Safety 31
Safety Interlock Tests
Your WITTKE RETRO FL
TM
is equipped with a number of safety interlock functions that are
programmed into the electronic control unit (ECU). Testing of all interlock functions should
become an integral part of your daily inspection as an operator.
IMPORTANT: If any of these test fail, do not operate your vehicle until it has been repaired.
NOTE: Your WITTKE RETRO FL
TM
may be equipped with some interlock functions not mentioned
here. Consult your supervisor for detailed information on these optional lockouts.
Test: Pump Lockout by Access Door Not Closed
The hopper access door triggers a proximity switch whenever the door is closed. The hydraulic pump
bypasses to the reservoir whenever the proximity switch is not triggered (that is when the door is
open), preventing operation of any of the hydraulic controls.
NOTE: Do not enter the body while the vehicle is running; injury or death may occur. Refer to
“Lockout/Tagout Procedure” on page 37.
For this test, proceed as follows:
1. With the hydraulic pump ‘on’, open the hopper access door.
2. The red illuminated ‘danger’ warning lamp, along with the audible buzzer, should be activated on
the control console.
3. The MDM control screen should read “ACCESS DOOR OPEN”.
4. Verify that all hydraulic functions have been rendered inoperative by activating one of the
functions, such as the forks.
5. If hydraulic functions are still active, refer to “Adjusting Side Access Door Proximity Switch” on
page 77.
Test: Auto Pack and Eject Functions Locked Out by Top Door Not
Fully Open
The top door triggers a proximity switch whenever it is fully open. This proximity switch, when
triggered, allows the ‘Auto Pack’ and ‘Eject’ functions. This feature is included to prevent packing or
ejecting against the top door, which may cause damage to the top door.
For this test, proceed as follows:
1. With the packing panel fully forward to its home position, activate the top door function to
partially close it.
2. Activate ‘Auto Pack’. The packing panel should not move.
3. Open the tailgate completely.
4. Activate Pack Panel ‘Eject’. Again, the packing panel should not move.
To Next Page
Loading...
Need help?
General
