Draining Of Tar From The Vaporizer - UniCarriers 1F1 Operator's Manual

DRAINING OF TAR FROM THE VAPORIZER

!
CAUTION
• This should only be done by a trained and authorized person.
The vaporizer is an apparatus used during LPG operation to control
and reduce fuel pressure within the LPG cylinder and regulate
vaporization. The vaporization process produces tar (sticky liquid) which
accumulates in the vaporizer.
When or if tar accumulation becomes excessive, emission levels and
idling speed adjustment could be adversely affected. Tar must be
purged from the vaporizer at least once a month.
1. The tar purging procedure should be
performed when the engine is at the
operating temperature (warm).
2. Shut off (close) the LPG Cylinder (tank)
discharge valve and then idle until
engine stops.
3. Turn the ignition switch to the OFF
position and remove the key, if
equipped.
4. Get off the lift truck to open the top
panel (refer to page 83).
5. Put a cloth for collecting tar under
the bolt type outlet or the optional
vaporizer drain valve.
6. For the bolt type, slowly remove the plug.
7. Tar will drip, when it stops fix the bolt or
8. If tar adheres to the body or surrounding
9. Close the top panel (refer to page 84).
• Do not touch the vaporizer or its surrounding parts at high
NOTE:
• If you removed the battery to gain access to the drain, it is
• UCA recommends a complete tear down, inspection and resealing
2
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For the optional drain valve, open the
vaporizer drain valve lever.
close the vaporizer drain valve lever, the
procedure is complete.
areas, completely wipe it off.
!
WARNING
temperature, as it may cause burns. Whenever operating the
purge bolt (1) or drain valve lever (2), always wear protective
gloves.
necessary to do an "Idle Air Volume Relearn" (refer to VC Section in
the Chassis Service Manual).
of the vaporizer before 6,000 hours or 30 months of operation,
whichever comes first. This maintenance is necessary for all units
even if the recommended HD5 grade is being used. The conditions
in your area and the quality of the LPG may dictate a more stringent
maintenance schedule.