Daimler SEATTLE 1343B, Руководство оператора

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Air Brake System Operation
Page 34
Brake Interlock
The brake interlock is used in
conjunction with rear door, kneeling,
and wheelchair ramp operations.
When these systems are enabled or
active, partial air pressure is applied
to the rear service brakes. Brakes
are designed to remain applied as
long as these systems are
functioning and enabled.
The BRAKE ON indicator
illuminates when the interlocks are
activated. Brakes are released
when the doors are closed and the
door control button is placed in the
door close position.
A firm brake application is
necessary to release the interlock.
Remove the vehicle from service
and report a LOW AIR PRESS fault
to dispatch.
Rear Axle Brakes Safety
Circuit
The rear axle brakes contribute to
most of the braking effort required to
stop a loaded vehicle.
Air loss is indicated by the pressure
gauge located on the front
instrument panel. An audible alarm
will sound if the pressure drops
below 70 psi.
When this circuit is activated, safely
stop the vehicle and report the loss
of air to dispatch. The vehicle
should not be used for transit
operation until the air loss is
corrected.
In a situation where air leakage
occurs, the spring brakes apply
automatically when the system air
pressure drops below 70 psi.
The brakes apply in stages, and will
be fully applied if the pressure
continues to fall below 40 psi.
CAUTION !
The vehicle air pressure must be
above 70 psi in order for the
system to function properly.
Failure to maintain a pressure of
70 psi will jeopardize braking
efficiency.
NOTE
A "creep forward" mode is
present in all EPA10 hybrid
vehicles; as a result, the vehicle
will creep forward when the gear
range selector is in the D (drive)
position and the brake pedal is
released.
CAUTION !
The LOW AIR PRESS warning
indicator illuminates and the
alarm will sound if vehicle air
pressure is below 70 psi. Failure
to maintain a pressure above
70 psi will jeopardize braking
efficiency.