Bedienungsanleitung Murphy Swichgage EG21

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00-02-0251
02-27-08
Section 70
EG21 and EGS21 Series Electric Gage and Swichgage ® Installation
for Pressure, Temperature, Fuel Level, Voltmeter and Ammeter
IMPORTANT NOTICE FOR ALL EG21 ELECTRIC GAGES AND EGS21 ELECTRIC
SWICHGAGES FOR 24VDC AND 32VDC APPLICATIONS
A change in the dial illumination circuit has made it necessary to change the external wiring harness.
If you use the incorrect wiring harness, irreparable damage will occur to the gage mechanism.
The table below lists correc

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Page 2 of 4. Sender Installation CAUTION: Do not use sender body to tighten. If sealant tape or pipe dope is used on the pressure sender, be sure that the tape or dope does not plug the sender’s orifice. CAUTION: Extreme caution must be used in handling or working on or around the fuel tank. It must be worked on only in a WELL VENTILATED area. Keep all flame and hot materials away from it. Do not smoke while working on or around the tank. Avoid sliding or dragging the

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Page 3 of 4. Basic Wiring WARNING: Disconnect battery negative cable before wiring or service. *Yellow wire is optional for gage illumination and does not need to be connected for gage to operate. Sender Wiring Swichgage Wiring WARNING: DISCONNECT BATTERY NEGATIVE CABLE BEFORE WIRING OR SERVICE. CAUTION: Connecting full Battery potential to the brown wire can damage the Swichgage. Shutdown circuit is rated for 300 mA continuous, 900 mA inrush. Circuit rounds out a

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Page 4 of 4. CAUTION: Devices containing solid state components can be damaged or caused to malfunction when used in systems which incorporate inductive loads (e.g. relays, solenoids, etc.) that can generate voltage spikes. To reduce the potential for this type of damage, install a flyback or clamping diode across all inductive loads (see wiring diagram below). Use Murphy diode package 65-00-0343 or equivalent. A typical diode is 1N4005 which is readily available from comm