B40 Sealed External Cage Industrial and ASME B31.1 Construction Installation and Operating Manual Liquid Level Switches Read this Manual Before Installing This manual provides information on the B40 Sealed External Cage Liquid Level Switch. It is important that all instructions are read carefully and followed in sequence. Detailed instructions are included in the Installation section of this manual. Conventions Used in this Manual Certain conventions are used in this manual to convey specific types of information. General technical material, support data, and safety information are presented in narrative form. The following styles are used for notes, cautions, and warnings. Notes Notes contain information that augments or clarifies an operating step. Notes do not normally contain actions. They follow the procedural steps to which they refer. Cautions Cautions alert the technician to special conditions that could injure personnel, damage equipment, or reduce a component’s mechanical integrity. Cautions are also used to alert the technician to unsafe practices or the need for special protective equipment or specific materials. In this manual, a caution box indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. Warnings Warnings identify potentially dangerous situations or serious hazards. In this manual, a warning indicates an imminently hazardous situation which, if not avoided, could result in serious injury or death. WARNING! Explosion hazard. Do not connect or disconnect equipment unless power has been switched off or the area is known to be non-hazardous. Low Voltage Directive For use in Category II installations. If equipment is used in a manner not specified by manufacturer, protection provided by equipment may be impaired. Notice of Copyright and Limitations Copyright © 2015 Magnetrol® International, Incorporated. All rights reserved. Magnetrol® reserves the right to make changes to the product described in this manual at any time without notice. MAGNETROL makes no warranty with respect to the accuracy of the information in this manual. Warranty All MAGNETROL mechanical level and flow controls are warranted free of defects in materials or workmanship for five full years from the date of original factory shipment. If returned within the warranty period; and, upon factory inspection of the control, the cause of the claim is determined to be covered under the warranty; then, MAGNETROL will repair or replace the control at no cost to the purchaser (or owner) other than transportation. MAGNETROL shall not be liable for misapplication, labor claims, direct or consequential damage or expense arising from the installation or use of equipment. There are no other warranties expressed or implied, except special written warranties covering some MAGNETROL products. Quality Assurance The quality assurance system in place at MAGNETROL guarantees the highest level of quality throughout the company. MAGNETROL is committed to providing full customer satisfaction both in quality products and quality service. The MAGNETROL quality assurance system is registered to ISO 9001 affirming its commitment to known international quality standards providing the strongest assurance of product/service quality available. B40 Sealed External Cage Liquid Level Switches Table of Contents 1.0 Introduction 1.1 Principle of Operation . . . . . . . . . . . . . . . . . . 4 1.2 Operating Cycle . . . . . . . . . . . . . . . . . . . . . . . 4 2.0 Installation 2.1 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.0 Preventive Maintenance 3.1 What to do. . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1.1 Keep control clean . . . . . . . . . . . . . . . . 7 3.1.2 Inspect switch mechanisms, terminals, and connections monthly. . . . . . . . . . . 7 3.1.3 Inspect entire unit periodically. . . . . . . 