15
with the Radio Control Set.
GAS SYSTEM
Leek & Manifold
locomotives are fitted with our 'FG' type gas burner,
which is set up and fully tested at the factory.
This system is designed for use with Butane or Iso-Butane gas. Mixed
gasses, i.e. Butane with a proportion of Propane mixed in, are
available, and may be used if straight Butane is unavailable. These
come in a variety of mixes ranging from 90/10 to 60/40 with one of
the most common being 70/30. The figures refer to the proportions of
the mix i.e. 70/30 contains 70% butane and 30% propane. If using
mixed gasses, always choose the one with the largest proportion of
butane. The addition of propane slightly alters the gasses properties.
This can make the burner a little more difficult to light when cold or
after filling the gas tank. Always open the regulator very slowly when
lighting, and only just sufficient for ignition to take place. Opening too
much too soon may extinguish the flame until the burner reaches
normal operating temperature.
The tiny jet in these units can
become blocked by small particles of
dirt making the burner difficult to light, burn weakly at normal
operating temperatures*, burn in the smokebox or fail completely. If
any of these should happen, clean out the jet as follows.(* On very
cold days, a burner may start off burning weakly due to the
temperature of the gas but should increase to its normal level as the
engine warms up. This is quite normal). Carefully, disconnect the gas
pipe from the gas jet holder using a 2BA spanner.
Note
when connecting or disconnecting the gas pipe and jet block, do
not use excessive force. Always hold the end of the gas burner near
the air holes to support it otherwise it is possible to cause damage by
bending the body.
Slacken the screw retaining the gas jet holder and slide it out to the
rear. Remove the jet from the gas jet holder using a 4BA spanner.
Wash out the jet in fast evaporating thinner (Cellulose or similar).
Blow through the jet from the front, which should clear most
blockages. Although the hole through the jet is tiny, if you hold it up
to the light you should be able to see quite clearly if it is blocked or
not. If in doubt, fit a new jet. A spare gas jet is included with the