DELTA M Corporation 3242-OM-04 3/27/02
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BEFORE STARTING
DELTA M appreciates your choosing our product for your liquid level or liquid/gas flow switching
application. We are committed to providing reliable, quality instrumentation to our customers.
To ensure the maximum and intended benefit of this instrument, we encourage you to read this brief
operation and maintenance manual in its entirety prior to unpacking and installing the unit.
The following precautions should be noted immediately:
fUSE A 1 1/8 INCH (28.575mm) OPEN-END WRENCH TO TIGHTEN AT THE HEX FLATS OF
THE MNPT OF A STANDARD SWITCH. (IF YOU HAVE A NON-STANDARD SWITCH AN
ALTERNATE SIZE WRENCH MAY BE REQUIRED). DO NOT USE THE INSTRUMENT HEAD
TO TIGHTEN THE SWITCH TO THE MOUNTING PORT. ROTATION OF THE INSTRUMENT
HEAD WITH RESPECT TO THE SENSOR BODY CAN CAUSE INTERNAL WIRING DAMAGE
(SEE FIGURES 1).
fTHE SWITCH BODY MUST BE ORIENTED TO HAVE THE TWIN SENSORS PARALLEL TO
THE LEVEL BEING DETECTED WHEN BEING INSTALLED HORIZONTALLY FOR POINT
LEVEL APPLICATIONS. LIKEWISE, FOR FLOW APPLICATIONS, THE SWITCH BODY
MUST BE ORIENTED TO HAVE THE TWIN SENSORS PERPENDICULAR TO THE FLOW
BEING DETECTED. DUE TO THE PIPE THREAD MOUNTING, IT MAY BE NECESSARY TO
MAKE A TRIAL FIT, ADD OR REMOVE TEFLON TAPE OR OTHER PIPE THREAD
SEALANT, AND REINSTALL TO ACHIEVE A SATISFACTORY SEAL WITH THE SENSORS
PROPERLY ORIENTED. FOR VERTICAL INSTALLATIONS FOR POINT LEVEL
DETECTION THE ORIENTATION MAKES NO DIFFERENCE. PROPER ORIENTATION IS
MARKED ON THE SWITCH BODY FOR REFERENCE (SEE FIGURE 5).
fA GROUND WIRE MUST BE ATTACHED TO THE GROUND SCREW LOCATED INSIDE THE
INSTRUMENT ENCLOSURE FOR PROPER OPERATION. FOR CENELEC/CE OPTION THE
GROUND SCREW IS LOCATED OUTSIDE THE BODY OF THE INSTRUMENT ENCLOSURE
(SEE FIGURE 6).
fBE SURE TO APPLY THE PROPER VOLTAGE AS CONFIGURED AT THE FACTORY. DO
NOT APPLY 115 VAC TO 24 VDC VERSIONS OR 24 VDC TO 115 VAC VERSIONS.
(LIKEWISE 230 VAC).
fFOR OPTIMUM OPERATION, CALIBRATION MUST BE ACCOMPLISHED AT ACTUAL
PROCESS TEMPERATURE AND PRESSURE CONDITIONS IN GASES AND AT ACTUAL
PROCESS TEMPERATURE CONDITIONS IN LIQUIDS.
fDO NOT SANDBLAST OR ABRASIVE CLEAN THE SENSING PROBES. THE SENSING
PROBES COULD BE DAMAGED BY ABRASIVES.
ALL DIMENSIONS GIVEN IN THIS MANUAL ARE IN INCHES (AND MILLIMETERS).
If you have any questions prior to or during installation and calibration, please do not hesitate to call the
factory for assistance. We want to ensure the very best possible installation and operational results for
your benefit.
