Parr Instrument Series 5500 - Manual (Page 8)

Compact Mini Bench Top 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 3 sq. ft. of work space
on a sturdy bench or table in a well ventilated area
with convenient access to an electric outlet, running
water, and a drain. If the tabletop is not heat resis-
tant it would be ideal to provide an insulated pad on
which to set the vessel when it is hot.
1. Set the Temperature Controller near the reactor,
leaving a space of at least six inches between
the controller and the base of the reactor so
that the controller will not be unduly affected by
radiant heat. Connect the reactor to the control-
ler using information contained in its Instruction
Manual 548M or follow the steps below.
Labeled connections are provided on the rear panel
of the controller.
Parr Cooling Only:
The Parr Cooling output connector is to be used only
with Parr Instrument Company cooling solenoid valve
assemblies supplied with the appropriate cooling
power cord.
Parr Heating Only:
The Parr Heating output connector is to be used only
with Parr Instrument Company heater assemblies
supplied with the appropriate heater power cord.
Note: Do not make connections to a Variac,
Powerstat or the like to attempt to control the
heating output. The heavy inductive load on
the primary side of such devices can destroy
the internal sold state relay located in the
4848 controller.
The Motor output connector is to be used only with
Parr Instrument Company motor assemblies sup-
plied with the appropriate motor power cord.
2. Connect the heater cord from the heater into
the heater socket on the rear panel of the Series
4848 Reactor Controller.
3. Plug the motor cord into the motor socket on the
rear of the controller.
Secure the clamp on the motor cord with
the provided screw next to the motor
socket for safety purposes.
4. Connect the thermocouple and extension wire
to both the thermocouple and to the controller
in the “Primary Temp Input” position on the rear
panel. Insert the thermocouple in the thermowell.
5. Connect leads from accessory packages such as
tachometer, pressure transducer and high temp
cut-off to the designated positions on the back
panel of the 4848 Controller.
6. Connect cooling water to the magnetic drive.
See Instruction Manual No. 441M.
7. Connect tubing to the rupture disc outlet and run
to a safely vented area. See Instruction Manual
231M.
8. Note the voltage and amperage requirement
stamped on the controller data plate, and then
plug the power cord into an appropriate outlet.
Power for these reactors should be drawn from
a grounded outlet capable of carrying up to the
full current rating of the reactor.
9. If an electric stirrer motor is supplied, turn the
speed control knob fully counterclockwise on
the Reactor Controller, turn on the motor switch
and slightly increase the speed for a short run
to check the stirrer drive system but do not turn
on the heater, put heater toggle switch in center
position (OFF). There must always be a vessel in
the heater when it is turned on, and the vessel
and heater sizes must match. If the heater is op-
erated without proper size vessel in contact with
the mantle, the mantle may overheat and fail.
Motor Coupling Connection/Operation
Connect the motor to the stirrer by lifting the motor/
overrarm approximately 1/2 inch and rotating it into
position above the reactor‘s center. Then slowly move
the motor/overrarm downward until the two halves
of the coupling connect. Up to 45 degrees manual
rotation of the coupling halves relative to each other
may be necessary in order to mesh them properly.