8 3.2 What to avoid . . . . . . . . . . . . . . . . . . . . . . . . 8 46-602 B40 Liquid Level Switches 4.0 Reference Information 4.1 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . 9 4.1.1 Check switch mechanism . . . . . . . . . . . 9 4.2 Agency Approvals. . . . . . . . . . . . . . . . . . . . . 10 4.3 Replacement Parts . . . . . . . . . . . . . . . . . . . . 11 4.4 Specifications . . . . . . . . . . . . . . . . . . . . . . . . 12 4.4.1 Dimensional Specifications . . . . . . . . 12 4.5 Model Numbers. . . . . . . . . . . . . . . . . . . . . . 16 4.5.1 Part Number Industrial Grade Construction . . . . . . . . . . . . . . 16 4.5.2 Part Number ASME B31.1 Construction . . . . . . . . . . . . . . 18 1.0 Introduction Magnetrol® B40 level switches are specifically designed for extremely high pressure, high temperature service conditions found principally in power plants, petroleum and petrochemical refineries, and nuclear power installations. Caution: If equipment is used in a manner not specified by manufacturer, protection provided by equipment may be impaired. Snap Switch Pivot 3 2 1 1.1 Tension Spring Swing-In Position Float Pivots Figure 1 1.2 Principle of Operation The design of MAGNETROL float-operated level switches is based upon the principle that a magnetic field will “see through” non-magnetic materials such as 316 stainless steel. In this case, the float moves a magnetic attraction sleeve (1) within a non-magnetic enclosing tube (2) and actuates a switch mechanism (3). The enclosing tube provides a pressure seal to the chamber and, therefore, to the process. Operating Cycle Switch Tripped As the liquid level decreases in the chamber, refer to Figure 1, the float moves the magnetic attraction sleeve up, within the enclosing tube, and into the field of the switch mechanism magnet. As a result, the magnet is drawn in tightly to the enclosing tube causing the switch to trip, “making” or “breaking” an electrical circuit. As the liquid level rises, the float moves the attraction sleeve out of the magnetic field, releasing the switch at a predetermined low level (see Figure 2). The tension spring ensures the return of the switch in a snap action. Swing-Out Position Figure 2 Switch Released 4 2.0 Installation 2.1 Unpacking Unpack the instrument carefully, inspecting for damage. Report any concealed damage to the carrier within 24 hours. Check the contents listed on the packing slip and purchase order. Check and record the serial number for future reference when ordering parts. 46-602 B40 Liquid Level Switches Pressure equalizing line to pressure vessel Vent line from chamber Conduit connection to switch shousing 1" schedule 80 beveled in-line weld nipples for attaching control to system (typical) Do not insulate chamber, fins, or switch housing Rising Level Falling Level Reference lines for switch actuating levels Inlet line to chamber Liquid equalizing line to pressure vessel must be vertical to within three degrees Figure 3 2.2 Piping Figure 3 shows a typical piping installation of a Model B40 in a pipeline to a pressure vessel. Reference lines, on float chamber, should be aligned to correspond with liquid level in the vessel at which switch control is desired (refer to dimensional drawing, if furnished). Use pipe of sufficient strength to support the unit. If necessary, provide a stand or hanger to help support its weight. All piping should be straight and free of low spots or pockets so that the lower liquid line will drain towards the vessel and the upper vapor line will drain towards the control. Pipeline should be insulated, as shown, to minimize loss of liquid temperature and further control of the heat in the area of the switch housing. DO NOT insulate switch housing. NOTE: Manufacturer recommends that when welding chrome-moly steel piping, the procedures used conform to AWS-D10.8-61. Caution: DO NOT INSULATE SWITCH MECHANISM HOUSING. 