RELAYS, RESISTORS, &SWITCHES (11- )

Transcription

1 Switches Section V: Table of Contents RELAYS, RESISTORS, &SWITCHES (11- ) A/C ON/OFF SWITCHES (See es) AIR OPERATED (See Misc. Section) (19- ) AMBIENT TEMP SWITCH (See Pressure Switches) BLOWER SWITCHES BINARY, TRINARY SWITCHES C.T.C. SWITCHES (See Control Switches) CIRCUIT BREAKERS CLUTCH SWITCHES COMPRESSOR SWITCHES CONTROL SWITCHES CYCLING SWITCHES (See Pressure Switches) ENGINE COOLANT FAN SWITCHES FAN SWITCHES FREON SWITCHES (See Pressure Switches) HEATER ON/OFF SWITCHES MICRO SWITCHES PIGTAILS for Relay and Switches POTENTIOMETERS PRESSURE SWITCHES REFRIGERANT TEMP. SWITCHES RELAYS RESISTORS ROCKER SWITCHES SOLENOID SWITCHES SOLENOID VALVES , 481 SUPERHEAT SWITCHES THERMOSTATIC SWITCHES TEMPERATURE SWITCHES TOGGLE SWITCHES TRINARY SWITCHES WIRING COMPONENTS Truck Air Parts

2 Relays Relaysare basicallyremote control switches operated byan electro-magneticallyproduced force which opens or closes the relay s contacts through which the main power current flows. (See Illustration A) Relaysare normallyused to provide minimum resistance on leads between apower source and consumer (motor, clutch coil, lamp, etc.). In order to keep resistance (which results in voltage drop) to aminimum, wire leads need to be as short as possbile and haveasufficient cross-section diameter/ gauge size. The inclusion of a relay means that the power current can be routed directly from power source to consumer, and that the cable section can be correspondingly large. The weaker control current between the relay and control switch means that even small cable sections produce negligible voltage drop (See Illustration B). Thereare3types of relays, normallyopen, normallyclosed andthechange-overtype, as shownbelow. Relaysareavailable in 12 and 24v. 1. Normally-open relay: 2. Normally-closed relay: 3. Change-over relay: 1. Anormally open relay is used to close the electrical circuit between power source and consumer (the consumer is switched on). These type of relays are operated by means of switches, impulse generators, or control devices. 2. In practice, the normally closed function is performed by the change-over relay. A normally closed relay is used to break the circuit between power supply and consumer (the consumer is switched off). One application would be to use this type of relay in conjunction with starting a vehicle to reduce load on the battery. 3. The change-over relay changes the current path from one electrical consumer to another. The relay is operated by adash control switch. Atypical application would be used in acompressor clutch/condenser fan circuit. Change-over relays can be used as normally open, normally closed, or change-over type relays. Eliminating harmfulvoltagespikes can be accomplished by using relays supplied withresistors and diodes. Voltage spikes from 300v to 500v can momentarily occur when a relay is switched off. Sensitive electronic components can be damaged or malfunction if these spikes reach the vehicle electrical network without suppression. A relay with a resistor (Illust. C) reduces these voltage spikes to less than 100v. A relay with a diode (Illust. D) eliminates them completely. The correct polarity of the connections to be made can be found on on the relay itself. Power current Without Relay ILLUSTRATION C ILLUSTRATION A With Relay ILLUSTRATION B ILLUSTRATION D Truck Air supplies relays for both OEM applications and add-on/universal type installations. When installing a universal or add-on relay to an electrical circuit, always check the relay s configuration beforehand to insure the proper relay is used for the application Truck Air Parts 447

