Flushing Guidelines - Graco C Series Instructions-Parts List Manual

Roofing Applications*
Roof Coating
Primers
Acrylics
Hypolans
Urethanes
Bonding Adhesive
Architectural Coatings
(enamel, latex, acrylic)
1
Check coating manufacturer's recommendations for
back rolling. Use a Graco Roof Rigst Spray Roller,
224470
When To Flush
CAUTION
NEVER leave water in the sprayer if there is the
slightest change it could freeze. Pump the water out
with mineral spirits. Water frozen in the pressure
control tube prevents the sprayer from being started,
and causes serious damage to the pressure control.
1. New Sprayer. This pump was factory tested in
lightweight oil,which was left in to protect the pump
parts.
Before using water–base paint, flush with mineral
spirits, followed by a soapy water flush, and then a
clean water flush.
Before using oil–base paint, flush with mineral spir-
its, only.
2. Changing Colors. Flush with a compatible sol-
vent such as mineral spirits or water.
3. Changing from water–base to oil–base paint.
Flush with warm, soapy water, then mineral
spirits.
Tip Selection Chart
Recommended Tip
Size
0.031 – 0.035
0.031 – 0.035
0.031 – 0.035
0.031 – 0.035
1
0.031
0.019 – 0.035

Flushing Guidelines

*The 60 mesh fluid filter screen is standard. Use the
optional 30 mesh screen (supplied) with tips larger
than 0.031.
General Painting Applications*
Coating
Smoothy (non-aggregate)
Architectural Coatings
(enamel, latex, acrylic)
Primers
Smooth (non-aggregate)
Elastomerics/Acrylics
4. Changing from oil–base to water–base paint.
Flush with mineral spirits, followed by warm, soapy
water, and then a clean water flush.
5. Storage.
Water base paint: flush with water, then mineral
spirits and leave the pump, hose and gun filled
with mineral spirits. Shut off the sprayer, remove
the spark plug cable, and open the pressure drain
valve to relieve pressure. Leave the drain valve
open.
Oil base paint: flush with mineral spirits and leave
the pump, hose and gun filled with mineral spirits.
Shut off the sprayer, remove the spark plug cable,
and open the pressure drain valve to relieve pres-
sure. Leave the drain valve open.
6. Startup after storage.
Before using water–base paint, flush out the min-
eral spirits with soapy water, and then with clean
water.
When using oil–based paint, flush out the mineral
spirits with the paint to be sprayed.
Recommended Tip
Size
0.019 – 0.035
0.017 – 0.035
0.025 – 0.035
5
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