Installing The Unidrum; Grounding The System; Checking The Resistance Between The Pumps And The True Earth Ground - Graco UniDrum C59784 Instructions And Parts List

Installation

Installing the UniDrum

To install the UniDrum, follow the procedure below.
Refer to Technical Specifications on page 77 for ram
mounting and clearance dimensions.
1. Using equipment such as a forklift or handtruck,
move the UniDrum into place on the floor. Remove
the shipping pallet.
2. Level the UniDrum, using metal shims.
3. Using the holes in the base as a guide, drill holes
for 13 mm (1/2 in.) anchors.
4. Bolt the UniDrum to the floor using anchors that are
long enough to prevent the unit from tipping.

Grounding the System

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.
Grounding provides an escape wire for the electric
current.
Pump: use a ground wire and clamp. Verify that the
ground screw (GS) is attached and tightened securely
to the air motor. Connect the clamp (U) of the static
ground cable assembly to a true earth ground. For a
ground wire and clamp, order Part No. 244524.
F . 4
IG
16
Air and fluid hoses: use only electrically conductive
hoses.
Air compressor: follow manufacturer's
recommendations.
Spray gun / Dispense valve: ground through
connection to a properly grounded fluid hose and
pump.
Fluid supply container: follow local codes and
regulations.
Object being sprayed: follow local codes and
regulations.
Solvent pails used when flushing: follow local codes
and regulations. Use only conductive metal pails,
placed on a grounded surface. Do not place the pail on
a nonconductive surface, 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
firmly to the side of a grounded metal pail, then trigger
the gun.
Checking the Resistance
Between the Pumps and the
True Earth Ground
To reduce the risk of fire, explosion, or electric shock,
the resistance between the Supply Unit components
and true earth ground must be less than 1.0 ohms.
Check the resistance between each Pump and the true
earth ground. If the resistance is greater than 1.0 ohms,
a different ground site may be required. Do not operate
the system until the problem is corrected.
NOTE: Use a meter that is capable of measuring
resistance at this level.
309169ZAF