3 Switches Relays Relays Blower Relay CHEV/GMC/UNIVERSAL O.E ; 5Terminal A/C Control/Fan Relay CHEV/GMC O.E ; 5 Terminal use # Heater/A/C Relay w/resistor CHEV/GMC O.E , Pin, Uses connector Blower Relay CHEV/GMC O.E Terminal A/C Control Relay CHEV/GMC O.E , Pin, Uses connector Comp./Fan Control Relay w/resistor CHEV/GMC O.E , Pin, Uses connector Relay, grey (rectangle) Topkick, Kodiak 4Terminal Relay, (square) Topkick, Kodiak 4Terminal Freightliner M2, 70 Amp Sterling F5RZ-14089CB 4Terminal Blower Relay, FORD L-SERIES O.E. D2LY19D592A 4Terminal, Uses connector Blower Relay, IHC/NAVISTAR O.E C1, C1 4Terminal, Uses connector Blower Relay Freightliner ; VFM15-F41 P/B , VFM-15-F41 5Terminal Amp Freightliner C112, C120 VF2815F24S01 5Terminal Amp Freightliner C112, C120 VF2815F14S01 5Terminal, 12 volt Relay, 30/20 amp Freightliner ; VF28-95F74-C Truck Air Parts

4 Relays Switches Relays Blower Relay IHC/NAVISTAR O.E C1 5Terminal, Uses connector Blower Relay w/resistor IHC/Navistar O.E C1 5Terminal, Uses connector A/C Relay, green NAVISTAR O.E C1 VF4-12F21-Z02, 4Terminal Amp Relay -Navistar O.E C9 5Terminal Twin Temperature Relay KYSOR &RED DOT SYSTEMS 8Terminal, 12 volt VOLVO GM O.E , VF4-15F Terminal w/diode, 40/30 Amp Relay -12volt RED DOT O.E. RD ; FRL-263 8Terminal BOSCH TYPE /UNIVERSAL Replaces Bosch P/N's: /150 (12 volt) /151 (12 volt) (24 volt) Single Pole, Double Throw 5Terminal Relay -12volt Amp Relay -24volt Amp RED DOT SYSTEMS /UNIVERSAL volt w/diode Amp volt w/diode Amp RED DOT SYSTEMS/UNIVERSAL P/B VF4-65F11-SO5-(12V) Weather Seal 5Terminal, Uses connector Relay (12 volt) w/pigtail Amp Relay (24 volt) w/pigtail Amp RED DOT A/C w/o Diode 5Terminal, Weatherproof Seal, 5wire harness UNIVERSAL Blower Relay -12volt Universal 3Terminal Relay (continued) 2008 Truck Air Parts 449

5 Switches Relays volt -w/o Diode Amp volt -w/o Diode Amp RED DOT A/C VF4-65F11-12V, VF4A-65H11-24V 5Terminal, Weather Seal Relay, 70Amp Carrier/Transair ; Terminal (2 large, 2small) Relay, 40/50 Amp Carrier/Transair ; ; Terminal Switches &Electrical Parts Blower (A/C -Fan or Rheostat) Switches are used to turn either the blower motor, or A/C system, or heater system, on or off, or control the various speeds of the motor. Note: Abbreviations used in this section: NC =Normally Closed SPST =single pole, single throw NO =Normally Open SPDT =single pole, double throw DPST =double pole, single throw DPDT =double pole, double throw Blower/Fan/Rocker/Toggle Switches CHEV/GMC O.E Terminal CHEV/GMC O.E Terminal Rotary, 4Positions CHEV/GMC O.E Terminal, 4Positions Heater Fan Switch CHEV/GMC O.E Terminal, 4Positions CHEV/GMC O.E Terminal Rotary, 4Positions Heater-A/C Switch CHEV/GMC O.E Terminal, 4Positions CHEV/GMC Topkick O.E Terminal Freightliner O.E Terminal, 4Positions Truck Air Parts

6 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches Fan Switch Freightliner O.E. A Rocker Switch Freightliner O.E. BOA ; ABPN Terminal, w/2 Air Lines Freightliner O.E. BOA Terminal, w/pigtail Harness Rocker Switch - Bunk Freightliner A Rocker Switch Freightliner A ABPN Rocker Switch Frghtlnr ABPN H IHC Transtar O.E Terminal, OFF-ON-ON-ON IHC/NAVISTAR O.E C1 5 Terminal, OFF-ON-ON-ON Blower Fan/Switch IHC/NAVISTAR O.E C1 10 Terminal, OFF-ON-ON-ON Rotary Switch - Cab Bunk KW, Peterbilt BSM 6 Terminal Rocker Switch - Air Control KW, Peterbilt BSM 5 Terminal Rocker Switch- Cab Control KW, Peterbilt BSM 5 Terminal volt 3 Speed w/wiring Harness Freightliner O.E. A Truck Air Parts 451

