STANDARD BULBS & ADAPTERSSPECIAL APPLICATION SWICHGAGEÒ . ABS, ESRALARM BEFORE SHUT-DOWNTWO SWITCH OPTIONABS: SWICHGAGEÒ with Alarm Before Shut-downThe ABS has a standard, front limit contact for hightemperature equipment shut-down and an internal SPDTmicro switch for Alarm Before Shut-Down (see WiringDiagram). When the high side (preset high temperature point)of the micro switch SETS, the NO terminal completes a circuitto activate an alarm. A decrease in temperature ofapproximately 10% of scale is necessary before the switch willRESET and open the circuit; a continued increase willcomplete the shut-down circuit.NOTE: The front contact shut-down limitsetting (adjustable) and micro switchhigh point are preset at the factory; ifsettings other than standard arenecessary, then specify when ordering.MICRO-SWITCH" LIMIT CONTROLESR: SWICHGAGEÒ WITH High Limit Micro-SwitchThe ESR is an accurate temperature gauge with a 3-wire,SPOT Micro-Switch, for high limit alarm and/or shut-down ofequipment.The Switch will SET (see wiring diagram, NO closes) on risingtemperature; it will RESET as temperature falls toapproximately 10% of scale below the SET point. By knowingthe high SET point, the ESR can be used to make or break acircuit.EXAMPLE: When temp. rises on the 250°F model to the SETlimit, a fan could be turned-on; when the temp. falls,approximately 25°F, to the RESET point the fan would turn-off.NOTE: Specify high limit when ordering.TROUBLE SHOOTING TIPS (Where problem appears to involve Murphy products)PROBLEMPROBABLE CAUSE & POSSIBLE CORRECTIONEngine will not startBlown fuse in magnetic switch circuit: replace with 14 A fuse.False ground in control circuit: repair.Open circuit (Fault Sensitive): repair.Control circuit overloaded by accessories: reroute accessories.False Shut-downIntermittent shorting in wiring due to wear or insulation breakdowncheck all wiring, replace as necessary.Fault Sensitive circuit has intermittent open or short: check allwiring, replace as neededVibration causes the magnetic switch to trip: repair, replace orrelocate switch as neededSWICHGAGE closes but does not tripIncomplete circuit: locate open circuit and repair.the magnetic switch or kill the engine. Magneto not providing power to primary terminal post: repair magneto.C.D. type magnetic switch being used withmagneto or battery:replace with correct switch.SWICHGAGE closes and kills engine.Defective magnetic switch binds outside, prevents trip: adjust orbut does not trip the magnetic switchreplace the switch.Conventional magnetic switch is used with C.D. ignition: replacewith a C.D. designated switch.TATTLETALE tripped but engineLost ground to kill engine: repair.still running (mag. or C.D.).Pointer will not operate properly,Bulb not inserted to full length or low coolant level.inaccurate readings.Kinked/crimped/broken capillary.Pointer or contact burned in twoWithout exception this is caused by incorrect wiring or a shortcircuit: refer to wiring diagrams and recheck wiring:replace SWICHGAGEâ .If you need additional assistance, contact YOUR LOCAL MURPHY DEALER, or a Murphy representative at one of the offices listed onthis form.
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