User's Manual

Transmitter
26 Vermeer
®
DigiTrak
®
L
T
™
Operator’s Manual
The transmitter also has a temperature overheat indicator (temp dot) that has an outer yellow ring with a
1/8-inch (3-mm) white dot in the center. This temp dot is located on the stainless-steel front end cap. The
temp dot should be white if the transmitter has not been exposed to excessive heat. If the temp dot is
silver or gray, it indicates the transmitter has been exposed to heat but not in excess of the specifications.
A black temp dot indicates the transmitter has been exposed to temperatures in excess of 180°F (82°C).
The transmitter will shut off at about 176°F (80°C). Drilling should be suspended when temperatures
reach 95°F (35°C) to permit cooling.
Front End Cap of Transmitter Showing Temp Dot, Index Slot, and Black Temp Dot
If the temp dot is black, the transmitter should be considered unreliable. If the transmitter overheats, it
may appear to operate normally; however, exposure to excessive temperatures greatly increases the
likelihood of inaccurate information and will contribute to premature failure of the transmitter. The DCI
warranty does not apply to any transmitter that has been overheated or that has had the temp dot
removed.
Avoid transmitter overheating by practicing proper drilling techniques. Abrasive soils, clogged jets,
inadequate mud flow, and poorly mixed mud are some of the factors that can contribute significantly to
the risk of an overheated transmitter.
Sleep Mode (Automatic Shutoff)
LT transmitters will shut down (go into “sleep” mode) to conserve battery power if they are stationary for
15 minutes. To “wake up” a transmitter, simply rotate the drill string.
General Transmitter Care Instructions
¾ Clean the springs in the battery compartment and the threads of the battery cap and O-ring.
Emery cloth can also be used to remove any oxidation buildup.
¾ Verify that the transmitter fits snugly in the housing. It may be necessary to wrap the transmitter
with tape or O-rings.
¾ Send in the Product Registration card for the 90-day limited warranty.
Temp Dot
Index Slot at
6 o’clock Position
Black
Temp Dot
(Overheated)