2.3 Mounting Caution: This instrument is intended for use in Installation Category II, Pollution Degree 2 locations. Before welding, adjust piping to bring control to a vertical position. B40 level controls require that the enclosing tube be mounted within three degrees of vertical in all directions. A three degree slant is noticeable by eye, but installation should be checked using a spirit level. Caution: Operation of all buoyancy type level devices should be done in such a way as to minimize the action of dynamic forces on the float or displacer sensing element. Good practice for reducing the likelihood of damage to the control is to equalize pressure across the device slowly. 46-602 B40 Liquid Level Switches 5 2.4 Wiring Caution: Level controls are shipped from the factory with the enclosing tube tightened and the middle set screw, on the housing base, locked to the enclosing tube. Failure to loosen the set screw prior to repositioning the conduit connection may cause the enclosing tube to loosen, resulting in the possible leakage of the process liquid or vapor. Most B40 level control switch housings are designed to allow 360° positioning of the conduit outlet by loosening the set screw(s) located under the housing base. High temperature wire must be used between control and first junction box located in a cooler area. NOTE: A switch or circuit breaker shall be installed in close proximity to equipment and within easy reach of operator. It shall be marked as the disconnecting device for equipment. 1. To gain access to switch mechanism, remove switch housing cover. 2. Pull in supply wires (conductors), wrap them around enclosing tube under the baffle plate and connect to proper terminals. Be certain that excess wire does not interfere with actuation of switch, and that adequate clearance exists for replacement of switch housing cover. NOTE: For supply connections in installations with ambient temperature up to +70° C, use wire with a minimum rating of +75° C as required by process conditions. Installations with ambient temperatures up to +80° C require wire with a minimum rating of +85° C as required by process conditions. Use a minimum of 14 AWG wire for power and ground field wires. NOTE: See Figure 4 or bulletin on switch mechanism furnished for proper terminal connections. Switch bulletin numbers are listed in the chart below. Internal Circuit (Left) Switch Close on low level 4 1 5 2 6 3 Internal Circuit (Right) Switch Load Load Common Common Close on high level Line Close on high level Load Load Figure 4 6 Close on low level Switch Series Letter Description Bulletin No. C, D, S Dry Contact Switch 42-683 F Hermetically Sealed Snap Switch 42-683 HS Hermetically Sealed Snap Switch 42-694 R High Temperature Snap Switch 42-799 Line 3. Connect power supply to control and test switch action by varying liquid level in float chamber. If switch mechanism fails to function, check vertical alignment of control and consult installation instructions in switch mechanism bulletin. 46-602 B40 Liquid Level Switches 4. Replace switch housing cover and place control into service. If control has been furnished with NEMA 7/9 explosion proof (cast) or NEMA 4 moisture proof (gasketed) switch housing, check the following: 1. After wiring connections have been completed, housings must be sealed at the conduit outlet with a suitable compound to prevent entrance of air. 2. Check cover to base fit to be certain gasketed joint is tight. A positive seal is necessary to prevent infiltration of moisture laden air or corrosive gases into switch housings. 