Hillco 3700S, Руководство оператора, Страница: 21 / 40

21
ELECTRICAL SETTINGS
LIMIT SWITCHES AND MAXIMUM LEVEL LAMP
The leveling system is equipped with left and right level limit switches that disable the
automatic/manual leveling when the combine reaches its maximum leveling capability in
either direction. These switches are preset by the installer at either the maximum leveling
capability of the combine or in some cases at a lesser angle to provide for proper tire
clearance. It is important to note that in the event of a limit switch failure the combine may
continue to level to its maximum capability. Care should be taken to make sure tire
clearances are adequate in the maximum level position to prevent damage to the tire or
chassis in the event that a limit switch failure should occur. The limit switches also actuate
the maximum level lamp that indicates to the operator when the combine has reached its
maximum leveling capability. With the bulk tank empty, the operator should daily level the
combine to its maximum level position, using the manual leveling switch to insure the limit
switches and maximum level lamp are operational. The maximum level lamp will only light
when the manual switch is held into the left or right leveling position or the system is in the
automatic mode when the combine reaches maximum level.
IMPORTANT: With certain tire selections the limit switches can be used to prevent
the need to modify the sheet metal on the left and right side panels of
the combine. Installation of level limit stops is recommended to
prevent sheet metal damage in the event of a limit switch failure. (See
LEVEL LIMIT STOPS on Next Page)
HOW TO SET LIMIT SWITCHES
To set the limit switches, park the combine on level ground and set the parking brake.
Then raise the feeder spout and drop the header lift cylinder safety stop. Place the
auto/manual-leveling switch in the manual position. Lean the combine to the left until either
the maximum leveling capabilities of the leveling system are reached or there is
approximately one inch of clearance between the tires and any metal that may interfere
with them. Next, shut off the machine. The limit switches are located on each side of the
gray controller box near the main pivot pin. Loosen the bolts that hold the left limit switch in
place. Adjust the left limit switch to the point where you can hear the contacts on the limit
switch snap and then set there. Next, loosen the nuts on the elevator bolt and adjust the
elevator bolt up another ½ of a turn and retighten the nuts. Repeat this process for the
right limit switch.
If Level Limit Stops are used be sure that the limit switches are set to stop
leveling before the level limit stops make contact. Damage to the cylinders or
other leveling system components may occur if limit switches aren’t set
properly.