How To Flush The Gun - Graco B Series Instructions-Parts List Manual

If using the accessory RAC IV tip guard
1. Engage the trigger safety latch. Rotate the RAC IV
_
tip handle 180 . See Fig.4.
2. Disengage the safety latch. Trigger the gun into a
pail or onto the ground to remove the clog.
3. Engage the safety latch. Rotate the tip handle to
the spraying position.
4. If the tip is still clogged, engage the safety latch, shut
off the sprayer and disconnect the power source,
and open the pressure drain valve to relieve pres-
sure. Clean the spray tip as shown in manual
307–848, supplied with the RAC IV.
KEY
A Handle shown in spraying
position. Turn handle
180
trigger gun to clear clog.
A
Fig. 4

How to Flush the Gun.

WARNING
This gun uses a pre–orifice in the seat to develop
the type of spray pattern required in most circu-
lating systems. The pre-orifice does not diffuse
the spray from the nozzle into an irregular
pattern, as with the other airless spray guns you
may have used. Therefore, to reduce the risk of
an injection injury when the tip guard is not
installed, such as during cleaning, take extra
precautions to keep your hands and body away
from the nozzle of the gun.
Always flush the pump and the gun before the fluid
being sprayed can dry in it.
6 308237
Installation/Operation
NOTE: If it is available, the flushing procedure
provided in your pump or sprayer manual should be
used instead of this procedure.
1. Follow the Pressure Relief Procedure, page 2.
2. Remove the tip guard and spray tip. Soak and
clean the parts.
3. Put the pump intake in a grounded pail of water or
solvent.
4. Start the pump at its lowest pressure.
5. Trigger the gun into the original pail. When solvent
appears, release the trigger.
6. With the gun trigger released, circulate the fluid
until the system is thoroughly flushed.
7. Follow the Pressure Relief Procedure, page 2.
WARNING
To reduce the risk of serious bodily injury, including
splashing fluid in the eyes or on the skin, or static
electric discharge when flushing:
D Be sure the entire system, including flushing
pails, are properly grounded.
D Remove the tip guard and spray tip.
D Maintain metal to metal contact between the
gun and the flushing pail.
D Use the lowest possible pressure.
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