Graco Roof Rigs 224483 Instructions-Parts List Manual page 8

General Information
NOTE: Reference numbers and letters in parentheses
in the text refer to the callouts in the figures and the
parts drawing.
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION HAZ-
ARD on page 3.
Grounding
1. Sprayer : plug the power supply cord, or extension
cord into a properly grounded outlet. Do not use an
adapter. All extension cords must have three wires
and be rated for 15 amps.
2. Fluid hoses: use only grounded hoses with a
maximum of 150 m combined hose length to
ensure grounding continuity.
3. Spray gun: obtain grounding through connection to
a properly grounded fluid hose and sprayer.
4. Object being sprayed: according to local code.
5. Fluid supply container: according to local code.
6. All solvent pails used when flushing, according to
local code. Use only metal pails, which are con-
ductive. Do not place the pail on a non-conductive
surface, such as paper or cardboard, which inter-
rupts the grounding continuity.
7. T o maintain grounding continuity when flushing or
relieving pressure , always hold a metal part of the
gun firmly to the side of a grounded metal pail,
then trigger the gun.
Setup
Pressure Relief Procedure
INJECTION HAZARD
Fluid under high pressure can be in-
jected through the skin and cause seri-
ous injury. To reduce the risk of an injury
from injection, splashing fluid, or moving parts, fol-
low the Pressure Relief Procedure whenever you:
are instructed to relieve the pressure,
stop spraying,
check or service any of the system equipment,
or install or clean the spray tips.
1. Engage the gun safety latch.
2. Turn the ON/OFF switch to OFF.
3. Unplug the power supply cord.
4. Disengage the gun safety latch. Hold a metal part
of the gun firmly to the side of a grounded metal
pail, and trigger the gun to relieve pressure.
5. Engage the gun safety latch.
6. Open the pressure drain valve, having a container
ready to catch the drainage. Leave the valve open
until you are ready to spray again.
7. Disconnect the spark plug cable.
If you suspect that the spray tip or hose is completely
clogged, or that pressure has not been fully relieved
after following the steps above , wrap a rag around the
tip guard retaining nut or hose end coupling and very
slowly loosen the part to relieve pressure gradually.
Now clear the tip or hose.
WARNING