Hydrolevel FS204 - Manual (Page 2)

83 Water Street • New Haven, CT 06511 • Phone (203) 776-0473 • FAX (203) 773-1019 • www.hydrolevel.com
SPECIFICATIONS – FLOW SWITCH MODEL FS204
LIMITED MANUFACTURERʼS WARRANTY
We warrant products manufactured by Hydrolevel Company to be free from defects in
material and workmanship for a period of two years from the date of manufacture or
one year from the date of installation, whichever occurs first. In the event of any claim
under this warranty or otherwise with respect to our products which is made within
such period, we will, at our option, repair or replace such products or refund the pur-
chase price paid to us by you for such products. In no event shall Hydrolevel
Company be liable for any other loss or damage, whether direct, indirect, incidental or
consequential. This warranty is your EXCLUSIVE remedy and shall be IN PLACE OF
any other warranty or guarantee, express or implied, including, without limitation, any
warranty of MERCHANTABILITY or fitness for a particular purpose. This warranty
may not be assigned or transferred and any unauthorized transfer or assignment
thereof shall be void and of no force or effect.
Maximum Service Pressure: 160 psi
Maximum Temperature: 250°F
Enclosure: NEMA type 4 (for wet locations).
Contacts: SPDT switch
7.4 FLA, 44.4 LRA@120VAC Motor Duty
Pilot Duty Rating: 125VA@120/240VAC
Ambient Temperature Range: 32°F-176°F (0°C-80°C)
Media Temperature Range: 32°F-250°F (0°C-121°C)
Pipe Connection: 1"NPT - Brass
Conduit Access: 2 openings for 1/2" conduit
Usage: 1" to 6" pipe sizes (see Flow Chart - Table 1)
INSTALLATION
Step 1 Trimming the Paddles
The stainless steel paddles (set of 4 supplied)
must be trimmed to the appropriate length for the
pipe diameter being used. Use the template at the
right of this page as a cutting guide. Follow the
curve indicated as closely as possible. Standard
shears or tin snips can be used.
Step 4 Wiring
ENERGIZE CIRCUIT UPON NO FLOW
Step 3 Installing in Tee
The Flow Switch must be installed in a 1" NPT
threaded pipe fitting. If a reducing bushing or
welded fitting is required, the length must be kept
to a minimum to insure that the paddle can move
freely in the run of the pipe without coming in con-
tact with the bushing or fitting. Tighten the Flow
Switch with a 1 5 ⁄
8
" box
wrench or adjustable
wrench applied to the
brass nut only. Do not
tighten by grasping the
enclosure. Allow a 1 3 ⁄
4
"
space from the bottom of
the enclosure to the top
of the tee (Figure 3) and
be sure that the arrow
on the side of the enclo-
sure is in the direction of
the flow.
IMPORTANT:
The paddle must not touch the inside wall of the
opposite side of the pipe. If there is any contact,
additional trimming is required.
Step 2 Stacking the
Paddles
After trimming, the paddles must be
stacked as shown in Figure 2 and
then screwed onto the stem of the
flow switch. IMPORTANT: The cor-
rect orientation of the paddles to
the flow of the fluid is essential.
Step 5 Adjusting Sensitivity
To INCREASE
sensitivity (switch
activates at a lower
flow rate), turn the
adjustment screw
counter-clockwise.
To DECREASE
sensitivity (switch
activates at a higher
flow rate), turn the
adjustment screw
clockwise.
FIGURE 2
FIGURE 3
FIGURE 4
Flow Switch will activate load (alarm, light,
relay, motor starter, etc.) when no flow occurs.
ENERGIZE CIRCUIT UPON FLOW
Flow Switch will activate load (alarm, light,
relay, motor starter, etc.) when flow occurs.
COMMON (COM)
FLOW OPENS CIRCUIT (NC)
FLOW CLOSES CIRCUIT (NO)
FS204-0712
Model FS204 Instructions 7/3/12 10:17 AM Page 2