Parr Instrument Series 4520 - Manual (Page 3)

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4520 Bench Top Reactors Parr Instrument Company
PREFACE
Scope
These instructions describe the
installation, operation and maintenance of
Parr Series 4520 Bench Top Reactors
offered in one and two liter sizes. They
cover the basic steps to be followed for
installing these reactors and describe the
function of all standard components. They
are intended to be used in conjunction with
several related instruction sheets listed on
the previous page. This information
describes several components which are
common to most Parr pressure reaction
equipment and includes safety precautions
and other related information applicable to all
reaction laboratories. The users should
study all of these instructions carefully before
starting to use these vessels so that they will
fully understand the capabilities and
limitations of the equipment.
Safety Information
To avoid electrical shock, always:
1. Use a properly grounded electrical outlet
of correct voltage and current handling
capability.
2. Ensure that the equipment is connected
to electrical service according to local
national electrical codes. Failure to
properly connect may create a fire or
shock hazard.
3. For continued protection against possible
hazard, replace fuses with same type and
rating of fuse.
4. Disconnect from the power supply before
maintenance or servicing.
To avoid personal injury:
1. Do not use in the presence of flammable
or combustible materials; fire or explosion
may result. This device contains
components which may ignite such
material.
2. Refer servicing to qualified personnel.
General Specifications
Electrical Ratings
Controller ratings are found in the
Operating Instructions for the controller
supplied with your reactor and on the
controller data plate.
Before connecting a controller to an
electrical outlet, the user must be certain that
the electrical outlet has an earth ground
connection and that the line, load and other
characteristics of the installation do not
exceed the following limits:
Voltage: Fluctuations in the line voltage
should not exceed 10% of the rated nominal
voltage shown on the data plate.
Frequency: Controllers can be operated
from either a 50 or 60 Hertz power supply
without affecting their operation or
calibration.
Current: The total current drawn should not
exceed the rating shown on the data plate on
the controller by more than 10 percent.
Thermocouple: Unless otherwise specified,
all Series 4848 Controllers operate with a
Type J (iron-constantan) thermocouple. The
total resistance of the thermocouple and the
lead wires should not exceed 20 ohms. If
the resistance of the thermocouple circuit is
higher, it will reduce the sensitivity of the
control system.