Q-Tech QP031 Owner's Manual - page 11
11
Lubricate the packings: Fill the packing nut/
wet cup with about 2-3 drops of throat seal
oil.
Prepare at least three buckets
The first bucket will hold the material to be
sprayed.
The second bucket will hold flushing fluid,
which will be either mineral spirits (for oil-
based materials), lacquer thinner (for
lacquers), water (for water based materials),
or soapy water (for converting from oil-
based or lacquer to water-based materials).
The third bucket will be the waste bucket.
Flushing
When to flush the pump
1.
When the pump is filled with storage
fluid, as when you are operating your
new airless sprayer for the first time, or
taking out of storage. Flush with mineral
spirits. (If you plan to use water-based
material see part 2 below.)
2.
When changing between oil-based
and water-based materials. First flush
with mineral spirits, followed by a soapy
water flush, followed by a clear water
flush.
3.
When changing between water-based
and oil-based materials. First flush with
clear water, then flush with mineral
spirits.
4.
When changing colors. Flush with a
compatible solvent, such as water or
mineral spirits as needed.
5.
When cleaning up. See the section on
CLEANUP
later in this manual.
6.
Storage. Leave the pump filled with
a 50/50 mixture of mineral spirits and
motor oil.
CAUTION: Never leave water in the pump for
more than about a day. Flush with mineral
spirits.
How to Flush
1.
Place the suction tube/suction hose
in a flushing bucket filled with clean
flushing fluid: either mineral spirits (for
oil-based materials), lacquer thinner
(for lacquers), water (for water-
based materials), or soapy water (for
converting from oil-based to water-
based materials).
(For hopper equipped
models: simply pour some flushing fluid
into the hopper).
2.
Separate the drain tube from the
suction tube (if they are clipped
together) and place it in an empty
waste bucket.
3.
Open the priming valve.
4.
Ensure that the unit is turned off and the
pressure control knob is at the minimum
(anticlockwise ) setting. Plug the unit in.