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Safety
Introduction
Operating in Auto Mode
5
1
Product Overview
3
2
4
Installation
Operation
|
71
90
Maintenance
Troubleshooting
Auto mode synchronizes the air pressure with the
water pressure. The air pressure rises and falls
automatically as you raise and lower the water
pressure. Auto mode operates between 50 to 150
psi (3.4 to 10.3 bar).
Note: The white dots illustrate the main air pressure
route described in the instructions.
1 The compressor builds the air pressure to
match the water pressure. When the water
pressure is below 40 psi (2.8 bar), the system
operates as if it is in unload mode.
2 As the air pressure surpasses 40 psi (2.8 bar),
the minimum pressure valve opens, allowing air
to move into the manifold.
3 Inside the balance valve:
• The water side of the balance valve closes
the path for air to move to the yellow solenoid,
forcing air pressure to build.
• As the air pressure builds, it overtakes the
water pressure on the other side of the
diaphragm and allows the air to move though
the yellow solenoid to the PMC.
4 Inside the PMC:
• Air pressure builds in the PMC until it closes
the air intake, which starves the compressor
of air and causes the pressure to drop.
• As the air pressure drops, the water pressure
closes the diaphragm and stops the air from
moving through the yellow solenoid.
5 Air (pressure) in the PMC escapes though the
trim valve, opening the air inlet and allowing the
pressure to increase.
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