IMPELLER MOUNT WITH HOOK KEY
FIGURE 2: TYPICAL AXIAL FLOW
IMPELLER ASSEMBLY (A45 SHOWN)
Copyright 2018 BRAWN Mixer
BTR-S
O
ERIES
www.BRAWNMIXER.com
11/27/2018
& M
PERATION
AINTENANCE
Phone: 616/399-5600 Fax 616/399-3084
START UP
1. All units are lubricated before shipment. The
lubricant level should be checked with the unit
mounted in its correct operating position. Lubricant
should be added or removed to bring it to the correct
level. The catalog for the gear unit shows the oil level
for various mounting positions.
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.
Do not operate mixer with the tank empty or the lowest
impeller submerged with less than ½ of the impeller
diameter of liquid above it. Damage to the mixer and/or
mounting structure may result.
M
ANUAL
CAUTION
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