Chemineer Greerco - Direction of Rotation; Shaft Sealing Method

COLLOID MILL I. O. & M
5
DIRECTION OF ROTATION
Proper rot ational direction is vital to continued operation of the m achine.
The colloid m ill rotor is threaded ont o its shaft. Im proper direction of
rotation will result in catastrophic es calating damage to the m ixing head
components and possibly the entire mill depending on the duration of
improper operation.
O
PERATING DIRECTION IS COUNTERCLOCKWISE WHEN FACING THE INLET
PORT OF THE MILL
(MOTOR IS AWAY FROM YOU).
The proper shaft rotation required by your colloid mill is indicated by the red
arrow affixed to the mill head support just forward of the motor coupling.
S
HAFT SEALING
A Gr eerco
®
Colloid Mill is available with a num ber o f shaft seal
configuration options. Consult the asse mbly drawing at the back of this
manual for confirmation of the scope of your machine.
Double Lip Seal – All Greerco
®
Colloid Mills are stocked at the factory in a
double lip seal configuration. The lip seals used are m ultiple layer radial
shaft seals consisting of a Teflon
®
anti-friction element an d a
fluoroelastomer sealing element bonded to a metal shell.
Single Mechanical Seal – A standard factory option, your c olloid mill may
have been purchased with a John Crane Type 21 single mechanical seal .
Factory st andard faces are Carbon vs. Silicon Carbide. Alternate faces are
available however they must be requested at the time of quote.
Reconfiguration of a colloid mill with lip seals to allow for the use of
a mechanical seal (or vice versa) is an easy field retrofit. This requires
the purchase of the new style seal(s ) and a new seal plate. Consult
your l ocal Chem ineer representativ e for a quote on the appropriate
parts and field retrofit procedure.