SQUARE D ACW-26 PRESSURE SWITCH CLASS 9012 FORM

SQUARE D ACW-26 PRESSURE SWITCH CLASS 9012 FORM (NEW WITHOUT BOX)

SQUARE D

CLASS: 9012

TYPE: ACW-26

PRESSURE SWITCH

FORM: M11  SER: A

RANGE: 75-500 PSI

DIFFERENTIAL: 85-160 PSI

POWER SUPPLY: 10A 600VAC

AC PILOT DUTY: 12-120V 3A

                             120-600V  36OVA

DC PILOT DUTY: 115-600 VOLTS 

                             0.1A-1.0A DPST  0.1A-0.2A DPDT

TECHNICAL DATA:

STEAM – SWITCHES SHOULD NOT BE APPLIED DIRECTLY ON STEAM EXCEEDING 15 P.S.I. HOWEVER, WITH THE INSTALLATION OF A STEAM CAPILLARY TUBING KIT, BETWEEN THE PRESSURE SYSTEM AND THE PRESSURE SWITCH, STEAM PRESSURE UP TO 250 PSI MAY BE APPLIED, PROVIDING THIS DOES NOT EXCEED THE MAXIMUM ALLOWABLE PRESSURE RATING OF THE SWITCH, OR THE MAXIMUM TEMPERATURE AT THE BELLOWS. 

ADJUSTMENTS – THE RANGE SETTING IS MADE BY TURNING THE STEM ON TOP OF THE DEVICE WITH A SCREWDRIVER. REMOVAL OF THE FRONT COVER REVEALS THE SCREWDRIVER DIFFERENTIAL ADJUSTMENT IN THE UPPER RIGHT-HAND CORNER OF THE DEVICE. 

SURGE AND PULSATION DAMPENING – ACW SWITCHES ARE FURNISHED WITH .060 PULSATION PLUGS TO PREVENT FALSE OPERATION OF THE SWITCH ON MINOR PRESSURE SURGES. FOR SURGES OF GREATER MAGNITUDE A SURGE REDUCER CAN BE USED. 

ACTUATORS – THE MATERIALS IN CONTACT WITH THE PRESSURE MEDIUM ON STANDARD SWITCHES ARE AS FOLLOWS: HOUSING AND CONNECTOR – CADMIUM OR ZINC PLATED STEEL BELLOWS – PHOSPHOR BRONZE PULSE PLUG – BRASS JOINTS – SOFT SOLDER 

LIFE EXPECTANCY – NORMALLY, THE LIFE OF THE ACW SWITCHING MECHANISM, EXCLUDING THE BELLOWS, IS ABOUT 10 MILLION OPERATIONS. BELLOWS LIFE CAN VARY FROM A FEW THOUSAND TO MILLIONS OF OPERATIONS DEPENDING ON OPERATING PRESSURE, BELLOWS STROKE, FREQUENCY OF OPERATION, PRESENCE OF CORROSIVE ELEMENTS AND PRESSURE SURGES. COMPLETE DATA ON THIS SUBJECT IS AVAILABLE FROM THE FACTORY. HIGH SPEED CYCLING, OR RAPID PRESSURE DROP TO ZERO ON EACH CYCLE CAN DRASTICALLY REDUCE THE LIFE OF A BELLOWS ACTUATED SWITCH. 

SERVICE TEMPERATURE LIMITATIONS: 

AMBIENT                                          PRESSURE MEDIA 

MINIMUM: −56°C (−70°F)         MINIMUM: −73°C (−100°F) 

MAXIMUM: +85°C (+185°F)      MAXIMUM +125°C (+257°F) 

MOUNTING – TYPES ACW AND AEW ARE MOUNTED FROM THE FRONT. THE TWO MOUNTING HOLES ARE EXPOSED BY REMOVAL OF THE COVER PLATE

MADE IN ENGLAND

REF.NO: FKM9709