Q-Tech Q-P019 User Manual - Clogged Flat Tip
User Manual Q-Tech Q-P019 -
Electric Airless Spray Pump
12
CLOGGED FLAT TIP
If you are using a flat tip and the spray tip
becomes clogged, relieve pressure from
hose by following the "PRESSURE
RELIEF PROCEDURE." Secure gun with
the safety latch, take off guard, take out
the tip, soak in appropriate solvent & clean
with a soft brush. (Do not use a needle or
sharp pointed instrument to clean the
tip. The tungsten carbide is brittle and
can chip.)
SPRAY TIP
SELECTION
Spray tip selection is based on paint
viscosity, paint type, and job needs. There
are two variables to identify the tip: orifice
size and fan pattern width. The main
variable is tip orifice size. Generally, use a
smaller orifice tip for light viscosities (thin
materials, like varnish), and use a larger
orifice tip for heavier viscosities (thicker
materials, like latex paints). Spray tip
orifice size is based on how many gallons
of paint per minute can be sprayed
through the tip. Do not use a tip larger
than the maximum pump flow rate or
capacity the sprayer can accommodate.
Pump flow rate is measured in gallons
per minute (GPM) and liters per minute
(LPM).
The other variable is the fan pattern width.
Two tips having the same orifice tip
size, but different fan widths will deliver
the same amount of paint over a different
area (wider or narrower strip). A spray tip
with a narrow fan width makes it easy to
spray in tight places. (Thickness of the
material coat per stroke is determined by
spray tip fan width, rate of the spray gun
movement, and distance to surface.)
The numbers on the tip identify its orifice
size and fan width. The first number on the
tip identifies the fan width radius in inches.
The last two numbers identify the orifice
size in thousandths of an inch. So, for
example, a 517 tip would have a 10 inch
fan width (5 inch radius) and a 0.017 inch
orifice size.
SPRAY TIP
REPLACEMENT
During use, especially with latex paint, grit
and impurities in the paint under high
pressure will cause the orifice to grow
larger from wear and for the fan pattern
width to degrade.
It is easy to determine the state of wear of
the tip by observing the fan pattern. As the
tip wears, the fan width will become
narrower. A new tip will have a pattern
shaped like a narrow long rounded-corner
rectangle. As it wears it will turn into an
oval shape. When it is completely worn
out it sprays a circle. When the fan width
decreases to about 2/3 of its original size,
it is considered worn out.
Note: To minimize tip wear, it is best to
always strain paint before use with a
paint strainer bag and regularly clean all
filters and strainers.
Replace tips before they become
excessively worn. Worn tips waste
NEW
WORN