Dwyer Series CFS User manual

Brand: Dwyer

Model: Series CFS

Type: User manual

Dwyer Series CFS is a cable float switch designed to control the level of liquids in filling or draining reservoirs and tanks. It features a mercury-free switch housed in a polypropylene cover and includes a counterweight to adjust the stop and start levels of pump up/pump down applications. With an enclosure rating of NEMA 4 (IP68), it is suitable for outdoor use and can withstand harsh environmental conditions. The switch type is SPST with an electrical rating of 10 A @ 250 VAC, resistive, making it compatible with various electrical systems.

Series CFS Cable Float Switch

Bulletin L-CFS

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

Installation and Operating Instructions

SPECIFICATIONS

Service: Compatible liquids.

Wetted Materials: Polypropylene housing, PVC cable.

Temperature Limits: 140°F (60°C).

Pressure Limits: 60 psi (4 bar).

Enclosure Rating: NEMA 4 (IP68).

Switch Type: SPST.

Electrical Rating: 10 A @ 250 VAC, resistive.

Mounting Orientation: Vertical.

Weight: CFS-2: 1.416 (.62 kg).

CFS-10: 3.316 (1.48 kg).

Agency Approvals: CE.

Control the level of liquids in filling or draining reservoirs

and tanks with the Series CFS. The mercury-free switch is

designed with an inverter microswitch housed in a

polypropylene cover. The unit includes a counterweight to

adjust the stop and start levels of pump up/pump down

application.

Ø 1 5/8

[41.40]

Ø 5 5/32

[131.06]

Ø 3 3/16

[81.03]

INSTALLATION INSTRUCTIONS

The installation is very easy by holding the cable with a small

clamp in the reservoir or container. By fixing the

counterweight to the cable, at a closer or farther from

position float, the desired differential between the highest

and lowest level can be freely adjusted. Several differentials

between levels, against counterweight-to-float distance are

given:

Installation of Counterweight:

a. Insert the cable in the counterweight, from the conical

part and rotate it, thus causing the plastic ring inserted in

the opening to become detached (if necessary this

operation can be facilitated with the use of a screwdriver).

The ring should then be positioned in the point where it is

desired to block the counterweight.

b. Force the counterweight on the ring by rotating it, using

a slight pressure.

c. If the counterweight position is to be changed, the

counterweight should be retracted, the ring position

changed and secured once again.

Counterweight-to-float

distance (mm)

Approx. differential

between highest and

lowest level (mm)

100 200 300 400 500

290 390 500 630 730

WIRING DIAGRAM

STOP

(HIGH LEVEL)

START

(HIGH LEVEL)

Black

Neutral

START

(LOW LEVEL)

STOP

(LOW LEVEL)

Blue

Brown

CFS Bulletin 12/4/03 2:33 PM Page 1

Dwyer Series CFS User manual

Dwyer Series CFS User manual

Dwyer Series CFS User manual

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