Instruction Manual

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 mixer. The
oiler was adjusted before leaving the factory, however,
the oil level setting must be checked prior to operation
(Fig. 20). 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 (Fig. 20).
Grease Lubrication: Mixers are shipped with grease
installed.
Prolonged Shutdown: If the mixer is put into operation
after prolonged shut-down, flush out the bearings and
bearing frame with a light oil or kerosene to remove
contaminants. During flushing, rotate shaft slowly.
Finally, flush the bearing housing with the proper
lubricating oil to insure oil quality after cleaning.
Regrease bearings prior to starting as described in
"Maintenance of Bearings."
p
! WARNING
Operation of the unit without proper lubrication will
cause bearing failure and mixer seizure.
SHAFT SEALING
Mechanical Seal: Mixers are shipped with mechanical
seals installed. The most common seal with this model is
the cartridge type. Cartridge seals are preset at the factory
and require no field settings, unless seal is removed.
Connection of Sealing Liquid: For satisfactory operation,
there must be a liquid film between seal faces to lubricate
them. Refer to seal manufacturer’s drawing for location of
taps. The primary method used to flush/cool the seal is an
external flush where a clean, cool, compatible liquid is
injected from an outside source directly into seal gland
between the double seal faces. Flushing liquid must be at a
pressure 1.0 kg/cm
2
(15 PSI) above seal chamber pressure.
Injection rate should be 4-8 liters per minute (1-2 gallons
per minute).
STARTING MIXER
1. Make sure inlet valve and any recirculation or
cooling lines are open.
2. Make sure outlet valve is open as dictated by system
conditions.
3. Start Driver.
22
3501 IOM 11/10
Fig. 20