Graco 226-991, Instructions-Parts List Manual

Page: 10 / 24

13. Connect the feed hose to the
pumps. Slide an identification band or
over the end of each feed hose Connect a feed
between the feed pump fluid outlet and
the fluid intake valve of each
displacement pump (48). Refer to the Typical In-
stallation on page 4.
14. Remove the ATC Sensor (49) from the clamp
and locate it
outside
in air that is typical of the sur-
face to be sprayed. The sensor has a 15 (4.6
cable. See Fig 5, page 7.
WARNING
The electrical wiring should be done only by train-
ed and qualified personnel to reduce the risk of
r
serious bodily injury and electric shock.
Observe all local codes and regulations regarding
electrical wiring.
15. Wire the electrical service to the heater junc-
tion box. The electrical requirements for the heater
are shown on the inside cover to the heater junction
box.
The heater is grounded through the electrical wiring
to a grounding screw on the inside bottom of the
junction box. The proportioning pump must also be
grounded to provide adequate system electrical
grounding. Refer to Step 16.
16. Ground the spray system.
WARNING
To reduce the risk of static sparking, which can
cause a fire or explosion and result in serious bodi-
ly injury, including electric shock, and property
damage, be sure your entire spray system is pro-
perly grounded. Read and follow the warnings in
FIRE OR EXPLOSION HAZARD, page 2, and
steps below.
To ground the pumps and sprayer:
a. Loosen the grounding lug locknut and
washer located on the proportioning pump
motor Insert one end of a 12 ga
(1.5 minimum ground wire into the
slot in the lug and tighten the locknut
securely. See Fig 13.
b .
Connect the other end of the wire to a good
ground such as a steel building column (check
your local code).
To ground the heater and heated hoses:
c . Wire the heater to a positively grounded power
supply In a mobile installation, be sure the truck
or trailer is connected to a true earthen ground.
d .
Connect the heated hose to a properly ground-
ed heater. The Ground Fault Interruptor on the
hose control panel of the Foam-Cat Heater
senses electrical continuity in the heated hoses;
it cannot function unless the heater is positively
grounded. In Europe, hose continuity must
comply with VDE 0100.
17. Install the Air Dryer drum fittings in the
in. vent port of the corresponding drum of fluid.
Close the shutoff valve
and connect the cor-
responding dry air hoses Use only the special
pin fitting and coupler to connect the dry
air hoses to the drum fittings. Do not use additional
lengths of dry air hose. See Fig 14.
WARNING
The special air line pin fitting and coupler
are designed to prevent accidentally coupling an
unregulated air supply hose to the drum.
Unregulated air can overpressurite the drum and
cause it to rupture and cause serious bodily injury.
Never substitute a different type of coupler and
fitting! Use original parts.
I
open position
F i g 1 4
307-542