3.0 Preventive Maintenance Periodic inspections are a necessary means to keep your MAGNETROL level control in good working order. This control is a safety device to protect the valuable equipment it serves. A systematic program of preventive maintenance must be implemented when the control is placed into service. If the following is observed, your control will provide reliable protection of your capital equipment for many years. 3.1 What to do 3.1.1 Keep control clean Be sure the switch housing cover is always in place on the control. This cover is designed to keep dust and dirt from interfering with switch mechanism operation. In addition, it protects against damaging moisture, and acts as a safety feature by keeping bare wires and terminals from being exposed. Should the housing cover or any seals become damaged or misplaced, obtain a replacement immediately. 3.1.2 Inspect switch mechanisms, terminals, and connections monthly a. Dry contact switches should be inspected for excessive wear on actuating lever or misalignment of adjustment screw at point of contact between screw and lever. Such wear can cause false switch actuating levels. Replace switch mechanism if wear or misalignment are apparent. 46-602 B40 Liquid Level Switches 7 b. DO NOT operate your control with defective or maladjusted switch mechanism (refer to bulletin on switch mechanisms furnished for service instructions). c. MAGNETROL controls may sometimes be exposed to excessive heat or moisture. Under such conditions, insulation on electrical wiring may become brittle, eventually breaking or peeling away. The resulting bare wires can cause short circuits. Check wiring carefully and replace at the first sign of brittle insulation. d. Vibration may sometimes cause terminal screws to work loose. Check all terminal connections to make certain that screws are tightened. NOTE: As a matter of good practice, spare switches should be kept on hand at all times. 3.1.3 Inspect entire unit periodically Isolate control from vessel. Raise and lower liquid level to check for switch contact and reset. 3.2 What to avoid 1. Never leave switch housing cover off the control longer than necessary to make routine inspections. 2. Never place a jumper wire across terminals to “cut-out” the control. If a “jumper” is necessary for test purposes, be certain it is removed before placing control into service. 3. Never attempt to make adjustments or replace switches without reading instructions carefully. Certain adjustments provided for in level controls should not be attempted in the field. When in doubt, consult the factory or your local representative. 4. Never use lubricants on pivots of switch mechanisms. A sufficient amount of lubricant has been applied at the factory to ensure a lifetime of service. Further oiling is unnecessary and will only tend to attract dust and dirt which can interfere with mechanism operation. 8 46-602 B40 Liquid Level Switches 4.0 Reference Information 4.1 Troubleshooting a. b. c. d. e. Usually the first indication of improper operation is failure of the controlled equipment to function, i.e., pump will not start (or stop), signal lamps fail to light, etc. When these symptoms occur, whether at time of installation or during routine service thereafter, check the following potential external causes first. Fuses may be blown. Reset button(s) may need resetting. Power switch may be open. Controlled equipment may be faulty. Wiring leading to control may be defective. If a thorough inspection of these possible conditions fails to locate the trouble, proceed next to a check of the control's switch mechanism. 4.1.1 Check switch mechanism 1. Pull disconnect switch or otherwise disconnect power to the control. 2. Remove switch housing cover. 3. Disconnect power wiring from switch assembly. 4. Swing magnet assembly in and out by hand to check carefully for any sign of binding. Assembly should require minimal force to move it through its full swing. 