Parr Instrument Series 4550 - Manual (Page 8)

4550 Floor Stand Reactors
P a r r I n s t r u m e n t C o m p a n y 8
Assemble the Reactor
These reactors require at least 10 sq. ft. of work-
space in a well-ventilated area with convenient
access to an electric outlet, running water, air and a
drain. This unit needs to be placed at least 10 inches
away from walls or flammable materials.
1. Set the stand in the workspace.
2A. Removable Vessels.
First pivot the overarm assembly to the back of
the support stand.
The pressure vessel has been shipped as a
complete assembly; it may be easiest on the
initial setup to place the entire pressure vessel
assembly into the heater. Note: The complete
assembly does not need to be removed from the
heater during opening and closing operations.
It is designed so that the cylinder can remain
in the heater while the head and split rings are
attached or removed.
Once the vessel assembly is in place rotate the
magnetic stirrer by hand to make sure that it
turns freely. Then move the overarm back into
position above the vessel. The knob on the top
of the overarm will raise the upper shaft with
coupling for attachment to the adapter on the
top of the magnetic stirrer. Push down and
rotate the upper shaft to bring these compo-
nents into alignment.
Occasionally the motor housing and overarm as-
sembly may vibrate out of the standard position.
If the upper shaft is not in alignment with the
center of the top of the magnetic stirrer it will be
necessary to loosen the bolt which attaches the
motor housing to the support stand. Remove
the motor housing panel; there is a single bolt
that runs through the lower housing support
and the top shelf of the floor stand. Once the
bolt is loosened, rotate the housing the required
amount, connect the upper shaft to the magnetic
stirrer and then tighten the motor housing bolt.
2B. Fixed Head Reactor.
Bolt the stand to the floor using the
holes in the base plate.
Loosen the panel screw of the vessel retainer
mounted on the midplate of the support stand
and open the retainer bracket.
The pressure vessel has been shipped as a
complete assembly. It is necessary to loosen the
split ring bolts and remove the split ring. Lift the
head assembly out of the cylinder and slide it
into the midplate of the stand. Close the retainer
bracket. The cylinder should be placed in the
cylinder lift bracket.
Rotate the magnetic stirrer by hand to make sure
that it turns freely.
Connect an air line to the 1/4” quick disconnect
fitting at the base of the support stand. This
pneumatic lift package will raise or lower the
cylinder. It may also be used for the heater. The
lever on the side panel of the support frame
controls the lift motion.
The pneumatic package includes a pressure
regulator with gage located inside of the support
stand housing. It can be accessed by removing
the back panel of the support stand. The regula-
tor has been preset to 50 psi. The regulator can
be adjusted by lifting up on the cap. Rotate
clockwise to increase pressure, counter-clock-
wise to decrease the amount of pressure sent to
the pneumatic lift cylinder. Press the cap back
down after setting the pressure.
The flow control valves have been preset for
optimum performance. Both the speed and
lifting capacity of the pneumatic lift package can
be adjusted with the flow control valves located
on the input and output ports of the pneumatic
cylinder.