Pressure Relief Procedure; With Color Change - Graco ProMix PD2K Operation

Pressure Relief Relief Procedure
Pressure Pressure Relief
Follow the Pressure
whenever you see this symbol.
This equipment stays pressurized until pressure
is manually relieved. To help prevent serious
injury from pressurized fluid, such as skin injection,
splashing fluid and moving parts, follow the
Pressure Pressure Relief Pressure Relief Procedure Relief Procedure when you stop spraying Procedure
and before cleaning, checking, or servicing the
equipment.
Without Color Color Change Change
Without Without Color Change
NOTE: NOTE: NOTE: The following procedure relieves all fluid and
air pressure in the system. Use your control interface
to issue the necessary commands to your system.
1. Turn off the supply pumps. Open the drain valve
on the supply line fluid filter to relieve pressure
in the supply line.
2. Command Mix Unit #1 to Standby. From
Maintenance Screen 4 on the ADM, check the
box in the field labeled Gun for the color or
catalyst in the pump. Trigger the spray device to
relieve pressure. Repeat for each pump.
3. Flush the remote mix manifold and spray device.
See Flush Mixed Material, page
4. Shut off the solvent supply pump. To relieve
pressure, command Mix Unit #1 to Purge and
trigger the spray device. When the pressure is
relieved, command Mix Unit #1 to Standby to
avoid getting a Purge Incomplete alarm.
5. If pressure remains in the solvent line between
the solvent supply pump and the solvent valve:
• VERY SLOWLY loosen a fitting to relieve
pressure gradually.
• Loosen the fitting completely.
6. Repeat for Mix Unit #2
3A4486D
Procedure
Procedure
Pressure Relief Pressure Relief Procedure Relief Procedure Procedure
21.

Pressure Relief Procedure

With Color Color Change Change
With With Color Change
NOTE: The following procedure relieves all fluid and
NOTE: NOTE:
air pressure in the system.
1. Turn off the supply pumps. Open the drain valve
on the supply line fluid filter to relieve pressure in
the supply lines. Do this for each color.
2.
To help prevent fire and explosion, shut off
electrostatics before flushing.
If using an electrostatic gun, shut off the
electrostatics before flushing the gun.
3. Trigger the gun to relieve pressure. From
Maintenance Screen 5on the ADM, check the box
in the field labeled Gun for each color used with
Mix Unit #1, to manually open each color valve.
4. Set the system to Recipe 0 to flush the pumps
and to purge to the spray device. Hold the gun
trigger open after the solvent valve shuts off to
relieve all pressure. When flushing is complete
Mix Unit #1 will go to Standby.
5. Shut off the solvent supply pump. Set Mix Unit
#1 to Recipe 0 to flush solvent from the pumps
and to purge to the spray device. Command Mix
Unit #1 to Standby after just a couple of seconds,
to avoid getting a Purge Incomplete alarm.
6. If pressure remains in the solvent line between
the solvent supply pump and the solvent valve:
• VERY SLOWLY loosen a fitting to relieve
pressure gradually.
• Loosen the fitting completely.
7. Verify on the ADM Home Screen that neither
pump 1 nor 2 is showing any pressure.
8. Repeat for Mix Unit #2 and pumps 3 and 4.
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