APG FLE Series user manual - Manual (Page 9)

Rev. A3, 10/08 FLE Series
9
Automation Products Group, Inc.
APG...Providing tailored solutions for measurement applications
Tel: 1/888/525-7300 • Fax: 1/435/753-7490 • www.apgsensors.com • [email protected]
• Inspection and Maintenance
Periodic inspection is necessary to keep your FLE unit in good working
order.
CAUTION! Do not remove the housing cover until the power
supplied to the unit is turned off.
Keep the sensor clean.
Never leave the housing cover off (for units equipted with a housing).
If the cover becomes damaged or is misplaced, order a replacement
immediately.
If sediment or other foreign matter is trapped between the stem
and the float, detection errors may be caused. Keep the float and
stem clean.
• Technical Notes
1. The float travel stop settings are based on how the magnetic field
influences the reed switch. Normally it is not necessary to move the
stop. If the stops are moved, check the switch action for float overrun.
2. Normally Open (NO) (switch closes as level rises) and Normally Closed
(NC) (switch closes as level falls).