Installation - Graco Merkur W10CAS Assembly

Installation

Installation
General Information
Reference numbers and letters in parentheses in
the text refer to the callouts in the figures and the
parts drawing.
Always use Genuine Graco Parts and Accessories,
available from your Graco distributor. If you supply
your own accessories, be sure they are adequately
sized and pressure-rated for your system.
Prepare the Operator
All persons who operate the equipment must be trained
in the operation of all system components as well as the
proper handling of all fluids. All operators must thor-
oughly read all instruction manuals, tags, and labels
before operating the equipment.
Prepare the Site
Ensure that you have an adequate compressed air
supply.
Bring a compressed air supply line from the air com-
pressor to the pump location. Be sure all air hoses are
properly sized and pressure-rated for your system. Use
only electrically conductive hoses.
Keep the site clear of any obstacles or debris that could
interfere with the operator's movement.
Have a grounded, metal pail available for use when
flushing the system.
Grounding
The equipment must be grounded. Grounding reduces
the risk of static and electric shock by providing an
escape wire for the electrical current due to static build
up or in the event of a short circuit.
8
Pump: See F . 2. Verify that the ground screw (GS) is
IG
attached and tightened securely to the air motor. Con-
nect the other end of the ground wire (U) to a true earth
ground.
F . 2. Ground screw and wire
IG
Air and fluid hoses: Static electricity may build up
when fluids flow through pumps, hoses, and sprayers. At
least one hose must be electrically conductive, with a
maximum of 500 ft. (150 m) combined hose length to
ensure grounding continuity. Check electrical resistance
of hose. If total resistance to ground exceeds 25 meg-
ohms, replace hose immediately.
Air compressor: follow manufacturer's recommenda-
tions.
Spray gun / Dispense valve: Ground the spray gun
through connection to a Graco-approved grounded fluid
hose.
Fluid supply container: follow local code.
Object being sprayed: follow local code.
Solvent pails used when flushing: follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive sur-
face, such as paper or cardboard, which interrupts
grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the spray
gun/dispense valve firmly to the side of a grounded
metal pail, then trigger the gun/valve.
GS ti12914a
312794F
U