7 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches Rocker - Bunk Control KW, Peterbilt BSM Fan & Thermostat Switch MACK O.E Terminal, w/2 wire harness On-Off Switch PETERBILT 362 O.E. HV Terminal, 3 Positions Bunk - Fan Control Peterbilt O.E. BCH56P Bunk - Fan Control Peterbilt O.E. BCH58P Rocker Switch - Fan Control SPST, 5 Terminal Peterbilt O.E. CCH33P SPDT=single pole, double throw Peterbilt O.E. CCH52P1 5 Terminal, OFF-ON-ON-ON Volvo White/White GMC O.E Terminal, 3 Speed Rocker Switch Volvo GM w/bergstrom O.E. V Terminal, NC=normally closed Bunk Switch Volvo GM w/harness O.E /24 volt Kenworth O.E. K301-19, 65209P 5 Terminal, OFF-ON-ON-ON A/C On-Off Toggle Switch Peterbilt O.E KB 4 Terminals, 2 Positions Blower Fan Switch 12/24 volt Kenworth W900 w/kysor A/C O.E KB 5 Terminal, OFF-ON-ON-ON FORD F O.E. D3AZ-19986A 4 Terminal, 4 Positions Long shaft FORD F O.E. D5AZ-19986A 4 Terminal, 4 Positions Rocker Switch- Bunk Control KW, Peterbilt BSM Truck Air Parts

8 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches FORD L-SERIES O.E. D0AZ-19986A 5Terminal, OFF-ON-ON Ford F1HZ-19986A;YH518 4Terminal, 4Positions Ford F0HZ-19986A; YH507 4Terminal, 4Positions Ford F ; Sterling F4DZ-19986A; YH Toggle Switch (Black) 12/24 volt RED DOT O.E. 71R Terminal, ON-OFF Toggle Switch (Black) 12/24 volt SPDT=single pole, double throw RED DOT O.E. 71R Terminal, ON-OFF-ON Rocker Switch 12 volt SPDT=single pole, double throw RED DOT O.E. 71R Terminal, ON-OFF-ON Rocker Switch 12 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal, ON-OFF-ON Toggle Switch (Black) 12/24 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal, ON-OFF-ON Rocker Switch 12 volt DPST=double pole, single throw RED DOT O.E. 71R Terminal, ON-ON Rocker Switch 12 volt RED DOT O.E. 71R Terminal, ON-ON Safety Switch 12/24 volt SPDT=single pole, double throw RED DOT O.E. 71R Terminal, ON-OFF-ON Safety Toggle Switch 12/24 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal, ON-OFF-ON Blower Sw. (chrome) 12/24 volt DPDT=double pole, double throw RED DOT O.E. 71R Terminal, ON-ON-ON UNIVERSAL 12 volt and 24 volt use 5Terminal, 3Speed For short shaft use Rocker Sw -Illuminated, 12 volt SPDT=single pole, dbl throw RED DOT O.E. RD Terminal, ON-OFF-ON 2008 Truck Air Parts 453

9 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches Rocker Switch, 12 volt RED DOT O.E. RD Terminal OFF-ON-ON Rocker Sw -Illuminated, 12 volt DPDT=double pole, double throw Red Dot O.E. 71R Terminal OFF-ON-ON Blower Toggle Switch, 12/24 volt DP=double pull RED DOT O.E. 71R Terminal OFF-ON-ON-ON Blower Toggle Switch, 12/24 volt DPDT=double pole, double throw RED DOT O.E. RD Toggle Switch 4 Terminal ON-OFF-ON 2Terminal Rocker Switch-Illuminated 12 volt, Green light RED DOT O.E. 71R Terminal, ON-OFF Rocker Switch-Illuminated 12 volt, White light RED DOT O.E. 71R0532 3Terminal, ON-OFF Rocker Switch-Illuminated 24 volt, Amber light RED DOT O.E. 71R0884 4Terminal, ON-OFF Rocker Switch TransAir O.E Terminal, 12V Rocker Switch 12 volt TransAir O.E Terminal, 12V Terminal No Resistors UNIVERSAL 3 Position 12 volt and 24 volt use For long thrd shaft use volt only KYSOR O.E Tandem5 Terminals with Resistors, 3 Positions volt only KYSOR O.E Tandem 5 Terminals with Resistors, 3 Positions Used w/single Spd P.M. 2-Wire Motors Used w/single Spd P.M. 2-Wire Motors Rocker Sw-Illuminated, 24 volt DPDT=double pole, double throw RED DOT O.E. 71R Terminal OFF-ON-ON ON-OFF A/C Switch-Illuminated, 12 volt RED DOT O.E. RD Terminal Rocker Switch-Illuminated 12 volt, Blue light RED DOT O.E. 71R Terminal, ON-OFF 2008 Truck Air Parts

