TM 10-4510-209-13&P
0059 00
Test the Bag Heater Assembly
WARNING
Do not handle the bag heater assembly while it's connected to a receptacle. Ensure it
has been disconnected from receptacle and allowed to cool for at least 15 minutes before
handling, failure to do so may cause serious burn injury to personnel.
NOTE
The heater is fitted with an integral thermostat that activates the heat trace element at
approximately 45oF (7.2oC). The heater temperature must be well below the activation
temperature before any test is performed.
1. Unplug the bag heater plug (1).
the two flat prongs (2) of the plug (1). There should be continuity between the two flat prongs.
Replace a bag heater (3) with an open element. Refer to WP 0011 00 for installation procedures.
the each of the flat prongs (2) and the U-shaped ground prong (4). There should be no continuity
between the each flat prongs and the U-shaped ground prong. Replace a bag heater (3) with a
shorted element. Refer to WP 0011 00 for installation procedures.
4. If facilities are available to provide an ambient temperature greater than 60oF (15.5oC), allow the heat
trace to warm, then use an ohmmeter or multimeter set to read ohms to check for continuity
between the two flat prongs at temperatures greater than 60oF (15.5oC). Replace a bag heater (3)
with a shorted thermostat. Refer to WP 0011 00 for installation procedures.
4
2
3
1
END OF WORK PACKAGE
0059 00-5/(6 Blank)