2018 HONDA CLARITY FUEL CELL Owner's Manual (in English)

15
Quick Reference Guide
High Voltage Components, High Voltage Cables and High Temperature
Components
Fuel cell vehicles have high voltage components (about 500 V maximum) such as the FC stack, FCVCU, High Voltage battery, power control
unit, high voltage cables (identified by their orange covers), el ectric motor, and high temperature parts such as the radiator. Labels with
handling warnings are attached to these components.
WARNING
This vehicle has high voltage circuits and
parts. Failure to observe the following
precautions can result in burns or electric
shock.
●Do not remove, disassemble, or replace
the high voltage parts, cables (orange) or
their connectors.
●Never touch the High Voltage battery
service plugs.
In an emergency or during maintenance or
repair, the service plugs are removed to cut
off the electric flow from the battery. These
plugs are in contact with the battery and
can cause severe electric shock if not
handled properly.
Only a qualified technician should handle
any electrical equipment. For inspection
and repair, consult an authorized Honda
Clarity Fuel Cell dealer.
12V DC/DC Converter
●A/C Compressor●A/C Heater
Radiator a Air Pump FC Stack b Air Pump Power Control Unit High Voltage Battery
●Electric Motor●Power Control Unit
Labela Radiator Cap b FCVCU and FC Stack
FCVCU b
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Quick Reference Guide
High Voltage Battery
Because electricity generated by the fuel cells and through regenerative braking recharges the High Voltage battery, the batter y does not
need to be recharged from an outside source; however, the High Voltage battery gradually discharges when the vehicle is not in use. If
allowed to discharge too much, the battery may become damaged.
If your vehicle is parked for an extended period of time, du ring storage for example, periodically recharge the battery to main tain sufficient
charge levels. At least once every three months, turn on the power system, and keep it on for more than 30 minutes to allow the battery to
recharge.
Excessive heat can also damage the batter y. On hot, sunny days, try to avoid parking your vehicle under direct sunlight.
If the High Voltage battery becomes fully discharged or damage d and you are unable to start the FC system as a result, consult an
authorized Honda Clarity Fuel Cell dealer.
Temperature
When storing the vehicle, make sure not to expose it to extrem ely low temperatures: If the temperature of the fuel cell drops b elow –4°F
(–20°C), the power system may not start. If the temperature drops to below –22°F (–30°C), the fuel cells or the High Voltage battery will not
operate and, as a result, the vehicle will not start.
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17
Quick Reference Guide
Hydrogen Leak Detection System
When the power mode is turned to ON, the hydrogen leak detection system is activated. If a
hydrogen gas leak is detected by the hydrogen detector, the hydrogen leak indicator will
come on.
2 Hydrogen Leak Indicator (P90)
Hydrogen Supply/High Voltage Shut-off System
If the FC system is on and the vehicle is involv ed in a crash, depending on the severity of the
impact, the shut-off system will cut off the supply of hydrogen and electricity. In this case, it
is not possible to restart the vehicle.
To restart the FC system, consult an authorized Honda Clarity Fuel Cell dealer.
WARNING
Do not block the hydrogen ventilation
ducts.
The hydrogen tanks, FC stack, and
hydrogen supply components have
ventilation ducts to allow any leaked
hydrogen to escape into the atmosphere. If
the opening of a duct is blocked with snow,
leaves, etc., and a hydrogen leak occurs, the
leaked gas can make its way into the motor
room, where it can ignite, resulting in a fire
or explosion.
Make sure the ducts are free of any
obstructions before activating the power
system.
Do not remove or disassemble a hydrogen
duct: Doing so can lead to a fire or
explosion if a hydrogen gas leak occurs.
Hydrogen
Ventilation Duct
(Above the both
front tires) Hydrogen
Ventilation Duct
(Inside the fuel
lid)
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18
Quick Reference Guide
Hydrogen Gas Leak
If a hydrogen gas leak is suspected, follow the recommended actions listed in the
instructions of this owner’s manual. 2 If Hydrogen Gas is Leaking (P511)
WARNING
Since hydrogen gas is highly flammable, a
hydrogen gas leak is extremely dangerous
as the leaked gas, which is dispersed into
the atmosphere, can ignite, resulting in a
fire in which you or someone else can be
serious injured or killed. Keep flammable
materials and liquids away from the vehicle
at all times, especially if a hydrogen gas
leak is detected.
In the case of a hydrogen gas leak, a buzzer
will sound and the hydrogen gas leak
indicator will come on. If you are driving
the vehicle, stop in a safe, well-ventilated
place. Then turn the power mode to OFF
and contact an authorized Honda Clarity
Fuel Cell dealer at once. You should also
display signs warning of the danger and be
aware of and keep away anything that
could ignite the gas.
