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Gems RotorFlow RFS-2500 Series Instruction Bulletin page 2

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Installation:
RotorFlow sensors connect to piping via NPT mating threads forms. The following guidelines are
provided to assist with installation for a leak-free seal, without damage to the unit: 1) Apply pipe thread sealant to male
pipe threads. 2) Thread RotorFlow unit onto male pipe thread until hang-tight . 3) Tighten pipe 1 to 1/2 additional turns.
4) If improper seal results, continue turning pipe into unit in 1/4 turn increments. Do not exceed one additional turn.
Recommended pipe Sealants:
® "
(a) Permatex
No More Leaks" (b) Teflon
Filtration and Cleaning:
RotorFlow sensor, accumulation is easily cleared by removing the lens from the body. The lens is removed by turning
its center rib 45°C counter-clockwise and then pulling it out. To reinstall the lens, simply reverse the process.
Pressure must be relieved from the system prior to sensor clean-out.
Panel Mounting
Any RotorFlow sensor may be panel mounted using holes integrated into the bodies.
Plastic Bodies
Two (2) mounting ears are provided at the body centerline to receive #8 Self- tapping screws.
ies use 8-32 UNC2B screws.).
See recommended panel preparation diagram. Note: ANSI T Type 23 self-tapping screws are recommended for plastic.
They may be replaced with standard machine screws if reinstallation should be required.
Plastic, Brass , Stainless Steel
1/4", 1/2", 9/16"-18
®
Thread Tape.
150 micron filtration is recommended. However, should foreign particles enter the
A RotorFlow Repair Kit is available, including the following replacement
parts: lens, O-ring, shaft, and rotor. Consult Factory to order.
Brass/Stainless Steel
3/4" & 1"
Note
( Brass and stainless steel bod-

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