Parr Instrument Series 4550 - Manual (Page 9)

4550 Floor Stand Reactors
w w w . p a r r i n s t . c o m 9
3. Set the Reactor Controller near the reactor, leav-
ing 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 controller 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 sole-
noid valve assemblies supplied with the appro-
priate cooling power cord.
Parr Heating Only:
The Parr Heating output connector is to be used
only with Parr Instrument Company heater as-
semblies 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 solid state relay located in the
4848 Controller.
Parr Motor Only:
The Motor output connector is to be used only
with Parr Instrument Company motor assemblies
supplied with the appropriate motor power cord.
4. Connect the heater cord from the heater into
the heater socket on the rear panel of the Series
4848 Reactor Controller.
5. 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.
6. 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.
7. 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.
8. Connect cooling water to the magnetic drive.
See Instruction Manual No. 234M.
9. Connect tubing to the rupture disc outlet and run
to a safely vented area. See Instruction Manual
231M.
10. 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.
11. 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.