The system is designed so that in the event
that the vehicle catches fire, the gas inside
the tanks will be released through the tank
valves, thereby ensuring that pressure (due
to heat from the fire) within the tanks does
not build up.
This gas is released toward the rear of the
vehicle in a downward direction. Do not
attempt to extinguish the fire from behind
the vehicle as the exiting gas may ignite
into a flame.
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19
Quick Reference Guide
Fuel Cell Insulating Fluid
Fuel cell insulating fluid (FC insulating fluid) uses a specifically designed fluid with high electrical insulation properties in order to safely cool
the fuel cell.
Never add water, other commercial coolants, or genuine Honda inverter coolant to the cooling system. Doing so will cause damage to the
fuel cell.
Consult an authorized Honda Clarity Fuel Cell dealer to replenish or change the fuel cell insulating fluid.
FC Insulating Fluid Reserve Tank
Inverter Coolant Reserve Tank
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20
Quick Reference Guide
Ion Exchanger
An ion exchanger is installed in the fluid lines for the fuel cell in order to maintain the
insulation properties of the fuel cell insulating fluid (FC insulating fluid).
If the message Service Due Soon A appears on the driver information interface, ion
exchange filter replacement is necessary. Be sure to consult an authorized Honda Clarity
Fuel Cell dealer. 2 Indicators (P89)
Exhaust Pipe
Water is expelled from the tail pipe while the vehicle is running or while the High Voltage
battery is being charged. This also happens af ter the vehicle has been running or when you
shut down the FC system by setting the power mode to OFF. If you stand to the left rear of
the vehicle, you may be sprayed by this waste water.
Never drink water expelled from the pipe. Though this water is harmless, it is not suitable
for drinking.
While the vehicle is parked during cold temperatures, the FC system may automatically turn
on and discharge water from the ex haust pipe. If this water is discharged as a vapor, it may
appear as a white mist. This, however, is not indicative of a problem.
Do not obstruct or block the exhaust pi pe as the FC system may stop working.
Maintenance, Repair, and Disposal
Always consult an authorized Honda Clarity Fuel Cell dealer regarding maintenance, repair,
and disposal.
Fuel cells and High Voltage batteries that have been removed from disposed vehicles are
collected through authorized Honda Clarity Fuel Cell dealers. Do not dispose of those
batteries yourself.
WARNING
Do not directly touch any water emissions
from the exhaust pipe.
Water created during FC power generation
is discharged from the exhaust pipe in the
form of either liquid (water) or gas (steam).
Directly touching this water may cause
burns.
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21
Quick Reference Guide
In Case of a Crash
●If a vehicle fire occurs, leaked hydrogen gas may ignite. Stay far away from the vehicle
and call the local fire department.
To extinguish a vehicle fire, use a large amount of water, dry chemical fire extinguisher
(Class A, B, or C), or carbon dioxide fire extinguisher. With an inadequate amount of
water, a fire cannot be put out completely. Never attempt to extinguish a vehicle fire
with a small amount of water.
● If your vehicle needs to be towed, make sure it is done with all the wheels lifted using the
flat bed equipment. If the front wheels are touching the ground, the rotating tires will
force the electric motor to spin, which in turn, may damage the power system,
transmission, etc.
WARNING
If the body of the vehicle is seriously
damaged or deformed in a crash, hydrogen
gas may leak out from the vehicle. Keep
flammable sources, such as a lit cigarette or
warning flares, away from the vehicle. 2If Hydrogen Gas is Leaking (P511)
Also, high voltage parts and/or the cables
(orange) connecting them may be exposed
as a result of a crash. Stay clear of these
parts as you may be electrocuted.
If the vehicle catches fire, leaked hydrogen
gas may ignite. Stay far away from the
vehicle and report to the fire department
that a vehicle containing hydrogen tanks is
on fire.
The system is designed so that in the event
that the vehicle catches fire, the gas inside
the tanks will be released through the tank
valves, thereby ensuring that pressure
within the tanks does not build up. This gas
is released toward the rear of the vehicle in
a downward direction. Do not attempt to
extinguish the fire from behind the vehicle
as the exiting gas may ignite into a flame.
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22
Quick Reference Guide
WARNING
If a High Voltage battery fluid leaks, be
careful not to touch the fluid. It can harm
your eyes and skin. If it comes in contact
with your eyes and skin; flush the affected
area with clean water immediately for a
few minutes, and seek immediate medical
attention.
Do not use a warning flare near a fuel cell
vehicle. If hydrogen gas is leaking, it may
ignite the gas, and result in a vehicle fire.
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