ADJUSTABLE DEADBAND PRESSURE SWITCHfirebusters.com/downloads/potterADPS.pdf · PRINTED IN USA MFG. #5401060 - REV H PAGE 2 OF 4 5/02 ADPS ADJUSTABLE DEADBAND PRESSURE SWITCH MOUNTING

Listing/Approvals: UL Standard 508 Guide(NKPZ) and CSA Standard C22.2 No. 14-M Class (321106) for Pressure OperatedIndustrial Control Equipment.UL Standard 873 Guide (XAPX) and CSAStandard C22.2 No. 24 Class (481302) forTemperature Indicating and RegulatingEquipment.CE Marked

Ambient/Media Temperature Range: -4°F to 180°F (-20°C to 82°C)

Construction:• NEMA Type 4X Enclosure for indoor or

outdoor use. (To maintain 4X rating, useappropriate Type 4 conduit hub.)

• Forged Brass or 316 S.S. Pressure Con-nections

• Aluminum Diecast Base with Polymer En-closure

• Beryllium Copper Diaphragm (Stainlesssteel isolator diaphragm included for pro-tection of beryllium copper diaphragm onmodels with stainless steel pressure con-nection.)

• Nitrile Pressure Sealing O-ringSwitch Contact:

Snap-Action SPDT (Form C)15 Amps at 125/250/480 VAC1/8 HP at 125 VAC1/4 HP at 250 VAC

CAUTION: Direct control of motors with HPratings greater than the ratings showncould result in premature failure of theADPS or significantly shortened operat-ing life.

GENERAL DESCRIPTIONThe model ADPS is an Adjustable DeadbandPressure Switch with independent set and re-set points which are adjustable throughout theentire operating range of the switch. The mini-mum deadband (minimum span between setand reset points) may be obtained at any pointin the operating range of the switch. A changein pressure greater than the high setting willreposition the switch mechanism to open orclose a single snap-action electrical switch.This control device is designed for use as anoperating control in applications sensing air,Potter Electric Signal Company • 2081 Craig Road, St. Louis, MO, 63146-4161 • Phone: 800-325-3936/Canada 888-882-1833 • www.pottersignal.com

water, or any fluid not harmful to the pressureconnection, diaphragm or nitrile pressure-seal-ing o-ring. Where an operating control wouldresult in personal injury and/or loss of property,it is the responsibility of the installer to adddevices (safety, limit controls) that protectagainst, or systems (alarm, supervisory sys-tems) that warn of control failure.This device is not intended for applications inexplosive environments or use with hazardousfluids.

PAGE 1 OF 4PRINTED IN USA MFG. #5401060 - REV H5/02

ADPSADJUSTABLE DEADBAND

PRESSURE SWITCH

ELBATSUJDAGNITAREPO

EGNAR

MUMINIMDNABDAED

FOORPERUSSERP

YROTCAFGNITTES

GISP003-52 GISP21 GISP004 GISP06/09

GISP006-05 GISP52 GISP056 GISP002/003

See Model Options on page 4.



PRESSURE SWITCH

MOUNTING AND INSTALLATIONThe Model ADPS is typically mounted in an upright position on a flat surface by two 1/4" screwsthrough the mounting flanges on the base or by two 1/4-20 screws into the back of the base.See Fig. 1 for mounting dimensions. Locate the switch where vibration, shock and ambienttemperature fluctuations are minimal. To avoid damage to the switch, always hold a wrenchon the pressure connection hex when tightening pressure connections. Never tighten thepressure connection by turning the switch housing into the fitting.

FIG. 1

WIRINGUse properly rated temperature supply wire for the anticipated service temperature. Make allelectrical connections in accordance with the National Electrical Code and local regulations.A wiring check may be performed by manually actuating the switch actuator on the side of thesnap-action switch inside the enclosure. (See Fig. 3) NOTE: Do not loosen or remove the two (2)screws that secure the switch to the switch mounting bracket.

4.47

.88

1.66

3.26

5.41

2.25

1.33

DWG. #1080-1

(2) 1 4-20 x .50 DEEPTHREADED HOLES FORBACK MOUNTING OPTION

(1) Ø.875 HOLEFOR 1

2" CONDUITCONNECTION

3.38

(2) Ø.266 MOUNTINGTHRU HOLES

FOR 14" SCREWS

.94

4.65

COM.N.C. N.O. N.O.N.C. COM.DWG. #1060-2

SWITCH ACTION ON

(OPERATING POINT)HIGH PRESSURE

(RESET POINT)LOW PRESSURESWITCH ACTION ON

N.C.

N.O.COM.

N.C.

N.O.COM.

FIG. 2



PRESSURE SWITCH

FIG. 3

ADJUSTMENTSThe two thumb adjustment dials, accessiblethrough the enclosure cover, are used toadjust the set point and reset point of theswitch. The dial scales and pointer may beused to give an indication of the low and highset points.The high setting adjustment dial is calibratedfor increasing pressure. The low setting ad-justment dial is calibrated for decreasing pres-sure. For best accuracy, make the final ad-justments with a pressure gauge at the actualworking media pressure and temperature en-countered in the application.

The minimum deadband (minimum span be-tween set and reset points) may be obtainedat any point in the operating range of theswitch.When the desired settings are obtained, re-place the adjustment cover. The adjustmentcover and enclosure cover can be madetamper resistant by a single sealing wireinserted through the hole in the locking bar.The repeatability of the set and reset points istypically ±1% of the operating range.

GROUND SCREW

SNAP-ACTIONSPDT SWITCH

MANUAL SWITCHACTUATOR FORTESTING

LOW SETTINGADJUSTMENT DIAL

HIGH SETTINGADJUSTMENT DIAL

ALUMINUM DIECAST BASE

14"-18 NPT FEMALE PRESSURE CONNECTION

(OPTIONAL 3 8"-18 NPT FEMALE)

LOCKING BARWITH HOLE FOR

SEALING WIRE

ENCLOSURE COVERADJUSTMENT

COVER

DWG. #1060-3

DO NOT LOOSEN ORREMOVE SCREWS



PRESSURE SWITCH

ORDERING INFORMATION

STOCK NO. MODEL NO.ADJUSTABLEOPERATING

RANGEMINIMUM

DEADBANDPROOF

PRESSUREPRESSURE

CONNECTION DIAPHRAGM

1370010 ADPS-300-1B 25-300 PSIG 12 PSIG 400 PSIG 1/4” NPTBRASS BERYLLIUM COPPER

1370020 ADPS-300-1S 25-300 PSIG 12 PSIG 400 PSIG 1/4” NPT316 S.S.

BERYLLIUM COPPERW/316 S.S. ISOLATOR



1370040 ADPS-600-1B 50-600 PSIG 25 PSIG 650 PSIG 1/4” NPTBRASS BERYLLIUM COPPER





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ADJUSTABLE DEADBAND PRESSURE SWITCHfirebusters.com/downloads/potterADPS.pdf · PRINTED IN USA MFG. #5401060 - REV H PAGE 2 OF 4 5/02 ADPS ADJUSTABLE DEADBAND PRESSURE SWITCH MOUNTING