Mack LEU, Руководство оператора

Страница: 21 / 59

INSTRUMENTS AND CONTROLS 17
1 Power On Indicator (Green) — This green LED should always be on. No power
on/off switch is provided for this unit as it should be on at all times.
Note:
When the battery is disconnected, the methane detector/alarm system will
not operate so the green light will not be on. The methane detector/alarm system is
powered by the battery and is active at all times unless the battery is disconnected
or the fuse is blown. Hand-held methane detector/alarm devices should be used
when working on natural gas vehicles with a non-functioning or disconnected
methane detector/alarm system and where no auxiliary methane dector/alarm
system is installed.
DANGER
WHEN APPROACHING THE CAB TO ENTER:
Do not open the vehicle doors if the RED LAMP IS ON! Do not open the
vehicle doors if the ALARM IS SOUNDING! Do not open the vehicle doors if
the GREEN LAMP is NOT ON!
If the indicator lamp is RED, if the alarm is sounding or if the green lamp is
NOT ON , it is unsafe to open the vehicle doors because even static electricity
can ignite concentrated methane fumes in an enclosed area. Immediately
implement the following procedure:*
Remove all personnel from the area.
Turn off electrical circuits and sources of ignition in the immediate area.
Manually turn off the Fuel Shut- Off Valve on each fuel tank to prevent further
gas leakage . Wait until the gas has dissipated and the alarm situation has
cleared. It is now safe to open the vehicle doors and windows to vent the vehicle.
Do not operate the vehicle until the source of the leak has been repaired.
* Depending on local ordinances or company policy, it may be recommended that
emergency personnel be contacted to implement these procedures
DANGER
the event of an alarm while operating the vehicle, immediately open the cab
windows, safely stop the vehicle, shut down the engine and turn off the ignition.
Exit the cab and leave the doors and windows open to vent the vehicle. Manually
turn off the Fuel Shut-Off Valve on each fuel tank to prevent further gas leakage.
Wait until the gas has dissipated and the alarm situation has cleared. Do not
operate the vehicle until the source of the leak has been repaired.
2 Significant Sensor Alarm Indicators (Red) — Illumination of the red LED
for "Zone 1" (cab compartment) or "Zone 2" (engine compartment) indicates
the system has detected gas fumes in concentrations above 50% of the Lower
Explosive Limit (LEL) and an audible horn will sound.