SOR 1550 Top Mounted Level Switch - Manual

Form 865 (11.13) ©SOR Inc. 1/8
Do not exceed catalog stated electrical ratings. Improper current input to
switch will cause permanent damage to contacts.
Electrical Connection
The SOR ® 1550 Electric Level Switch mounts into the top of a vessel.
Electric switching action is provided by the float moving a magnet into the
field of a hermetically sealed reed switch.
NOTE: If you suspect that a product is defective, contact the factory or the
SOR Representative in your area for a return authorization number (RMA).
This product should only be installed by trained and competent personnel.
1550 Top Mounted
Level Switch
General Instructions
Registered Quality System to ISO 9001
Design and
specifications are
subject to change
without notice.
For latest revision, go to
www.sorinc.com
Table of Contents
Electrical Connections ........................ 1
SIL Installation ................................. 2
Wiring ........................................... 2
Float Attachment ............................... 3
Special Conditions ............................. 3
Dimensions ..................................... 4
ATEX and IECEx Marking Details ............ 4
Declaration of Conformity .................... 6
Troubleshooting ................................ 7
Replacement Parts ............................ 7
Before Installing the Level Switch
 Inspect the unit for any shipment damage.
 Check for mechanical clearance of the float. Float must move freely
without binding throughout its stroke.
 Use an acceptable thread compound when installing unit to ensure
a leak-free fit and avoid thread galling.
Electrical connection is free wire leads with a 1/2” NPT(F) conduit
connection. Use two wrenches - one to hold hex conduit connection,
the other to tighten conduit fitting. Switching element is a hermetically
sealed reed switch.
Wiring schematics shown on page 2.
Ensure that all wiring conforms to all applicable local and national electrical
codes and install unit(s) according to relevant national and local safety codes. al
the
.
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ral Instructions
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