Sor 1710 Compact Level Switch Manuel d'utilisateur Page 8
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Form 916 (03.14) ©SOR Inc.
14685 West 105th Street, Lenexa, KS 66215
913-888-2630
800-676-6794 USA
Fax 913-888-0767
Registered Quality System to ISO 9001
Printed in USA sorinc.com
Maintenance
Troubleshooting
Keep the cover tightly secured to the housing.
Prevent moisture or dirt from entering the housing when the cover is off.
Check all screw terminal connections periodically. Vibration may loosen the screw terminals.
Clean the float and counterweight mechanism periodically to assure continued free movement.
Make no adjustments to the switch mechanism. It is factory calibrated for optimum
performance.
Apply petroleum jelly or anti-seize compounds to cover threads periodically to
prevent seizing.
Inspection and maintenance of this equipment shall be carried out by suitibly-trained
personnel in accordance with the applicable code of practice e.g. EN 60079-17.
Repair of this equipment (as applicable) shall be carried out by suitably-trained
personnel in accordance with the applicable code of practice e.g. EN 60079-19.
Do not remove the cover when the unit is energized.
Symptom Probable Cause
The float is in the actuated
position but the switch
does not actuate.
a. The terminal block is wired incorrectly. Check wiring.
b. The unit is installed upside-down. Rotate housing so
that the nameplate faces up.
c. The switch is damaged. Contact the factory.
The float is in the de-actuated position
but the switch remains actuated.
a. The terminal block is wired incorrectly. Check wiring.
b. The switch is damaged. Contact the factory.
The control will not function when
installed but operates when
removed from process connection.
a. Float travel is inadequate. Check for internal
vessel obstructions. See Mounting Requirements.
Liquid is in the vessel at the actuation
level but the unit does not respond.
a. The float pivot pin is bound up or dirty. Clean the
float pivot pin.
b. The unit is installed upside-down. Rotate housing
so that the nameplate faces up.
c. The specific gravity of the liquid is not sufficient
to lift the float.
d.
The float is leaky or collapsed. Contact the factory.
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