User's Manual

Transmitter
DigiTrak
®
F5™ Operator’s Manual 41
Transmitter Overheat Indicator (Temp Dot)
The transmitter has a temperature overheat indicator (temp dot) on the front end cap. The temp dot has
an outer yellow ring with a 1/8-inch (3-mm) white dot in the center. The white dot will change color if the
transmitter is exposed to excessive heat.
Front End Cap of Transmitter Showing Temp Dot, Index Slot, and Black Temp Dot
If the temp dot changes to silver or gray, then the transmitter has been exposed to heat but not in excess
of the specifications. If the temp dot is black, then the transmitter has been exposed to temperatures in
excess of 220°F (104°C) for long-range and extended long-range transmitters and 180°F (82°C) for an FS
or FC transmitter and can no longer be used. The DCI warranty will be void for any transmitter that has
been overheated (black dot) or had its temp dot removed.
Avoid transmitter overheating by practicing proper drilling techniques. Abrasive soils, clogged jets, in-
adequate mud flow, and poorly mixed mud are some of the factors that can contribute significantly to the
overheating of a transmitter.
Temp dot
I
ndex slot at
6 o’clock position
Black temp
dot voids
warranty