20
OPERATING INSTRUCTIONS
CHECKING INTERLOCK SWITCHES
The purpose of the interlock switches are to prevent
the engine from cranking or starting unless the traction
pedal is in NEUTRAL, to ensure cutting units
disengage when raised or when operator leaves the
seat. In addition, the engine will stop when the traction
pedal is depressed with operator off the seat.
THE INTERLOCK SWITCHES ARE FOR
THE PROTECTION OF THE OPERATOR
AND BYSTANDERS, AND TO ENSURE
CORRECT OPERATION OF THE MA
CHINE, SO DO NOT BYPASS OR DISCON
NECT THEM. CHECK OPERATION OF THE
SWITCHES DAILY TO ASSURE INTER
LOCK SYSTEM IS OPERATING. IF A
SWITCH IS DEFECTIVE, REPLACE IT BE
FORE OPERATING. THE CONTROLLER
HAS THE ABILITY TO DETECT BYPASSED
SWITCHES AND MAY PREVENT THE OP
ERATION OF THE MACHINE IF SWITCHES
ARE BYPASSED. DO NOT RELY ENTIRELY
ON SAFETY SWITCHES - USE COMMON
SENSE!
CAUTION
To verify interlock switch function:
1.
Park machine on a level surface, lower the cutting
units, stop the engine and engage the parking brake.
2.
Open control panel cover. Locate wire harness and
connectors near controller. Carefully unplug loop back
connector from harness connector (Fig. 27).
Figure 27
1. Wire Harness and Connectors
1
3.
Connect the Diagnostic ACE display connector
(Fig. 28) to the harness connector. Make sure correct
overlay decal is positioned on Diagnostic ACE display.
4.
Turn the key switch to the ON position, but do not
start machine.
Figure 28
1. Diagnostic ACE
Note:
The red text on the overlay decal refers to input
switches and the green text refers to outputs.
5.
The inputs displayed" LED, on lower right column
of the Diagnostic ACE, should be illuminated. If
outputs displayed" LED is illuminated, press the
toggle button, on Diagnostic ACE, to change LED to
inputs displayed".
6.
The Diagnostic ACE will illuminate the LED
associated with each of the inputs when that input
switch is closed.
Individually, change each of the switches from open to
closed (i.e., sit on seat, engage traction pedal, etc.),
and note that the appropriate LED on Diagnostic ACE
will blink on and off when corresponding switch is
closed and opened. Repeat on each switch that it is
possible to be changed by hand.
7.
If switch is closed and appropriate LED does not
blink on and off, check all wiring and connections to
switch and/or check switches with an ohm meter.
Replace any defective switches and repair any
defective wiring.
Now start engine and raise and lower each cutting unit.
Note the appropriate LED on the Diagnostic ACE (i.e.
LED is illuminated when cutting unit is lowered and
LED is not illuminated when cutting unit is raised.
The Diagnostic ACE also has the ability to detect which
output solenoids or relays are turned on. This is a quick
way to determine if a machine malfunction is electrical
or hydraulic.
To verify output function:
1.
Park machine on a level surface, lower the cutting
units, stop the engine and engage the parking brake.
2.
Open control panel cover. Locate wire harness and
connectors near controller. Carefully unplug loopback
connector from harness connector.