10 Switches & Electrical Parts Blower/Fan/Rocker/Toggle Switches UNIVERSAL , 12 volt only 3Terminals with Resistors, 3Positions Used w/single Spd P.M. 2-Wire Motors UNIVERSAL , 24 volt only 3Terminals with Resistors, 3Positions Used w/single Spd P.M. 2-Wire Motors Rocker Switch, 12 volt DPDT=double pole, dbl throw RED DOT O.E. 71R Terminal ON-OFF-ON Toggle Sw(chrome), 12/24 volt DPDT=double pole, dbl throw RED DOT O.E. 71R-0200 KYSOR O.E , Terminal ON-OFF-ON Fan Switch for Auxiliary Heater 2speed, 12/24 volt 4Terminal BLOWER SWITCH &HARNESS ASSEMBLY H.D. 40 amp Blower switch &harness for bus and coach applications gauge wire-color coded, heat shrink connectors 1-3/8 switch body, mounting nut and control switch knob Truck Air Parts 455

11 Switches & Electrical Parts Circuit Breakers Circuit Breakers are devices used in place of afuse to protect acircuit. There are manually resetable and automatic reset types of circuit breakers. Manual reset breakers remain open on overload until the reset button is depressed. Auto-reset breakers cycle or "continuously" reset until the overload is corrected. "Non-cycling" type II circuit breakers remain open until overload situation is corrected. Power must be disconnected for breaker to reset O.E Plug-in Type 30 Amp, 12 volt Non-cycling Type II IHC/NAVISTAR O.E C Amp, 12 volt Manual Push to Reset Type KYSOR O.E Amp, 12 volt Manual Push to Reset Type KYSOR O.E Amp, 12 volt Manual Push to Reset Type RED DOT O.E. RD Amp, 12volt Manual Push to Reset Type RED DOT O.E. RD Amp, 12 volt Amp, 12 volt Amp, 12 volt Amp, 12 volt Manual Push to Reset Type Amp, 12/24 volt Amp, 12/24 volt Amp, 12/24 volt Automatic Reset Stud Type w/ Bracket Automatic Reset 30 Amp, 12 volt Amp, 12/24 volt Amp, 12/24 volt Amp, 12/24 volt Amp, 12/24 volt Manual Push to Reset Type Carrier/TransAir A Amp, 12/24 volt A Amp, 12/24 volt B Amp, 12/24 volt A Amp, 12/24 volt A Amp, 12/24 volt Automatic Reset Carrier/TransAir Truck Air Parts

12 Switches & Electrical Parts Compressor &Clutch Switches Compressor or Clutch Switches are used to engage the A/C compressor clutch assembly when the switch or control is turned on Micro Switch V7-1C27E9-283; N A/C Compressor Switch, 12v IHC/NAVISTAR C wire A/C Compressor Switch, 12v Micro Switch BCH39P1 KW ; Terminal w/o lever Pushbutton 5Terminal -Illuminated, 12v Amp -12V, 3Terminals RD ; VL3L3014-D9; ; BSM A/C Switch -Illuminated RD Terminal, 12V amp, 12V,2Terminals SPDT=single pole, double throw V7-1C27E9-292; Control Switches /Modules /Potentiometers /Temperature Components Control Switches are used to operate the various functions and modes of the A/C and/or heater system, and are normally found on the A/C-Heater Control Panel Control Sensor FREIGHTLINER BOA Bunk Control Switch FREIGHTLINER A APADS A/C Protectin Unit Bunk Control Switch CM820 O.E ; P Temperature Probe Switch FREIGHTLINER O.E. BOA Evaporator Temperature Probe FREIGHTLINER VCC Duct Sensor Assembly FREIGHTLINER BOAD Temperature Potentiometer KENWORTH O.E , ACH49P1 (Male Connector) 3wire Temperature Potentiometer KENWORTH O.E (Female Connector) 4wire 2008 Truck Air Parts 457

