INSTALLATION INSTRUCTIONS FOR THE 88136 MICRO SWITCH CX SERIES, Issue 12 WEATHER SEALED, EXPLOSION-PROOF LIMIT SWITCHES 2813 CX Series products also meet the Brazilian hazardous mWARNING Locations Designation: IF USED IN APPLICATIONS Ex d IIC T6 Gb CONCERNING HUMAN SAFETY Ex tb IIIC T85 C Db IP 66/67 Only use NC direct opening (positive opening/positive and comply with INMETRO requirements. break) contacts, identified by the symbol. Compliance with Essential Health and Safety Requirements Do NOT use flexible/adjustable actuators. Only use has been assured by compliance with actuators designed for safety applications. ABNT NBR IEC 60079-0:2008 Do NOT defeat, tamper, remove, or bypass this switch. ABNT NBR IEC 60079-1:2009 Hazardous voltage, disconnect power before servicing. ABNT NBR IEC 60079-31:2011 Strictly adhere to all installation and maintenance ABNT NBR IEC 60529:2009 instructions. Please refer to certificate number TV 14.0553 for conditions Consult with local safety agencies and their requirements of safe use. when designing a machine-control link, interface and all control elements that affect safety. Notice: For ambient temperatures above 60 C 140 F , Failure to comply with these instructions could result in cables and cable glands suitable for a temperature of at least death or serious injury 80 C 176 F shall be used. For use in potentially explosive atmospheres caused by the presence of flammable gases, GENERAL INFORMATION fluids or vapors. The cable entry devices and the closing Sealed construction for Honeywell CX explosion-proof switches elements of unused apertures shall be of a certified flameproof provides protection from the entry of water, dust and oil as type, suitable for the conditions of use and correctly installed. defined in NEMA 3, 4, 4X, 6, 6P, 13, and IP66/IP67 as defined For use in potentially explosive atmospheres caused by the in IEC 529. presence of combustible dust. The cable entry devices and the closing elements of unused apertures shall be of a certified CX Series products with conduit types -14NPT also meet flameproof type, suitable for the conditions of use and correctly the North American Hazardous Locations Designation: Class installed. The minimum ingress protection requirement of I, Group C and D Class II, Groups E, F and G. CX listings IP6X according to EN 60529 must be satisfied. Refer to the beginning with numbers 14, 16, 24, 26, or 84 (example: 14CX1) Certificate IECEx TSA 06.0003X for conditions of safe use. also meet Class I, Group B. These explosion-proof and weather- sealed switches are protected from flammable hydrocarbon Application Note: Enclosures are based, in general, on the atmospheres, metal dust, coal dust, and grain dust, and comply broad definitions outlined in NEMA standards. Therefore, it with UL Standard: UL 894 and UL 1203, CSA Standard: C22.2 will be necessary for the user to determine that a particular no. 25-1966, C22.2 no. 30-M1986. enclosure is adequate when exposed to the specific conditions that might exist in intended applications. Except as might Select CX Series products also meet the European Hazardous otherwise be noted, all references to products relative to NEMA Locations Designation: Categories II 2 G Ex d IIC T6 and II 2 D enclosure types are based on MICRO SWITCH evaluation only. tD A21, KEMA 01ATEX2111X and complies with the European Directive on Equipment and Protective Systems Intended IMPORTANT: Switches without shaft re-storing force do not for Use in Potentially Explosive Atmospheres (2014/34/ have overtravel stops. On switches with potentiometers, use EU) commonly referred to as the ATEX Directive. Compliance care to insure that overtravel does not exceed 125 in the with the Essential Health and Safety Requirements has been application and during set-up. assured by compliance with EN 60079-0:2006, EN 60079-1:2004, EN61241-0: 2006 and EN61241-1: 2004. The European-approved products have a temperature range of -40 C to 70 C -40 F to 158 F , and when used within the maximum voltage and current specified on the product will have no heating problems.MICRO SWITCH HAZARDOUS LOCATION SWITCH, CX SERIES Issue 12 88136 LEVER POSITIONING REPLACEMENT PARTS Loosen the screw with a 9/64 inch hexagon key wrench, move Replacement switch assemblies consist of the components the lever to the desired position and securely tighten the screw subject to mechanical or electrical wear. They include basic until the teller tab can no longer be moved by hand. Then switches, cam wheels, cam followers, and springs. The tighten the screw another 1/8 to 1/4 turn to assure that the assemblies are factory adjusted to have the same operating lever is tight on the shaft. Hexagon key wrenches are provided characteristics as new complete switches. in adjusting tool set LSZ4005 for this purpose. CAM ADJUSTMENT How to Order Pretravel, overtravel, and actuation sequencing can be adjusted Catalog listings for complete switches can be converted to and/or modified in the field. No tools are required. replacement switch assembly catalog listings as follows: To Adjust Rotary Types: Momentary action rotary or plunger actuated switches 1. Lift cam follower. with shaft or plunger restoring force: To order a replacement 2. Move cam wheel axially to disengage teeth on wheel from assembly, change the first digit in the catalog listing for a teeth on shaft disc. complete switch to 9 for rotary switches or to 10 for plunger 3. Turn cam wheel to desired position. Turning in direction of switches. shaft rotation advances operate point. Pretravel decreases For example, the replacement switch assembly for a 12CX5 and overtravel thereby increases. Each notch on the cam rotary switch = 92CX5. wheel represents an operating point change of 720. The Maintained action rotary switches without shaft restoring symbols on the cam wheel simplify changing rotation force: To order a replacement assembly, change the first digit to from clockwise to counterclockwise to center neutral, a 9 and drop the first digit following the letters CX. or vise versa. If the switch operates on clockwise and counterclockwise rotation, the pointer on the cam follower Example: 12CX12=92CX2 lines up with symbol r or symbol on the cam wheel. When symbol r lines up, pretravel of 15 max. is obtained. When symbol lines up, 80 max., pretravel is obtained. Operation is in the direction Rotary Switch of the inclined surface of the symbol when or lines up Assembly with the pointer on the cam follower. 4. When cam wheel has been rotated to desired location, release cam wheel to engage with mating shaft disc. 5. Release cam follower. REPLACEMENT LEVERS To order replacement levers, order the part number which is metal stamped on either the lever or the hub. Only nonsparking levers can be used to retain the explosion- proof properties. MOUNTING ADAPTER 15PA148-CX Available for adapting CX to existing 2 hole mount. 104,5 mm 4.11 in 22,9 mm 0.90 in 5/16-18 UNC (4) 12,0 mm 80,0 mm 3.15 in 0.48 in 8,6 mm (2) 0.34 in 80,0 mm 3.15 in 21,7 mm 0.85 in CX Wiring Methods C of CX Shaft L Honeywell recommends that conduit be installed per NEC articles 501-4 and 501-5. 2 sensing.honeywell.com