Figure 19: Coupling guard installation
WARNING:
Never operate a mixer without a correctly installed coupling guard. Personal injury will occur if
mixer is run without coupling guard.
4.3.1 Check rotor axial clearance
The mixer efficiency is maintained when the proper rotor clearance is set. The rotor has been centered in
the casing at the factory but could change due to piping attachment. Refer to PREVENTIVE MAINTE-
NANCE for rotor adjustment procedure.
4.3.2 Lubricating bearings
Oil Lubrication: Mixers are shipped without oil. Fill the bearing frame with oil, through the filler connection
(located on top of bearing frame), until the level reaches the mark in the middle of the oil level sight-
glass. A high quality turbine type oil with rust and oxidation inhibitors should be used.
If the constant level oiler option is supplied, it would be in the box of fittings which accompanies the mix-
er. The oiler was adjusted before leaving the factory, however, the oil level setting must be checked prior
to operation (Fig. 21). Fill the oiler bottle with oil and replace in the oiler housing. Oil reservoir in bearing
frame is filled when oil remains visible in the bottle. Several fillings of the bottle may be required.
4.3 Couple mixer and driver
3501 Installation, Operation, and Maintenance Instructions
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