13 Switches & Electrical Parts Control Switches /Modules /Potentiometers /Temp Comp (continued) Temperature Circuit Board KENWORTH O.E BSM Potentiometer Switch PETERBILT O.E (Male Connector) Potentiometer Switch PETERBILT O.E (Female Connector) Control Module Sensor PETERBILT P93CAA S Control Module VOLVO-GM O.E APADS/Control Module VOLVO O.E ; INDEX P APADS/Control Module VOLVO ; INDEX P APADS Control Module VOLVO , INDEX P, P C.T.C. TM Circuit Board Fits Trucks w/red Dot C.T.C. TM Systems RED DOT O.E. RD C.T.C. TM Resistor Kit Fits Trucks with Red Dot C.T.C. TM Systems RED DOT O.E. RD Sleeper Control RED DOT O.E. RD C.T.C. TM Resistor Diode (Rotary) RED DOT O.E. RD APADS/Module CM813 -ECM Mack O.E. 228RD31 INDEX P White label APADS/Module CM813 non-ecm INDEX P Truck Air Parts

14 Switches & Electrical Parts PRESSURE SWITCHES Pressure Switches are used to cycle the A/C compressor or clutch either on or off, or both, (depending upon the design of the switch) when pressures in the A/C system either exceed or fall below the proper operating pressures. In some systems, pressure switches are also used to engage the engine cooling fan. There are two basic groups of pressure switches, those normally open, and those normally closed in their factory settings. Normally open switches disallow current flow within their factory setting range. Normally closed switches allow current flow within their factory setting range. Switches should be replaced with the same type operation and pressure settings. Low pressure switches activate (open or close depending on whether the switch isnormally open or closed) on pressure drop. High pressure switches activate on pressure rise. While the settings listed reflect factory settings, most switches will fluctuate +or-3to10p.s.i. A "quick find" chart is shown below for your convenience (does not include GM or Ford Accumulator, pressure cycling type). P artno. T ype 1 Opens Closes Fitting Leads 2 T erm. m L NOH /4" SAE... 5"... SPECIAL NOH /4" SAE /2".SPECIAL NCH METRIC M10 6"... SPECIAL NCH /4" SAE... 6"... SPECIAL NCH METRIC... 6"... SPECIAL NCH /4" SAE... 5"... NONE NCH /4" SAE... 8"... NONE NCH /4" SAE... 5"... SPECIAL NCH /4" SAE... 5"... SPECIAL NCL /4" SAE... 10"... SPADE (MXF) NCH /4" SAE... 5"... SPECIAL NCH METRIC... 5"... SPECIAL NCH METRIC... 5"... SPECIAL NCH METRIC... 5"... SPECIAL NCH /4" SAE... 4"... SPECIAL NOH /4" SAE... 4"... SPECIAL NOL /4" SAE... 4"... BULLET (MXF) NOH /4" SAE... 4"... SPECIAL NCH NCH /4" SAE NCH /4" SAE NOL /4" SAE NOL /4" SAE NOL MM NOH /4" SAE... 12"... NONE NCL /4" SAE... 5"... SPADE (MXF) *. NOH /4" SAE... 5"... NONE NCH /4" SAE... 7"... NONE NOL /4" SAE... 4"... NONE NOL /4" SAE... 2"... SPADE (MXF) NOH /4" SAE... 6"... NONE Notes: P artno. T ype 1 Opens Closes Fitting Leads 2 T erm. m NCH METRIC NOL METRIC... 3"... SPADE (MXF) NOH METRIC... 6"... NONE NCH METRIC... 6"... NONE NCH METRIC... 3"... SPADE (MXF) NOH METRIC... 6"... NONE NOH METRIC M NOL METRIC M NOH MM Female NOL METRIC... 5"... BULLET (MXF) NOL /4" SAE... 5"... BULLET (MXF) NOH /4" SAE... 4"... SPECIAL NCH /4" SAE... 6"... SPECIAL NOL /4" SAE... 6"... SPECIAL NOH /4" SAE... 6"... SPECIAL NOL METRIC M NCH METRIC M NOH /4" SAE NCH M NCL M NOL /8"-24 UNF-2A NONE SPADE (M) NCH /4" SAE... 8"... NONE NCH /4" SAE... NONE SPADE (M) NCL /4" SAE... 11"... NONE NCH /4" SAE... 11"... NONE NCL METRIC M NCH /4" Flare NOL M NCH /4" Flare NCH M NCH /2" NPTF NOH /2" NPTF * Controls engine fan operation. 1 NC = Normally Closed, NO = Normally Open, L = Low Pressure, H = High Pressure. 2 Switches supplied may vary in lead length and/or terminal specifications due to various manufacturer designs. PRESSURE SWITCH IDENTIFICATION CHART (FACTORY NO.) ID# P art tno. ID# P art tno. ID# P art tno. ID# P art tno. 20PS001KA300K228K PS001KW028D007C PS027MA260K210K PS028MB260K210K PS029MB030E007C PS030MB300K200K PS034MA375K250R PS059MB300K210K PS125MA034D006B PS127MA034D025G PS129MB350K250K PS131MA260K180K PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS PS C1-205NC C1-275NC NC NO NO NC NC NC NC NC NC IMR NO PM-516K2-034NOA PM-516N PM-635M2-325NCA PM-637M2-3240NOA PM-638M PM-516K2-034NOA PM-546R2-275NCA PS-80KI024B Truck Air Parts 459

