TeeJet TASC-6500 - Manual (Page 19)

999-1511 TASC 6200/6500
19 M-T 96162
5.0 MAINTENANCE
Maintenance is a matter of common sense. Here are a few tips.
5.1 TASC CONTROL CONSOLE
The TASC console requires no maintenance other than general cleanliness and auditing the constants
stored in memory. The console can be kept clean by wiping with a damp cloth. Unused connectors
should be covered with the dust covers provided. The constants can be monitored by checking each of
the calibration constants and each of the desired application rates.
TASC uses non-volatile memory to store constants. It is unlikely there will be a need to reenter con-
stants, however, there have been rare cases of constants being changed as a result of random electrical
interference. For this reason, MIDWEST TECHNOLOGIES strongly recommends keeping a written
record of the calibration constants. Check daily, before commencing applications.
5.2 GROUND SPEED SENSOR
5.2.1 WHEEL SENSOR:
Check the sensor daily for loose or bent fittings. Mud or trash can push the sensor out of alignment or
knock magnets off. Repair or replace any damaged parts immediately and calibrate the sensor.
5.2.2 RADAR SENSOR:
Check the sensor daily to make sure its face is clean and the mounting bracket and hardware is tight.
The sensor can be wiped clean with a damp cloth. If it is suspected that the radar sensor mounting
position has shifted, the mounting bracket must be tightened and the sensor must be calibrated.
5.3 FLOW METER
Prior to each day's application, inspect the flow meter to be sure there are no leaks around its fittings. At
the end of the day, take care to thoroughly flush the flow meter with clean water.
BE CAREFUL THAT WATER OR SEDIMENT IS NOT TRAPPED IN THE FLOW METER, PARTICU-
LARLY IN COLD WEATHER, AS DAMAGE TO THE MECHANISM WILL OCCUR.
The flow meters supplied by MIDWEST TECHNOLOGIES are inherently rugged but continued use will
eventually wear the internal bearings and shafts until the meter becomes inaccurate. Replacement kits
are available to repair the meters.
CAUTION: While inspecting and cleaning the radar
speed sensor, do not look directly into the face of the unit.
The radar generates a low level microwave signal which
could be dangerous to the eyes.