16E / 16E-H / 16E-P Spray Gun
36
MAN 96150 EN 01
4.2.2 Lighting
There must always be wire in the nozzle when lighting the gun. If not,
the gun may flash back through the rear wire guide. The wire should
extend just past the front of the nozzle but not into the opening of the
air cap.
Read and become familiar with the lighting procedure before lighting
the spray gun. When lighting the gun, keep the gun aimed toward the
exhaust flow. When lighting the gun outside, if there is any wind, aim
the gun in the direction of the wind.
1. Turn on exhaust system.
2. Open compressed air supply valve and adjust 6A Air Control Unit
to pressure specified in spray parameters.
3. On spray gun, open gas head valve to run position and engage
safety handle. Air flows out of air cap and turbine begins spinning
up.
4. Adjust 3AF Air Flowmeter to value specified in spray parameters.
5. Release safety handle.
Gas head valve must close completely
within 1 second, with no gas leakage.
If the gas head valve does
not close within 1 second, do not use the spray gun. Service the
gas head valve. (See “Gas Head Assembly” on page 51.)
6. Open fuel gas and oxygen tank valves.
7. Adjust fuel and oxygen 3GR regulators to pressures specified in
spray parameters.
8. Open gas head valve to run position and engage safety handle.
Gases flow out of air cap and turbine begins spinning up. Purge for
at least 3 seconds.
9. Adjust 3GF Gas Flowmeter for oxygen and fuel values specified in
spray parameters.
10. Check and readjust 3AF Air Flowmeter.
11. Set gas head valve to lighting position and light gun. With the
spark lighter, create a spark near the front of the air cap.
•
Immediately
set the gas head valve to the run position when
the flame is lit.
•
If the gun does not light and you hear a “pop” inside the nozzle,
immediately release the safety handle or close the gas head
valve
. The gun has flashed back. Shut off fuel and oxygen sup-
plies and purge the gun with air before attempting to light the
gun again. See “Troubleshooting” on page 38.
DANGER
DO NOT
light the gun
without wire in the noz-
zle. This may cause a
flashback through the
rear wire guide and
cause personal injury.
DANGER
If the gas head valve
does not close within 1
second of releasing the
safety handle, do not
use the spray gun. Ser-
vice the gas head valve.