Graco GT 750, Instructions Manual

Page: 5 / 18

Installation
3A5363B 5
Installation Instructions
NOTE: The reference letters in the following instructions
refer to the Typical Installation illustration, page 4.
Grounding
Pump: use ground wire and clamp (as shown in F
IG
. 2).
Connect the other end of the ground wire to a true earth
ground.
1. Remove the ground screw (Z) and insert through
eye of the ring terminal at end of ground wire (Y).
2. Fasten the ground screw (Z) back into the pump and
tighten securely.
Air and fluid hoses: use only electrically conductive
hoses.
Air compressor: follow manufacturer’s recommenda-
tions.
Dispense valve: ground through connection to a prop-
erly grounded fluid hose and pump.
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 non-conductive 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 dispense
valve firmly to the side of a grounded metal pail, then
trigger the valve.
Mounting the Pump
• Select a convenient installation location for the
equipment to ensure easy operator access to the
pump air controls, sufficient room to change supply
containers, and a secure mounting platform.
• If you are mounting the pump directly on the supply
tank, position the pump so its intake valve is no
more than 1 in. (25 mm) from the bottom of the con-
tainer. Mount the pump to the cover or other suitable
mounting device.
• Mount the pump to suit the type of installation
planned. Very heavy lubricants may require an
inductor plate.
• Install the air line accessories as shown in the Typi-
cal Installation, page 4. Install a bleed-type master
air valve (B) within easy reach of the pump,
upstream from the air regulator. Install an air filter
(C) to remove harmful dirt and moisture from your
compressed air supply. For automatic air motor
lubrication, install an air line oiler (D) close to the
pump air inlet. Install an air regulator (E) to control
pump speed.
• Be sure the air hose is properly sized to deliver an
adequate supply of air to the motor. Refer to the
Technical Data on page 15.
• Connect a dispensing hose to the pump outlet.
Install an appropriate dispensing valve to the hose.
• Ground the pump as explained on page 5.
The equipment must be grounded to reduce the risk
of static sparking. Static sparking can cause fumes to
ignite or explode. Grounding provides an escape wire
for the electric current.
F
IG
. 2
Z
Y
Mount the pump securely so that it cannot move
around during operation. Failure to do so could
result in personal injury or equipment damage.
A bleed-type master air valve (B) is required to shut
off and relieve air pressure that may be trapped in the
air motor. Trapped air could cause the pump to cycle
unexpectedly and cause serious bodily injury, includ-
ing amputation.