Instruction Manual

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The Series CFS2 Cable Float Switch is a mechanically actuated floating switch

intended to activate electrical components, usually pumps, to start and stop

automatically. The CFS2 is perfect for simple level control of liquids for filling or

draining reservoirs and tanks. Float switches such as the CFS2 are the most

universally used for pump automation due to their high reliability, economical

pricing, and easy installation. Counterweights and cable hangers are available to

suit a variety of mounting applications. Optional cables available include those with

UL/CSA approval, higher chemical compatibility, high temperature durability, oil

resistance, and drinking water suitability. Contact factory for piggyback plug option,

gold contact switch option and cable length options ranging from 10 to 70 ft (3.04

to 21.34 m).

Series CFS2 Cable Float Switch

Specifications - Installation and Operating Instructions

Bulletin L-CFS2

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

SPECIFICATIONS

Service: Compatible liquids.

Wetted Materials:

Housing: Polypropylene;

Cable: CFS2-XXPXX-XX: PVC;

CFS2-XXNXX-XX: Neoprene;

CFS2-XXSXX-XX: 3x16 AWG SJOW;

CFS2-XXTXX-XX: Rubber compound EM7 quality ;

CFS2-XXWXX-XX: EPDM ethylene propylene.

Temperature Limits: 32 to 122°F (0 to 50°C).

Pressure Limits: 14.5 psi (1 bar).

Enclosure Rating: IP68.

Switch Type:

CFS2-DXXXX-XX: SPDT;

CFS2-CXXXX-XX: SPST;

CFS2-OXXXX-XX: SPST.

Electrical Rating:

CFS2-XXAXX-XX

10 (4) A @ 250 VAC;

CFS2-XXBXX-XX

10 (8)A @ 250 VAC;

CFS2-XXCXX-XX

10 (8)A @ 250 VAC;

10 (6)A @ 400 VAC;

CFS2-XXDXX-XX

1 HP @ 125 VAC 16 FLA;

2 HP @ 250 VAC 12 FLA;

CFS2-XXEXX-XX

0.05 A @ 250 VAC.

Shipping Weight:

Housing: 5.43 oz (154 g);

Cable: 0.77 oz (21.27 g) per foot.

Agency Approvals: CFS2-XGDSX-XX: UL and CSA approved, all others CE.

5-5/32

[131.00]

1-41/64

[41.50]

6-15/64

[158.50]

4-9/64

[105.00]

3-3/16

[81.00]

L-CFS2:SSS-1000 12/8/10 8:39 AM Page 1

Summary of content (4 pages)

PAGE 1
L-CFS2:SSS-1000 12/8/10 8:39 AM Page 1 Bulletin L-CFS2 Series CFS2 Cable Float Switch Specifications - Installation and Operating Instructions 1-41/64 [41.50] 5-5/32 [131.00] The Series CFS2 Cable Float Switch is a mechanically actuated floating switch intended to activate electrical components, usually pumps, to start and stop automatically. The CFS2 is perfect for simple level control of liquids for filling or draining reservoirs and tanks.
PAGE 2
L-CFS2:SSS-1000 12/8/10 8:39 AM Page 2 INSTALLATION INSTRUCTIONS The basic operating principle of the CFS2 is very simple. As fluid level rises the float will also rise, resulting in a tilt of the micro-switch located inside the housing. This tilt will generate a signal that can be used to actuate a motor or signal an indicator alarm. To ensure the proper function of the CFS2, it is necessary to secure the electric cable inside the tank or well as illustrated in Figures 1 and 2.
PAGE 3
L-CFS2:SSS-1000 12/8/10 8:39 AM Page 3 WIRING DIAGRAMS 2 x 1 CABLE COM COM BROWN L BLUE L Figure 3-Emptying (NO) Function N BROWN N BLUE Figure 4-Filling (NC) Function CFS2-CNXXX-XX CFS2-ONXXX-XX 3 x 1 CABLE COM COM N.C. N.C. N.O. N.O.
PAGE 4
L-CFS2:SSS-1000 12/8/10 8:39 AM Page 4 INSTALLATION OF COUNTERWEIGHT For correct counterweight installation, refer to the following procedure as well as the illustration in Figure 13. 1. Insert the cable into the counterweight, turning it. This will result in the detachment of the plastic ring inserted in the mouth (if necessary use a screwdriver to aid in the detachment of the ring). Place the ring at the point on the cable where the counterweight is to be attached. 2.