Parr Instrument Series 4558 - Manual (Page 20)

4555 - 58 Series
5G & 10L Pressure Reactors
- 19 -
ACCESSORIES
Internal Cooling Coils
Cooling coils can be installed in any of these reactors. Reactors purchased without a coil
can have this feature added by ordering the appropriate parts from Parr Instrument
Company.
Cooling coils are made in serpentine configurations. A serpentine coil does not interfere
with the use of a liner. Plugs are available to seal the cooling coil opening when the coil is
not used.
Replacement coils are furnished with excess tubing at the ends to allow for any
adjustments that might be required when installing a new coil. Align the replacement coil
with the internals before retightening the connections. Remove any sharp burrs and attach
the elbow connectors. Use only moderate force when tightening these elbows so that the
ferrules will not be crimped too deeply into the tube. If tightened too hard it will be difficult to
remove the brass ferrules without damaging the tube, making it impossible to reuse the coil
after it has been removed from the vessel head.
Stirrer Drive Systems
Two types of drive systems are available on the 4555 Series Reactors. They are the
direct drive and the gearbox drives. The direct drive has the motor mounted vertically above
the reactor with the drive coupler connected to the motor shaft. This will produce speeds
from 0 to 1700 RPM. The gearbox drive is offered with three different speed ranges. They
are 3:1 ratio, 5:1 ratio, and 10:1 ratio. These are usually used in low RPM, high stirring load
applications.
Quick Disconnect Drive Coupler
The top coupler half is stationary mounted with a set screw to the drive motor shaft. The
bottom coupler half provides vertical movement for quick disconnect of the couplers. The
bottom coupler is held in the up or engaged position by a spring loaded ball that rests in a
detent in the square drive key. The spring loaded ball inside the threaded hole in the bottom
coupler half and is adjustable to obtain the necessary force to hold coupler in drive or
engaged position.
Removable vessel only: If the coupler needs to be adjusted to align the coupler halves
over each, either relocate the drive motor or the overarm plate or, on moveable vessel
designs, loosen the mounting bolts of the 1578HC Top Bearing Housing and move the
A1575HC Series Welded Overarm Assembly as required to align the drive couplers. Tighten
the mounting flange bolts while holding the welded overarm assembly in position.