Sherwin-Williams ULTIMATE 824-032 - Manual (Page 10)

10 824-033
Flushing
When to Flush
1. New Sprayer. The sprayer is factory tested with
lightweight oil which is left to protect pump parts.
Before using water–base paint, flush with mineral
spirits, then warm, soapy water, and then clean
water.
Before using oil–base paint, flush with mineral spir-
its.
2. Changing Colors. Flush with compatible solvent.
3. Changing from water–base to oil–base paint. Flush
with warm, soapy water, then mineral spirits.
4. Changing from oil–base to water–base paint. Flush
with mineral spirits, then warm, soapy water, and
then clean water.
5. Storage. Flush as indicated below, shut off spray-
er, open pressure drain valve to relieve pressure
and leave open.
Water–base paint: flush with water, then mineral
spirits. Leave system filled with mineral spirits.
Oil–base paint: flush with mineral spirits.
CAUTION
Never allow water to freeze in the pressure control.
Doing so prevents the sprayer from being started
and causes serious damage to the pressure control.
Push the water out with mineral spirits.
6. Startup after storage. Before using water–base
paint, flush out mineral spirits with soapy water and
then clean water. When using oil–base paint, flush
out mineral spirits with the paint to be sprayed.
How to Flush
1. Relieve pressure.
2. Remove filter bowl (C) and screen (D). Install
bowl (C) and filter support (E) without screen (D)
to flush. See Fig. 7.
3. Close pressure drain valve (F).
4. Pour 1/2 gallon of compatible solvent into grounded
metal pail. Put suction tube in pail.
5. Remove spray tip from gun.
7390A
7148A
Fig. 7
C
E
F
A
B
D
6. Turn pressure adjusting knob (A) completely
counterclockwise to lowest pressure setting.
WARNING
FIRE AND EXPLOSION HAZARD
To reduce static sparking and splash-
ing, always remove the spray tip from
the gun, and hold a metal part of the
gun firmly to the side of a grounded metal pail
when flushing.
7. Hold metal part of gun firmly against metal waste
container.
See Fig. 4. Trigger gun, turn sprayer
switch (B) on, and slowly increase pressure until
sprayer just starts. Keep gun triggered until all air
is forced out of system and solvent flows freely
from gun. Release trigger and engage gun safety
latch.
NOTE: If the pump is hard to prime, open the drain
valve. When fluid comes from the valve, close it.
Proceed as in Step 7.
8. Remove suction tube from pail. Disengage gun
safety latch and trigger gun to force solvent from
hose. Do not run pump dry for more than 30
seconds to avoid damaging pump packings!
Relieve pressure.
9. Leave pressure drain valve (F) open until sprayer
is used again.
10. Clean filter screen (D) and reinstall. Reinstall
bowl (C), hand tight only.
11. If pump is flushed with mineral spirits and is to be
used with water–base paint, flush with soapy water
and then clean water. Relieve pressure.