15 Switches & Electrical Parts Pressure Switches Accumulator Pressure Cycling Switch (R12) Normally Open. Female Thread 1/4" SAE Cycles Clutch off atapprox. 25 p.s.i., on at approx. 46 p.s.i. CHEV &GMC Brigadier &Bruin O.E , Compressor Pressure Cycling Switch (R12) M12 thread CHEV/GMC O.E Black w/yellow Band -2Pin Compressor Pressure Cycling Switch (R12) M12 thread CHEV/GMC O.E Black w/yellow Band -2Pin Accumulator Pressure Switch (R134a) 3/16 thread CHEV/GMC O.E , , Beige -2Pin A/C Comp.Pressure Cycling Switch (R134a) Low press Normally Open. Open: 30-32psi, Close: 38-40psi M12 Metric Female CHEV/GMC Black -2Pin A/C Comp.Refrigerant Press Switch (R134a) Normally closed. Open: 350psi, Close: 250psi CHEV/GMC O.E ; M10 Male thread, Green -2Pin A/C Comp.High Pressure Cut-off switch assy. CHEV/GMC O.E M10 Metric Threads Normally Closed. Opens at430 psi, Closes at 180 psi. Needed when retrofitting vehicles without O.E. H.P.cutout switch (Also see & ) High Pressure Cut-Out Switch CHEV/GMC (R134a) O.E , , Normally closed 257 F Blue -2Pin (Replaces orange) A/C Comp.Low Pressure Cut-Out Switch (R134a) M12 thread CHEV/GMC O.E Black -2Pin Comp. Low Press Cycling Switch (R134a) M12 thread CHEV/GMC O.E M12 thread, Black/Yellow -2Pin A/C Cycling Switch (R134a) M12 thread CHEV/GMC O.E A/C Low Pressure Cut Off Switch (R134a) M12 thread, 2Pin CHEV/GMC O.E TECH TIP Low Pressure Switches Activate on pressure drop Spade Low pressure Cycling Switch M12 threads, Yellow GM A/C Cycling Switch M12 threads Topkick/Kodiak A/C Cycling Switch Silverado, Suburban High Pressure Switches Activate on arise in pressure Truck Air Parts