901-0000-296
installation instructions
LCP Series
Liquid Level Control Relays
Installation & Setup
Mount the appropriate 8 pin octal socket (Macromatic 70169-D or Custom
Connector OT08-PC) in a suitable enclosure. Wire the socket per the
wiring diagram on the side of the liquid level control relay or as shown
on this sheet under “Operation”.
Make sure to match the terminal
numbers on the socket to the ones shown on the wiring diagram (the
wiring diagram on the relay is the view looking towards the bottom
of the relay vs. the top of the socket).
Use one or two #12-22 solid or
stranded copper or copper-clad aluminum conductors with terminals of the
above sockets--a terminal tightening torque of 12 in-lbs should be used.
Plug the liquid level control relay into the socket, making sure the key on
the center post is in the proper orientation before insertion.
If the relay
must be removed from the socket, do NOT rock the relay back &
forth excessively—the center post could be damaged.
Setting the Sensitivity
All LCP Series products come with an adjustable sensitivity range as
indicated on the nameplate and by the Catalog Number. Adjust the
sensitivity within the range of the product by rotating the knob on top of
the unit. This sets the level at which the relay determines whether liquid is
present at the probe.
Note: the tick marks are for reference only.
Using a Dual Probe Relay in Single Probe Application
A dual probe liquid level control relay can be used in single probe
applications. Connect a jumper wire between the COM & HIGH PROBE
terminals. Connect the single probe to the LOW PROBE terminal & the
COM to the COM terminal. This applies to all three dual probe liquid level
control relay output configurations.
Troubleshooting
If the unit fails to operate properly, check that all connections are correct per the appropriate wiring diagram on the product. If problems continue,
contact Macromatic at 800-238-7474 or e-mail [email protected] for assistance.
Warranty
All Catalog-listed LCP Series Liquid Level Control Relays manufactured by Macromatic are warranted to be free from defects in workmanship
or material under normal service and use for a period of five (5) years from date of manufacture.
Macromatic Industrial Controls, Inc. • 2201 Corporate Drive • Waukesha, WI 53189
For product information and technical support go to www.macromatic.com/contact
December, 2020 - Rev. D
