Parr Instrument 4857 - Manual (Page 4)

4857 Reactor Controllers
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Explanation of Symbols
I On position
O Off position
This CAUTION symbol may be present on the Product Instrumentation
and literature. If present on the product, the user must consult the
appropriate part of the accompanying product literature for more
information.
Protective Earth (PE) terminal. Provided for connection of the
Protective Earth (green or green/yellow) supply system conductor.
Safety Information
To avoid electrical shock, always:
1. Use a properly grounded electrical outlet of
correct voltage and current handling capacity.
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. The power supply
cord of the equipment is the main disconnect
device.
To avoid personal injury:
1. Do not use in the presence of flammable or
combustible materials where fire or explosion
may result. This device contains components
which may ignite such materials.
2. Refer servicing to qualified personnel.
Intended Usage
This controller has been designed for use with
Parr Pressure Vessels, Reactors and Power
Controllers. It has been designed, built, and
tested to strict physical and electrical standards.
However, it is the user's responsibility to install
and operate it in conformance with local
pressure and electrical codes.
If the instrument is used in a manner not
specified by Parr Instrument Company, the
protection provided by the equipment may be
impaired.