ITR Hurricane Zephyr HW, Инструкция по установке и эксплуатации

Страница: 72 / 89

Section 10. Troubleshooting
International Thermal Research
10-7
The single most common reason for flame out faults is when air
enters the fuel system. This is normally caused by low fuel levels
or loose fittings. As air accumulates and passes through the
nozzle, it interrupts the fuel supply and shuts down the burner.
When this happens, it may be necessary to reset the fault a few
times to ensure all air has passed through the system. The Zephyr
is equipped with a fuel manifold that helps to eliminate air in the
supply line by allowing it to pass into the return line. Air may still,
however, enter the nozzle and interrupt the fuel supply to the
burner. If air continues to disrupt the flow of fuel into the nozzle it
is likely there is a leak somewhere in the fuel system.
A flame-out may also be caused by a dirty nozzle or a dirty filter.
When diagnosing a flame-out also check the condition of the
nozzle and clean it or replace it if necessary. Also, check the
condition of the nozzle o-ring and nozzle filter (see section 10.3).
If the external fuel filter is dirty, it could create restriction in the
fuel line and cause flame faults. Inspect and replace as necessary.
A flame fault can also be caused by starvation of fuel if the
heater’s fuel supply is shared with other equipment.
· Check the connections on the fuel tank, fuel pump, and the
regulator. Check all of the fuel lines for holes or cracks. Make
sure the nozzle or fuel filters are not clogged or excessively
dirty.
· Check the airline hoses for any restriction of airflow through
the compressor. Restrictions may be caused by a crimped
hose, clogged air filter, or a loose or leaking air hose from the
compressor outlet to the nozzle. Check the air filter inlet for
any obstructions.
· Check for negative pressure in the area around the heater.
When the engine is running, it can draw air back through the
heater’s exhaust pipe. All intake air and exhaust connections
must be tight.
· Check for restrictions or leaks in the combustion air in-take
hose or exhaust pipe.
· Check for open circuit on fuel pump/solenoid and compressor.
To restart the burner, check the fuel supply and clean the
nozzle. Then reset the fault by switching the service switch or
the remote switch OFF then ON again.