Phillips & Temro 2021 Product & Application Guide
Avoid Common Engine Heater Installation Mistakes: TECHNICAL INFORMATION HEATERS A 50/50 mixture is recommended. Using a mixture that is richer than 65% will cause the element to fail prematurely. Do not run your engine while the engine heater is plugged in. This will create an air bubble around the element which will then cause the element to burn out prematurely. Do not plug in your engine heater prior to installing to ”see if it works”. Without being submerged in liquid, the heat generated has nowhere to go and could result in serious burns. How to safely test a heater. Connect a multi-meter to the heater pins. A reading between 5 ohms and 100 ohms indicates that the heater is working correctly. Do not use an engine heater when using 100% antifreeze.
Do not use petroleum based lubricants on the O-ring. A petroleum based lubricant will significantly reduce the life of the O-ring. Use antifreeze instead. Do not over tighten the heater. The O-ring will form an adequate seal when the heater is torqued to the specifications in the instructions. Over tightening will strip the screw threads and reduce the quality of the seal. After heater use, disconnect the extension cord from the heater cord by firmly grasping each plug and pulling in opposite directions. Only grasp the plugs. Do not grasp, pull, yank or snap the cords to disconnect power. Damage will result to the power cord connections which could result in permanent malfunction and even an electrical short.
DETERMINING CURRENT USAGE
The current usage of a heater can be determined based on a heaters volt and wattage rating.
Amperes @ 120 Volts
Amperes @ 240 Volts
Cost per hour *
450 500 750 850
3.75 4.17 6.25 7.08 8.33
1.88 2.08 3.12 3.54 4.16 6.25 8.34
.045 .050 .075 .085 .100 .150 .200 .250
1000 1500 2000 2500
12.50 16.67 20.83
*Based on 10� per KWH
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