Dwyer Instruments 530 Manuale utente

The Dwyer Model 530 Air Flow Switch provides excel-

lent sensitivity and reliability at a very reasonable price.

Quality features include rugged die cast zinc body,

stainless steel vane, silicone rubber gasket and SPDT

snap switch. Unit is easily field adjustable from 400-

1600 FPM. Mounting is fast and simple, requiring only

two screws. Vane fits 6 in. or larger ducts. UL approved.

To order, specify Dwyer Model 530 Air Flow Switch.

CAUTION: For use only with air or non-combustible,

non-corrosive gases. Unit is not sealed against dust.

Model 530 Air Flow Switch

Specifications - Installation and Operating Instructions

Bulletin E-65

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: Air and non-combustible gas flow.

Wetted Materials: Contact factory.

Vane: Stainless Steel.

Temperature Limit: 180°F (82°C).

Switch Type: SPDT.

Electrical Rating: 125 VAC - 9.8 amp full load 58.8

amp locked rotor. 250 VAC - 4.9 amp full load 29.4 amp

locked rotor. Pilot Rating: 470 VA at 125, 250 VAC.

Resistive: 15 amp at 125, 250, or 480 VAC.

Electrical Connections: Screw type terminal.

Conduit Connection: 7/8˝ conduit hole.

Mounting Orientation: Horizontal duct flow

Set Point Adjustment: Screw type.

Weight: 1 lb, 1 oz (481.94 g)

Patent No. 4,725,700

E-65 9/15/06 9:52 AM Page 1

Model 530 Air Flow Switch Bulletin E-65

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 - Installation and Operating Instructions

CAUTION: Vane edges are sharp. Use care when

handling.

INSTALLATION

1. Select a location in a horizontal duct at least 10 duct

diameters from fans and 7 diameters from elbows, size

changes, etc. which can cause turbulence. Also, avoid

areas with excess vibration or where the temperature

limits might be exceeded. Switch can be mounted in any

position.

2. Use vane as received for 8″(203 mm) or larger ducts.

Trim at notch for 6″(152 mm) ducts.

3. Cut a mounting hole and slot for the vane and drill two

3.32” (2.38 mm) screw holes as shown in the full size

drawing on the reverse side. Insert switch through slot

and rotate 90° so arrow on switch enclosure points in

direction of air flow. Attach switch to duct with sheet

metal screws provided.

4. To make electrical connections, loosen the retaining screw

and remove the conduit enclosure cover. The SPDT snap

switch has screw terminals marked common, normally open

and normally closed. A ground screw is also provided. On

increasing flow the normally open contacts will close and the

normally closed contacts will open as the set point is passed.

5. To adjust set point, turn the hex screw located near the

ground screw. Rotate clockwise to increase setting or

counter-clockwise to decrease.

6. After all electrical connections and adjustments are com-

plete, replace conduit enclosure cover.

MAINTENANCE

The only adjustment is that of the set point. Care should be

taken to keep switch dry and free of dust, dirt and oil. No

lubrication or routine maintenance is necessary in normal

service.

FLOW SWITCH

ø3-7/16 (87.31)

ø3/32 (2.38)

TYP 2 PLACES

ø1 (25.40)

2-7/16

(61.91)

1/8

(3.18)

TYP

2-7/8

(73.03)

AIR

FLOW

Full Size Mounting Template

E-65 9/15/06 9:52 AM Page 2

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