TYPICAL INSTALLATIONSWICHGAGEâ INSTALLATION(Refer to drawing)1. Secure the SWICHGAGE' in the panel, using the clamp andnuts provided.NOTE: Be sure the SWICHGAGEâ andpanel are grounded.2. Connect the pressure or vacuum line, using a 1/8 NPTadaptor at the SWICHGAGEâ end.NOTE: Be sure that pressure line is cleanand that pipe dope or teflon used onfittings does not block the line.3. If not in a prewired panel, wire the limit switchless) to aMurphy magnetic switch or relay.NOTE: Pilot duty (2 A @ 30 V resistive)contacts must be protected from highcurrent: disconnect power during wire-up.TEST: Start equipment: wait for pointer to lift off low contact:check readings, close limit switch(es) to alarm/shutdown;adjust limit contact to correct limit point.USE THE PROPER TOOLS - DO NOT OVERTIGHTENMurphy recommends mounting SWICHGAGE, and magneticswitches away from excessive vibrations and the use of panelshock mounts wherever vibration may occur. Handle allinstruments with care: although durable, these products shouldnot be subjected to rough handling, dropping, or severevibrations.Magnetic Switches: Mount with electrical lugs down. Ifnecessary, drill the TATTLETALEâ and pilot-stud holes(template provided); clean away burrs and filings. Position themagnetic switch in the panel, making sure the pilot stud is inplace. Add TATTLETALEâ decal, then washer, then nut andtighten.BASIC WIRING OF SWICHGAGEâ AND MAGNETICSWITCHDisconnect battery or other power during installation.Murphy components are easily wired-up and maintained.Use good quality wire and terminals. Be sure all connectionsare Clean, Complete and Correct. The wiring and the type ofmagnetic switch differ for various applications, but a knowledgeof basic electrical functions and of the circuits necessary forthe specific job (what you want to happen), and common sensewill make the system work the way you want It to workSee examples of typical wiring and instructions packed witheach magnetic switch.IMPORTANT, PLEASE READ COMPLETELYSWICHGAGE, Murphy magnetic switches and valves,properly installed and maintained, are effective, work-readytools in any preventive maintenance program. For optimumperformance, check these tools periodically: look for frozenpointers, kinked or worn tubing, broken wiring or looseconnections: close the contacts, then watch for expectedresults. Replace any damaged or worn parts: clean and repairas necessary. Murphy will repair or replace parts covered bythe Murphy two year limited warranty.Check the wiring; it must be Correct and Complete: tightconnections, unbroken insulation, no accidental grounds,do not run shut-down wires with ignition wiring.Check all tubing and connections for leaks.Mount magnetic switches and Murphy valves in an uprightposition, to prevent moisture collection and shorting.CleaningLexanLenses: since many strong solvents andcleaners can haze and permanently damage the clear poly-carbonate lens on SWICHGAGE, please use one of thesolutions listed here: mildsoapandwater; mineral spirits;white kerosene; VM&P naphtha; heptane; hexane; varsol No.2; menthyl/isopropyl/isobutyl alcohols: 1 & 3 denaturedalcohols; freons TF & TE; petroleum ether (65C boiling pt.).CAUTION: Many of these cleaners areflammable. DO NOT USE when theequipment is running or very hot. Keepaway from sparks and flame.
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