Muirhead 3565 - Coolant Temperature Switch - Function 3; Oil;Fuel Level Switch - Function 4

M0160.docx | Rev 1.3 | Last modified 19/05/2020 | © Remote Control Technologies Pty Ltd
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Coolant Temperature Switch – Function 3
The coolant temperature switch should be installed on the engine side of the thermostat control. It is imperative
that the switch sensing area (bulb) be immersed in coolant. Install the switch using thread sealant.
Note
Care should be taken when selecting a mounting port to allow sufficient depth for the bulb.
Part No. 1764
212°F / 100°C
Normally Closed
Thread: 3/8 NPT
Part No. 1765
220 °F / 104 °C
Normally Closed
Thread: 3/8 NPT
Part No. 1766
230 °F / 110 °C
Normally Closed
Thread: 3/8 NPT
Part No. 8491
Heavy Duty Temp
Switch
225 °F / 107 °C
Normally Closed
Thread: 3/8 UNO
Oil/Fuel Level Switch – Function 4
The oil/fuel level switch is a capacitive type switch with a ¼ NPT mounting thread and used to monitor levels
in tanks and reservoirs. The switch should be installed at the low level mark which is specified by the OEM.
Ensure there is sufficient clearance within the tank so as not to interfere with the switch installation. Install
switch using thread sealant.
Note: Care should be taken when selecting a mounting position as the maximum allowable ambient
temperature for the switch is 100 °C. Also note that the oil/fuel level switch incorporates a three-second alarm
delay.
Part No. 3072
Normally Open
Thread: 1/4 NPT brass
Tapping drill: 7/16”