Murphy SWICHGAGE MDTM89 Series Installation Instructions Manual
Dual-temperature monitor
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Summary of Contents for Murphy SWICHGAGE MDTM89 Series
- Page 1 Model Series MDTM89, ® Dual Temperature SWICHGAGE Installation Instructions †When used with approved ignitions or 12-24 VDC. ††Approved for CD ignition, 80-250 VDC 00-02-0165 Revised 08-25-10 Section 10...
- Page 2 • Disconnect all electrical power to the machine. • Make sure machine cannot operate during installation. • Follow all safety warnings of the machine manufacturer. • Read and follow all installation instructions. • Please contact FW MURPHY immediately if you have any questions.
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Page 3: Table Of Contents
Table of Contents General Information ............1 Description .......................... - Page 4 (THIS PAGE INTENTIONALLY LEFT BLANK)
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Page 5: General Information
General Information Description Murphy's model MDTM89 is an electronic, dual-temperature monitor. It monitors two thermocouples, displays the temperature of the thermocouple selected, and has adjustable trip points for each input. A toggle switch provides for selection of the thermocouple to be displayed and/or the temperature trip point to be checked/adjusted. If either trip point is reached, the associated output “turns on”... -
Page 6: Wiring And Adjustment Information
Wiring and Adjustment Information CAUTION: Perform the wiring operation with the power source “OFF”. Make sure the voltage and current requirements are within the SWICHGAGE® rat- ings. Keep all high voltage wiring, such as spark plug wires away from THER- MOCOUPLES AND EXTENSION WIRING. -
Page 7: Operation Test
Installation Information—continued B. Connecting Thermocouple Wires (ungrounded thermocouple) 1. Remove factory installed jumpers or shunts from TC1 and TC2 terminals before connecting thermocou- ple(s). 2. Connect the thermocouple leads to the thermocouples. Observe lead polarity. See Table 1 for thermocou- ple extension lead color code and thermocouple polarity. -
Page 8: Trip Point Adjustment Information
Trip Point Adjustment Information Trip Point Adjustments 1. Power up the temperature monitor by turning on power or by starting engine. 2. Set the display selector switch to the TC1 position. 3. Depress the “Push to Read” trip point push button to read trip point. -
Page 9: Specifications
Thermocouple Lead Length: 150 ohm lead resistance affects monitor accuracy less than 1°. Trip Point Accuracy: ±3°F (±2°C) of reading. Trip Point Adjustment Range: 0-1999 Degrees. 1 When used with approved ignitions or 12-24 VDC. Contact Murphy for details. 2 Approved for CD ignition, 80–250 VDC. Section 10...
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