Graco Hydra-Clean 206–515 Instructions-Parts List Manual page 5

Grounding
WARNING
FIRE AND EXPLOSION HAZARD
Before operating the pump, ground the
system as explained below. Also read
the section FIRE OR EXPLOSION
HAZARD on page 4.
Although water generally provides a natural electrical
ground, the following equipment must be grounded if
the cleaning chemical are volatile.
1. When cleaning in enclosed areas, such as storage
tanks, locate the pump and air compressor outside
the area and well away from it. Provide adequate
ventilation. If the area you are cleaning has stored
flammable materials. take appropriate precautions
to avoid static sparking. Consul your local codes.
2. Pump: use a ground wire and clamp. See Fig. 1.
Loosen the grounding lug locknut (W) and washer
(X). Insert one end of a 1.5 mm (12 ga) minimum
ground wire (Y) into the slot in lug (Z) and tighten
the locknut securely. Connect the other end of the
wire to a true earth ground. Order Part No.
237–569 Ground Wire and Clamp.
W
Y
Fig. 1
3. Air and fluid hoses: use only electrically conductive
hoses.
4. Air compressor: follow manufacturer's recommen-
dations.
5. Spray gun: ground through connection to a prop-
erly grounded fluid hose and pump.
6. Fluid supply container: follow your local code.
Setup
7. Object being sprayed: follow your local code.
8. Solvent pails used when flushing: follow your local
code. Use only metal pails, which are conductive,
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper or
cardboard, which interrupts the grounding continu-
ity.
9. T o maintain grounding continuity when flushing or
relieving pressure , hold a metal part of the spray
gun firmly to the side of a grounded metal pail,
then trigger the gun.
General Information
The typical setup shown in Figure 2 is only a guide to
selecting and installing required and optional compo-
nents. For assistance in designing a system to suit
your needs, contact your Graco distributor. Refer to
Figure 2 for callouts in parentheses.
Connect Hoses and Mount Pump
1. Using Loctite Pipe Sealant, screw the hose
stud (10) of the suction hose into the pump's
intake housing. See Fig. 2. Remove one of the
screws from the pump base opposite the outlet,
and assemble the hanging bracket (19) to the
pump with the provided screw (9) – use the lock-
washer that was on the replaced screw.
2. Using Loctite
tor (7) inlet adapter into the pump outlet. Connect
the fluid hose to the accumulator, the nozzle to the
spray valve, and the air line lubricator (3) to the
pump air inlet. Hang the pump on your cleaning
solution drum.
X
NOTE: The filter on the suction hose should be about
Z
1/2 in. (12.7 mm) off the bottom of the drum. If the
hose is too long, cut it off as necessary.
3. Close the air ball valve (24), then connect your 1/2
ID (min) air supply hose to the 1/2 nptm(f) inlet
union (15) – do not use thread sealer. Install an
accessory air filter and water separator to remove
excessive moisture that could cause air motor
icing. Pour high quality SAE 10 into the lubricator
until oil reaches the level mark on the sight glass.
Oils containing phosphate ester or chlorinated hydro-
carbons are not compatible with the plastic bowl of
the lubricator – be sure that oil used to lubricate the
compressor is free of these additives.
Pipe Sealant, screw the accumula-
CAUTION