5. If binding exists, magnet may be rubbing enclosing tube. If magnet is rubbing, loosen magnet clamp screw and shift magnet position. Retighten magnet clamp screw. 6. If switch magnet assembly swings freely and mechanism still fails to actuate, check installation of control to be certain it is within the specified three degrees of vertical. (Use spirit level on side of enclosing tube in two places, 90° apart.) Refer to Figure 3 on page 5. 7. Check microswitch continuity with ohmmeter. 8. If switch mechanism is not operating satisfactorily, consult factory. 46-602 B40 Liquid Level Switches 9 4.2 Agency Approvals AgENCy APPROvED MODEL APPROvAL CLASSES FM All with an electric switch mechanism and a housing listed as Type 4X/7/9 Class I, Div 1, Groups C & D Class II, Div 1, Groups E, F & G All with an electric switch mechanism and a housing listed as Type 4X/7/9 Class I, Div 1, Group B Class I, Div 1, Groups B, C & D Class II, Div 1, Groups E, F & G All with a Series 2, 3, F, L or HS electric switch mechanism and a housing listed as CSA Type 4X Class I, Div 2, Groups B, C & D All with an electric switch mechanism and a housing listed as Type 4X/7/9 Class I, Div 1, Groups C & D Class II, Div 1, Groups E, F & G All with an electric switch mechanism and a housing listed as Type 4X/7/9 Class I, Div 1, Group B Class I, Div 1, Groups B, C & D Class II, Div 1, Groups E, F & G All with an electric switch mechanism and an ATEX housing ATEX II 2 G EEx d IIC T6 94/9/EC IEC Ex Ex d IIC T6 IP 66 Low Voltage Directives 2006/95/EC Per Harmonized Standard: EN 61010-1/1993 & Amendment No. 1 Installation Category II Pollution Degree 2 CSA ATEX / IEC Ex ➀ CE ➀ IEC Installation Instructions: The cable entry and closing devices shall be Ex d certified suitable for the conditions of use and correctly installed. For ambient temperatures above +55° C or for process temperatures above +150° C, suitable heat resistant cables shall be used. Heat extensions (between process connection and housing) shall never be insulated. Special conditions for safe use: When the equipment is installed in process temperatures higher than +85° C the temperature classification must be reduced according to the following table as per IEC60079-0. Maximum Process Temperature Temperature Classification < 85° C T6 < 100° C T5 < 135° C T4 < 200° C T3 < 300° C T2 < 450° C T1 These units are in conformity with IECEx KEM 05.0020X Classification Ex d IIC T6 Tambient -40° C to +70° C 10 46-602 B40 Liquid Level Switches 4.3 Replacement Parts Item Description Model B40-1F30 B40-1B60 B40-1C50 B40-PF30 B40-PB60 B40-3C30 B40-PC30 1 Housing Cover 2 Housing Base 3 Switch mechanism 4 Jam nut(s) 5 Attraction sleeve 6 E-tube gasket 7 Enclosing tube 8 O-ring 9 Float chamber assembly IMPORTANT: B40-PC20 B40-5C20 B40-HF30 B40-HB60 B40-4C40 B40-PC40 B40-HC40 Refer to bulletin 42-683, 42-694 or 42-799 10-2106-004 (qty. 4) 32-4203-001 04-4511-002 12-1204-001 Z32-6312-001 12-2201-215 Z32-6346-003 Z32-6357-002 Z32-6308-002 Z32-6357-003 N/A 12-2201-215 N/A N/A Consult Factory When ordering, please specify: A. Model and serial number of control. B. Name and number of replacement assembly. Connections: 1" or 11⁄2" Socket Weld 1" Schedule 80 Beveled Welding Nipples Figure 10 46-602 B40 Liquid Level Switches 11 4.4 Specifications 4.4.1 Dimensional Inches (mm) A Housing B Rotation Clearance C D E A Outline Dimensions B C D E NEMA 4X Carbon steel 4.64 (117) 3.25 (82) 6.82 (173) 8.50 (215) 3 ⁄4" NPT Single conduit NEMA 4X/7/9 Cast iron 5.62 (142) 5.25 (133) 8.88 (225) 10.50 (266) 1" NPT Single conduit NEMA 4X/7/9 Die-cast aluminum 5.93 (150) 3.87 (98) 8.46 (214) 10.12 (257) 1" NPT Dual conduit E Plug 1½" Socket Weld 8.50 (215) 7.19 (182) 4.75 (121) 6.62 (168) CL O.D. 2.50 (64) Max. Switch Actuates Rising Level 1.25 (32) Max. 9.50 (241) Switch Actuates Falling