Manual

Carlin U – Residential Oil Burners – Page 75
Carlin U – Residential Oil Burners – Page 75
Field testing
Nozzle line heaters
• You can check the
integrity of a nozzle
line heater using your
Carlin multimeter.
• Disconnect power to
the burner and appli-
ance. Make sure the
burner and all internal
parts are cool to the
touch.
• Separate the nozzle line
heater at its disconnet.
• Insert the probes of
your multimeter into
the nozzle line heater
connector sockets.
• Set the meter for ohms
and read the resistance.
• The heater is accept-
able if the resistance is
between 600 ohms and
1,500 ohms.
• Replace the heater if
the resistance is less
than 600 ohms or more
than 1,500 ohms.
Nozzle line heater
Advantages
• Start-ups are cleaner
with heated oil.
• Heating the oil re-
duces viscosity.