Graco ProMix PD2K Installation Manual page 30

Air Supply
Air Connections
1. Tighten all system air and fluid line connections
as they may have loosened during shipment.
2. Connect the main air supply line to the main air
inlet (136). This air line supplies the solenoids,
valves, and pumps. Do not use this line to supply
the gun's atomizing air.
3. Connect a separate, dedicated, clean air supply
line to the air inlet (159a) of the air flow switch.
This air supplies gun atomizing air. The air flow
switch detects air flow to the gun and signals the
controller when the gun is being triggered.
NOTE: For Dual Panel systems, the guns'
atomizing air is connected at the Air Control
Module (see manual 3A4497).
NOTE: If you are using a Graco hose bundle,
connect the 4 ft (1.2 m) end of the air hose to the
atomizing air outlet (159c) and the 7 ft (2.1m) end
of the air hose to the gun. If there is more than
one gun (for example, a separate gun for each
color), the atomizing air outlet (159c) must be
branched to each gun. For ease of maintenance,
install a ball valve at all air line tees.
Figure 16 Connect Atomizing Air
30
Figure 17 Air Manifold Connections
Key
Description
Connection
A Air inlet
C GFB/Air cutoff output (plugged)
M Exhaust muffler
S Solvent cutoff output
332457H