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To Deactivate Lock Device
1. Disengage other provided holding devices.
2. Switch the user interface to "release" position. The
"locked" indicator lamp will deactivate and the power
unit will return brake system to static system pressure.
3. Release mechanical parking brake.
Using 691 as an Interlock
To Activate
1. Bring vehicle to a complete stop.
2. Set mechanical parking brake.
3. Satisfy the conditions that activate remote input.
To Deactivate
1. Disengage other provided holding devices.
2. Deactivate remote input.
3. Release mechanical holding devices.
NOTE
The 691 Interlock can be activated by the rocker
switch (if applicable) whether the vehicle’s ignition is
on or off as long as the battery connection exists.
NOTE
To release the brakes in case of an electrical failure
complete the following steps:
A. Remove 691 System fuse.
B. Apply other provided holding devices and
mechanical parking brake to keep the vehicle
from rolling.
C. Release residual pressure from 691 System by
carefully loosening bleeder screw nearest the
power unit inlet port of 691 Actuator. Be careful
when opening the bleeder screw, it may be under
high pressure.
D. Disengage other provided holding devices.
E. Release mechanical parking brake.