Installation
6
3A4586E
Installation
Grounding
Grounding is an electrical connection between a metal
vessel, pump, or motor and a true earth ground.
Motor: Electrical cords must be connected to outlets
with electrical ground.
Pump: Ensure that the ground screw provided with the
pump is connected to a true earth ground. Insert one
end of a 14 AWG minimum ground wire behind the
ground screw and tighten the screw securely. Connect
the clamp end of the grounding wire to a true earth
ground. A ground wire and clamp, Part 238909, is avail-
able from your Graco distributor.
Fluid hoses: use only electrically conductive hoses with
a maximum of 500 ft. (150 m) combined hose length to
ensure grounding continuity. Check electrical resistance
of hoses. If total resistance to ground exceeds 25 meg-
ohms, replace hose immediately.
Material supply container: follow local code.
Container(s) that receive material: follow local code.
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
1.
Remove the pump and motor from packaging.
2.
Inspect all contents for damage.
3.
Install the motor with pump lower:
a.
On pumps using the 17N668 motor, hang the
pump using the included motor hanger (302)
using adequate hardware, following local code.
Torque the motor hanger to 30-36 ft-lb (41-49
N-m).
b.
On pumps using the 17N666 or 17N667 motor,
attach motor to pump by tightening the motor
nut on the pump.
The equipment must be grounded to reduce the risk of
static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock. Ground-
ing provides an escape wire for the electric current.
To avoid injury from a falling pump, model 25C422 or
25C782, check the connections on the motor hanger
(302) before using the motor hanger to lift the pump.
NOTICE
To avoid damaging the pump, do not overtighten the
mounting hardware.
