Graco XP50s-hf, Операция, ремонт и запасные части.

Страница: 44 / 86

Operation
44 3A6283F
Flushing
Guidelines
Flushing will help prevent materials from setting or
gelling in the pumps, lines, and valves. Flush the system
when any of the following situations occur:
• Any time the system will not be used for more than
one week (depending on materials used)
• If the materials used have fillers that will settle
• If using materials that are moisture sensitive
• Before servicing
• If the machine is going into storage, replace the
solvent with light oil. Never leave the equipment
empty of any fluid.
Flush the mix manifold when any of the following
situations occur:
• Breaks in spraying
• Overnight shutdown
Mixed material in system approaching end of pot life
Flush Mixed Material
1. Follow the Pressure Relief Procedure on page 43.
2. Ensure the solvent pump regulator (DB) is fully
closed and open the solvent air valve (DA).
3. Open the solvent flush valve (AD).
4. Disengage the trigger lock (TL), hold the gun
against a grounded metal pail, and trigger the gun
into the pail. Use a pail lid with a hole to dispense
through. Seal around the hole and gun with a rag to
prevent splash back. Be careful to keep fingers
away from the front of the gun. Continue flushing
until clean solvent dispenses.
5. Close the solvent pump air valve (DA).
6. Hold a metal part of the gun against a grounded
metal pail and trigger the gun to relieve pressure.
Close the solvent flush valve (AD) after relieving the
pressure.
7. Engage the trigger lock (TL). Disassemble and
clean the spray tip with solvent by hand. Reinstall
spray tip on the gun.
To avoid fire and explosion, always ground equipment
and waste container. To avoid static sparking and
injury from splashing, always flush at the lowest
possible pressure. Hot solvent may ignite. To avoid fire
and explosion:
•
Flush equipment only in a well-ventilated area
• Ensure main power is off and heater is cool before
flushing
• Do not turn on heater until fluid lines are clear of
solvent
DB
DA
AD
WLD
TL