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Controller Lights
Lights (LED’s) on the controller indicate when the follow-
ing inputs are made to the controller:
Red: Light comes on after pump inlet pressure of 20
psi is attained.
Green: Aerate start (engage) switch closed. If red
and yellow lights are on, green light will stay on until
either red or yellow goes off.
Yellow: Light comes on after ignition switch is in
RUN position and accumulator charge pressure
switch is closed (nitrogen pressure more than 1800
psi).
Figure 1
1
2
3
1. Red Light 2. Green Light 3. Yellow Light
Addendum
Page 8 – 12 Rev. B
Hydroject 4000