Interrupted Sound Signal; Dead Start Of The Tractor - Zetor CRYSTAL HD 150 Operator's Manual

Interrupted sound signal

If the tractor speed is controlled by a partial pressing the clutch pedal at engine speeds above 1 200
rpm, an intermittent beep sounds and a warning on the instrument panel display is displayed. If this
occurs, immediately depress the clutch pedal fully or release the clutch pedal to the upper position
and wait until the acoustic signal ceases. Reduce the engine speed below 1 200 rpm, then continue
with the tractor operation.

Dead start of the tractor

Caution: If the air pressure in the tractor's air pressure system is less than 10 bar, the rear
wheels of the tractor are braked irrespective of the hand brake lever position and the tractor can not
be started until the air pressure in the tractor's air pressure system reaches at least 10 bar. When
attempting to start the tractor at low air pressure in the tractor's air pressure system, there is a risk
of damage to the clutch system.
If at dead start, engine revolutions are higher than 1400 rpm L gear of multiplier is automatically shifted, not
depending on the switch of multiplier pre-selection on dashboard being on or off. If the multiplier pre-
selection switch on the dashboard is on at dead start, L gear of multiplier is shifted automatically
independent on the number of engine revolutions at dead start (i.e. when the engine revolutions are lower
than 1400 rpm).
A very fast dead start can cause overloading of driving gear, increased fuel consumption,
excessive wear of tyres and damage to load. Use dead start on the 1
heavy trailer to the slope and in difficult terrain.
96
DRIVING OPERATION
PHS18N052
st
gear only when driving with