Level 7.56 (192) 1½" Socket Weld 19.62 (498) A B40-3C30 / B40-PC30 Rotation Clearance B C D E A Rotation Clearance 7.19 (182) B 5.56 (141) C D 4.18 (106) CL 4.15 (105) 2.50 (64) Max. Switch Actuates Rising Level 1.25 (32) Max. 8.30 (210) Switch Actuates Falling Level E 1" Socket Weld E Plug 9.50 (241) 6.63 (168) CL 7.19 (182) 19.88 (504) 11/2" Socket Weld B40-5C20 / B40-PC20 7.19 (182) 1.25 (32) Max. Switch Actuates Falling Level 2.50 (64) Max. Switch Actuates Rising Level 11/2" Socket Weld 25.63 (651) 5.06 (129) 10.12 (257) 10.56 (268) B40-PC40 and B40-HC40 12 E Plug 1" Socket Weld NOTES: 1. Allow 8 in (203 mm) overhead clearance for cover removal. 2. Maximum ambient temperature at switch head should not exceed +140° F (+60° C). 46-602 B40 Liquid Level Switches 4.4.1 Dimensional Inches (mm) (continued) A Rotation Clearance B C D E E Plug 1½" Socket Weld 9.50 (241) 6.63 (168) CL 7.19 (182) 2.50 (64) Max. Switch Actuates Rising Level 1.25 (32) Max. 5.06 (129) 10.12 (257) Switch Actuates Falling Level 6.12 (155) 1½" Socket Weld 22.63 (574) 9.06 (230) A B40-4C40 B C Rotation Clearance D E E Plug 1" Weldolet 8.50 (216) 7.19 (182) 9.75 (248) 4.88 (124) Switch Actuates Falling Level 1.25 (32) Max. 7.07 (180) 2.50 (64) Max. Switch Actuates Rising Level 6.63 CL (168) 5.37 (136) 1" Weldolet 19.63 (499) B40-1C50 46-602 B40 Liquid Level Switches 13 4.4.1 Dimensional Inches (mm) (continued) Housing A Outline Dimensions B C D E NEMA 4X Carbon steel 4.64 (117) 3.25 (82) 6.82 (173) 8.50 (215) 3 ⁄4" NPT Single conduit NEMA 4X/7/9 Cast iron 5.62 (142) 5.25 (133) 8.88 (225) 10.50 (266) 1" NPT Single conduit NEMA 4X/7/9 Die-cast aluminum 5.93 (150) 3.87 (98) 8.46 (214) 10.12 (257) 1" NPT Dual conduit A B Rotation Clearance 1" Socket Weld C D E 15.62 (396) E Plug 7.19 (182) 7.19 (182) A C L 1.25 (32) Max. 5.62 (143) 2.50 (64) Max. Switch Actuates Rising Level 5.56 (141) O.D. B Rotation Clearance Switch Actuates Falling Level C D 1" Socket Weld B40-1B60 6.68 (169) B40-2B60 7.06 (179) E B40-1B60 17.88 (454) B40-2B60 18.63 (473) E Plug B40-1B60 and B40-2B60 7.19 (182) 1" Sockolet 7.19 (182) 4.15 (105) 2.50 (64) Max. Switch Actuates Rising Level CL 1.25 (32) Max. 4.15 (105) 5.56 (141) Switch Actuates Falling Level 1" Sockolet 8.18 (208) 20.88 (530) B40-PB60 and B40-HB60 14 46-602 B40 Liquid Level Switches 4.4.1 Dimensional Inches (mm) (continued) A B Rotation Clearance C D E E Plug 7.19 (182) 1" Schedule 80 Weldolet 7.19 (182) 3.90 (99) 2.50 (64) Max. Switch Actuates Rising Level CL 1.25 (32) Max. 3.90 (99) 5.56 (141) Switch Actuates Falling Level 1" Schedule 80 Weldolet 8.18 (208) 20.88 (530) A B40-HF30 and B40-PF30 B Rotation Clearance 1" Schedule 80 Beveled Nipple C D E E Plug 14.50 (368) 7.19 (182) 7.19 (182) CL 1.25 (32) Max. 4.50 (114) 2.50 (64) Max. Switch Actuates Rising Level 5.56 (141) O.D. Switch Actuates Falling Level 1" Schedule 80 Beveled Nipple B40-1F30 6.68 (169) B40-2F30 7.06 (179) B40-1F30 17.88 (454) B40-2F30 18.63 (473) B40-1F30 and B40-2F30 46-602 B40 Liquid Level Switches 15 4.5 Model Numbers 4.5.1 Part Number Industrial grade Construction BASIC MODEL B40 B40 Liquid Level Switch MATERIALS OF CONSTRuCTION/PRESSuRE RATINg PSI (BAR) Code 1F30 Chamber Material Chrome-Moly ≈ Min. Float Tank Connection Material➀ S.g. 500 750 800 1000 2067 (142) 1777 (122) 1636 (112) 1615 (111) 651 (44) 1857 (128) 1566 (107) 1294 (89) 1240 (85) — 11/2" socket weld 0.65 1925 (132) 1820 (125) 1250 (86) 1100 (75) 215 (14) 11/2" socket weld 3700 (255) 3543 (244) 3169 (218) 3129 (215) 3011 (207) 1" socket weld 2085 (143) 1820 (125) 1350 (93) 1110 (76) 165 (11) 1" weld coupling 2533 (174) 2010 (138) 1872 (129) 1845 (127) 956 (65) 1" welding nipple 1" socket weld 2F30 1" welding nipple 304 SS 316 SS 2B60 1" socket weld 3C30 Carbon Steel ∆ 4C40 316 SS 5C20 100 321/347 SS 1B60 Carbon Steel ∆ Temperature (°F) 321/347 SS 1C50 Chrome-Moly ≈ ELECTRIC SWITCH MECHANISM AND ENCLOSuRE FOR ALL MODELS EXCEPT B40-5C20 ➁ Switch Description Series F Snap Switch Hermetically Sealed Series R High Temp Snap Switch Series S Snap Switch for AC Current Applications Series S Snap Switch for DC Current Applications Series 8 Hermetically Sealed Snap Switch Series 9 Hermetically Sealed Snap Switch Maximum ➂ Process Temperature ° F (° C) 750 (399) 750 (399) 550 (288) 400 (204) 750 (399) 750 (399) One Set Point NEMA 4X/7/9 Aluminum, Polymer Coated Aluminum, Cl I Div. 1 grp B ATEX Ex II 2 g EEx d IIC T6 SPDT FKB FKK FC9 DPDT FNB FNK FF9 SPDT RKB RKK RC9 SPDT SKB SKK SA9 DPDT SNB SNK SB9 SPDT SLB SLK SC9 DPDT SOB SOK SF9 SPDT 8KB 8KK 8C9 DPDT 8NB 8NK 8F9 SPDT 9KB 9KK 9C9 DPDT 9NB 9NK 9F9 (continued on next page) 16 46-602 B40 Liquid Level Switches 4.5.1 Part Number Industrial grade Construction (continued) ELECTRIC SWITCH MECHANISM AND ENCLOSuRE FOR ALL MODELS EXCEPT B40-5C20 ➁ Switch Description Maximum ➂ Process Temperature ° F (° C) Series R High Temp Snap Switch 1000 (538) Series 9 Hermetically Sealed Snap Switch 1000 (538) One Set Point CS/ALuMINuM CAST IRON TyPE 4X Class I, Div. 1, Class I, Div. 1, groups C & D groups B SPDT R1M RKM RKW DPDT RDM RNM RNW SPDT 9AM 9KM 9KW DPDT 9DM 9NM 9NW ELECTRIC SWITCH MECHANISM AND ENCLOSuRE FOR MODEL B40-5C20 ONLy ➁ Switch Description Maximum ➂ Process Temperature ° F (° C) Series C Snap Switch 450 (232) Series D Snap Switch for DC Current Applications 250 (121) Series F Snap Switch Hermetically Sealed 750 (399) Series HS 5 amp Snap Switch Hermetically Sealed w/Terminal Block 550 ➃ (288) Series HS 5 amp Snap Switch Hermetically Sealed w/Wiring Leads 550 ➃ (288) One Set Point NEMA 4X/7/9 Aluminum, Polymer Coated Aluminum, Cl I Div. 1 grp B ATEX Ex II 2 g EEx d IIC T6 SPDT CKB CKK CC9 DPDT CNB CNK CF9 SPDT DKB DKK DC9 DPDT DNB DNK DF9 SPDT FKB FKK FC9 DPDT FNB FNK FF9 SPDT HM3 HM4 HA9 DPDT HM7 HM8 HB9 SPDT HMJ HMK — DPDT HMS HMT — ➀ Float material based on availability. Both 321 SS and 347 SS are stabilized austenitic stainless steels. ➁ Consult factory for NEMA 4X/7/9 cast iron housings. ➂ Process temperature based on +100° F (+38° C) ambient. ➃ On steam applications, temperature down-rated to +400° F (+204° C) process at +100° F (+38° C) ambient. ƒ Use caution when specifying carbon steel above +800° F (+427° C) 46-602 B40 Liquid Level Switches 17 4.5.2 Part Number ASME B31.1 Construction BASIC MODEL B40 B40 Liquid Level Switch MATERIALS OF CONSTRuCTION/PRESSuRE RATINg (PSIg) Chamber Material Float Material Tank Connection Minimum S.g. Temperature° F 100 500 750 800 1000 1830 1734 1584 — — — — 1584 1541 674 1830 1734 1584 — — — — 1584 1541 674 11/2” socket weld 1701 1701 1293 — — 11/2” socket weld 3750 3571 3194 — — — — 3194 3155 3036 1” socket weld 1667 1667 1267 — — PF30 1” butt-weld HF30 Chrome-Moly PB60 1” socket weld HB60 PC30 Carbon Steel ≈ PC40 316 SS HC40 PC20 Carbon Steel ≈ 321/347 SS➀ 0.65 ➀ Float material based on availability. Both 321SS and 347SS are stabilized austenitic stainless steels. ➁ Consult factory for NEMA 4X/7/9 cast iron housings. ➂ Aluminum enclosure limited to +750° F (+399° C) in hazardous locations. ➃ Process temperature based on +100° F (+38° C) ambient. ƒ On steam applications, temperature down-rated to +400° F (+204° C) process at +100° F (+38° C) ambient. ≈ Use caution when specifying carbon steel above +800° F (+427° C) B 18 4 0 46-602 B40 Liquid Level Switches 4.5.2 Part Number ASME B31.1 Construction (continued) ELECTRIC SWITCH MECHANISM AND ENCLOSuRE FOR MODEL B40-PXXX ONLy NEMA 4X/7/9 Aluminum Enclosure ② ③ Process Temperature Range ➃ One Set Point Class I, Div. 1 groups C & D Class I, Div. 1 group B ATEX Series C Snap Switch -40° to +450° F (-40° to +232° C) SPDT DPDT CKB CNB CKK CNK CC9 CF9 Series D Snap Switch