Burkert Type 8622 - Manual

Flow/No-Flow Compact
Relay Controller
Type 8622
Owner’s Manual
Ordering Information
SAFETY PRECAUTIONS
Step One
About This Manual:
PLEASE READ THE ENTIRE MANUAL PRIOR TO
INSTALLING OR USING THIS PRODUCT.
This manual includes information on Flow/No-Flow
Compact Relay Controllers from Bürkert 8622
User’s Responsibility for Safety:
Bürkert manufactures several models of controller, with
different mounting and switching configurations. It is the
user’s responsibility to select a controller model that is
appropriate for the application, install it properly, perform
tests of the installed system, and maintain all components.
Electrical Shock Hazard:
When the cap of the controller is removed, it is possible to
contact components that carry high voltage, causing
serious injury or death. All power to the controller and
the relay circuit it controls should be turned OFF
prior to working on the controller. If it is necessary to
make adjustments during powered operation, use
extreme caution and use only insulated tools. Making
adjustments to powered controllers is not
recommended.
Flammable or Explosive Applications:
Compact relay controllers should not be used with
explosive or flammable liquids, which require an
intrinsically safe rating. If you are unsure of the
suitability of a controller for your installation, consult
your Bürkert representative for further information.
Install In a Dry Location:
The 8622 series of controller housing is liquid-resistant
and made of Polypropylene (PP). When installed properly,
the controller is not designed to be immersed. It should
be mounted in such a way that it does not normally come
into contact with fluid. Refer to an industry reference to
ensure that compounds that may splash onto the controller
housing will not damage it. Such damage is not covered
by the warranty.
Relay Contact Rating:
The relay is rated for a 10 amp resistive load. Many loads
(such as a motor during start-up or incandescent lights)
are reactive and have an inrush current characteristic that
may be 10 to 20 times their steady-state load rating. The
use of a contact protection circuit or a stepper relay may
be necessary for your installation if the 10 amp rating
does not provide an ample margin for such inrush currents.
©1998 Bürkert
All rights reserved.
434305X-Ind**/Jan99
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Ordering chart for Flow Switch Controller 8622
Description Type Order Nr.
AC powered Flow switch Controller
3/4" BSP mounting thread 8622-A1M 417965K
3/4" NPT mounting thread 8622-A1N 417966L
DC powered Flow switch Controller
3/4" BSP mounting thread 8622-D1M 417967M
3/4" NPT mounting thread 8622-D1N 417968W
Only connectable to N-Chanel
flow switch versions type 8000
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