Fluid Components International FLT93 Nuclear - Manual (Page 3)

FLT ® Series FlexSwitch TM 06EN003409 Rev. -
Fluid Components International LLC 3
Table of Contents
1 GENERAL ...................................................................................................................................................................................................7
Description................................................................................................................................................................................................................... 7
Theory of Operation ..................................................................................................................................................................................................... 7
Sensing Element .......................................................................................................................................................................................................... 7
Control Circuit .............................................................................................................................................................................................................. 7
Technical Specifi cation ................................................................................................................................................................................................ 8
2 INSTALLATION .........................................................................................................................................................................................11
Receiving/Inspection ................................................................................................................................................................................................... 11
Packing/Shipping/Returns ........................................................................................................................................................................................... 11
Factory Calibration Note.............................................................................................................................................................................................. 11
Pre-Installation Procedure ........................................................................................................................................................................................... 11
Use Standard ESD Precautions ................................................................................................................................................................................ 11
Prepare or Verify Sensing Element Location ............................................................................................................................................................ 11
Verify Dimensions .................................................................................................................................................................................................... 11
Verify Sensing Element Flow Direction and Placement Orientation (Flow Application) ......................................................................................... 11
Verify Sensing Element Flow Direction and Placement Orientation (Level Application) ........................................................................................ 12
Install the Sensing Element......................................................................................................................................................................................... 12
Male NPT Mounting ................................................................................................................................................................................................. 12
Flange Mounting ...................................................................................................................................................................................................... 12
Packing Gland Assembly .......................................................................................................................................................................................... 13
In-line NPT Assembly (FLT 93 -L) ............................................................................................................................................................................... 13
Install and Wire the Enclosure(s) ............................................................................................................................................................................. 14
Minimum Wire Size.................................................................................................................................................................................................. 14
Enclosures Covers .................................................................................................................................................................................................... 14
Cable and Conduit Entry Devices ............................................................................................................................................................................. 14
Wiring the Local Enclosure ..................................................................................................................................................................................... 15
Wiring The Remote Enclosure.................................................................................................................................................................................. 15
Locate the Remote Hardware Location.................................................................................................................................................................... 15
Wiring Remote Enclosure with Auxiliary Relay ....................................................................................................................................................... 16
Wiring A Remote Control Circuit To An Auxiliary Relay Board ................................................................................................................................ 16
Wiring Output Signal Terminals .................................................................................................................................................................................. 17
3 OPERATION ...............................................................................................................................................................................................19
Factory Default Jumper Confi guration ........................................................................................................................................................................ 19
Confi guration Jumpers ................................................................................................................................................................................................ 19
Heater Cut-Off ............................................................................................................................................................................................................. 19
Alarm Set Point Adjustments ...................................................................................................................................................................................... 20
Numerical Adjustment Versus Adjustment by Observation .................................................................................................................................... 20
Numerical Alarm Set Point Adjustment ...................................................................................................................................................................... 22
Air/Gas Flow Applications ....................................................................................................................................................................................... 22
Wet/Dry Liquid Level Applications .......................................................................................................................................................................... 24
Liquid Flow Applications .......................................................................................................................................................................................... 26
Adjustment by Observation ......................................................................................................................................................................................... 28
Flow Applications ..................................................................................................................................................................................................... 28