for DC Current Applications -40° to +250° F (-40° to +121° C) SPDT DPDT DKB DNB DKK DNK DC9 DF9 Series F Snap Switch Hermetically Sealed -50° to +750° F (-46° to +399° C) SPDT DPDT FKB FNB FKK FNK FC9 FF9 Series HS 5 amp Snap Switch Hermetically Sealed w/Terminal Block -50° to +550° F ⑤ (-46° to +288° C) SPDT DPDT HM3 HM7 HM4 HM8 HA9 HB9 Series HS 5 amp Snap Switch Hermetically Sealed w/Wiring Leads -50° to +550° F ⑤ (-46° to +288° C) SPDT DPDT HMJ HMS HMK HMT — — Series R snap switch -40° to +750° F (-40° to +399° C) SPDT RKB RKK RC9 Series S Snap Switch for AC Current Applications -40° to +550° F (-40° to +288° C) SPDT DPDT SKB SNB SKK SNK SA9 SB9 Series S Snap Switch for DC Current Applications Series 8 Hermetically Sealed Snap Switch -40° to +250° F (-40° to +121° C) -50° to +750° F (-46° to +399° C) SPDT DPDT SPDT DPDT SLB SOB 8KB 8NB SLK SOK 8KK 8NK SC9 SF9 8C9 8F9 Series 9 Hermetically Sealed Snap Switch -50° to +750° F (-46° to +399° C) SPDT DPDT 9KB 9NB 9KK 9NK 9C9 9F9 Switch Description B 4 0 P X X X ELECTRIC SWITCH MECHANISM AND ENCLOSuRE FOR MODEL B40-HXXX ONLy NEMA 4X NEMA 4X/7/9 Switch Description Process Temperature Range ➃ One Set Point Steel polymer coated Cast iron, Class I, Div 1, grps C&D Cast iron, Class I, Div 1, group B Series R High Temperature Snap Switch -40° to +1000° F (-40° to +538° C) SPDT DPDT R1M RDM RKM RNM RKW RNW Series 9 Hermetically Sealed Snap Switch -50° to +1000° F (-46° to +538° C) SPDT DPDT 9AM 9DM 9KM 9NM 9KW 9NW B 4 0 H 46-602 B40 Liquid Level Switches X X X 19 ASSuRED quALITy & SERvICE COST LESS Service Policy Return Material Procedure Owners of MAGNETROL controls may request the return of a control or any part of a control for complete rebuilding or replacement. They will be rebuilt or replaced promptly. Controls returned under our service policy must be returned by Prepaid transportation. MAGNETROL will repair or replace the control at no cost to the purchaser (or owner) other than transportation if: So that we may efficiently process any materials that are returned, it is essential that a “Return Material Authorization” (RMA) number be obtained from the factory, prior to the material’s return. This is available through a MAGNETROL local representative or by contacting the factory. Please supply the following information: 1. Returned within the warranty period; and 2. The factory inspection finds the cause of the claim to be covered under the warranty. If the trouble is the result of conditions beyond our control; or, is NOT covered by the warranty, there will be charges for labor and the parts required to rebuild or replace the equipment. In some cases it may be expedient to ship replacement parts; or, in extreme cases a complete new control, to replace the original equipment before it is returned. If this is desired, notify the factory of both the model and serial numbers of the control to be replaced. In such cases, credit for the materials returned will be determined on the basis of the applicability of our warranty. 1. 2. 3. 4. 5. Company Name Description of Material Serial Number Reason for Return Application Any unit that was used in a process must be properly cleaned in accordance with OSHA standards, before it is returned to the factory. A Material Safety Data Sheet (MSDS) must accompany material that was used in any media. All shipments returned to the factory must be by prepaid transportation. All replacements will be shipped F.O.B. factory. No claims for misapplication, labor, direct or consequential damage will be allowed. 705 Enterprise Street • Aurora, Illinois 60504-8149 • 630-969-4000 • Fax 630-969-9489 [email protected] • www.magnetrol.com Copyright © 2015 Magnetrol International, Incorporated. All rights reserved. Printed in the USA. BuLLETIN: 46-602.16 EFFECTIvE: August 2015 SuPERSEDES: February 2015