Graco 238377 - Page 6

7
308613
Operation
Adjustments
Before each day’s operation, lubricate with a spray of
oil inside the protection tube (13) to prevent fluid
buildup on these parts. Any buildup could damage the
valve packings (16, 17 or 18).
Set the actuating air to at least 50 psi (3.5 bar) and
start the pump. Adjust the pump speed and pressure
to obtain the desired flow rate. Always use the lowest
pump speed necessary to get the results you want.
Pressure Relief Procedure
WARNING
FLUID INJECTION HAZARD
To reduce the risk of serious bodily in-
jury, including fluid injection,splashing in
the eyes or on the skin, or injury from
moving parts, always follow this procedure when-
ever you shut off the pump, when checking or serv-
icing any part of the dispensing system, when in-
stalling, cleaning, or changing part of the valve, and
whenever you stop dispensing.
1. Shut off the power to the pump.
2. Close the bleed-type master air valve (required
with air-powered pumps).
3. Actuate the dispensing valve to relieve pressure.
4. Open the pump drain valve (required in your
system) to help relieve fluid pressure in the dis-
placement pump. Actuating the dispensing valve to
relieve pressure may not be sufficient. Have a
container ready to catch the drainage.
5. Leave the drain valve(s) open until you are ready
to dispense again.
If you suspect that the dispensing valve or hose is
completely clogged, or that pressure has not been fully
relieved after following the steps above, very slowly
loosen the hose end coupling and relieve pressure
gradually, then loosen completely. Now clear the valve
or hose.
APPLICATION DATA
APPLICATION
RECOMMENDATIONS*
TRAVEL SPEED IN MILES PER HOUR (KPH)
Based on 15 mils (.06 mm) wet paint
3
(5)
4
(6)
5
(8)
6
(10)
7
(11)
8
(12)
9
(14)
10
(16)
11
(18)
12
(19)
Paint Tip Size
For a 4 inch (101 mm) wide line 433 433 439 439 443 443 445 449 453 457
For a 6 inch (152 mm) wide line 539 539 543 549 559 561 565
For a 12 inch (304 mm) wide line 643 649
Operating Pressure psi (bar)
Paint System 1500
(102)
1500
(102)
1500
(102)
1500
(102)
1500
(102)
1500
(102)
1500
(102)
1500
(102)
1500
(102)
1500
(102)
* Coverage may vary depending on paint used.